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Monday, Aug 10, 2026 02:14:19

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Heat Advisory 0003
Issued by the Eureka Forecast Office

Action Issued Starts Expiration
New 2026-08-02 00:38:10 2026-08-03 13:00:00 2026-08-05 01:00:00
Continued 2026-08-02 09:11:43 2026-08-03 13:00:00 2026-08-05 01:00:00
Time and Area Extended 2026-08-02 23:22:36 2026-08-04 13:00:00 2026-08-07 01:00:00
Time and Area Extended 2026-08-02 23:22:36 2026-08-04 13:00:00 2026-08-05 23:00:00
Time and Area Extended 2026-08-02 23:22:36 2026-08-04 13:00:00 2026-08-05 01:00:00
Continued 2026-08-02 23:22:36 2026-08-03 13:00:00 2026-08-05 01:00:00
Continued 2026-08-03 07:02:39 2026-08-04 13:00:00 2026-08-05 01:00:00
Continued 2026-08-03 07:02:39 2026-08-04 13:00:00 2026-08-07 01:00:00
Continued 2026-08-03 07:02:39 2026-08-03 13:00:00 2026-08-05 01:00:00
Continued 2026-08-03 07:02:39 2026-08-04 13:00:00 2026-08-05 23:00:00
Continued 2026-08-03 22:55:36 2026-08-04 13:00:00 2026-08-05 23:00:00
Continued 2026-08-03 22:55:36 2026-08-04 13:00:00 2026-08-07 01:00:00
Continued 2026-08-03 22:55:36 2026-08-04 13:00:00 2026-08-05 01:00:00
Continued 2026-08-03 22:55:36 2026-08-05 01:00:00
Continued 2026-08-04 04:58:07 2026-08-04 13:00:00 2026-08-07 01:00:00
Continued 2026-08-04 04:58:07 2026-08-04 13:00:00 2026-08-05 01:00:00
Time Extended 2026-08-04 04:58:07 2026-08-04 13:00:00 2026-08-07 01:00:00
Continued 2026-08-04 04:58:07 2026-08-05 01:00:00
Continued 2026-08-04 23:26:05 2026-08-07 01:00:00
Continued 2026-08-04 23:26:05 2026-08-07 01:00:00
Continued 2026-08-04 23:26:05 2026-08-05 01:00:00
Continued 2026-08-04 23:26:05 2026-08-05 01:00:00
Continued 2026-08-05 00:47:07 2026-08-07 01:00:00
Expired 2026-08-05 00:47:07 2026-08-05 01:00:00
Continued 2026-08-05 00:47:07 2026-08-07 01:00:00
Continued 2026-08-05 08:12:43 2026-08-07 01:00:00
Continued 2026-08-05 08:12:43 2026-08-07 01:00:00
Continued 2026-08-06 00:13:45 2026-08-07 01:00:00
Continued 2026-08-06 00:13:45 2026-08-07 01:00:00
Time Extended 2026-08-06 02:52:49 2026-08-08 01:00:00
Continued 2026-08-06 02:52:49 2026-08-07 01:00:00
Time Extended 2026-08-06 14:36:59 2026-08-10 00:00:00
Continued 2026-08-06 14:36:59 2026-08-07 01:00:00
Continued 2026-08-06 22:20:46 2026-08-07 01:00:00
Continued 2026-08-06 22:20:46 2026-08-10 00:00:00
Continued 2026-08-07 00:51:20 2026-08-10 00:00:00
Expired 2026-08-07 00:51:20 2026-08-07 01:00:00
Continued 2026-08-07 08:32:12 2026-08-10 00:00:00
Continued 2026-08-07 19:01:03 2026-08-10 00:00:00
Time and Area Extended 2026-08-08 02:23:58 2026-08-08 13:00:00 2026-08-09 01:00:00
Continued 2026-08-08 02:23:58 2026-08-10 00:00:00
Cancelled 2026-08-08 23:33:39 2026-08-09 01:00:00
Continued 2026-08-08 23:33:39 2026-08-10 00:00:00
Continued 2026-08-09 07:18:10 2026-08-10 00:00:00
Continued 2026-08-09 16:52:56 2026-08-10 00:00:00
Expired 2026-08-09 23:31:09 2026-08-10 00:00:00


Action: New
Issued At: 2026-08-02 00:38:10

750 
WWUS76 KEKA 020537
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
1037 PM PDT Sat Aug 1 2026

CAZ110-111-113-114-118>120-021345-
/O.NEW.KEKA.HT.Y.0003.260803T1800Z-260805T0600Z/
Northwestern Interior Mendocino-Northeastern Interior Mendocino-
Southeastern Interior Mendocino-Northern Lake-Western Lake-
Southwestern Lake-Eastern Lake-
Including Middletown, Potter Valley, Legget, Upper Lake, Ukiah,
Calpella, Clearlake, Gravelly Valley Airport, Laytonville, Clearlake
Park, Hidden Valley Lake, Willits, Hopland, Knobcone Camp, Covelo,
Talmage, Redwood Valley, Finley, Cobb, and Lakeport
1037 PM PDT Sat Aug 1 2026

...HEAT ADVISORY IN EFFECT FROM 11 AM MONDAY TO 11 PM PDT TUESDAY...

* WHAT...Temperatures to 105 will produce moderate to major heat
  risk.

* WHERE...Northern Mendocino Interior, Lake County, and Southeastern
  Interior Mendocino.

* WHEN...From 11 AM Monday to 11 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

MKK


Action: Continued
Issued At: 2026-08-02 09:11:43

552 
WWUS76 KEKA 021411
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
711 AM PDT Sun Aug 2 2026

CAZ110-111-113-114-118>120-030600-
/O.CON.KEKA.HT.Y.0003.260803T1800Z-260805T0600Z/
Northwestern Interior Mendocino-Northeastern Interior Mendocino-
Southeastern Interior Mendocino-Northern Lake-Western Lake-
Southwestern Lake-Eastern Lake-
Including Potter Valley, Hidden Valley Lake, Gravelly Valley Airport,
Finley, Clearlake Park, Ukiah, Redwood Valley, Laytonville, Knobcone
Camp, Willits, Covelo, Middletown, Clearlake, Hopland, Talmage,
Legget, Calpella, Upper Lake, Lakeport, and Cobb
711 AM PDT Sun Aug 2 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM MONDAY TO 11 PM PDT
TUESDAY...

* WHAT...Temperatures to 105 will produce moderate to major heat
  risk.

* WHERE...Northern Mendocino Interior, Lake County, and Southeastern
  Interior Mendocino.

* WHEN...From 11 AM Monday to 11 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

JB


Action: Time and Area Extended
Issued At: 2026-08-02 23:22:36

402 
WWUS76 KEKA 030422
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
922 PM PDT Sun Aug 2 2026

CAZ102-031230-
/O.EXB.KEKA.HT.Y.0003.260804T1800Z-260805T0600Z/
Interior Del Norte-
Including Gasquet
922 PM PDT Sun Aug 2 2026

...HEAT ADVISORY IN EFFECT FROM 11 AM TO 11 PM PDT TUESDAY...

* WHAT...Temperatures to 105 will produce moderate to major heat
  risk.

* WHERE...Interior Del Norte.

* WHEN...From 11 AM to 11 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ105-106-031230-
/O.EXB.KEKA.HT.Y.0003.260804T1800Z-260806T0400Z/
Northeastern Interior Humboldt-Southeastern Interior Humboldt-
Including Alderpoint, Dinsmore, Orleans, Pepperwood, Garberville,
Shively, Bridgeville, Willow Creek, Weitchpec, Benbow, Bull Creek,
Hoopa, and Kneeland
922 PM PDT Sun Aug 2 2026

...HEAT ADVISORY IN EFFECT FROM 11 AM TUESDAY TO 9 PM PDT
WEDNESDAY...

* WHAT...Temperatures to 105 to 110 will produce moderate to major
  heat risk.

* WHERE...Humboldt Interior.

* WHEN...From 11 AM Tuesday to 9 PM PDT Wednesday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ108-116-117-031230-
/O.EXB.KEKA.HT.Y.0003.260804T1800Z-260807T0600Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Forest Glen, Weaverville, Del Loma, Douglas City, Helena,
Carrville, Hayfork, Trinity Center, Junction City, Big Bar, Zenia,
Hyampom, Peanut, and Ruth
922 PM PDT Sun Aug 2 2026

...HEAT ADVISORY IN EFFECT FROM 11 AM TUESDAY TO 11 PM PDT
THURSDAY...

* WHAT...Temperatures of 105 to 110 will produce moderate to major
  heat risk.

* WHERE...Trinity County.

* WHEN...From 11 AM Tuesday to 11 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ110-111-113-114-118>120-031230-
/O.CON.KEKA.HT.Y.0003.260803T1800Z-260805T0600Z/
Northwestern Interior Mendocino-Northeastern Interior Mendocino-
Southeastern Interior Mendocino-Northern Lake-Western Lake-
Southwestern Lake-Eastern Lake-
Including Upper Lake, Talmage, Redwood Valley, Hopland, Potter
Valley, Gravelly Valley Airport, Middletown, Knobcone Camp, Legget,
Clearlake, Cobb, Finley, Clearlake Park, Lakeport, Hidden Valley
Lake, Calpella, Covelo, Willits, Ukiah, and Laytonville
922 PM PDT Sun Aug 2 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM MONDAY TO 11 PM PDT
TUESDAY...

* WHAT...Temperatures to 105 will produce moderate to major heat
  risk.

* WHERE...Northern Mendocino Interior, Lake County, and Southeastern
  Interior Mendocino.

* WHEN...From 11 AM Monday to 11 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

MKK


Action: Time and Area Extended
Issued At: 2026-08-02 23:22:36

402 
WWUS76 KEKA 030422
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
922 PM PDT Sun Aug 2 2026

CAZ102-031230-
/O.EXB.KEKA.HT.Y.0003.260804T1800Z-260805T0600Z/
Interior Del Norte-
Including Gasquet
922 PM PDT Sun Aug 2 2026

...HEAT ADVISORY IN EFFECT FROM 11 AM TO 11 PM PDT TUESDAY...

* WHAT...Temperatures to 105 will produce moderate to major heat
  risk.

* WHERE...Interior Del Norte.

* WHEN...From 11 AM to 11 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ105-106-031230-
/O.EXB.KEKA.HT.Y.0003.260804T1800Z-260806T0400Z/
Northeastern Interior Humboldt-Southeastern Interior Humboldt-
Including Alderpoint, Dinsmore, Orleans, Pepperwood, Garberville,
Shively, Bridgeville, Willow Creek, Weitchpec, Benbow, Bull Creek,
Hoopa, and Kneeland
922 PM PDT Sun Aug 2 2026

...HEAT ADVISORY IN EFFECT FROM 11 AM TUESDAY TO 9 PM PDT
WEDNESDAY...

* WHAT...Temperatures to 105 to 110 will produce moderate to major
  heat risk.

* WHERE...Humboldt Interior.

* WHEN...From 11 AM Tuesday to 9 PM PDT Wednesday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ108-116-117-031230-
/O.EXB.KEKA.HT.Y.0003.260804T1800Z-260807T0600Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Forest Glen, Weaverville, Del Loma, Douglas City, Helena,
Carrville, Hayfork, Trinity Center, Junction City, Big Bar, Zenia,
Hyampom, Peanut, and Ruth
922 PM PDT Sun Aug 2 2026

...HEAT ADVISORY IN EFFECT FROM 11 AM TUESDAY TO 11 PM PDT
THURSDAY...

* WHAT...Temperatures of 105 to 110 will produce moderate to major
  heat risk.

* WHERE...Trinity County.

* WHEN...From 11 AM Tuesday to 11 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ110-111-113-114-118>120-031230-
/O.CON.KEKA.HT.Y.0003.260803T1800Z-260805T0600Z/
Northwestern Interior Mendocino-Northeastern Interior Mendocino-
Southeastern Interior Mendocino-Northern Lake-Western Lake-
Southwestern Lake-Eastern Lake-
Including Upper Lake, Talmage, Redwood Valley, Hopland, Potter
Valley, Gravelly Valley Airport, Middletown, Knobcone Camp, Legget,
Clearlake, Cobb, Finley, Clearlake Park, Lakeport, Hidden Valley
Lake, Calpella, Covelo, Willits, Ukiah, and Laytonville
922 PM PDT Sun Aug 2 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM MONDAY TO 11 PM PDT
TUESDAY...

* WHAT...Temperatures to 105 will produce moderate to major heat
  risk.

* WHERE...Northern Mendocino Interior, Lake County, and Southeastern
  Interior Mendocino.

* WHEN...From 11 AM Monday to 11 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

MKK


Action: Time and Area Extended
Issued At: 2026-08-02 23:22:36

402 
WWUS76 KEKA 030422
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
922 PM PDT Sun Aug 2 2026

CAZ102-031230-
/O.EXB.KEKA.HT.Y.0003.260804T1800Z-260805T0600Z/
Interior Del Norte-
Including Gasquet
922 PM PDT Sun Aug 2 2026

...HEAT ADVISORY IN EFFECT FROM 11 AM TO 11 PM PDT TUESDAY...

* WHAT...Temperatures to 105 will produce moderate to major heat
  risk.

* WHERE...Interior Del Norte.

* WHEN...From 11 AM to 11 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ105-106-031230-
/O.EXB.KEKA.HT.Y.0003.260804T1800Z-260806T0400Z/
Northeastern Interior Humboldt-Southeastern Interior Humboldt-
Including Alderpoint, Dinsmore, Orleans, Pepperwood, Garberville,
Shively, Bridgeville, Willow Creek, Weitchpec, Benbow, Bull Creek,
Hoopa, and Kneeland
922 PM PDT Sun Aug 2 2026

...HEAT ADVISORY IN EFFECT FROM 11 AM TUESDAY TO 9 PM PDT
WEDNESDAY...

* WHAT...Temperatures to 105 to 110 will produce moderate to major
  heat risk.

* WHERE...Humboldt Interior.

* WHEN...From 11 AM Tuesday to 9 PM PDT Wednesday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ108-116-117-031230-
/O.EXB.KEKA.HT.Y.0003.260804T1800Z-260807T0600Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Forest Glen, Weaverville, Del Loma, Douglas City, Helena,
Carrville, Hayfork, Trinity Center, Junction City, Big Bar, Zenia,
Hyampom, Peanut, and Ruth
922 PM PDT Sun Aug 2 2026

...HEAT ADVISORY IN EFFECT FROM 11 AM TUESDAY TO 11 PM PDT
THURSDAY...

* WHAT...Temperatures of 105 to 110 will produce moderate to major
  heat risk.

* WHERE...Trinity County.

* WHEN...From 11 AM Tuesday to 11 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ110-111-113-114-118>120-031230-
/O.CON.KEKA.HT.Y.0003.260803T1800Z-260805T0600Z/
Northwestern Interior Mendocino-Northeastern Interior Mendocino-
Southeastern Interior Mendocino-Northern Lake-Western Lake-
Southwestern Lake-Eastern Lake-
Including Upper Lake, Talmage, Redwood Valley, Hopland, Potter
Valley, Gravelly Valley Airport, Middletown, Knobcone Camp, Legget,
Clearlake, Cobb, Finley, Clearlake Park, Lakeport, Hidden Valley
Lake, Calpella, Covelo, Willits, Ukiah, and Laytonville
922 PM PDT Sun Aug 2 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM MONDAY TO 11 PM PDT
TUESDAY...

* WHAT...Temperatures to 105 will produce moderate to major heat
  risk.

* WHERE...Northern Mendocino Interior, Lake County, and Southeastern
  Interior Mendocino.

* WHEN...From 11 AM Monday to 11 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

MKK


Action: Continued
Issued At: 2026-08-02 23:22:36

402 
WWUS76 KEKA 030422
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
922 PM PDT Sun Aug 2 2026

CAZ102-031230-
/O.EXB.KEKA.HT.Y.0003.260804T1800Z-260805T0600Z/
Interior Del Norte-
Including Gasquet
922 PM PDT Sun Aug 2 2026

...HEAT ADVISORY IN EFFECT FROM 11 AM TO 11 PM PDT TUESDAY...

* WHAT...Temperatures to 105 will produce moderate to major heat
  risk.

* WHERE...Interior Del Norte.

* WHEN...From 11 AM to 11 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ105-106-031230-
/O.EXB.KEKA.HT.Y.0003.260804T1800Z-260806T0400Z/
Northeastern Interior Humboldt-Southeastern Interior Humboldt-
Including Alderpoint, Dinsmore, Orleans, Pepperwood, Garberville,
Shively, Bridgeville, Willow Creek, Weitchpec, Benbow, Bull Creek,
Hoopa, and Kneeland
922 PM PDT Sun Aug 2 2026

...HEAT ADVISORY IN EFFECT FROM 11 AM TUESDAY TO 9 PM PDT
WEDNESDAY...

* WHAT...Temperatures to 105 to 110 will produce moderate to major
  heat risk.

* WHERE...Humboldt Interior.

* WHEN...From 11 AM Tuesday to 9 PM PDT Wednesday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ108-116-117-031230-
/O.EXB.KEKA.HT.Y.0003.260804T1800Z-260807T0600Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Forest Glen, Weaverville, Del Loma, Douglas City, Helena,
Carrville, Hayfork, Trinity Center, Junction City, Big Bar, Zenia,
Hyampom, Peanut, and Ruth
922 PM PDT Sun Aug 2 2026

...HEAT ADVISORY IN EFFECT FROM 11 AM TUESDAY TO 11 PM PDT
THURSDAY...

* WHAT...Temperatures of 105 to 110 will produce moderate to major
  heat risk.

* WHERE...Trinity County.

* WHEN...From 11 AM Tuesday to 11 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ110-111-113-114-118>120-031230-
/O.CON.KEKA.HT.Y.0003.260803T1800Z-260805T0600Z/
Northwestern Interior Mendocino-Northeastern Interior Mendocino-
Southeastern Interior Mendocino-Northern Lake-Western Lake-
Southwestern Lake-Eastern Lake-
Including Upper Lake, Talmage, Redwood Valley, Hopland, Potter
Valley, Gravelly Valley Airport, Middletown, Knobcone Camp, Legget,
Clearlake, Cobb, Finley, Clearlake Park, Lakeport, Hidden Valley
Lake, Calpella, Covelo, Willits, Ukiah, and Laytonville
922 PM PDT Sun Aug 2 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM MONDAY TO 11 PM PDT
TUESDAY...

* WHAT...Temperatures to 105 will produce moderate to major heat
  risk.

* WHERE...Northern Mendocino Interior, Lake County, and Southeastern
  Interior Mendocino.

* WHEN...From 11 AM Monday to 11 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

MKK


Action: Continued
Issued At: 2026-08-03 07:02:39

089 
WWUS76 KEKA 031202
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
502 AM PDT Mon Aug 3 2026

CAZ110-111-113-114-118>120-040600-
/O.CON.KEKA.HT.Y.0003.260803T1800Z-260805T0600Z/
Northwestern Interior Mendocino-Northeastern Interior Mendocino-
Southeastern Interior Mendocino-Northern Lake-Western Lake-
Southwestern Lake-Eastern Lake-
Including Finley, Redwood Valley, Calpella, Knobcone Camp,
Middletown, Clearlake, Laytonville, Gravelly Valley Airport,
Lakeport, Willits, Legget, Talmage, Upper Lake, Potter Valley,
Hopland, Ukiah, Clearlake Park, Hidden Valley Lake, Cobb, and Covelo
502 AM PDT Mon Aug 3 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 11 PM
PDT TUESDAY...

* WHAT...Temperatures up to 105 will produce moderate to major heat
  risk.

* WHERE...Northern Mendocino Interior, Lake County, and Southeastern
  Interior Mendocino.

* WHEN...From 11 AM this morning to 11 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ102-040600-
/O.CON.KEKA.HT.Y.0003.260804T1800Z-260805T0600Z/
Interior Del Norte-
Including Gasquet
502 AM PDT Mon Aug 3 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TO 11 PM PDT TUESDAY...

* WHAT...Temperatures up to 105 will produce moderate to major heat
  risk.

* WHERE...Interior Del Norte.

* WHEN...From 11 AM to 11 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ105-106-040600-
/O.CON.KEKA.HT.Y.0003.260804T1800Z-260806T0400Z/
Northeastern Interior Humboldt-Southeastern Interior Humboldt-
Including Benbow, Bridgeville, Garberville, Pepperwood, Shively,
Kneeland, Hoopa, Bull Creek, Willow Creek, Orleans, Weitchpec,
Alderpoint, and Dinsmore
502 AM PDT Mon Aug 3 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TUESDAY TO 9 PM PDT
WEDNESDAY...

* WHAT...Temperatures to 105 to 110 will produce moderate to major
  heat risk.

* WHERE...Humboldt Interior.

* WHEN...From 11 AM Tuesday to 9 PM PDT Wednesday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ108-116-117-040600-
/O.CON.KEKA.HT.Y.0003.260804T1800Z-260807T0600Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Del Loma, Big Bar, Hyampom, Helena, Carrville, Trinity
Center, Hayfork, Peanut, Douglas City, Weaverville, Zenia, Ruth,
Junction City, and Forest Glen
502 AM PDT Mon Aug 3 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TUESDAY TO 11 PM PDT
THURSDAY...

* WHAT...Temperatures of 105 to 110 will produce moderate to major
  heat risk.

* WHERE...Trinity County.

* WHEN...From 11 AM Tuesday to 11 PM PDT Thursday.

* IMPACTS...Hot temperatures and high humidity may cause heat
  illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

JB


Action: Continued
Issued At: 2026-08-03 07:02:39

089 
WWUS76 KEKA 031202
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
502 AM PDT Mon Aug 3 2026

CAZ110-111-113-114-118>120-040600-
/O.CON.KEKA.HT.Y.0003.260803T1800Z-260805T0600Z/
Northwestern Interior Mendocino-Northeastern Interior Mendocino-
Southeastern Interior Mendocino-Northern Lake-Western Lake-
Southwestern Lake-Eastern Lake-
Including Finley, Redwood Valley, Calpella, Knobcone Camp,
Middletown, Clearlake, Laytonville, Gravelly Valley Airport,
Lakeport, Willits, Legget, Talmage, Upper Lake, Potter Valley,
Hopland, Ukiah, Clearlake Park, Hidden Valley Lake, Cobb, and Covelo
502 AM PDT Mon Aug 3 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 11 PM
PDT TUESDAY...

* WHAT...Temperatures up to 105 will produce moderate to major heat
  risk.

* WHERE...Northern Mendocino Interior, Lake County, and Southeastern
  Interior Mendocino.

* WHEN...From 11 AM this morning to 11 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ102-040600-
/O.CON.KEKA.HT.Y.0003.260804T1800Z-260805T0600Z/
Interior Del Norte-
Including Gasquet
502 AM PDT Mon Aug 3 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TO 11 PM PDT TUESDAY...

* WHAT...Temperatures up to 105 will produce moderate to major heat
  risk.

* WHERE...Interior Del Norte.

* WHEN...From 11 AM to 11 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ105-106-040600-
/O.CON.KEKA.HT.Y.0003.260804T1800Z-260806T0400Z/
Northeastern Interior Humboldt-Southeastern Interior Humboldt-
Including Benbow, Bridgeville, Garberville, Pepperwood, Shively,
Kneeland, Hoopa, Bull Creek, Willow Creek, Orleans, Weitchpec,
Alderpoint, and Dinsmore
502 AM PDT Mon Aug 3 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TUESDAY TO 9 PM PDT
WEDNESDAY...

* WHAT...Temperatures to 105 to 110 will produce moderate to major
  heat risk.

* WHERE...Humboldt Interior.

* WHEN...From 11 AM Tuesday to 9 PM PDT Wednesday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ108-116-117-040600-
/O.CON.KEKA.HT.Y.0003.260804T1800Z-260807T0600Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Del Loma, Big Bar, Hyampom, Helena, Carrville, Trinity
Center, Hayfork, Peanut, Douglas City, Weaverville, Zenia, Ruth,
Junction City, and Forest Glen
502 AM PDT Mon Aug 3 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TUESDAY TO 11 PM PDT
THURSDAY...

* WHAT...Temperatures of 105 to 110 will produce moderate to major
  heat risk.

* WHERE...Trinity County.

* WHEN...From 11 AM Tuesday to 11 PM PDT Thursday.

* IMPACTS...Hot temperatures and high humidity may cause heat
  illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

JB


Action: Continued
Issued At: 2026-08-03 07:02:39

089 
WWUS76 KEKA 031202
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
502 AM PDT Mon Aug 3 2026

CAZ110-111-113-114-118>120-040600-
/O.CON.KEKA.HT.Y.0003.260803T1800Z-260805T0600Z/
Northwestern Interior Mendocino-Northeastern Interior Mendocino-
Southeastern Interior Mendocino-Northern Lake-Western Lake-
Southwestern Lake-Eastern Lake-
Including Finley, Redwood Valley, Calpella, Knobcone Camp,
Middletown, Clearlake, Laytonville, Gravelly Valley Airport,
Lakeport, Willits, Legget, Talmage, Upper Lake, Potter Valley,
Hopland, Ukiah, Clearlake Park, Hidden Valley Lake, Cobb, and Covelo
502 AM PDT Mon Aug 3 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 11 PM
PDT TUESDAY...

* WHAT...Temperatures up to 105 will produce moderate to major heat
  risk.

* WHERE...Northern Mendocino Interior, Lake County, and Southeastern
  Interior Mendocino.

* WHEN...From 11 AM this morning to 11 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ102-040600-
/O.CON.KEKA.HT.Y.0003.260804T1800Z-260805T0600Z/
Interior Del Norte-
Including Gasquet
502 AM PDT Mon Aug 3 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TO 11 PM PDT TUESDAY...

* WHAT...Temperatures up to 105 will produce moderate to major heat
  risk.

* WHERE...Interior Del Norte.

* WHEN...From 11 AM to 11 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ105-106-040600-
/O.CON.KEKA.HT.Y.0003.260804T1800Z-260806T0400Z/
Northeastern Interior Humboldt-Southeastern Interior Humboldt-
Including Benbow, Bridgeville, Garberville, Pepperwood, Shively,
Kneeland, Hoopa, Bull Creek, Willow Creek, Orleans, Weitchpec,
Alderpoint, and Dinsmore
502 AM PDT Mon Aug 3 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TUESDAY TO 9 PM PDT
WEDNESDAY...

* WHAT...Temperatures to 105 to 110 will produce moderate to major
  heat risk.

* WHERE...Humboldt Interior.

* WHEN...From 11 AM Tuesday to 9 PM PDT Wednesday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ108-116-117-040600-
/O.CON.KEKA.HT.Y.0003.260804T1800Z-260807T0600Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Del Loma, Big Bar, Hyampom, Helena, Carrville, Trinity
Center, Hayfork, Peanut, Douglas City, Weaverville, Zenia, Ruth,
Junction City, and Forest Glen
502 AM PDT Mon Aug 3 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TUESDAY TO 11 PM PDT
THURSDAY...

* WHAT...Temperatures of 105 to 110 will produce moderate to major
  heat risk.

* WHERE...Trinity County.

* WHEN...From 11 AM Tuesday to 11 PM PDT Thursday.

* IMPACTS...Hot temperatures and high humidity may cause heat
  illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

JB


Action: Continued
Issued At: 2026-08-03 07:02:39

089 
WWUS76 KEKA 031202
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
502 AM PDT Mon Aug 3 2026

CAZ110-111-113-114-118>120-040600-
/O.CON.KEKA.HT.Y.0003.260803T1800Z-260805T0600Z/
Northwestern Interior Mendocino-Northeastern Interior Mendocino-
Southeastern Interior Mendocino-Northern Lake-Western Lake-
Southwestern Lake-Eastern Lake-
Including Finley, Redwood Valley, Calpella, Knobcone Camp,
Middletown, Clearlake, Laytonville, Gravelly Valley Airport,
Lakeport, Willits, Legget, Talmage, Upper Lake, Potter Valley,
Hopland, Ukiah, Clearlake Park, Hidden Valley Lake, Cobb, and Covelo
502 AM PDT Mon Aug 3 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 11 PM
PDT TUESDAY...

* WHAT...Temperatures up to 105 will produce moderate to major heat
  risk.

* WHERE...Northern Mendocino Interior, Lake County, and Southeastern
  Interior Mendocino.

* WHEN...From 11 AM this morning to 11 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ102-040600-
/O.CON.KEKA.HT.Y.0003.260804T1800Z-260805T0600Z/
Interior Del Norte-
Including Gasquet
502 AM PDT Mon Aug 3 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TO 11 PM PDT TUESDAY...

* WHAT...Temperatures up to 105 will produce moderate to major heat
  risk.

* WHERE...Interior Del Norte.

* WHEN...From 11 AM to 11 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ105-106-040600-
/O.CON.KEKA.HT.Y.0003.260804T1800Z-260806T0400Z/
Northeastern Interior Humboldt-Southeastern Interior Humboldt-
Including Benbow, Bridgeville, Garberville, Pepperwood, Shively,
Kneeland, Hoopa, Bull Creek, Willow Creek, Orleans, Weitchpec,
Alderpoint, and Dinsmore
502 AM PDT Mon Aug 3 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TUESDAY TO 9 PM PDT
WEDNESDAY...

* WHAT...Temperatures to 105 to 110 will produce moderate to major
  heat risk.

* WHERE...Humboldt Interior.

* WHEN...From 11 AM Tuesday to 9 PM PDT Wednesday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ108-116-117-040600-
/O.CON.KEKA.HT.Y.0003.260804T1800Z-260807T0600Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Del Loma, Big Bar, Hyampom, Helena, Carrville, Trinity
Center, Hayfork, Peanut, Douglas City, Weaverville, Zenia, Ruth,
Junction City, and Forest Glen
502 AM PDT Mon Aug 3 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TUESDAY TO 11 PM PDT
THURSDAY...

* WHAT...Temperatures of 105 to 110 will produce moderate to major
  heat risk.

* WHERE...Trinity County.

* WHEN...From 11 AM Tuesday to 11 PM PDT Thursday.

* IMPACTS...Hot temperatures and high humidity may cause heat
  illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

JB


Action: Continued
Issued At: 2026-08-03 22:55:36

806 
WWUS76 KEKA 040355
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
855 PM PDT Mon Aug 3 2026

CAZ110-111-113-114-118>120-041200-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260805T0600Z/
Northwestern Interior Mendocino-Northeastern Interior Mendocino-
Southeastern Interior Mendocino-Northern Lake-Western Lake-
Southwestern Lake-Eastern Lake-
Including Lakeport, Clearlake, Middletown, Finley, Talmage, Willits,
Laytonville, Ukiah, Covelo, Legget, Hopland, Hidden Valley Lake,
Calpella, Redwood Valley, Upper Lake, Knobcone Camp, Cobb, Clearlake
Park, Gravelly Valley Airport, and Potter Valley
855 PM PDT Mon Aug 3 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT TUESDAY...

* WHAT...Temperatures up to 105 will produce moderate to major heat
  risk.

* WHERE...Northern Mendocino Interior, Lake County, and Southeastern
  Interior Mendocino.

* WHEN...Until 11 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ102-041200-
/O.CON.KEKA.HT.Y.0003.260804T1800Z-260805T0600Z/
Interior Del Norte-
Including Gasquet
855 PM PDT Mon Aug 3 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TO 11 PM PDT TUESDAY...

* WHAT...Temperatures up to 105 will produce moderate to major heat
  risk.

* WHERE...Interior Del Norte.

* WHEN...From 11 AM to 11 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ105-106-041200-
/O.CON.KEKA.HT.Y.0003.260804T1800Z-260806T0400Z/
Northeastern Interior Humboldt-Southeastern Interior Humboldt-
Including Bull Creek, Pepperwood, Shively, Garberville, Bridgeville,
Dinsmore, Kneeland, Alderpoint, Orleans, Hoopa, Benbow, Weitchpec,
and Willow Creek
855 PM PDT Mon Aug 3 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TUESDAY TO 9 PM PDT
WEDNESDAY...

* WHAT...Temperatures around 105 will produce moderate to major heat
  risk in the valleys.

* WHERE...Humboldt Interior.

* WHEN...From 11 AM Tuesday to 9 PM PDT Wednesday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ108-116-117-041200-
/O.CON.KEKA.HT.Y.0003.260804T1800Z-260807T0600Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Del Loma, Zenia, Weaverville, Trinity Center, Ruth,
Hyampom, Douglas City, Helena, Hayfork, Junction City, Carrville, Big
Bar, Forest Glen, and Peanut
855 PM PDT Mon Aug 3 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TUESDAY TO 11 PM PDT
THURSDAY...

* WHAT...Temperatures of 105 to 110 will produce moderate to major
  heat risk.

* WHERE...Trinity County.

* WHEN...From 11 AM Tuesday to 11 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

MKK


Action: Continued
Issued At: 2026-08-03 22:55:36

806 
WWUS76 KEKA 040355
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
855 PM PDT Mon Aug 3 2026

CAZ110-111-113-114-118>120-041200-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260805T0600Z/
Northwestern Interior Mendocino-Northeastern Interior Mendocino-
Southeastern Interior Mendocino-Northern Lake-Western Lake-
Southwestern Lake-Eastern Lake-
Including Lakeport, Clearlake, Middletown, Finley, Talmage, Willits,
Laytonville, Ukiah, Covelo, Legget, Hopland, Hidden Valley Lake,
Calpella, Redwood Valley, Upper Lake, Knobcone Camp, Cobb, Clearlake
Park, Gravelly Valley Airport, and Potter Valley
855 PM PDT Mon Aug 3 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT TUESDAY...

* WHAT...Temperatures up to 105 will produce moderate to major heat
  risk.

* WHERE...Northern Mendocino Interior, Lake County, and Southeastern
  Interior Mendocino.

* WHEN...Until 11 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ102-041200-
/O.CON.KEKA.HT.Y.0003.260804T1800Z-260805T0600Z/
Interior Del Norte-
Including Gasquet
855 PM PDT Mon Aug 3 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TO 11 PM PDT TUESDAY...

* WHAT...Temperatures up to 105 will produce moderate to major heat
  risk.

* WHERE...Interior Del Norte.

* WHEN...From 11 AM to 11 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ105-106-041200-
/O.CON.KEKA.HT.Y.0003.260804T1800Z-260806T0400Z/
Northeastern Interior Humboldt-Southeastern Interior Humboldt-
Including Bull Creek, Pepperwood, Shively, Garberville, Bridgeville,
Dinsmore, Kneeland, Alderpoint, Orleans, Hoopa, Benbow, Weitchpec,
and Willow Creek
855 PM PDT Mon Aug 3 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TUESDAY TO 9 PM PDT
WEDNESDAY...

* WHAT...Temperatures around 105 will produce moderate to major heat
  risk in the valleys.

* WHERE...Humboldt Interior.

* WHEN...From 11 AM Tuesday to 9 PM PDT Wednesday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ108-116-117-041200-
/O.CON.KEKA.HT.Y.0003.260804T1800Z-260807T0600Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Del Loma, Zenia, Weaverville, Trinity Center, Ruth,
Hyampom, Douglas City, Helena, Hayfork, Junction City, Carrville, Big
Bar, Forest Glen, and Peanut
855 PM PDT Mon Aug 3 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TUESDAY TO 11 PM PDT
THURSDAY...

* WHAT...Temperatures of 105 to 110 will produce moderate to major
  heat risk.

* WHERE...Trinity County.

* WHEN...From 11 AM Tuesday to 11 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

MKK


Action: Continued
Issued At: 2026-08-03 22:55:36

806 
WWUS76 KEKA 040355
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
855 PM PDT Mon Aug 3 2026

CAZ110-111-113-114-118>120-041200-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260805T0600Z/
Northwestern Interior Mendocino-Northeastern Interior Mendocino-
Southeastern Interior Mendocino-Northern Lake-Western Lake-
Southwestern Lake-Eastern Lake-
Including Lakeport, Clearlake, Middletown, Finley, Talmage, Willits,
Laytonville, Ukiah, Covelo, Legget, Hopland, Hidden Valley Lake,
Calpella, Redwood Valley, Upper Lake, Knobcone Camp, Cobb, Clearlake
Park, Gravelly Valley Airport, and Potter Valley
855 PM PDT Mon Aug 3 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT TUESDAY...

* WHAT...Temperatures up to 105 will produce moderate to major heat
  risk.

* WHERE...Northern Mendocino Interior, Lake County, and Southeastern
  Interior Mendocino.

* WHEN...Until 11 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ102-041200-
/O.CON.KEKA.HT.Y.0003.260804T1800Z-260805T0600Z/
Interior Del Norte-
Including Gasquet
855 PM PDT Mon Aug 3 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TO 11 PM PDT TUESDAY...

* WHAT...Temperatures up to 105 will produce moderate to major heat
  risk.

* WHERE...Interior Del Norte.

* WHEN...From 11 AM to 11 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ105-106-041200-
/O.CON.KEKA.HT.Y.0003.260804T1800Z-260806T0400Z/
Northeastern Interior Humboldt-Southeastern Interior Humboldt-
Including Bull Creek, Pepperwood, Shively, Garberville, Bridgeville,
Dinsmore, Kneeland, Alderpoint, Orleans, Hoopa, Benbow, Weitchpec,
and Willow Creek
855 PM PDT Mon Aug 3 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TUESDAY TO 9 PM PDT
WEDNESDAY...

* WHAT...Temperatures around 105 will produce moderate to major heat
  risk in the valleys.

* WHERE...Humboldt Interior.

* WHEN...From 11 AM Tuesday to 9 PM PDT Wednesday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ108-116-117-041200-
/O.CON.KEKA.HT.Y.0003.260804T1800Z-260807T0600Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Del Loma, Zenia, Weaverville, Trinity Center, Ruth,
Hyampom, Douglas City, Helena, Hayfork, Junction City, Carrville, Big
Bar, Forest Glen, and Peanut
855 PM PDT Mon Aug 3 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TUESDAY TO 11 PM PDT
THURSDAY...

* WHAT...Temperatures of 105 to 110 will produce moderate to major
  heat risk.

* WHERE...Trinity County.

* WHEN...From 11 AM Tuesday to 11 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

MKK


Action: Continued
Issued At: 2026-08-03 22:55:36

806 
WWUS76 KEKA 040355
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
855 PM PDT Mon Aug 3 2026

CAZ110-111-113-114-118>120-041200-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260805T0600Z/
Northwestern Interior Mendocino-Northeastern Interior Mendocino-
Southeastern Interior Mendocino-Northern Lake-Western Lake-
Southwestern Lake-Eastern Lake-
Including Lakeport, Clearlake, Middletown, Finley, Talmage, Willits,
Laytonville, Ukiah, Covelo, Legget, Hopland, Hidden Valley Lake,
Calpella, Redwood Valley, Upper Lake, Knobcone Camp, Cobb, Clearlake
Park, Gravelly Valley Airport, and Potter Valley
855 PM PDT Mon Aug 3 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT TUESDAY...

* WHAT...Temperatures up to 105 will produce moderate to major heat
  risk.

* WHERE...Northern Mendocino Interior, Lake County, and Southeastern
  Interior Mendocino.

* WHEN...Until 11 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ102-041200-
/O.CON.KEKA.HT.Y.0003.260804T1800Z-260805T0600Z/
Interior Del Norte-
Including Gasquet
855 PM PDT Mon Aug 3 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TO 11 PM PDT TUESDAY...

* WHAT...Temperatures up to 105 will produce moderate to major heat
  risk.

* WHERE...Interior Del Norte.

* WHEN...From 11 AM to 11 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ105-106-041200-
/O.CON.KEKA.HT.Y.0003.260804T1800Z-260806T0400Z/
Northeastern Interior Humboldt-Southeastern Interior Humboldt-
Including Bull Creek, Pepperwood, Shively, Garberville, Bridgeville,
Dinsmore, Kneeland, Alderpoint, Orleans, Hoopa, Benbow, Weitchpec,
and Willow Creek
855 PM PDT Mon Aug 3 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TUESDAY TO 9 PM PDT
WEDNESDAY...

* WHAT...Temperatures around 105 will produce moderate to major heat
  risk in the valleys.

* WHERE...Humboldt Interior.

* WHEN...From 11 AM Tuesday to 9 PM PDT Wednesday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ108-116-117-041200-
/O.CON.KEKA.HT.Y.0003.260804T1800Z-260807T0600Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Del Loma, Zenia, Weaverville, Trinity Center, Ruth,
Hyampom, Douglas City, Helena, Hayfork, Junction City, Carrville, Big
Bar, Forest Glen, and Peanut
855 PM PDT Mon Aug 3 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TUESDAY TO 11 PM PDT
THURSDAY...

* WHAT...Temperatures of 105 to 110 will produce moderate to major
  heat risk.

* WHERE...Trinity County.

* WHEN...From 11 AM Tuesday to 11 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

MKK


Action: Continued
Issued At: 2026-08-04 04:58:07

570 
WWUS76 KEKA 040957
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
257 AM PDT Tue Aug 4 2026

CAZ105-106-050600-
/O.EXT.KEKA.HT.Y.0003.260804T1800Z-260807T0600Z/
Northeastern Interior Humboldt-Southeastern Interior Humboldt-
Including Garberville, Weitchpec, Dinsmore, Bull Creek, Benbow,
Kneeland, Shively, Alderpoint, Orleans, Hoopa, Willow Creek,
Pepperwood, and Bridgeville
257 AM PDT Tue Aug 4 2026

...HEAT ADVISORY NOW IN EFFECT FROM 11 AM THIS MORNING TO 11 PM PDT
THURSDAY...

* WHAT...Temperatures of 105 to 110 will produce moderate to major
  heat risk.

* WHERE...Humboldt Interior.

* WHEN...From 11 AM this morning to 11 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ110-111-113-114-118>120-050600-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260805T0600Z/
Northwestern Interior Mendocino-Northeastern Interior Mendocino-
Southeastern Interior Mendocino-Northern Lake-Western Lake-
Southwestern Lake-Eastern Lake-
Including Lakeport, Clearlake Park, Ukiah, Willits, Legget, Cobb,
Talmage, Finley, Clearlake, Potter Valley, Covelo, Redwood Valley,
Middletown, Calpella, Gravelly Valley Airport, Hopland, Laytonville,
Knobcone Camp, Hidden Valley Lake, and Upper Lake
257 AM PDT Tue Aug 4 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING...

* WHAT...Temperatures up to 110 will produce moderate to major heat
  risk.

* WHERE...Northern Mendocino Interior, Lake County, and Southeastern
  Interior Mendocino.

* WHEN...Until 11 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ102-050600-
/O.CON.KEKA.HT.Y.0003.260804T1800Z-260805T0600Z/
Interior Del Norte-
Including Gasquet
257 AM PDT Tue Aug 4 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 11 PM
PDT THIS EVENING...

* WHAT...Temperatures up to 105 will produce moderate to major heat
  risk.

* WHERE...Interior Del Norte.

* WHEN...From 11 AM this morning to 11 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ108-116-117-050600-
/O.CON.KEKA.HT.Y.0003.260804T1800Z-260807T0600Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Zenia, Junction City, Forest Glen, Hayfork, Big Bar, Del
Loma, Weaverville, Peanut, Trinity Center, Ruth, Hyampom, Helena,
Carrville, and Douglas City
257 AM PDT Tue Aug 4 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 11 PM
PDT THURSDAY...

* WHAT...Temperatures of 105 to 110 will produce moderate to major
  heat risk.

* WHERE...Trinity County.

* WHEN...From 11 AM this morning to 11 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

JB


Action: Continued
Issued At: 2026-08-04 04:58:07

570 
WWUS76 KEKA 040957
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
257 AM PDT Tue Aug 4 2026

CAZ105-106-050600-
/O.EXT.KEKA.HT.Y.0003.260804T1800Z-260807T0600Z/
Northeastern Interior Humboldt-Southeastern Interior Humboldt-
Including Garberville, Weitchpec, Dinsmore, Bull Creek, Benbow,
Kneeland, Shively, Alderpoint, Orleans, Hoopa, Willow Creek,
Pepperwood, and Bridgeville
257 AM PDT Tue Aug 4 2026

...HEAT ADVISORY NOW IN EFFECT FROM 11 AM THIS MORNING TO 11 PM PDT
THURSDAY...

* WHAT...Temperatures of 105 to 110 will produce moderate to major
  heat risk.

* WHERE...Humboldt Interior.

* WHEN...From 11 AM this morning to 11 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ110-111-113-114-118>120-050600-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260805T0600Z/
Northwestern Interior Mendocino-Northeastern Interior Mendocino-
Southeastern Interior Mendocino-Northern Lake-Western Lake-
Southwestern Lake-Eastern Lake-
Including Lakeport, Clearlake Park, Ukiah, Willits, Legget, Cobb,
Talmage, Finley, Clearlake, Potter Valley, Covelo, Redwood Valley,
Middletown, Calpella, Gravelly Valley Airport, Hopland, Laytonville,
Knobcone Camp, Hidden Valley Lake, and Upper Lake
257 AM PDT Tue Aug 4 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING...

* WHAT...Temperatures up to 110 will produce moderate to major heat
  risk.

* WHERE...Northern Mendocino Interior, Lake County, and Southeastern
  Interior Mendocino.

* WHEN...Until 11 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ102-050600-
/O.CON.KEKA.HT.Y.0003.260804T1800Z-260805T0600Z/
Interior Del Norte-
Including Gasquet
257 AM PDT Tue Aug 4 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 11 PM
PDT THIS EVENING...

* WHAT...Temperatures up to 105 will produce moderate to major heat
  risk.

* WHERE...Interior Del Norte.

* WHEN...From 11 AM this morning to 11 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ108-116-117-050600-
/O.CON.KEKA.HT.Y.0003.260804T1800Z-260807T0600Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Zenia, Junction City, Forest Glen, Hayfork, Big Bar, Del
Loma, Weaverville, Peanut, Trinity Center, Ruth, Hyampom, Helena,
Carrville, and Douglas City
257 AM PDT Tue Aug 4 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 11 PM
PDT THURSDAY...

* WHAT...Temperatures of 105 to 110 will produce moderate to major
  heat risk.

* WHERE...Trinity County.

* WHEN...From 11 AM this morning to 11 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

JB


Action: Time Extended
Issued At: 2026-08-04 04:58:07

570 
WWUS76 KEKA 040957
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
257 AM PDT Tue Aug 4 2026

CAZ105-106-050600-
/O.EXT.KEKA.HT.Y.0003.260804T1800Z-260807T0600Z/
Northeastern Interior Humboldt-Southeastern Interior Humboldt-
Including Garberville, Weitchpec, Dinsmore, Bull Creek, Benbow,
Kneeland, Shively, Alderpoint, Orleans, Hoopa, Willow Creek,
Pepperwood, and Bridgeville
257 AM PDT Tue Aug 4 2026

...HEAT ADVISORY NOW IN EFFECT FROM 11 AM THIS MORNING TO 11 PM PDT
THURSDAY...

* WHAT...Temperatures of 105 to 110 will produce moderate to major
  heat risk.

* WHERE...Humboldt Interior.

* WHEN...From 11 AM this morning to 11 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ110-111-113-114-118>120-050600-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260805T0600Z/
Northwestern Interior Mendocino-Northeastern Interior Mendocino-
Southeastern Interior Mendocino-Northern Lake-Western Lake-
Southwestern Lake-Eastern Lake-
Including Lakeport, Clearlake Park, Ukiah, Willits, Legget, Cobb,
Talmage, Finley, Clearlake, Potter Valley, Covelo, Redwood Valley,
Middletown, Calpella, Gravelly Valley Airport, Hopland, Laytonville,
Knobcone Camp, Hidden Valley Lake, and Upper Lake
257 AM PDT Tue Aug 4 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING...

* WHAT...Temperatures up to 110 will produce moderate to major heat
  risk.

* WHERE...Northern Mendocino Interior, Lake County, and Southeastern
  Interior Mendocino.

* WHEN...Until 11 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ102-050600-
/O.CON.KEKA.HT.Y.0003.260804T1800Z-260805T0600Z/
Interior Del Norte-
Including Gasquet
257 AM PDT Tue Aug 4 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 11 PM
PDT THIS EVENING...

* WHAT...Temperatures up to 105 will produce moderate to major heat
  risk.

* WHERE...Interior Del Norte.

* WHEN...From 11 AM this morning to 11 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ108-116-117-050600-
/O.CON.KEKA.HT.Y.0003.260804T1800Z-260807T0600Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Zenia, Junction City, Forest Glen, Hayfork, Big Bar, Del
Loma, Weaverville, Peanut, Trinity Center, Ruth, Hyampom, Helena,
Carrville, and Douglas City
257 AM PDT Tue Aug 4 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 11 PM
PDT THURSDAY...

* WHAT...Temperatures of 105 to 110 will produce moderate to major
  heat risk.

* WHERE...Trinity County.

* WHEN...From 11 AM this morning to 11 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

JB


Action: Continued
Issued At: 2026-08-04 04:58:07

570 
WWUS76 KEKA 040957
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
257 AM PDT Tue Aug 4 2026

CAZ105-106-050600-
/O.EXT.KEKA.HT.Y.0003.260804T1800Z-260807T0600Z/
Northeastern Interior Humboldt-Southeastern Interior Humboldt-
Including Garberville, Weitchpec, Dinsmore, Bull Creek, Benbow,
Kneeland, Shively, Alderpoint, Orleans, Hoopa, Willow Creek,
Pepperwood, and Bridgeville
257 AM PDT Tue Aug 4 2026

...HEAT ADVISORY NOW IN EFFECT FROM 11 AM THIS MORNING TO 11 PM PDT
THURSDAY...

* WHAT...Temperatures of 105 to 110 will produce moderate to major
  heat risk.

* WHERE...Humboldt Interior.

* WHEN...From 11 AM this morning to 11 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ110-111-113-114-118>120-050600-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260805T0600Z/
Northwestern Interior Mendocino-Northeastern Interior Mendocino-
Southeastern Interior Mendocino-Northern Lake-Western Lake-
Southwestern Lake-Eastern Lake-
Including Lakeport, Clearlake Park, Ukiah, Willits, Legget, Cobb,
Talmage, Finley, Clearlake, Potter Valley, Covelo, Redwood Valley,
Middletown, Calpella, Gravelly Valley Airport, Hopland, Laytonville,
Knobcone Camp, Hidden Valley Lake, and Upper Lake
257 AM PDT Tue Aug 4 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING...

* WHAT...Temperatures up to 110 will produce moderate to major heat
  risk.

* WHERE...Northern Mendocino Interior, Lake County, and Southeastern
  Interior Mendocino.

* WHEN...Until 11 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ102-050600-
/O.CON.KEKA.HT.Y.0003.260804T1800Z-260805T0600Z/
Interior Del Norte-
Including Gasquet
257 AM PDT Tue Aug 4 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 11 PM
PDT THIS EVENING...

* WHAT...Temperatures up to 105 will produce moderate to major heat
  risk.

* WHERE...Interior Del Norte.

* WHEN...From 11 AM this morning to 11 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ108-116-117-050600-
/O.CON.KEKA.HT.Y.0003.260804T1800Z-260807T0600Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Zenia, Junction City, Forest Glen, Hayfork, Big Bar, Del
Loma, Weaverville, Peanut, Trinity Center, Ruth, Hyampom, Helena,
Carrville, and Douglas City
257 AM PDT Tue Aug 4 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 11 PM
PDT THURSDAY...

* WHAT...Temperatures of 105 to 110 will produce moderate to major
  heat risk.

* WHERE...Trinity County.

* WHEN...From 11 AM this morning to 11 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

JB


Action: Continued
Issued At: 2026-08-04 23:26:05

330 
WWUS76 KEKA 050425
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
925 PM PDT Tue Aug 4 2026

CAZ102-050600-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260805T0600Z/
Interior Del Norte-
Including Gasquet
925 PM PDT Tue Aug 4 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING...

* WHAT...Temperatures up to 105 will produce moderate to major heat
  risk.

* WHERE...Interior Del Norte.

* WHEN...Until 11 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ105-106-051230-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260807T0600Z/
Northeastern Interior Humboldt-Southeastern Interior Humboldt-
Including Garberville, Dinsmore, Weitchpec, Bull Creek, Alderpoint,
Shively, Hoopa, Orleans, Bridgeville, Pepperwood, Kneeland, Willow
Creek, and Benbow
925 PM PDT Tue Aug 4 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THURSDAY...

* WHAT...Temperatures of 105 to 110 will produce moderate to major
  heat risk.

* WHERE...Humboldt Interior.

* WHEN...Until 11 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ108-116-117-051230-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260807T0600Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Junction City, Douglas City, Hayfork, Del Loma, Carrville,
Big Bar, Zenia, Helena, Weaverville, Forest Glen, Trinity Center,
Ruth, Peanut, and Hyampom
925 PM PDT Tue Aug 4 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THURSDAY...

* WHAT...Temperatures of 105 to 110 will produce moderate to major
  heat risk.

* WHERE...Trinity County.

* WHEN...Until 11 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ110-111-113-114-118>120-050600-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260805T0600Z/
Northwestern Interior Mendocino-Northeastern Interior Mendocino-
Southeastern Interior Mendocino-Northern Lake-Western Lake-
Southwestern Lake-Eastern Lake-
Including Clearlake Park, Ukiah, Calpella, Lakeport, Willits, Covelo,
Talmage, Finley, Cobb, Hidden Valley Lake, Knobcone Camp, Legget,
Potter Valley, Redwood Valley, Hopland, Upper Lake, Middletown,
Gravelly Valley Airport, Laytonville, and Clearlake
925 PM PDT Tue Aug 4 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING...

* WHAT...Temperatures up to 110 will produce moderate to major heat
  risk.

* WHERE...Northern Mendocino Interior, Lake County, and Southeastern
  Interior Mendocino.

* WHEN...Until 11 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

EYS


Action: Continued
Issued At: 2026-08-04 23:26:05

330 
WWUS76 KEKA 050425
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
925 PM PDT Tue Aug 4 2026

CAZ102-050600-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260805T0600Z/
Interior Del Norte-
Including Gasquet
925 PM PDT Tue Aug 4 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING...

* WHAT...Temperatures up to 105 will produce moderate to major heat
  risk.

* WHERE...Interior Del Norte.

* WHEN...Until 11 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ105-106-051230-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260807T0600Z/
Northeastern Interior Humboldt-Southeastern Interior Humboldt-
Including Garberville, Dinsmore, Weitchpec, Bull Creek, Alderpoint,
Shively, Hoopa, Orleans, Bridgeville, Pepperwood, Kneeland, Willow
Creek, and Benbow
925 PM PDT Tue Aug 4 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THURSDAY...

* WHAT...Temperatures of 105 to 110 will produce moderate to major
  heat risk.

* WHERE...Humboldt Interior.

* WHEN...Until 11 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ108-116-117-051230-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260807T0600Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Junction City, Douglas City, Hayfork, Del Loma, Carrville,
Big Bar, Zenia, Helena, Weaverville, Forest Glen, Trinity Center,
Ruth, Peanut, and Hyampom
925 PM PDT Tue Aug 4 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THURSDAY...

* WHAT...Temperatures of 105 to 110 will produce moderate to major
  heat risk.

* WHERE...Trinity County.

* WHEN...Until 11 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ110-111-113-114-118>120-050600-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260805T0600Z/
Northwestern Interior Mendocino-Northeastern Interior Mendocino-
Southeastern Interior Mendocino-Northern Lake-Western Lake-
Southwestern Lake-Eastern Lake-
Including Clearlake Park, Ukiah, Calpella, Lakeport, Willits, Covelo,
Talmage, Finley, Cobb, Hidden Valley Lake, Knobcone Camp, Legget,
Potter Valley, Redwood Valley, Hopland, Upper Lake, Middletown,
Gravelly Valley Airport, Laytonville, and Clearlake
925 PM PDT Tue Aug 4 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING...

* WHAT...Temperatures up to 110 will produce moderate to major heat
  risk.

* WHERE...Northern Mendocino Interior, Lake County, and Southeastern
  Interior Mendocino.

* WHEN...Until 11 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

EYS


Action: Continued
Issued At: 2026-08-04 23:26:05

330 
WWUS76 KEKA 050425
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
925 PM PDT Tue Aug 4 2026

CAZ102-050600-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260805T0600Z/
Interior Del Norte-
Including Gasquet
925 PM PDT Tue Aug 4 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING...

* WHAT...Temperatures up to 105 will produce moderate to major heat
  risk.

* WHERE...Interior Del Norte.

* WHEN...Until 11 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ105-106-051230-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260807T0600Z/
Northeastern Interior Humboldt-Southeastern Interior Humboldt-
Including Garberville, Dinsmore, Weitchpec, Bull Creek, Alderpoint,
Shively, Hoopa, Orleans, Bridgeville, Pepperwood, Kneeland, Willow
Creek, and Benbow
925 PM PDT Tue Aug 4 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THURSDAY...

* WHAT...Temperatures of 105 to 110 will produce moderate to major
  heat risk.

* WHERE...Humboldt Interior.

* WHEN...Until 11 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ108-116-117-051230-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260807T0600Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Junction City, Douglas City, Hayfork, Del Loma, Carrville,
Big Bar, Zenia, Helena, Weaverville, Forest Glen, Trinity Center,
Ruth, Peanut, and Hyampom
925 PM PDT Tue Aug 4 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THURSDAY...

* WHAT...Temperatures of 105 to 110 will produce moderate to major
  heat risk.

* WHERE...Trinity County.

* WHEN...Until 11 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ110-111-113-114-118>120-050600-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260805T0600Z/
Northwestern Interior Mendocino-Northeastern Interior Mendocino-
Southeastern Interior Mendocino-Northern Lake-Western Lake-
Southwestern Lake-Eastern Lake-
Including Clearlake Park, Ukiah, Calpella, Lakeport, Willits, Covelo,
Talmage, Finley, Cobb, Hidden Valley Lake, Knobcone Camp, Legget,
Potter Valley, Redwood Valley, Hopland, Upper Lake, Middletown,
Gravelly Valley Airport, Laytonville, and Clearlake
925 PM PDT Tue Aug 4 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING...

* WHAT...Temperatures up to 110 will produce moderate to major heat
  risk.

* WHERE...Northern Mendocino Interior, Lake County, and Southeastern
  Interior Mendocino.

* WHEN...Until 11 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

EYS


Action: Continued
Issued At: 2026-08-04 23:26:05

330 
WWUS76 KEKA 050425
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
925 PM PDT Tue Aug 4 2026

CAZ102-050600-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260805T0600Z/
Interior Del Norte-
Including Gasquet
925 PM PDT Tue Aug 4 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING...

* WHAT...Temperatures up to 105 will produce moderate to major heat
  risk.

* WHERE...Interior Del Norte.

* WHEN...Until 11 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ105-106-051230-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260807T0600Z/
Northeastern Interior Humboldt-Southeastern Interior Humboldt-
Including Garberville, Dinsmore, Weitchpec, Bull Creek, Alderpoint,
Shively, Hoopa, Orleans, Bridgeville, Pepperwood, Kneeland, Willow
Creek, and Benbow
925 PM PDT Tue Aug 4 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THURSDAY...

* WHAT...Temperatures of 105 to 110 will produce moderate to major
  heat risk.

* WHERE...Humboldt Interior.

* WHEN...Until 11 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ108-116-117-051230-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260807T0600Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Junction City, Douglas City, Hayfork, Del Loma, Carrville,
Big Bar, Zenia, Helena, Weaverville, Forest Glen, Trinity Center,
Ruth, Peanut, and Hyampom
925 PM PDT Tue Aug 4 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THURSDAY...

* WHAT...Temperatures of 105 to 110 will produce moderate to major
  heat risk.

* WHERE...Trinity County.

* WHEN...Until 11 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ110-111-113-114-118>120-050600-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260805T0600Z/
Northwestern Interior Mendocino-Northeastern Interior Mendocino-
Southeastern Interior Mendocino-Northern Lake-Western Lake-
Southwestern Lake-Eastern Lake-
Including Clearlake Park, Ukiah, Calpella, Lakeport, Willits, Covelo,
Talmage, Finley, Cobb, Hidden Valley Lake, Knobcone Camp, Legget,
Potter Valley, Redwood Valley, Hopland, Upper Lake, Middletown,
Gravelly Valley Airport, Laytonville, and Clearlake
925 PM PDT Tue Aug 4 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING...

* WHAT...Temperatures up to 110 will produce moderate to major heat
  risk.

* WHERE...Northern Mendocino Interior, Lake County, and Southeastern
  Interior Mendocino.

* WHEN...Until 11 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

EYS


Action: Continued
Issued At: 2026-08-05 00:47:07

353 
WWUS76 KEKA 050546
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
1046 PM PDT Tue Aug 4 2026

CAZ102-110-111-113-114-118>120-050700-
/O.EXP.KEKA.HT.Y.0003.000000T0000Z-260805T0600Z/
Interior Del Norte-Northwestern Interior Mendocino-Northeastern
Interior Mendocino-Southeastern Interior Mendocino-Northern Lake-
Western Lake-Southwestern Lake-Eastern Lake-
Including Clearlake Park, Ukiah, Calpella, Lakeport, Willits, Covelo,
Talmage, Finley, Cobb, Gasquet, Hidden Valley Lake, Knobcone Camp,
Legget, Potter Valley, Redwood Valley, Hopland, Upper Lake,
Middletown, Gravelly Valley Airport, Laytonville, and Clearlake
1046 PM PDT Tue Aug 4 2026

...HEAT ADVISORY WILL EXPIRE AT 11 PM PDT THIS EVENING...

$$

CAZ105-106-051400-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260807T0600Z/
Northeastern Interior Humboldt-Southeastern Interior Humboldt-
Including Garberville, Dinsmore, Weitchpec, Bull Creek, Alderpoint,
Shively, Hoopa, Orleans, Bridgeville, Pepperwood, Kneeland, Willow
Creek, and Benbow
1046 PM PDT Tue Aug 4 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THURSDAY...

* WHAT...Temperatures of 105 to 110 will produce moderate to major
  heat risk.

* WHERE...Humboldt Interior.

* WHEN...Until 11 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ108-116-117-051400-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260807T0600Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Junction City, Douglas City, Hayfork, Del Loma, Carrville,
Big Bar, Zenia, Helena, Weaverville, Forest Glen, Trinity Center,
Ruth, Peanut, and Hyampom
1046 PM PDT Tue Aug 4 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THURSDAY...

* WHAT...Temperatures of 105 to 110 will produce moderate to major
  heat risk.

* WHERE...Trinity County.

* WHEN...Until 11 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

EYS


Action: Expired
Issued At: 2026-08-05 00:47:07

353 
WWUS76 KEKA 050546
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
1046 PM PDT Tue Aug 4 2026

CAZ102-110-111-113-114-118>120-050700-
/O.EXP.KEKA.HT.Y.0003.000000T0000Z-260805T0600Z/
Interior Del Norte-Northwestern Interior Mendocino-Northeastern
Interior Mendocino-Southeastern Interior Mendocino-Northern Lake-
Western Lake-Southwestern Lake-Eastern Lake-
Including Clearlake Park, Ukiah, Calpella, Lakeport, Willits, Covelo,
Talmage, Finley, Cobb, Gasquet, Hidden Valley Lake, Knobcone Camp,
Legget, Potter Valley, Redwood Valley, Hopland, Upper Lake,
Middletown, Gravelly Valley Airport, Laytonville, and Clearlake
1046 PM PDT Tue Aug 4 2026

...HEAT ADVISORY WILL EXPIRE AT 11 PM PDT THIS EVENING...

$$

CAZ105-106-051400-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260807T0600Z/
Northeastern Interior Humboldt-Southeastern Interior Humboldt-
Including Garberville, Dinsmore, Weitchpec, Bull Creek, Alderpoint,
Shively, Hoopa, Orleans, Bridgeville, Pepperwood, Kneeland, Willow
Creek, and Benbow
1046 PM PDT Tue Aug 4 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THURSDAY...

* WHAT...Temperatures of 105 to 110 will produce moderate to major
  heat risk.

* WHERE...Humboldt Interior.

* WHEN...Until 11 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ108-116-117-051400-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260807T0600Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Junction City, Douglas City, Hayfork, Del Loma, Carrville,
Big Bar, Zenia, Helena, Weaverville, Forest Glen, Trinity Center,
Ruth, Peanut, and Hyampom
1046 PM PDT Tue Aug 4 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THURSDAY...

* WHAT...Temperatures of 105 to 110 will produce moderate to major
  heat risk.

* WHERE...Trinity County.

* WHEN...Until 11 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

EYS


Action: Continued
Issued At: 2026-08-05 00:47:07

353 
WWUS76 KEKA 050546
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
1046 PM PDT Tue Aug 4 2026

CAZ102-110-111-113-114-118>120-050700-
/O.EXP.KEKA.HT.Y.0003.000000T0000Z-260805T0600Z/
Interior Del Norte-Northwestern Interior Mendocino-Northeastern
Interior Mendocino-Southeastern Interior Mendocino-Northern Lake-
Western Lake-Southwestern Lake-Eastern Lake-
Including Clearlake Park, Ukiah, Calpella, Lakeport, Willits, Covelo,
Talmage, Finley, Cobb, Gasquet, Hidden Valley Lake, Knobcone Camp,
Legget, Potter Valley, Redwood Valley, Hopland, Upper Lake,
Middletown, Gravelly Valley Airport, Laytonville, and Clearlake
1046 PM PDT Tue Aug 4 2026

...HEAT ADVISORY WILL EXPIRE AT 11 PM PDT THIS EVENING...

$$

CAZ105-106-051400-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260807T0600Z/
Northeastern Interior Humboldt-Southeastern Interior Humboldt-
Including Garberville, Dinsmore, Weitchpec, Bull Creek, Alderpoint,
Shively, Hoopa, Orleans, Bridgeville, Pepperwood, Kneeland, Willow
Creek, and Benbow
1046 PM PDT Tue Aug 4 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THURSDAY...

* WHAT...Temperatures of 105 to 110 will produce moderate to major
  heat risk.

* WHERE...Humboldt Interior.

* WHEN...Until 11 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ108-116-117-051400-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260807T0600Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Junction City, Douglas City, Hayfork, Del Loma, Carrville,
Big Bar, Zenia, Helena, Weaverville, Forest Glen, Trinity Center,
Ruth, Peanut, and Hyampom
1046 PM PDT Tue Aug 4 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THURSDAY...

* WHAT...Temperatures of 105 to 110 will produce moderate to major
  heat risk.

* WHERE...Trinity County.

* WHEN...Until 11 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

EYS


Action: Continued
Issued At: 2026-08-05 08:12:43

081 
WWUS76 KEKA 051312
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
612 AM PDT Wed Aug 5 2026

CAZ105-106-060600-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260807T0600Z/
Northeastern Interior Humboldt-Southeastern Interior Humboldt-
Including Alderpoint, Kneeland, Garberville, Willow Creek, Shively,
Weitchpec, Bull Creek, Pepperwood, Bridgeville, Orleans, Hoopa,
Benbow, and Dinsmore
612 AM PDT Wed Aug 5 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THURSDAY...

* WHAT...Temperatures of 100 to 110 will produce moderate to major
  heat risk.

* WHERE...Humboldt Interior.

* WHEN...Until 11 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ108-116-117-060600-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260807T0600Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Trinity Center, Hyampom, Forest Glen, Peanut, Hayfork,
Junction City, Ruth, Zenia, Del Loma, Douglas City, Big Bar, Helena,
Weaverville, and Carrville
612 AM PDT Wed Aug 5 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THURSDAY...

* WHAT...Temperatures of 100 to 110 will produce moderate to major
  heat risk.

* WHERE...Trinity County.

* WHEN...Until 11 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

JB


Action: Continued
Issued At: 2026-08-05 08:12:43

081 
WWUS76 KEKA 051312
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
612 AM PDT Wed Aug 5 2026

CAZ105-106-060600-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260807T0600Z/
Northeastern Interior Humboldt-Southeastern Interior Humboldt-
Including Alderpoint, Kneeland, Garberville, Willow Creek, Shively,
Weitchpec, Bull Creek, Pepperwood, Bridgeville, Orleans, Hoopa,
Benbow, and Dinsmore
612 AM PDT Wed Aug 5 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THURSDAY...

* WHAT...Temperatures of 100 to 110 will produce moderate to major
  heat risk.

* WHERE...Humboldt Interior.

* WHEN...Until 11 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ108-116-117-060600-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260807T0600Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Trinity Center, Hyampom, Forest Glen, Peanut, Hayfork,
Junction City, Ruth, Zenia, Del Loma, Douglas City, Big Bar, Helena,
Weaverville, and Carrville
612 AM PDT Wed Aug 5 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THURSDAY...

* WHAT...Temperatures of 100 to 110 will produce moderate to major
  heat risk.

* WHERE...Trinity County.

* WHEN...Until 11 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

JB


Action: Continued
Issued At: 2026-08-06 00:13:45

975 
WWUS76 KEKA 060513
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
1013 PM PDT Wed Aug 5 2026

CAZ105-106-061315-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260807T0600Z/
Northeastern Interior Humboldt-Southeastern Interior Humboldt-
Including Hoopa, Alderpoint, Benbow, Weitchpec, Willow Creek,
Dinsmore, Garberville, Pepperwood, Bridgeville, Shively, Orleans,
Kneeland, and Bull Creek
1013 PM PDT Wed Aug 5 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THURSDAY...

* WHAT...Temperatures of 100 to 110 will produce moderate to major
  heat risk.

* WHERE...Humboldt Interior.

* WHEN...Until 11 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ108-116-117-061315-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260807T0600Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Hayfork, Hyampom, Trinity Center, Junction City, Carrville,
Big Bar, Peanut, Douglas City, Weaverville, Zenia, Forest Glen, Del
Loma, Helena, and Ruth
1013 PM PDT Wed Aug 5 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THURSDAY...

* WHAT...Temperatures of 100 to 110 will produce moderate to major
  heat risk.

* WHERE...Trinity County.

* WHEN...Until 11 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

EYS


Action: Continued
Issued At: 2026-08-06 00:13:45

975 
WWUS76 KEKA 060513
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
1013 PM PDT Wed Aug 5 2026

CAZ105-106-061315-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260807T0600Z/
Northeastern Interior Humboldt-Southeastern Interior Humboldt-
Including Hoopa, Alderpoint, Benbow, Weitchpec, Willow Creek,
Dinsmore, Garberville, Pepperwood, Bridgeville, Shively, Orleans,
Kneeland, and Bull Creek
1013 PM PDT Wed Aug 5 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THURSDAY...

* WHAT...Temperatures of 100 to 110 will produce moderate to major
  heat risk.

* WHERE...Humboldt Interior.

* WHEN...Until 11 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ108-116-117-061315-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260807T0600Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Hayfork, Hyampom, Trinity Center, Junction City, Carrville,
Big Bar, Peanut, Douglas City, Weaverville, Zenia, Forest Glen, Del
Loma, Helena, and Ruth
1013 PM PDT Wed Aug 5 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THURSDAY...

* WHAT...Temperatures of 100 to 110 will produce moderate to major
  heat risk.

* WHERE...Trinity County.

* WHEN...Until 11 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

EYS


Action: Time Extended
Issued At: 2026-08-06 02:52:49

486 
WWUS76 KEKA 060752
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
1252 AM PDT Thu Aug 6 2026

CAZ110-111-113-114-118>120-061700-
/O.NEW.KEKA.HT.Y.0004.260807T1800Z-260808T0600Z/
Northwestern Interior Mendocino-Northeastern Interior Mendocino-
Southeastern Interior Mendocino-Northern Lake-Western Lake-
Southwestern Lake-Eastern Lake-
Including Upper Lake, Finley, Calpella, Lakeport, Ukiah, Clearlake,
Laytonville, Gravelly Valley Airport, Middletown, Hopland, Potter
Valley, Willits, Talmage, Hidden Valley Lake, Covelo, Clearlake Park,
Legget, Knobcone Camp, Redwood Valley, and Cobb
1252 AM PDT Thu Aug 6 2026

...HEAT ADVISORY IN EFFECT FROM 11 AM TO 11 PM PDT FRIDAY...

* WHAT...Temperatures of 100 to 105 will produce moderate to major
  heat risk.

* WHERE...Northern Mendocino Interior, Lake County, and Southeastern
  Interior Mendocino.

* WHEN...From 11 AM to 11 PM PDT Friday.

* IMPACTS...Hot temperatures may cause heat illnesses.

* ADDITIONAL DETAILS...Hot temperatures are expected to continue into
  the weekend.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ108-116-117-061700-
/O.EXT.KEKA.HT.Y.0003.000000T0000Z-260808T0600Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Big Bar, Carrville, Hayfork, Peanut, Forest Glen, Junction
City, Zenia, Douglas City, Weaverville, Trinity Center, Ruth, Helena,
Hyampom, and Del Loma
1252 AM PDT Thu Aug 6 2026

...HEAT ADVISORY NOW IN EFFECT UNTIL 11 PM PDT FRIDAY...

* WHAT...Temperatures of 100 to 110 will produce moderate to major
  heat risk.

* WHERE...Trinity County.

* WHEN...Until 11 PM PDT Friday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ105-106-061700-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260807T0600Z/
Northeastern Interior Humboldt-Southeastern Interior Humboldt-
Including Kneeland, Benbow, Weitchpec, Shively, Alderpoint, Bull
Creek, Willow Creek, Hoopa, Pepperwood, Garberville, Orleans,
Bridgeville, and Dinsmore
1252 AM PDT Thu Aug 6 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING...

* WHAT...Temperatures of 100 to 105 will produce moderate to major
  heat risk.

* WHERE...Humboldt Interior.

* WHEN...Until 11 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

MKK


Action: Continued
Issued At: 2026-08-06 02:52:49

486 
WWUS76 KEKA 060752
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
1252 AM PDT Thu Aug 6 2026

CAZ110-111-113-114-118>120-061700-
/O.NEW.KEKA.HT.Y.0004.260807T1800Z-260808T0600Z/
Northwestern Interior Mendocino-Northeastern Interior Mendocino-
Southeastern Interior Mendocino-Northern Lake-Western Lake-
Southwestern Lake-Eastern Lake-
Including Upper Lake, Finley, Calpella, Lakeport, Ukiah, Clearlake,
Laytonville, Gravelly Valley Airport, Middletown, Hopland, Potter
Valley, Willits, Talmage, Hidden Valley Lake, Covelo, Clearlake Park,
Legget, Knobcone Camp, Redwood Valley, and Cobb
1252 AM PDT Thu Aug 6 2026

...HEAT ADVISORY IN EFFECT FROM 11 AM TO 11 PM PDT FRIDAY...

* WHAT...Temperatures of 100 to 105 will produce moderate to major
  heat risk.

* WHERE...Northern Mendocino Interior, Lake County, and Southeastern
  Interior Mendocino.

* WHEN...From 11 AM to 11 PM PDT Friday.

* IMPACTS...Hot temperatures may cause heat illnesses.

* ADDITIONAL DETAILS...Hot temperatures are expected to continue into
  the weekend.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ108-116-117-061700-
/O.EXT.KEKA.HT.Y.0003.000000T0000Z-260808T0600Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Big Bar, Carrville, Hayfork, Peanut, Forest Glen, Junction
City, Zenia, Douglas City, Weaverville, Trinity Center, Ruth, Helena,
Hyampom, and Del Loma
1252 AM PDT Thu Aug 6 2026

...HEAT ADVISORY NOW IN EFFECT UNTIL 11 PM PDT FRIDAY...

* WHAT...Temperatures of 100 to 110 will produce moderate to major
  heat risk.

* WHERE...Trinity County.

* WHEN...Until 11 PM PDT Friday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ105-106-061700-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260807T0600Z/
Northeastern Interior Humboldt-Southeastern Interior Humboldt-
Including Kneeland, Benbow, Weitchpec, Shively, Alderpoint, Bull
Creek, Willow Creek, Hoopa, Pepperwood, Garberville, Orleans,
Bridgeville, and Dinsmore
1252 AM PDT Thu Aug 6 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING...

* WHAT...Temperatures of 100 to 105 will produce moderate to major
  heat risk.

* WHERE...Humboldt Interior.

* WHEN...Until 11 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

MKK


Action: Time Extended
Issued At: 2026-08-06 14:36:59

664 
WWUS76 KEKA 061936
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
1236 PM PDT Thu Aug 6 2026

CAZ112-070345-
/O.NEW.KEKA.HT.Y.0005.260808T1700Z-260810T0500Z/
Southwestern Interior Mendocino-
Including Boonville, Philo, Yorkville, and Comptche
1236 PM PDT Thu Aug 6 2026

...HEAT ADVISORY IN EFFECT FROM 10 AM SATURDAY TO 10 PM PDT SUNDAY...

* WHAT...Temperatures of 90 to 101 will produce moderate HeatRisk.

* WHERE...Southwestern Interior Mendocino.

* WHEN...From 10 AM Saturday to 10 PM PDT Sunday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ108-116-117-070345-
/O.EXT.KEKA.HT.Y.0003.000000T0000Z-260810T0500Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Helena, Hayfork, Big Bar, Junction City, Carrville,
Weaverville, Ruth, Del Loma, Trinity Center, Hyampom, Peanut, Zenia,
Forest Glen, and Douglas City
1236 PM PDT Thu Aug 6 2026

...HEAT ADVISORY NOW IN EFFECT UNTIL 10 PM PDT SUNDAY...

* WHAT...Temperatures of 100 to 110 will produce moderate to major
  HeatRisk.

* WHERE...Trinity County.

* WHEN...Until 10 PM PDT Sunday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ110-111-113-114-118>120-070345-
/O.EXT.KEKA.HT.Y.0004.260807T1800Z-260810T0500Z/
Northwestern Interior Mendocino-Northeastern Interior Mendocino-
Southeastern Interior Mendocino-Northern Lake-Western Lake-
Southwestern Lake-Eastern Lake-
Including Upper Lake, Clearlake, Covelo, Ukiah, Hopland, Clearlake
Park, Potter Valley, Calpella, Lakeport, Cobb, Hidden Valley Lake,
Legget, Laytonville, Gravelly Valley Airport, Redwood Valley, Finley,
Middletown, Willits, Talmage, and Knobcone Camp
1236 PM PDT Thu Aug 6 2026

...HEAT ADVISORY NOW IN EFFECT FROM 11 AM FRIDAY TO 10 PM PDT
SUNDAY...

* WHAT...Temperatures of 100 to 110 will produce moderate to major
  HeatRisk.

* WHERE...Northern Mendocino Interior, Lake County, and Southeastern
  Interior Mendocino.

* WHEN...From 11 AM Friday to 10 PM PDT Sunday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ105-106-070345-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260807T0600Z/
Northeastern Interior Humboldt-Southeastern Interior Humboldt-
Including Benbow, Kneeland, Garberville, Orleans, Bridgeville,
Dinsmore, Willow Creek, Hoopa, Shively, Bull Creek, Pepperwood,
Alderpoint, and Weitchpec
1236 PM PDT Thu Aug 6 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING...

* WHAT...Temperatures of 100 to 110 will produce moderate to major
  HeatRisk.

* WHERE...Humboldt Interior.

* WHEN...Until 11 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

RPA


Action: Continued
Issued At: 2026-08-06 14:36:59

664 
WWUS76 KEKA 061936
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
1236 PM PDT Thu Aug 6 2026

CAZ112-070345-
/O.NEW.KEKA.HT.Y.0005.260808T1700Z-260810T0500Z/
Southwestern Interior Mendocino-
Including Boonville, Philo, Yorkville, and Comptche
1236 PM PDT Thu Aug 6 2026

...HEAT ADVISORY IN EFFECT FROM 10 AM SATURDAY TO 10 PM PDT SUNDAY...

* WHAT...Temperatures of 90 to 101 will produce moderate HeatRisk.

* WHERE...Southwestern Interior Mendocino.

* WHEN...From 10 AM Saturday to 10 PM PDT Sunday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ108-116-117-070345-
/O.EXT.KEKA.HT.Y.0003.000000T0000Z-260810T0500Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Helena, Hayfork, Big Bar, Junction City, Carrville,
Weaverville, Ruth, Del Loma, Trinity Center, Hyampom, Peanut, Zenia,
Forest Glen, and Douglas City
1236 PM PDT Thu Aug 6 2026

...HEAT ADVISORY NOW IN EFFECT UNTIL 10 PM PDT SUNDAY...

* WHAT...Temperatures of 100 to 110 will produce moderate to major
  HeatRisk.

* WHERE...Trinity County.

* WHEN...Until 10 PM PDT Sunday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ110-111-113-114-118>120-070345-
/O.EXT.KEKA.HT.Y.0004.260807T1800Z-260810T0500Z/
Northwestern Interior Mendocino-Northeastern Interior Mendocino-
Southeastern Interior Mendocino-Northern Lake-Western Lake-
Southwestern Lake-Eastern Lake-
Including Upper Lake, Clearlake, Covelo, Ukiah, Hopland, Clearlake
Park, Potter Valley, Calpella, Lakeport, Cobb, Hidden Valley Lake,
Legget, Laytonville, Gravelly Valley Airport, Redwood Valley, Finley,
Middletown, Willits, Talmage, and Knobcone Camp
1236 PM PDT Thu Aug 6 2026

...HEAT ADVISORY NOW IN EFFECT FROM 11 AM FRIDAY TO 10 PM PDT
SUNDAY...

* WHAT...Temperatures of 100 to 110 will produce moderate to major
  HeatRisk.

* WHERE...Northern Mendocino Interior, Lake County, and Southeastern
  Interior Mendocino.

* WHEN...From 11 AM Friday to 10 PM PDT Sunday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ105-106-070345-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260807T0600Z/
Northeastern Interior Humboldt-Southeastern Interior Humboldt-
Including Benbow, Kneeland, Garberville, Orleans, Bridgeville,
Dinsmore, Willow Creek, Hoopa, Shively, Bull Creek, Pepperwood,
Alderpoint, and Weitchpec
1236 PM PDT Thu Aug 6 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING...

* WHAT...Temperatures of 100 to 110 will produce moderate to major
  HeatRisk.

* WHERE...Humboldt Interior.

* WHEN...Until 11 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

RPA


Action: Continued
Issued At: 2026-08-06 22:20:46

401 
WWUS76 KEKA 070320
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
820 PM PDT Thu Aug 6 2026

CAZ105-106-070600-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260807T0600Z/
Northeastern Interior Humboldt-Southeastern Interior Humboldt-
Including Dinsmore, Orleans, Bull Creek, Willow Creek, Weitchpec,
Bridgeville, Kneeland, Hoopa, Pepperwood, Garberville, Shively,
Benbow, and Alderpoint
820 PM PDT Thu Aug 6 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING...

* WHAT...Temperatures of 100 to 110 will produce moderate to major
  HeatRisk.

* WHERE...Humboldt Interior.

* WHEN...Until 11 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ108-116-117-071130-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260810T0500Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Helena, Trinity Center, Weaverville, Del Loma, Forest Glen,
Douglas City, Zenia, Junction City, Hyampom, Big Bar, Ruth, Peanut,
Carrville, and Hayfork
820 PM PDT Thu Aug 6 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT SUNDAY...

* WHAT...Temperatures of 100 to 110 will produce moderate to major
  HeatRisk.

* WHERE...Humboldt Interior.

* WHEN...Until 10 PM PDT Sunday.

* IMPACTS...Hot temperatures may cause heat illnesses.

* ADDITIONAL DETAILS...Hot temperatures are expected to continue into
  the weekend. Saturday will be the peak day for HeatRisk!

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ110-111-113-114-118>120-071130-
/O.CON.KEKA.HT.Y.0004.260807T1800Z-260810T0500Z/
Northwestern Interior Mendocino-Northeastern Interior Mendocino-
Southeastern Interior Mendocino-Northern Lake-Western Lake-
Southwestern Lake-Eastern Lake-
Including Clearlake Park, Laytonville, Talmage, Covelo, Ukiah, Upper
Lake, Willits, Hopland, Redwood Valley, Cobb, Knobcone Camp, Potter
Valley, Finley, Calpella, Hidden Valley Lake, Legget, Gravelly Valley
Airport, Clearlake, Lakeport, and Middletown
820 PM PDT Thu Aug 6 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM FRIDAY TO 10 PM PDT
SUNDAY...

* WHAT...Temperatures of 100 to 110 will produce moderate to major
  HeatRisk.

* WHERE...Northern Mendocino Interior, Lake County, and Southeastern
  Interior Mendocino.

* WHEN...From 11 AM Friday to 10 PM PDT Sunday.

* IMPACTS...Hot temperatures may cause heat illnesses.

* ADDITIONAL DETAILS...Hot temperatures are expected to continue into
  the weekend. Saturday will be the peak day for HeatRisk!

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ112-071130-
/O.CON.KEKA.HT.Y.0005.260808T1700Z-260810T0500Z/
Southwestern Interior Mendocino-
Including Yorkville, Philo, Comptche, and Boonville
820 PM PDT Thu Aug 6 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM SATURDAY TO 10 PM PDT
SUNDAY...

* WHAT...Temperatures of 90 to 101 will produce moderate HeatRisk.

* WHERE...Southwestern Interior Mendocino.

* WHEN...From 10 AM Saturday to 10 PM PDT Sunday.

* IMPACTS...Hot temperatures may cause heat illnesses.

* ADDITIONAL DETAILS...Hot temperatures are expected to continue into
  the weekend. Saturday will be the peak day for HeatRisk!

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

EYS


Action: Continued
Issued At: 2026-08-06 22:20:46

401 
WWUS76 KEKA 070320
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
820 PM PDT Thu Aug 6 2026

CAZ105-106-070600-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260807T0600Z/
Northeastern Interior Humboldt-Southeastern Interior Humboldt-
Including Dinsmore, Orleans, Bull Creek, Willow Creek, Weitchpec,
Bridgeville, Kneeland, Hoopa, Pepperwood, Garberville, Shively,
Benbow, and Alderpoint
820 PM PDT Thu Aug 6 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING...

* WHAT...Temperatures of 100 to 110 will produce moderate to major
  HeatRisk.

* WHERE...Humboldt Interior.

* WHEN...Until 11 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ108-116-117-071130-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260810T0500Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Helena, Trinity Center, Weaverville, Del Loma, Forest Glen,
Douglas City, Zenia, Junction City, Hyampom, Big Bar, Ruth, Peanut,
Carrville, and Hayfork
820 PM PDT Thu Aug 6 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT SUNDAY...

* WHAT...Temperatures of 100 to 110 will produce moderate to major
  HeatRisk.

* WHERE...Humboldt Interior.

* WHEN...Until 10 PM PDT Sunday.

* IMPACTS...Hot temperatures may cause heat illnesses.

* ADDITIONAL DETAILS...Hot temperatures are expected to continue into
  the weekend. Saturday will be the peak day for HeatRisk!

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ110-111-113-114-118>120-071130-
/O.CON.KEKA.HT.Y.0004.260807T1800Z-260810T0500Z/
Northwestern Interior Mendocino-Northeastern Interior Mendocino-
Southeastern Interior Mendocino-Northern Lake-Western Lake-
Southwestern Lake-Eastern Lake-
Including Clearlake Park, Laytonville, Talmage, Covelo, Ukiah, Upper
Lake, Willits, Hopland, Redwood Valley, Cobb, Knobcone Camp, Potter
Valley, Finley, Calpella, Hidden Valley Lake, Legget, Gravelly Valley
Airport, Clearlake, Lakeport, and Middletown
820 PM PDT Thu Aug 6 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM FRIDAY TO 10 PM PDT
SUNDAY...

* WHAT...Temperatures of 100 to 110 will produce moderate to major
  HeatRisk.

* WHERE...Northern Mendocino Interior, Lake County, and Southeastern
  Interior Mendocino.

* WHEN...From 11 AM Friday to 10 PM PDT Sunday.

* IMPACTS...Hot temperatures may cause heat illnesses.

* ADDITIONAL DETAILS...Hot temperatures are expected to continue into
  the weekend. Saturday will be the peak day for HeatRisk!

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ112-071130-
/O.CON.KEKA.HT.Y.0005.260808T1700Z-260810T0500Z/
Southwestern Interior Mendocino-
Including Yorkville, Philo, Comptche, and Boonville
820 PM PDT Thu Aug 6 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM SATURDAY TO 10 PM PDT
SUNDAY...

* WHAT...Temperatures of 90 to 101 will produce moderate HeatRisk.

* WHERE...Southwestern Interior Mendocino.

* WHEN...From 10 AM Saturday to 10 PM PDT Sunday.

* IMPACTS...Hot temperatures may cause heat illnesses.

* ADDITIONAL DETAILS...Hot temperatures are expected to continue into
  the weekend. Saturday will be the peak day for HeatRisk!

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

EYS


Action: Continued
Issued At: 2026-08-07 00:51:20

938 
WWUS76 KEKA 070551
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
1051 PM PDT Thu Aug 6 2026

CAZ105-106-070700-
/O.EXP.KEKA.HT.Y.0003.000000T0000Z-260807T0600Z/
Northeastern Interior Humboldt-Southeastern Interior Humboldt-
Including Alderpoint, Benbow, Weitchpec, Pepperwood, Willow Creek,
Bridgeville, Dinsmore, Garberville, Bull Creek, Hoopa, Kneeland,
Shively, and Orleans
1051 PM PDT Thu Aug 6 2026

...HEAT ADVISORY WILL EXPIRE AT 11 PM PDT THIS EVENING...

$$

CAZ108-116-117-071400-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260810T0500Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Del Loma, Zenia, Helena, Carrville, Junction City, Douglas
City, Hayfork, Hyampom, Trinity Center, Weaverville, Big Bar, Ruth,
Forest Glen, and Peanut
1051 PM PDT Thu Aug 6 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT SUNDAY...

* WHAT...Temperatures of 100 to 110 will produce moderate to major
  HeatRisk.

* WHERE...Trinity County.

* WHEN...Until 10 PM PDT Sunday.

* IMPACTS...Hot temperatures may cause heat illnesses.

* ADDITIONAL DETAILS...Hot temperatures are expected to continue into
  the weekend. Saturday will be the peak day for HeatRisk!

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ110-111-113-114-118>120-071400-
/O.CON.KEKA.HT.Y.0004.260807T1800Z-260810T0500Z/
Northwestern Interior Mendocino-Northeastern Interior Mendocino-
Southeastern Interior Mendocino-Northern Lake-Western Lake-
Southwestern Lake-Eastern Lake-
Including Hopland, Lakeport, Hidden Valley Lake, Willits, Gravelly
Valley Airport, Finley, Potter Valley, Legget, Talmage, Ukiah,
Calpella, Knobcone Camp, Middletown, Clearlake, Laytonville,
Clearlake Park, Redwood Valley, Cobb, Upper Lake, and Covelo
1051 PM PDT Thu Aug 6 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM FRIDAY TO 10 PM PDT
SUNDAY...

* WHAT...Temperatures of 100 to 110 will produce moderate to major
  HeatRisk.

* WHERE...Northern Mendocino Interior, Lake County, and Southeastern
  Interior Mendocino.

* WHEN...From 11 AM Friday to 10 PM PDT Sunday.

* IMPACTS...Hot temperatures may cause heat illnesses.

* ADDITIONAL DETAILS...Hot temperatures are expected to continue into
  the weekend. Saturday will be the peak day for HeatRisk!

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ112-071400-
/O.CON.KEKA.HT.Y.0005.260808T1700Z-260810T0500Z/
Southwestern Interior Mendocino-
Including Comptche, Philo, Yorkville, and Boonville
1051 PM PDT Thu Aug 6 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM SATURDAY TO 10 PM PDT
SUNDAY...

* WHAT...Temperatures of 90 to 101 will produce moderate HeatRisk.

* WHERE...Southwestern Interior Mendocino.

* WHEN...From 10 AM Saturday to 10 PM PDT Sunday.

* IMPACTS...Hot temperatures may cause heat illnesses.

* ADDITIONAL DETAILS...Hot temperatures are expected to continue into
  the weekend. Saturday will be the peak day for HeatRisk!

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

MKK


Action: Expired
Issued At: 2026-08-07 00:51:20

938 
WWUS76 KEKA 070551
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
1051 PM PDT Thu Aug 6 2026

CAZ105-106-070700-
/O.EXP.KEKA.HT.Y.0003.000000T0000Z-260807T0600Z/
Northeastern Interior Humboldt-Southeastern Interior Humboldt-
Including Alderpoint, Benbow, Weitchpec, Pepperwood, Willow Creek,
Bridgeville, Dinsmore, Garberville, Bull Creek, Hoopa, Kneeland,
Shively, and Orleans
1051 PM PDT Thu Aug 6 2026

...HEAT ADVISORY WILL EXPIRE AT 11 PM PDT THIS EVENING...

$$

CAZ108-116-117-071400-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260810T0500Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Del Loma, Zenia, Helena, Carrville, Junction City, Douglas
City, Hayfork, Hyampom, Trinity Center, Weaverville, Big Bar, Ruth,
Forest Glen, and Peanut
1051 PM PDT Thu Aug 6 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT SUNDAY...

* WHAT...Temperatures of 100 to 110 will produce moderate to major
  HeatRisk.

* WHERE...Trinity County.

* WHEN...Until 10 PM PDT Sunday.

* IMPACTS...Hot temperatures may cause heat illnesses.

* ADDITIONAL DETAILS...Hot temperatures are expected to continue into
  the weekend. Saturday will be the peak day for HeatRisk!

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ110-111-113-114-118>120-071400-
/O.CON.KEKA.HT.Y.0004.260807T1800Z-260810T0500Z/
Northwestern Interior Mendocino-Northeastern Interior Mendocino-
Southeastern Interior Mendocino-Northern Lake-Western Lake-
Southwestern Lake-Eastern Lake-
Including Hopland, Lakeport, Hidden Valley Lake, Willits, Gravelly
Valley Airport, Finley, Potter Valley, Legget, Talmage, Ukiah,
Calpella, Knobcone Camp, Middletown, Clearlake, Laytonville,
Clearlake Park, Redwood Valley, Cobb, Upper Lake, and Covelo
1051 PM PDT Thu Aug 6 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM FRIDAY TO 10 PM PDT
SUNDAY...

* WHAT...Temperatures of 100 to 110 will produce moderate to major
  HeatRisk.

* WHERE...Northern Mendocino Interior, Lake County, and Southeastern
  Interior Mendocino.

* WHEN...From 11 AM Friday to 10 PM PDT Sunday.

* IMPACTS...Hot temperatures may cause heat illnesses.

* ADDITIONAL DETAILS...Hot temperatures are expected to continue into
  the weekend. Saturday will be the peak day for HeatRisk!

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ112-071400-
/O.CON.KEKA.HT.Y.0005.260808T1700Z-260810T0500Z/
Southwestern Interior Mendocino-
Including Comptche, Philo, Yorkville, and Boonville
1051 PM PDT Thu Aug 6 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM SATURDAY TO 10 PM PDT
SUNDAY...

* WHAT...Temperatures of 90 to 101 will produce moderate HeatRisk.

* WHERE...Southwestern Interior Mendocino.

* WHEN...From 10 AM Saturday to 10 PM PDT Sunday.

* IMPACTS...Hot temperatures may cause heat illnesses.

* ADDITIONAL DETAILS...Hot temperatures are expected to continue into
  the weekend. Saturday will be the peak day for HeatRisk!

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

MKK


Action: Continued
Issued At: 2026-08-07 08:32:12

493 
WWUS76 KEKA 071331
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
631 AM PDT Fri Aug 7 2026

CAZ108-116-117-072145-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260810T0500Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Del Loma, Zenia, Helena, Carrville, Junction City, Douglas
City, Hayfork, Hyampom, Trinity Center, Weaverville, Big Bar, Ruth,
Forest Glen, and Peanut
631 AM PDT Fri Aug 7 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT SUNDAY...

* WHAT...Temperatures of 100 to 110 will produce moderate to major
  HeatRisk.

* WHERE...Trinity County.

* WHEN...Until 10 PM PDT Sunday.

* IMPACTS...Hot temperatures may cause heat illnesses.

* ADDITIONAL DETAILS...Hot temperatures are expected to continue into
  the weekend. Saturday will be the peak day for HeatRisk!

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ110-111-113-114-118>120-072145-
/O.CON.KEKA.HT.Y.0004.260807T1800Z-260810T0500Z/
Northwestern Interior Mendocino-Northeastern Interior Mendocino-
Southeastern Interior Mendocino-Northern Lake-Western Lake-
Southwestern Lake-Eastern Lake-
Including Hopland, Lakeport, Hidden Valley Lake, Willits, Gravelly
Valley Airport, Finley, Potter Valley, Legget, Talmage, Ukiah,
Calpella, Knobcone Camp, Middletown, Clearlake, Laytonville,
Clearlake Park, Redwood Valley, Cobb, Upper Lake, and Covelo
631 AM PDT Fri Aug 7 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 10 PM
PDT SUNDAY...

* WHAT...Temperatures of 100 to 110 will produce moderate to major
  HeatRisk.

* WHERE...Northern Mendocino Interior, Lake County, and Southeastern
  Interior Mendocino.

* WHEN...From 11 AM this morning to 10 PM PDT Sunday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ112-072145-
/O.CON.KEKA.HT.Y.0005.260808T1700Z-260810T0500Z/
Southwestern Interior Mendocino-
Including Comptche, Philo, Yorkville, and Boonville
631 AM PDT Fri Aug 7 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM SATURDAY TO 10 PM PDT
SUNDAY...

* WHAT...Temperatures of 90 to 101 will produce moderate HeatRisk.

* WHERE...Southwestern Interior Mendocino.

* WHEN...From 10 AM Saturday to 10 PM PDT Sunday.

* IMPACTS...Hot temperatures may cause heat illnesses.

* ADDITIONAL DETAILS...Hot temperatures are expected to continue into
  the weekend. Saturday will be the peak day for HeatRisk!

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

MKK


Action: Continued
Issued At: 2026-08-07 19:01:03

411 
WWUS76 KEKA 080000
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
500 PM PDT Fri Aug 7 2026

CAZ108-116-117-080800-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260810T0500Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Douglas City, Weaverville, Hyampom, Hayfork, Ruth, Peanut,
Zenia, Big Bar, Helena, Junction City, Trinity Center, Del Loma,
Carrville, and Forest Glen
500 PM PDT Fri Aug 7 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT SUNDAY...

* WHAT...Temperatures of 100 to 110 will produce moderate to major
  HeatRisk.

* WHERE...Trinity County.

* WHEN...Until 10 PM PDT Sunday.

* IMPACTS...Hot temperatures may cause heat illnesses.

* ADDITIONAL DETAILS...Hot temperatures are expected to continue into
  the weekend. Saturday will be the peak day for HeatRisk!

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ110-111-113-114-118>120-080800-
/O.CON.KEKA.HT.Y.0004.000000T0000Z-260810T0500Z/
Northwestern Interior Mendocino-Northeastern Interior Mendocino-
Southeastern Interior Mendocino-Northern Lake-Western Lake-
Southwestern Lake-Eastern Lake-
Including Knobcone Camp, Legget, Hopland, Talmage, Hidden Valley
Lake, Ukiah, Willits, Middletown, Clearlake, Clearlake Park, Finley,
Calpella, Cobb, Potter Valley, Gravelly Valley Airport, Laytonville,
Redwood Valley, Upper Lake, Lakeport, and Covelo
500 PM PDT Fri Aug 7 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT SUNDAY...

* WHAT...Temperatures of 100 to 110 will produce moderate to major
  HeatRisk.

* WHERE...Northern Mendocino Interior, Lake County, and Southeastern
  Interior Mendocino.

* WHEN...Until 10 PM PDT Sunday.

* IMPACTS...Hot temperatures may cause heat illnesses.

* ADDITIONAL DETAILS...Hot temperatures are expected to continue into
  the weekend. Saturday will be the peak day for HeatRisk!

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ112-080800-
/O.CON.KEKA.HT.Y.0005.260808T1700Z-260810T0500Z/
Southwestern Interior Mendocino-
Including Philo, Comptche, Yorkville, and Boonville
500 PM PDT Fri Aug 7 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM SATURDAY TO 10 PM PDT
SUNDAY...

* WHAT...Temperatures of 90 to 101 will produce moderate HeatRisk.

* WHERE...Southwestern Interior Mendocino.

* WHEN...From 10 AM Saturday to 10 PM PDT Sunday.

* IMPACTS...Hot temperatures may cause heat illnesses.

* ADDITIONAL DETAILS...Hot temperatures are expected to continue into
  the weekend. Saturday will be the peak day for HeatRisk!

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

EYS


Action: Time and Area Extended
Issued At: 2026-08-08 02:23:58

137 
WWUS76 KEKA 080723
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
1223 AM PDT Sat Aug 8 2026

CAZ105-106-081530-
/O.EXB.KEKA.HT.Y.0003.260808T1800Z-260809T0600Z/
Northeastern Interior Humboldt-Southeastern Interior Humboldt-
Including Pepperwood, Bridgeville, Kneeland, Alderpoint, Garberville,
Orleans, Bull Creek, Benbow, Shively, Willow Creek, Dinsmore,
Weitchpec, and Hoopa
1223 AM PDT Sat Aug 8 2026

...HEAT ADVISORY IN EFFECT FROM 11 AM THIS MORNING TO 11 PM PDT THIS
EVENING...

* WHAT...Temperatures of 100 to 105 will produce moderate to major
  HeatRisk.

* WHERE...Humboldt Interior.

* WHEN...From 11 AM this morning to 11 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses.

* ADDITIONAL DETAILS...The warmest temperatures are expected to be in
  the eastern half of Humboldt county as well as southern Humboldt.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ108-116-117-081530-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260810T0500Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Peanut, Douglas City, Forest Glen, Big Bar, Carrville,
Hyampom, Trinity Center, Hayfork, Weaverville, Del Loma, Junction
City, Ruth, Helena, and Zenia
1223 AM PDT Sat Aug 8 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT SUNDAY...

* WHAT...Temperatures of 100 to 110 will produce moderate to major
  HeatRisk.

* WHERE...Trinity County.

* WHEN...Until 10 PM PDT Sunday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ110-111-113-114-118>120-081530-
/O.CON.KEKA.HT.Y.0004.000000T0000Z-260810T0500Z/
Northwestern Interior Mendocino-Northeastern Interior Mendocino-
Southeastern Interior Mendocino-Northern Lake-Western Lake-
Southwestern Lake-Eastern Lake-
Including Potter Valley, Hopland, Gravelly Valley Airport, Cobb,
Knobcone Camp, Willits, Lakeport, Laytonville, Upper Lake, Hidden
Valley Lake, Redwood Valley, Calpella, Covelo, Ukiah, Finley,
Middletown, Clearlake Park, Legget, Talmage, and Clearlake
1223 AM PDT Sat Aug 8 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT SUNDAY...

* WHAT...Temperatures of 100 to 110 will produce moderate to major
  HeatRisk.

* WHERE...Northern Mendocino Interior, Lake County, and Southeastern
  Interior Mendocino.

* WHEN...Until 10 PM PDT Sunday.

* IMPACTS...Hot temperatures may cause heat illnesses.

* ADDITIONAL DETAILS...Hot temperatures are expected to continue into
  the weekend. Saturday will be the peak day for HeatRisk!

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ112-081530-
/O.CON.KEKA.HT.Y.0005.260808T1700Z-260810T0500Z/
Southwestern Interior Mendocino-
Including Yorkville, Boonville, Philo, and Comptche
1223 AM PDT Sat Aug 8 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 10 PM
PDT SUNDAY...

* WHAT...Temperatures of 90 to 101 will produce moderate HeatRisk.

* WHERE...Southwestern Interior Mendocino.

* WHEN...From 10 AM this morning to 10 PM PDT Sunday.

* IMPACTS...Hot temperatures may cause heat illnesses.

* ADDITIONAL DETAILS...Hot temperatures are expected to continue into
  the weekend. Saturday will be the peak day for HeatRisk!

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

MKK


Action: Continued
Issued At: 2026-08-08 02:23:58

137 
WWUS76 KEKA 080723
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
1223 AM PDT Sat Aug 8 2026

CAZ105-106-081530-
/O.EXB.KEKA.HT.Y.0003.260808T1800Z-260809T0600Z/
Northeastern Interior Humboldt-Southeastern Interior Humboldt-
Including Pepperwood, Bridgeville, Kneeland, Alderpoint, Garberville,
Orleans, Bull Creek, Benbow, Shively, Willow Creek, Dinsmore,
Weitchpec, and Hoopa
1223 AM PDT Sat Aug 8 2026

...HEAT ADVISORY IN EFFECT FROM 11 AM THIS MORNING TO 11 PM PDT THIS
EVENING...

* WHAT...Temperatures of 100 to 105 will produce moderate to major
  HeatRisk.

* WHERE...Humboldt Interior.

* WHEN...From 11 AM this morning to 11 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses.

* ADDITIONAL DETAILS...The warmest temperatures are expected to be in
  the eastern half of Humboldt county as well as southern Humboldt.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ108-116-117-081530-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260810T0500Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Peanut, Douglas City, Forest Glen, Big Bar, Carrville,
Hyampom, Trinity Center, Hayfork, Weaverville, Del Loma, Junction
City, Ruth, Helena, and Zenia
1223 AM PDT Sat Aug 8 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT SUNDAY...

* WHAT...Temperatures of 100 to 110 will produce moderate to major
  HeatRisk.

* WHERE...Trinity County.

* WHEN...Until 10 PM PDT Sunday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ110-111-113-114-118>120-081530-
/O.CON.KEKA.HT.Y.0004.000000T0000Z-260810T0500Z/
Northwestern Interior Mendocino-Northeastern Interior Mendocino-
Southeastern Interior Mendocino-Northern Lake-Western Lake-
Southwestern Lake-Eastern Lake-
Including Potter Valley, Hopland, Gravelly Valley Airport, Cobb,
Knobcone Camp, Willits, Lakeport, Laytonville, Upper Lake, Hidden
Valley Lake, Redwood Valley, Calpella, Covelo, Ukiah, Finley,
Middletown, Clearlake Park, Legget, Talmage, and Clearlake
1223 AM PDT Sat Aug 8 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT SUNDAY...

* WHAT...Temperatures of 100 to 110 will produce moderate to major
  HeatRisk.

* WHERE...Northern Mendocino Interior, Lake County, and Southeastern
  Interior Mendocino.

* WHEN...Until 10 PM PDT Sunday.

* IMPACTS...Hot temperatures may cause heat illnesses.

* ADDITIONAL DETAILS...Hot temperatures are expected to continue into
  the weekend. Saturday will be the peak day for HeatRisk!

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ112-081530-
/O.CON.KEKA.HT.Y.0005.260808T1700Z-260810T0500Z/
Southwestern Interior Mendocino-
Including Yorkville, Boonville, Philo, and Comptche
1223 AM PDT Sat Aug 8 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 10 PM
PDT SUNDAY...

* WHAT...Temperatures of 90 to 101 will produce moderate HeatRisk.

* WHERE...Southwestern Interior Mendocino.

* WHEN...From 10 AM this morning to 10 PM PDT Sunday.

* IMPACTS...Hot temperatures may cause heat illnesses.

* ADDITIONAL DETAILS...Hot temperatures are expected to continue into
  the weekend. Saturday will be the peak day for HeatRisk!

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

MKK


Action: Cancelled
Issued At: 2026-08-08 23:33:39

180 
WWUS76 KEKA 090433
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
933 PM PDT Sat Aug 8 2026

CAZ105-106-090545-
/O.CAN.KEKA.HT.Y.0003.000000T0000Z-260809T0600Z/
Northeastern Interior Humboldt-Southeastern Interior Humboldt-
Including Willow Creek, Weitchpec, Benbow, Bridgeville, Bull Creek,
Kneeland, Shively, Hoopa, Dinsmore, Alderpoint, Garberville, Orleans,
and Pepperwood
933 PM PDT Sat Aug 8 2026

...HEAT ADVISORY IS CANCELLED...

Temperatures continue to decrease after sunset, and hence the heat
advisory is cancelled.

$$

CAZ108-116-117-091245-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260810T0500Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Hyampom, Big Bar, Hayfork, Douglas City, Weaverville,
Helena, Junction City, Del Loma, Peanut, Trinity Center, Ruth, Zenia,
Forest Glen, and Carrville
933 PM PDT Sat Aug 8 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT SUNDAY...

* WHAT...Temperatures of 100 to 110 will produce moderate to major
  HeatRisk on Sunday.

* WHERE...Trinity County.

* WHEN...Until 10 PM PDT Sunday.

* IMPACTS...Hot temperatures may cause heat illnesses.

* ADDITIONAL DETAILS...Hot temperatures are expected to continue into
  Sunday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ110-111-113-114-118>120-091245-
/O.CON.KEKA.HT.Y.0004.000000T0000Z-260810T0500Z/
Northwestern Interior Mendocino-Northeastern Interior Mendocino-
Southeastern Interior Mendocino-Northern Lake-Western Lake-
Southwestern Lake-Eastern Lake-
Including Cobb, Finley, Laytonville, Ukiah, Willits, Redwood Valley,
Legget, Gravelly Valley Airport, Upper Lake, Covelo, Middletown,
Lakeport, Knobcone Camp, Hopland, Potter Valley, Talmage, Clearlake,
Hidden Valley Lake, Calpella, and Clearlake Park
933 PM PDT Sat Aug 8 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT SUNDAY...

* WHAT...Temperatures of 100 to 110 will produce moderate to major
  HeatRisk on Sunday.

* WHERE...Northern Mendocino Interior, Lake County, and Southeastern
  Interior Mendocino.

* WHEN...Until 10 PM PDT Sunday.

* IMPACTS...Hot temperatures may cause heat illnesses.

* ADDITIONAL DETAILS...Hot temperatures are expected to continue into
  Sunday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ112-091245-
/O.CON.KEKA.HT.Y.0005.000000T0000Z-260810T0500Z/
Southwestern Interior Mendocino-
Including Philo, Comptche, Yorkville, and Boonville
933 PM PDT Sat Aug 8 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT SUNDAY...

* WHAT...Temperatures of 90 to 101 will produce moderate HeatRisk on
  Sunday.

* WHERE...Southwestern Interior Mendocino.

* WHEN...Until 10 PM PDT Sunday.

* IMPACTS...Hot temperatures may cause heat illnesses.

* ADDITIONAL DETAILS...Hot temperatures are expected to continue into
  Sunday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

MH


Action: Continued
Issued At: 2026-08-08 23:33:39

180 
WWUS76 KEKA 090433
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
933 PM PDT Sat Aug 8 2026

CAZ105-106-090545-
/O.CAN.KEKA.HT.Y.0003.000000T0000Z-260809T0600Z/
Northeastern Interior Humboldt-Southeastern Interior Humboldt-
Including Willow Creek, Weitchpec, Benbow, Bridgeville, Bull Creek,
Kneeland, Shively, Hoopa, Dinsmore, Alderpoint, Garberville, Orleans,
and Pepperwood
933 PM PDT Sat Aug 8 2026

...HEAT ADVISORY IS CANCELLED...

Temperatures continue to decrease after sunset, and hence the heat
advisory is cancelled.

$$

CAZ108-116-117-091245-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260810T0500Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Hyampom, Big Bar, Hayfork, Douglas City, Weaverville,
Helena, Junction City, Del Loma, Peanut, Trinity Center, Ruth, Zenia,
Forest Glen, and Carrville
933 PM PDT Sat Aug 8 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT SUNDAY...

* WHAT...Temperatures of 100 to 110 will produce moderate to major
  HeatRisk on Sunday.

* WHERE...Trinity County.

* WHEN...Until 10 PM PDT Sunday.

* IMPACTS...Hot temperatures may cause heat illnesses.

* ADDITIONAL DETAILS...Hot temperatures are expected to continue into
  Sunday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ110-111-113-114-118>120-091245-
/O.CON.KEKA.HT.Y.0004.000000T0000Z-260810T0500Z/
Northwestern Interior Mendocino-Northeastern Interior Mendocino-
Southeastern Interior Mendocino-Northern Lake-Western Lake-
Southwestern Lake-Eastern Lake-
Including Cobb, Finley, Laytonville, Ukiah, Willits, Redwood Valley,
Legget, Gravelly Valley Airport, Upper Lake, Covelo, Middletown,
Lakeport, Knobcone Camp, Hopland, Potter Valley, Talmage, Clearlake,
Hidden Valley Lake, Calpella, and Clearlake Park
933 PM PDT Sat Aug 8 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT SUNDAY...

* WHAT...Temperatures of 100 to 110 will produce moderate to major
  HeatRisk on Sunday.

* WHERE...Northern Mendocino Interior, Lake County, and Southeastern
  Interior Mendocino.

* WHEN...Until 10 PM PDT Sunday.

* IMPACTS...Hot temperatures may cause heat illnesses.

* ADDITIONAL DETAILS...Hot temperatures are expected to continue into
  Sunday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ112-091245-
/O.CON.KEKA.HT.Y.0005.000000T0000Z-260810T0500Z/
Southwestern Interior Mendocino-
Including Philo, Comptche, Yorkville, and Boonville
933 PM PDT Sat Aug 8 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT SUNDAY...

* WHAT...Temperatures of 90 to 101 will produce moderate HeatRisk on
  Sunday.

* WHERE...Southwestern Interior Mendocino.

* WHEN...Until 10 PM PDT Sunday.

* IMPACTS...Hot temperatures may cause heat illnesses.

* ADDITIONAL DETAILS...Hot temperatures are expected to continue into
  Sunday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

MH


Action: Continued
Issued At: 2026-08-09 07:18:10

833 
WWUS76 KEKA 091217
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
517 AM PDT Sun Aug 9 2026

CAZ108-116-117-092030-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260810T0500Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Del Loma, Weaverville, Ruth, Peanut, Zenia, Hyampom,
Helena, Forest Glen, Douglas City, Junction City, Hayfork, Big Bar,
Trinity Center, and Carrville
517 AM PDT Sun Aug 9 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT THIS EVENING...

* WHAT...Temperatures of 100 to 110 will produce moderate to major
  HeatRisk on Sunday.

* WHERE...Trinity County.

* WHEN...Until 10 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ110-111-113-114-118>120-092030-
/O.CON.KEKA.HT.Y.0004.000000T0000Z-260810T0500Z/
Northwestern Interior Mendocino-Northeastern Interior Mendocino-
Southeastern Interior Mendocino-Northern Lake-Western Lake-
Southwestern Lake-Eastern Lake-
Including Clearlake, Redwood Valley, Knobcone Camp, Laytonville,
Gravelly Valley Airport, Hopland, Covelo, Clearlake Park, Hidden
Valley Lake, Middletown, Legget, Calpella, Lakeport, Upper Lake,
Willits, Potter Valley, Ukiah, Finley, Talmage, and Cobb
517 AM PDT Sun Aug 9 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT THIS EVENING...

* WHAT...Temperatures of 100 to 110 will produce moderate to major
  HeatRisk on Sunday.

* WHERE...Northern Mendocino Interior, Lake County, and Southeastern
  Interior Mendocino.

* WHEN...Until 10 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ112-092030-
/O.CON.KEKA.HT.Y.0005.000000T0000Z-260810T0500Z/
Southwestern Interior Mendocino-
Including Philo, Comptche, Boonville, and Yorkville
517 AM PDT Sun Aug 9 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT THIS EVENING...

* WHAT...Temperatures of 90 to 101 will produce moderate HeatRisk on
  Sunday.

* WHERE...Southwestern Interior Mendocino.

* WHEN...Until 10 PM PDT this evening.

* IMPACTS...Hot temperatures and high humidity may cause heat
  illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

MKK


Action: Continued
Issued At: 2026-08-09 16:52:56

362 
WWUS76 KEKA 092152
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
252 PM PDT Sun Aug 9 2026

CAZ108-116-117-100500-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260810T0500Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Forest Glen, Del Loma, Douglas City, Weaverville, Big Bar,
Zenia, Hyampom, Helena, Hayfork, Carrville, Peanut, Ruth, Trinity
Center, and Junction City
252 PM PDT Sun Aug 9 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT THIS EVENING...

* WHAT...Temperatures of 100 to 110 will produce moderate to major
  HeatRisk on Sunday.

* WHERE...Humboldt Interior.

* WHEN...Until 10 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses.

* ADDITIONAL DETAILS...Hot temperatures are expected to continue into
  Sunday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ110-111-113-114-118>120-100500-
/O.CON.KEKA.HT.Y.0004.000000T0000Z-260810T0500Z/
Northwestern Interior Mendocino-Northeastern Interior Mendocino-
Southeastern Interior Mendocino-Northern Lake-Western Lake-
Southwestern Lake-Eastern Lake-
Including Laytonville, Redwood Valley, Finley, Gravelly Valley
Airport, Clearlake, Upper Lake, Calpella, Middletown, Hopland,
Talmage, Lakeport, Clearlake Park, Legget, Potter Valley, Ukiah,
Knobcone Camp, Hidden Valley Lake, Covelo, Willits, and Cobb
252 PM PDT Sun Aug 9 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT THIS EVENING...

* WHAT...Temperatures of 100 to 110 will produce moderate to major
  HeatRisk on Sunday.

* WHERE...Northern Mendocino Interior, Lake County, and Southeastern
  Interior Mendocino.

* WHEN...Until 10 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses.

* ADDITIONAL DETAILS...Hot temperatures are expected to continue into
  Sunday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ112-100500-
/O.CON.KEKA.HT.Y.0005.000000T0000Z-260810T0500Z/
Southwestern Interior Mendocino-
Including Philo, Yorkville, Comptche, and Boonville
252 PM PDT Sun Aug 9 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT THIS EVENING...

* WHAT...Temperatures of 90 to 101 will produce moderate HeatRisk on
  Sunday.

* WHERE...Southwestern Interior Mendocino.

* WHEN...Until 10 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses.

* ADDITIONAL DETAILS...Hot temperatures are expected to continue into
  Sunday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

MH


Action: Expired
Issued At: 2026-08-09 23:31:09

171 
WWUS76 KEKA 100430
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
930 PM PDT Sun Aug 9 2026

CAZ108-116-117-100530-
/O.EXP.KEKA.HT.Y.0003.000000T0000Z-260810T0500Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Forest Glen, Del Loma, Douglas City, Weaverville, Big Bar,
Zenia, Hyampom, Helena, Hayfork, Carrville, Peanut, Ruth, Trinity
Center, and Junction City
930 PM PDT Sun Aug 9 2026

...HEAT ADVISORY WILL EXPIRE AT 10 PM PDT THIS EVENING...

$$

CAZ110-111-113-114-118>120-100530-
/O.EXP.KEKA.HT.Y.0004.000000T0000Z-260810T0500Z/
Northwestern Interior Mendocino-Northeastern Interior Mendocino-
Southeastern Interior Mendocino-Northern Lake-Western Lake-
Southwestern Lake-Eastern Lake-
Including Laytonville, Redwood Valley, Finley, Gravelly Valley
Airport, Clearlake, Upper Lake, Calpella, Middletown, Hopland,
Talmage, Lakeport, Clearlake Park, Legget, Potter Valley, Ukiah,
Knobcone Camp, Hidden Valley Lake, Covelo, Willits, and Cobb
930 PM PDT Sun Aug 9 2026

...HEAT ADVISORY WILL EXPIRE AT 10 PM PDT THIS EVENING...

$$

CAZ112-100530-
/O.EXP.KEKA.HT.Y.0005.000000T0000Z-260810T0500Z/
Southwestern Interior Mendocino-
Including Philo, Yorkville, Comptche, and Boonville
930 PM PDT Sun Aug 9 2026

...HEAT ADVISORY WILL EXPIRE AT 10 PM PDT THIS EVENING...

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

JB



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