461 
WGUS66 KEKA 211434
FFAEKA

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Eureka CA
634 AM PST Sun Dec 21 2025

...The National Weather Service in Eureka has issued a Flood Watch
for the following rivers in California...

  Mad River near Arcata affecting Northern Humboldt Coast zone.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you are in the watch area, remain alert to possible flooding.

Residents and those with interests near the river should monitor
rising water levels and be prepared for possible Flood Warnings.

Additional information is available at weather.gov/eka.

The next statement will be issued this afternoon at 245 PM PST.

&&

CAZ103-212245-
/O.NEW.KEKA.FL.A.0003.251221T2000Z-251222T0600Z/
/ARCC1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
634 AM PST Sun Dec 21 2025

...FLOOD WATCH IN EFFECT FROM THIS AFTERNOON TO THIS EVENING...

* WHAT...Flooding is possible.

* WHERE...Mad River near Arcata.

* WHEN...From this afternoon to this evening.

* IMPACTS...At 15.0 feet, Minor flooding begins on the Mad River
  Beach Road near Tyee City. At 18.0 feet, Minor flooding of Mad
  River Beach Road near Tyee City. At 21.0 feet, Flooding of Mad
  River Beach Road. Water may be flowing over roads to Tyee City.
  Flooding will be enhanced if the time of the crest is coincident
  with high tides and strong onshore winds. At 22.0 feet, Significant
  flooding of portions of Mad River Beach Road. Water may flow across
  roads to Tyee City. Flood impacts will be aggravated by high tides
  and strong, onshore winds.

* ADDITIONAL DETAILS...
  - At 5:45 AM PST Sunday the stage was 11.1 feet and is rapidly
    rising.
  - Forecast...Flood stage may be reached based on the latest
    forecast information.
  - Flood stage is 22.0 feet.
  - http://www.weather.gov/safety/flood


&&


         Fld   Observed        Forecasts (6 am PST)
Location Stg   Stg   Day/Time  Mon   Tue   Wed

Mad River
Arcata   22.0  11.1  Sun 5 am  12.7  10.6  13.5



&&

LAT...LON 4086 12407 4088 12415 4095 12413 4096 12405

$$

JB

962 
WGUS66 KEKA 211614
FFAEKA

Flood Watch
National Weather Service Eureka CA
814 AM PST Sun Dec 21 2025

...The Flood Watch continues for the following rivers in
California...

  Mad River near Arcata affecting Northern Humboldt Coast zone.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you are in the watch area, remain alert to possible flooding.

Residents and those with interests near the river should monitor
rising water levels and be prepared for possible Flood Warnings.

Additional information is available at weather.gov/eka.

The next statement will be issued this afternoon at 415 PM PST.

&&

CAZ103-220015-
/O.CON.KEKA.FL.A.0003.251221T2000Z-251222T0600Z/
/ARCC1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
814 AM PST Sun Dec 21 2025

...FLOOD WATCH REMAINS IN EFFECT FROM THIS AFTERNOON TO THIS
EVENING...

* WHAT...Flooding is possible.

* WHERE...Mad River near Arcata.

* WHEN...From this afternoon to this evening.

* IMPACTS...At 15.0 feet, Minor flooding begins on the Mad River
  Beach Road near Tyee City. At 18.0 feet, Minor flooding of Mad
  River Beach Road near Tyee City. At 21.0 feet, Flooding of Mad
  River Beach Road. Water may be flowing over roads to Tyee City.
  Flooding will be enhanced if the time of the crest is coincident
  with high tides and strong onshore winds.

* ADDITIONAL DETAILS...
  - At 7:45 AM PST Sunday the stage was 13.3 feet.
  - Forecast...Rises on the river are possible over the next few
    days. The river may reach flood stage.
  - Flood stage is 22.0 feet.
  - http://www.weather.gov/safety/flood


&&


         Fld   Observed        Forecasts (8 am PST)
Location Stg   Stg   Day/Time  Mon   Tue   Wed

Mad River
Arcata   22.0  13.3  Sun 7 am  12.4  10.7  13.7



&&

LAT...LON 4086 12407 4088 12415 4095 12413 4096 12405

$$

ZVS

850 
WGUS66 KEKA 211659
FFAEKA

Flood Watch
National Weather Service Eureka CA
859 AM PST Sun Dec 21 2025

...The Flood Watch is replaced with a River Flood Warning for the
following rivers in California...

  Mad River near Arcata affecting Northern Humboldt Coast zone.

CAZ103-211800-
/O.CAN.KEKA.FL.A.0003.251221T2000Z-251221T1659Z/
/ARCC1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
859 AM PST Sun Dec 21 2025

...FLOOD WATCH HAS BEEN REPLACED WITH A RIVER FLOOD WARNING...

The Flood Watch is cancelled for the Mad River near Arcata and has
been replaced with a Flood Warning.

* ADDITIONAL DETAILS...
  - At 8:45 AM PST Sunday the stage was 14.8 feet.
  - Forecast...The river is expected to rise above flood stage.
  - http://www.weather.gov/safety/flood


&&


         Fld   Observed        Forecasts (9 am PST)
Location Stg   Stg   Day/Time  Mon   Tue   Wed

Mad River
Arcata   22.0  14.8  Sun 8 am  14.4  13.4  16.3



&&

LAT...LON 4086 12407 4088 12415 4095 12413 4096 12405

$$

ZVS