Thanatos Weather
Tuesday, Aug 18, 2026 07:10:31

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Product Office Expire Time
Heat Advisory Norman 2026-08-18 20:00
Heat Advisory Amarillo 2026-08-18 21:00
Heat Advisory Tulsa 2026-08-19 21:00

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Severe Thunderstorm Warning 1 08/17/2026 17:25
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Severe Thunderstorm Warning 7 08/17/2026 11:45
Special Weather Statement 4 08/17/2026 10:37
Urgent Weather Statement 4 08/17/2026 23:32
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Urgent Weather Statement 2 08/18/2026 06:08
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Urgent Weather Statement 2 08/18/2026 00:55
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Convective Outlook - Day 1 5 08/18/2026 00:59
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Mesoscale Discussion 14 08/18/2026 01:25
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Heat Advisory 0038
Issued by the Norman Forecast Office

Action Issued Starts Expiration
New 2026-08-17 11:48:21 2026-08-18 11:00:00 2026-08-18 20:00:00
New 2026-08-17 11:48:21 2026-08-18 11:00:00 2026-08-18 20:00:00
Continued 2026-08-17 20:25:59 2026-08-18 11:00:00 2026-08-18 20:00:00
Continued 2026-08-17 20:25:59 2026-08-18 11:00:00 2026-08-18 20:00:00
Continued 2026-08-18 01:32:38 2026-08-18 11:00:00 2026-08-18 20:00:00


Action: New
Issued At: 2026-08-17 11:48:21

764 
WWUS74 KOUN 171648
NPWOUN

URGENT - WEATHER MESSAGE
National Weather Service Norman OK
1148 AM CDT Mon Aug 17 2026

OKZ032-039>043-045>048-050>052-180700-
/O.NEW.KOUN.XH.W.0012.260818T1600Z-260819T0100Z/
/O.CON.KOUN.HT.Y.0037.000000T0000Z-260818T0100Z/
Hughes-Stephens-Garvin-Murray-Pontotoc-Coal-Jefferson-Carter-
Johnston-Atoka-Love-Marshall-Bryan-
Including the cities of Ada, Marietta, Atoka, Wynnewood, Holdenville,
Waurika, Kingston, Davis, Lindsay, Coalgate, Wetumka, Ardmore,
Ringling, Tishomingo, Ryan, Madill, Durant, Thackerville, Sulphur,
Duncan, and Pauls Valley
1148 AM CDT Mon Aug 17 2026

...EXTREME HEAT WARNING IN EFFECT FROM 11 AM TO 8 PM CDT TUESDAY...
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING...

* WHAT...For the Heat Advisory today, heat index values up to 109.
  For the Extreme Heat Warning on Tuesday, dangerously hot conditions
  with air temperatures over 105 degrees and heat index values near
  110 degrees.

* WHERE...Portions of east central, southeast, and southern Oklahoma.

* WHEN...For the Heat Advisory today, until 8 PM CDT this evening.
  For the Extreme Heat Warning, from 11 AM to 8 PM CDT Tuesday.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat and high humidity events. 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.

&&

$$

OKZ007-008-012-013-018>020-024>031-180700-
/O.NEW.KOUN.XH.W.0012.260818T1600Z-260819T0100Z/
Grant-Kay-Garfield-Noble-Kingfisher-Logan-Payne-Canadian-Oklahoma-
Lincoln-Grady-McClain-Cleveland-Pottawatomie-Seminole-
Including the cities of Pond Creek, Chickasha, Kingfisher, Tuttle,
Mustang, Shawnee, Wakita, Guthrie, Prague, Perry, Norman, Stillwater,
Moore, Blanchard, Purcell, Wellston, Stroud, Yukon, Ponca City,
Concho, Hennessey, Blackwell, Chandler, Oklahoma City, Davenport,
Okarche, Meeker, Lamont, El Reno, Enid, Medford, Newcastle, Seminole,
and Wewoka
1148 AM CDT Mon Aug 17 2026

...EXTREME HEAT WARNING IN EFFECT FROM 11 AM TO 8 PM CDT TUESDAY...

* WHAT...Dangerously hot conditions with air temperatures over 105
  degrees expected.

* WHERE...Portions of central, east central, and northern Oklahoma.

* WHEN...From 11 AM to 8 PM CDT Tuesday.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat and high humidity events.

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.

&&

$$

OKZ036>038-044-TXZ085-086-088>090-180700-
/O.NEW.KOUN.HT.Y.0038.260818T1600Z-260819T0100Z/
/O.CON.KOUN.HT.Y.0037.000000T0000Z-260818T0100Z/
Jackson-Tillman-Comanche-Cotton-Wilbarger-Wichita-Baylor-Archer-Clay-
Including the cities of Archer City, Holliday, Altus, Lakeside City,
Vernon, Seymour, Lawton, Walters, Frederick, Sheppard AFB, Scotland,
Temple, Henrietta, and Wichita Falls
1148 AM CDT Mon Aug 17 2026

...HEAT ADVISORY IN EFFECT FROM 11 AM TO 8 PM CDT TUESDAY...
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING...

* WHAT...For the first Heat Advisory, heat index values up to 107.
  For the second Heat Advisory, heat index values up to 107 expected.

* WHERE...In Oklahoma, Comanche, Cotton, Jackson, and Tillman
  Counties. In Texas, Archer, Baylor, Clay, Wichita, and Wilbarger
  Counties.

* WHEN...For the first Heat Advisory, until 8 PM CDT this evening.
  For the second Heat Advisory, from 11 AM to 8 PM CDT Tuesday.

* 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.

&&

$$

OKZ004>006-009>011-014>017-021>023-033>035-TXZ083-084-087-180700-
/O.NEW.KOUN.HT.Y.0038.260818T1600Z-260819T0100Z/
Harper-Woods-Alfalfa-Ellis-Woodward-Major-Roger Mills-Dewey-
Custer-Blaine-Beckham-Washita-Caddo-Harmon-Greer-Kiowa-Hardeman-
Foard-Knox-
Including the cities of Cheyenne, Leedey, Quanah, Cherokee, Taloga,
Elk City, Munday, Mangum, Fargo, Okeene, Arnett, Snyder, Alva, Sayre,
Hinton, Sentinel, Crowell, Laverne, Helena, Anadarko, Vici, Geary,
Buffalo, Seiling, Gage, Woodward, Hobart, Weatherford, Cordell, Knox
City, Hollis, Granite, Hammon, Carmen, Watonga, Fairview, Burns Flat,
Clinton, and Shattuck
1148 AM CDT Mon Aug 17 2026

...HEAT ADVISORY IN EFFECT FROM 11 AM TO 8 PM CDT TUESDAY...

* WHAT...Air temperatures over 105 degrees expected.

* WHERE...Portions of northwest, southwest, and western Oklahoma and
  northern Texas.

* WHEN...From 11 AM to 8 PM CDT Tuesday.

* 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.

&&

$$


Action: New
Issued At: 2026-08-17 11:48:21

764 
WWUS74 KOUN 171648
NPWOUN

URGENT - WEATHER MESSAGE
National Weather Service Norman OK
1148 AM CDT Mon Aug 17 2026

OKZ032-039>043-045>048-050>052-180700-
/O.NEW.KOUN.XH.W.0012.260818T1600Z-260819T0100Z/
/O.CON.KOUN.HT.Y.0037.000000T0000Z-260818T0100Z/
Hughes-Stephens-Garvin-Murray-Pontotoc-Coal-Jefferson-Carter-
Johnston-Atoka-Love-Marshall-Bryan-
Including the cities of Ada, Marietta, Atoka, Wynnewood, Holdenville,
Waurika, Kingston, Davis, Lindsay, Coalgate, Wetumka, Ardmore,
Ringling, Tishomingo, Ryan, Madill, Durant, Thackerville, Sulphur,
Duncan, and Pauls Valley
1148 AM CDT Mon Aug 17 2026

...EXTREME HEAT WARNING IN EFFECT FROM 11 AM TO 8 PM CDT TUESDAY...
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING...

* WHAT...For the Heat Advisory today, heat index values up to 109.
  For the Extreme Heat Warning on Tuesday, dangerously hot conditions
  with air temperatures over 105 degrees and heat index values near
  110 degrees.

* WHERE...Portions of east central, southeast, and southern Oklahoma.

* WHEN...For the Heat Advisory today, until 8 PM CDT this evening.
  For the Extreme Heat Warning, from 11 AM to 8 PM CDT Tuesday.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat and high humidity events. 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.

&&

$$

OKZ007-008-012-013-018>020-024>031-180700-
/O.NEW.KOUN.XH.W.0012.260818T1600Z-260819T0100Z/
Grant-Kay-Garfield-Noble-Kingfisher-Logan-Payne-Canadian-Oklahoma-
Lincoln-Grady-McClain-Cleveland-Pottawatomie-Seminole-
Including the cities of Pond Creek, Chickasha, Kingfisher, Tuttle,
Mustang, Shawnee, Wakita, Guthrie, Prague, Perry, Norman, Stillwater,
Moore, Blanchard, Purcell, Wellston, Stroud, Yukon, Ponca City,
Concho, Hennessey, Blackwell, Chandler, Oklahoma City, Davenport,
Okarche, Meeker, Lamont, El Reno, Enid, Medford, Newcastle, Seminole,
and Wewoka
1148 AM CDT Mon Aug 17 2026

...EXTREME HEAT WARNING IN EFFECT FROM 11 AM TO 8 PM CDT TUESDAY...

* WHAT...Dangerously hot conditions with air temperatures over 105
  degrees expected.

* WHERE...Portions of central, east central, and northern Oklahoma.

* WHEN...From 11 AM to 8 PM CDT Tuesday.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat and high humidity events.

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.

&&

$$

OKZ036>038-044-TXZ085-086-088>090-180700-
/O.NEW.KOUN.HT.Y.0038.260818T1600Z-260819T0100Z/
/O.CON.KOUN.HT.Y.0037.000000T0000Z-260818T0100Z/
Jackson-Tillman-Comanche-Cotton-Wilbarger-Wichita-Baylor-Archer-Clay-
Including the cities of Archer City, Holliday, Altus, Lakeside City,
Vernon, Seymour, Lawton, Walters, Frederick, Sheppard AFB, Scotland,
Temple, Henrietta, and Wichita Falls
1148 AM CDT Mon Aug 17 2026

...HEAT ADVISORY IN EFFECT FROM 11 AM TO 8 PM CDT TUESDAY...
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING...

* WHAT...For the first Heat Advisory, heat index values up to 107.
  For the second Heat Advisory, heat index values up to 107 expected.

* WHERE...In Oklahoma, Comanche, Cotton, Jackson, and Tillman
  Counties. In Texas, Archer, Baylor, Clay, Wichita, and Wilbarger
  Counties.

* WHEN...For the first Heat Advisory, until 8 PM CDT this evening.
  For the second Heat Advisory, from 11 AM to 8 PM CDT Tuesday.

* 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.

&&

$$

OKZ004>006-009>011-014>017-021>023-033>035-TXZ083-084-087-180700-
/O.NEW.KOUN.HT.Y.0038.260818T1600Z-260819T0100Z/
Harper-Woods-Alfalfa-Ellis-Woodward-Major-Roger Mills-Dewey-
Custer-Blaine-Beckham-Washita-Caddo-Harmon-Greer-Kiowa-Hardeman-
Foard-Knox-
Including the cities of Cheyenne, Leedey, Quanah, Cherokee, Taloga,
Elk City, Munday, Mangum, Fargo, Okeene, Arnett, Snyder, Alva, Sayre,
Hinton, Sentinel, Crowell, Laverne, Helena, Anadarko, Vici, Geary,
Buffalo, Seiling, Gage, Woodward, Hobart, Weatherford, Cordell, Knox
City, Hollis, Granite, Hammon, Carmen, Watonga, Fairview, Burns Flat,
Clinton, and Shattuck
1148 AM CDT Mon Aug 17 2026

...HEAT ADVISORY IN EFFECT FROM 11 AM TO 8 PM CDT TUESDAY...

* WHAT...Air temperatures over 105 degrees expected.

* WHERE...Portions of northwest, southwest, and western Oklahoma and
  northern Texas.

* WHEN...From 11 AM to 8 PM CDT Tuesday.

* 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.

&&

$$


Action: Continued
Issued At: 2026-08-17 20:25:59

860 
WWUS74 KOUN 180125
NPWOUN

URGENT - WEATHER MESSAGE
National Weather Service Norman OK
825 PM CDT Mon Aug 17 2026

OKZ032-039>043-045>048-050>052-181530-
/O.EXP.KOUN.HT.Y.0037.000000T0000Z-260818T0100Z/
/O.CON.KOUN.XH.W.0012.260818T1600Z-260819T0100Z/
Hughes-Stephens-Garvin-Murray-Pontotoc-Coal-Jefferson-Carter-
Johnston-Atoka-Love-Marshall-Bryan-
Including the cities of Pauls Valley, Kingston, Duncan, Wynnewood,
Coalgate, Ryan, Madill, Ada, Thackerville, Ardmore, Durant, Ringling,
Atoka, Lindsay, Tishomingo, Marietta, Holdenville, Wetumka, Davis,
Sulphur, and Waurika
825 PM CDT Mon Aug 17 2026

...HEAT ADVISORY HAS EXPIRED...
...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 11 AM TO 8 PM CDT
TUESDAY...

* WHAT...Dangerously hot conditions with heat index values up to 109
  expected.

* WHERE...Portions of east central, southeast, and southern Oklahoma.

* WHEN...From 11 AM to 8 PM CDT Tuesday.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat and high humidity events.

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.

&&

$$

OKZ036>038-044-TXZ085-086-088>090-181530-
/O.EXP.KOUN.HT.Y.0037.000000T0000Z-260818T0100Z/
/O.CON.KOUN.HT.Y.0038.260818T1600Z-260819T0100Z/
Jackson-Tillman-Comanche-Cotton-Wilbarger-Wichita-Baylor-Archer-Clay-
Including the cities of Wichita Falls, Temple, Sheppard AFB, Archer
City, Lawton, Vernon, Henrietta, Holliday, Lakeside City, Altus,
Seymour, Scotland, Frederick, and Walters
825 PM CDT Mon Aug 17 2026

...HEAT ADVISORY HAS EXPIRED...
...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TO 8 PM CDT TUESDAY...

* WHAT...Heat index values up to 108 expected.

* WHERE...In Oklahoma, Comanche, Cotton, Jackson, and Tillman
  Counties. In Texas, Archer, Baylor, Clay, Wichita, and Wilbarger
  Counties.

* WHEN...From 11 AM to 8 PM CDT Tuesday.

* 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.

&&

$$

OKZ007-008-012-013-018>020-024>031-181530-
/O.CON.KOUN.XH.W.0012.260818T1600Z-260819T0100Z/
Grant-Kay-Garfield-Noble-Kingfisher-Logan-Payne-Canadian-Oklahoma-
Lincoln-Grady-McClain-Cleveland-Pottawatomie-Seminole-
Including the cities of Blanchard, Chandler, Norman, Ponca City,
Meeker, Blackwell, Okarche, Tuttle, Kingfisher, Perry, Lamont,
Seminole, Chickasha, Pond Creek, Guthrie, Stroud, Wellston, Shawnee,
Enid, Newcastle, Medford, El Reno, Wakita, Oklahoma City, Moore,
Hennessey, Prague, Davenport, Mustang, Purcell, Wewoka, Stillwater,
Concho, and Yukon
825 PM CDT Mon Aug 17 2026

...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 11 AM TO 8 PM CDT
TUESDAY...

* WHAT...Dangerously hot conditions with heat index values up to 109
  expected.

* WHERE...Portions of central, east central, and northern Oklahoma.

* WHEN...From 11 AM to 8 PM CDT Tuesday.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat and high humidity events.

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.

&&

$$

OKZ004>006-009>011-014>017-021>023-033>035-TXZ083-084-087-181530-
/O.CON.KOUN.HT.Y.0038.260818T1600Z-260819T0100Z/
Harper-Woods-Alfalfa-Ellis-Woodward-Major-Roger Mills-Dewey-
Custer-Blaine-Beckham-Washita-Caddo-Harmon-Greer-Kiowa-Hardeman-
Foard-Knox-
Including the cities of Cherokee, Hobart, Hammon, Burns Flat, Carmen,
Crowell, Laverne, Sayre, Buffalo, Snyder, Mangum, Taloga, Hinton,
Cordell, Quanah, Hollis, Elk City, Knox City, Watonga, Woodward,
Arnett, Granite, Fargo, Anadarko, Seiling, Alva, Okeene, Munday,
Helena, Geary, Weatherford, Cheyenne, Clinton, Leedey, Vici, Gage,
Shattuck, Sentinel, and Fairview
825 PM CDT Mon Aug 17 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TO 8 PM CDT TUESDAY...

* WHAT...Heat index values up to 106 expected.

* WHERE...Portions of northwest, southwest, and western Oklahoma and
  northern Texas.

* WHEN...From 11 AM to 8 PM CDT Tuesday.

* 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.

&&

$$


Action: Continued
Issued At: 2026-08-17 20:25:59

860 
WWUS74 KOUN 180125
NPWOUN

URGENT - WEATHER MESSAGE
National Weather Service Norman OK
825 PM CDT Mon Aug 17 2026

OKZ032-039>043-045>048-050>052-181530-
/O.EXP.KOUN.HT.Y.0037.000000T0000Z-260818T0100Z/
/O.CON.KOUN.XH.W.0012.260818T1600Z-260819T0100Z/
Hughes-Stephens-Garvin-Murray-Pontotoc-Coal-Jefferson-Carter-
Johnston-Atoka-Love-Marshall-Bryan-
Including the cities of Pauls Valley, Kingston, Duncan, Wynnewood,
Coalgate, Ryan, Madill, Ada, Thackerville, Ardmore, Durant, Ringling,
Atoka, Lindsay, Tishomingo, Marietta, Holdenville, Wetumka, Davis,
Sulphur, and Waurika
825 PM CDT Mon Aug 17 2026

...HEAT ADVISORY HAS EXPIRED...
...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 11 AM TO 8 PM CDT
TUESDAY...

* WHAT...Dangerously hot conditions with heat index values up to 109
  expected.

* WHERE...Portions of east central, southeast, and southern Oklahoma.

* WHEN...From 11 AM to 8 PM CDT Tuesday.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat and high humidity events.

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.

&&

$$

OKZ036>038-044-TXZ085-086-088>090-181530-
/O.EXP.KOUN.HT.Y.0037.000000T0000Z-260818T0100Z/
/O.CON.KOUN.HT.Y.0038.260818T1600Z-260819T0100Z/
Jackson-Tillman-Comanche-Cotton-Wilbarger-Wichita-Baylor-Archer-Clay-
Including the cities of Wichita Falls, Temple, Sheppard AFB, Archer
City, Lawton, Vernon, Henrietta, Holliday, Lakeside City, Altus,
Seymour, Scotland, Frederick, and Walters
825 PM CDT Mon Aug 17 2026

...HEAT ADVISORY HAS EXPIRED...
...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TO 8 PM CDT TUESDAY...

* WHAT...Heat index values up to 108 expected.

* WHERE...In Oklahoma, Comanche, Cotton, Jackson, and Tillman
  Counties. In Texas, Archer, Baylor, Clay, Wichita, and Wilbarger
  Counties.

* WHEN...From 11 AM to 8 PM CDT Tuesday.

* 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.

&&

$$

OKZ007-008-012-013-018>020-024>031-181530-
/O.CON.KOUN.XH.W.0012.260818T1600Z-260819T0100Z/
Grant-Kay-Garfield-Noble-Kingfisher-Logan-Payne-Canadian-Oklahoma-
Lincoln-Grady-McClain-Cleveland-Pottawatomie-Seminole-
Including the cities of Blanchard, Chandler, Norman, Ponca City,
Meeker, Blackwell, Okarche, Tuttle, Kingfisher, Perry, Lamont,
Seminole, Chickasha, Pond Creek, Guthrie, Stroud, Wellston, Shawnee,
Enid, Newcastle, Medford, El Reno, Wakita, Oklahoma City, Moore,
Hennessey, Prague, Davenport, Mustang, Purcell, Wewoka, Stillwater,
Concho, and Yukon
825 PM CDT Mon Aug 17 2026

...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 11 AM TO 8 PM CDT
TUESDAY...

* WHAT...Dangerously hot conditions with heat index values up to 109
  expected.

* WHERE...Portions of central, east central, and northern Oklahoma.

* WHEN...From 11 AM to 8 PM CDT Tuesday.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat and high humidity events.

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.

&&

$$

OKZ004>006-009>011-014>017-021>023-033>035-TXZ083-084-087-181530-
/O.CON.KOUN.HT.Y.0038.260818T1600Z-260819T0100Z/
Harper-Woods-Alfalfa-Ellis-Woodward-Major-Roger Mills-Dewey-
Custer-Blaine-Beckham-Washita-Caddo-Harmon-Greer-Kiowa-Hardeman-
Foard-Knox-
Including the cities of Cherokee, Hobart, Hammon, Burns Flat, Carmen,
Crowell, Laverne, Sayre, Buffalo, Snyder, Mangum, Taloga, Hinton,
Cordell, Quanah, Hollis, Elk City, Knox City, Watonga, Woodward,
Arnett, Granite, Fargo, Anadarko, Seiling, Alva, Okeene, Munday,
Helena, Geary, Weatherford, Cheyenne, Clinton, Leedey, Vici, Gage,
Shattuck, Sentinel, and Fairview
825 PM CDT Mon Aug 17 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TO 8 PM CDT TUESDAY...

* WHAT...Heat index values up to 106 expected.

* WHERE...Portions of northwest, southwest, and western Oklahoma and
  northern Texas.

* WHEN...From 11 AM to 8 PM CDT Tuesday.

* 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.

&&

$$


Action: Continued
Issued At: 2026-08-18 01:32:38

914 
WWUS74 KOUN 180632
NPWOUN

URGENT - WEATHER MESSAGE
National Weather Service Norman OK
132 AM CDT Tue Aug 18 2026

OKZ007-008-012-013-018>020-024>032-039>043-045>048-050>052-190100-
/O.CON.KOUN.XH.W.0012.260818T1600Z-260819T0100Z/
Grant-Kay-Garfield-Noble-Kingfisher-Logan-Payne-Canadian-Oklahoma-
Lincoln-Grady-McClain-Cleveland-Pottawatomie-Seminole-Hughes-
Stephens-Garvin-Murray-Pontotoc-Coal-Jefferson-Carter-Johnston-Atoka-
Love-Marshall-Bryan-
Including the cities of Duncan, Coalgate, Ryan, Marietta, Chandler,
Stroud, Newcastle, Ardmore, Tishomingo, Hennessey, Pond Creek, Ponca
City, Blackwell, Shawnee, Ringling, Wakita, Ada, Blanchard, Perry,
Wewoka, El Reno, Wellston, Kingfisher, Davenport, Oklahoma City,
Thackerville, Yukon, Okarche, Norman, Medford, Moore, Lamont,
Chickasha, Wynnewood, Pauls Valley, Sulphur, Meeker, Enid, Prague,
Seminole, Lindsay, Stillwater, Madill, Kingston, Holdenville, Tuttle,
Purcell, Atoka, Davis, Wetumka, Waurika, Durant, Concho, Mustang, and
Guthrie
132 AM CDT Tue Aug 18 2026

...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO
8 PM CDT THIS EVENING...

* WHAT...Dangerously hot conditions with heat index values up to 109
  expected.

* WHERE...Portions of central, east central, northern, southeast, and
  southern Oklahoma.

* WHEN...From 11 AM this morning to 8 PM CDT this evening.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat and high humidity events.

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.

&&

$$

OKZ004>006-009>011-014>017-021>023-033>038-044-TXZ083>090-190100-
/O.CON.KOUN.HT.Y.0038.260818T1600Z-260819T0100Z/
Harper-Woods-Alfalfa-Ellis-Woodward-Major-Roger Mills-Dewey-
Custer-Blaine-Beckham-Washita-Caddo-Harmon-Greer-Kiowa-Jackson-
Tillman-Comanche-Cotton-Hardeman-Foard-Wilbarger-Wichita-Knox-Baylor-
Archer-Clay-
Including the cities of Elk City, Burns Flat, Hobart, Buffalo,
Granite, Carmen, Fairview, Sentinel, Sheppard AFB, Leedey, Hollis,
Okeene, Arnett, Seymour, Holliday, Hammon, Munday, Snyder, Alva,
Altus, Henrietta, Weatherford, Shattuck, Quanah, Vici, Geary,
Scotland, Cheyenne, Vernon, Lawton, Sayre, Cordell, Helena, Seiling,
Gage, Clinton, Archer City, Hinton, Anadarko, Crowell, Lakeside City,
Cherokee, Mangum, Wichita Falls, Walters, Knox City, Taloga,
Frederick, Laverne, Woodward, Fargo, Temple, and Watonga
132 AM CDT Tue Aug 18 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 8 PM
CDT THIS EVENING...

* WHAT...Heat index values up to 107 expected.

* WHERE...Portions of northwest, southwest, and western Oklahoma and
  northern Texas.

* WHEN...From 11 AM this morning to 8 PM CDT 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.

&&

$$

JP





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