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WWUS74 KOUN 210711
NPWOUN

URGENT - WEATHER MESSAGE
National Weather Service Norman OK
211 AM CDT Fri Aug 21 2026

OKZ018-019-024-025-027>032-039>048-050>052-TXZ090-220200-
/O.CON.KOUN.XH.W.0014.000000T0000Z-260822T0200Z/
Kingfisher-Logan-Canadian-Oklahoma-Grady-McClain-Cleveland-
Pottawatomie-Seminole-Hughes-Stephens-Garvin-Murray-Pontotoc-Coal-
Cotton-Jefferson-Carter-Johnston-Atoka-Love-Marshall-Bryan-Clay-
Including the cities of Temple, Sulphur, Ada, Marietta, Yukon,
Waurika, Madill, Ardmore, Norman, Thackerville, Wewoka, Purcell,
Wetumka, Pauls Valley, Atoka, Duncan, Durant, Newcastle, Lindsay,
Concho, Walters, El Reno, Chickasha, Ryan, Okarche, Coalgate,
Hennessey, Oklahoma City, Kingston, Kingfisher, Wynnewood, Shawnee,
Ringling, Holdenville, Moore, Seminole, Tishomingo, Guthrie, Davis,
Blanchard, Mustang, Henrietta, and Tuttle
211 AM CDT Fri Aug 21 2026

...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 9 PM CDT THIS
EVENING...

* WHAT...Dangerously hot conditions with heat index values up to 111.

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

* WHEN...Until 9 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.

&&

$$

OKZ005>008-010>017-020>023-026-033>038-TXZ083>089-220200-
/O.CON.KOUN.HT.Y.0040.000000T0000Z-260822T0200Z/
Woods-Alfalfa-Grant-Kay-Woodward-Major-Garfield-Noble-Roger Mills-
Dewey-Custer-Blaine-Payne-Beckham-Washita-Caddo-Lincoln-Harmon-Greer-
Kiowa-Jackson-Tillman-Comanche-Hardeman-Foard-Wilbarger-Wichita-Knox-
Baylor-Archer-
Including the cities of Lawton, Scotland, Wellston, Watonga, Carmen,
Prague, Enid, Vici, Davenport, Fairview, Wichita Falls, Quanah,
Perry, Clinton, Anadarko, Cherokee, Lamont, Granite, Sayre, Okeene,
Snyder, Crowell, Sheppard AFB, Hinton, Seiling, Sentinel, Burns Flat,
Holliday, Seymour, Stroud, Lakeside City, Pond Creek, Helena,
Cheyenne, Alva, Hobart, Knox City, Meeker, Archer City, Geary,
Woodward, Medford, Elk City, Vernon, Stillwater, Wakita, Cordell,
Blackwell, Hammon, Frederick, Leedey, Taloga, Munday, Chandler, Ponca
City, Weatherford, Mangum, Hollis, and Altus
211 AM CDT Fri Aug 21 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING...

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

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

* WHEN...Until 9 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.

&&

$$