892
WWUS74 KOUN 211709
NPWOUN
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORMAN OK
1209 PM CDT FRI AUG 21 2026
OKZ019-220200-
/O.CAN.KOUN.XH.W.0014.000000T0000Z-260822T0200Z/
/O.EXA.KOUN.HT.Y.0040.000000T0000Z-260822T0200Z/
LOGAN-
INCLUDING THE CITIES OF GUTHRIE
1209 PM CDT FRI AUG 21 2026
..EXTREME HEAT WARNING IS CANCELLED
..HEAT ADVISORY IN EFFECT UNTIL 9 PM CDT THIS EVENING
* WHAT...HEAT INDEX VALUES UP TO 105.
* WHERE...LOGAN COUNTY.
* 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.
OKZ025-028>032-040>043-047-048-052-211815-
/O.CAN.KOUN.XH.W.0014.000000T0000Z-260822T0200Z/
OKLAHOMA-MCCLAIN-CLEVELAND-POTTAWATOMIE-SEMINOLE-HUGHES-GARVIN-
MURRAY-PONTOTOC-COAL-JOHNSTON-ATOKA-BRYAN-
INCLUDING THE CITIES OF MOORE, COALGATE, WEWOKA, SEMINOLE, OKLAHOMA
CITY, DAVIS, HOLDENVILLE, PURCELL, NEWCASTLE, SULPHUR, BLANCHARD,
ADA, NORMAN, TISHOMINGO, WETUMKA, DURANT, WYNNEWOOD, PAULS VALLEY,
LINDSAY, ATOKA, AND SHAWNEE
1209 PM CDT FRI AUG 21 2026
..EXTREME HEAT WARNING IS CANCELLED
SHOWERS AND STORMS WILL KEEP TEMPERATURES FROM REACHING HEAT ADVISORY
LEVELS.
OKZ026-211815-
/O.CAN.KOUN.HT.Y.0040.000000T0000Z-260822T0200Z/
LINCOLN-
INCLUDING THE CITIES OF MEEKER, WELLSTON, STROUD, DAVENPORT,
CHANDLER, AND PRAGUE
1209 PM CDT FRI AUG 21 2026
..HEAT ADVISORY IS CANCELLED
SHOWERS AND STORMS WILL KEEP TEMPERATURES FROM REACHING HEAT ADVISORY
LEVELS.
OKZ044-TXZ090-220715-
/O.NEW.KOUN.HT.Y.0041.260822T1800Z-260823T0000Z/
/O.CON.KOUN.XH.W.0014.000000T0000Z-260822T0200Z/
COTTON-CLAY-
INCLUDING THE CITIES OF WALTERS, TEMPLE, AND HENRIETTA
1209 PM CDT FRI AUG 21 2026
..HEAT ADVISORY IN EFFECT FROM 1 PM TO 7 PM CDT SATURDAY
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 9 PM CDT THIS
EVENING...
* WHAT...FOR THE EXTREME HEAT WARNING, DANGEROUSLY HOT CONDITIONS
WITH HEAT INDEX VALUES UP TO 107. FOR THE HEAT ADVISORY, HEAT INDEX
VALUES UP TO 110 EXPECTED.
* WHERE...IN OKLAHOMA, COTTON COUNTY. IN TEXAS, CLAY COUNTY.
* WHEN...FOR THE EXTREME HEAT WARNING, UNTIL 9 PM CDT THIS EVENING.
FOR THE HEAT ADVISORY, FROM 1 PM TO 7 PM CDT SATURDAY.
* 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.
OKZ018-024-027-039-045-046-050-051-220200-
/O.CON.KOUN.XH.W.0014.000000T0000Z-260822T0200Z/
KINGFISHER-CANADIAN-GRADY-STEPHENS-JEFFERSON-CARTER-LOVE-MARSHALL-
INCLUDING THE CITIES OF TUTTLE, RYAN, MADILL, CHICKASHA, MUSTANG,
HENNESSEY, KINGSTON, CONCHO, ARDMORE, EL RENO, WAURIKA, OKARCHE,
THACKERVILLE, YUKON, RINGLING, DUNCAN, KINGFISHER, AND MARIETTA
1209 PM 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 106.
* WHERE...CANADIAN, GRADY, KINGFISHER, MARSHALL, CARTER, JEFFERSON,
LOVE, AND STEPHENS COUNTIES.
* 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.
OKZ033-036-037-TXZ083>089-220715-
/O.NEW.KOUN.HT.Y.0041.260822T1800Z-260823T0000Z/
/O.CON.KOUN.HT.Y.0040.000000T0000Z-260822T0200Z/
HARMON-JACKSON-TILLMAN-HARDEMAN-FOARD-WILBARGER-WICHITA-KNOX-BAYLOR-
ARCHER-
INCLUDING THE CITIES OF HOLLIS, SEYMOUR, QUANAH, HOLLIDAY, SCOTLAND,
WICHITA FALLS, KNOX CITY, ALTUS, FREDERICK, ARCHER CITY, MUNDAY,
LAKESIDE CITY, VERNON, SHEPPARD AFB, AND CROWELL
1209 PM CDT FRI AUG 21 2026
..HEAT ADVISORY IN EFFECT FROM 1 PM TO 7 PM CDT SATURDAY
..HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 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 109 EXPECTED.
* WHERE...IN OKLAHOMA, HARMON, JACKSON, AND TILLMAN COUNTIES. IN
TEXAS, ARCHER, BAYLOR, FOARD, HARDEMAN, KNOX, WICHITA, AND
WILBARGER COUNTIES.
* WHEN...FOR THE FIRST HEAT ADVISORY, UNTIL 9 PM CDT THIS EVENING.
FOR THE SECOND HEAT ADVISORY, FROM 1 PM TO 7 PM CDT SATURDAY.
* 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.
OKZ005>008-010>017-020>023-034-035-038-220200-
/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-GREER-KIOWA-COMANCHE-
INCLUDING THE CITIES OF CARMEN, WEATHERFORD, BLACKWELL, BURNS FLAT,
OKEENE, TALOGA, GRANITE, ANADARKO, GEARY, WAKITA, CHEYENNE, VICI,
HAMMON, HINTON, HELENA, SEILING, SENTINEL, WATONGA, PERRY, LAMONT,
POND CREEK, MEDFORD, SNYDER, CHEROKEE, ALVA, CLINTON, WOODWARD,
LAWTON, ELK CITY, PONCA CITY, HOBART, FAIRVIEW, CORDELL, ENID,
MANGUM, STILLWATER, LEEDEY, AND SAYRE
1209 PM CDT FRI AUG 21 2026
..HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING
* WHAT...HEAT INDEX VALUES UP TO 105.
* WHERE...PORTIONS OF CENTRAL, NORTHERN, NORTHWEST, SOUTHWEST, AND
WESTERN OKLAHOMA.
* 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.
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