495
WWUS74 KOUN 250509
NPWOUN
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORMAN OK
1209 AM CDT TUE AUG 25 2026
OKZ036-037-044-045-TXZ085-086-090-260000-
/O.UPG.KOUN.HT.Y.0044.260825T1800Z-260826T0000Z/
/O.NEW.KOUN.XH.W.0017.260825T1800Z-260826T0000Z/
JACKSON-TILLMAN-COTTON-JEFFERSON-WILBARGER-WICHITA-CLAY-
INCLUDING THE CITIES OF WAURIKA, WALTERS, SHEPPARD AFB, RINGLING,
VERNON, HENRIETTA, FREDERICK, RYAN, ALTUS, TEMPLE, AND WICHITA FALLS
1209 AM CDT TUE AUG 25 2026
...EXTREME HEAT WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 7 PM
CDT THIS EVENING...
* WHAT...DANGEROUSLY HOT CONDITIONS WITH HIGH TEMPERATURES UP TO 113
AND HEAT INDEX VALUES UP TO 113 EXPECTED.
* WHERE...IN OKLAHOMA, JEFFERSON, COTTON, JACKSON, AND TILLMAN
COUNTIES. IN TEXAS, CLAY, WICHITA, AND WILBARGER COUNTIES.
* WHEN...FROM 1 PM THIS AFTERNOON TO 7 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.
DO NOT LEAVE YOUNG CHILDREN AND PETS IN UNATTENDED VEHICLES. CAR
INTERIORS WILL REACH LETHAL TEMPERATURES IN A MATTER OF MINUTES.
OKZ021>023-027>032-260000-
/O.EXA.KOUN.HT.Y.0044.260825T1800Z-260826T0000Z/
BECKHAM-WASHITA-CADDO-GRADY-MCCLAIN-CLEVELAND-POTTAWATOMIE-SEMINOLE-
HUGHES-
INCLUDING THE CITIES OF SENTINEL, PURCELL, CHICKASHA, ANADARKO,
TUTTLE, WETUMKA, WEWOKA, NEWCASTLE, NORMAN, SAYRE, SEMINOLE, SHAWNEE,
ELK CITY, BLANCHARD, HINTON, MOORE, HOLDENVILLE, BURNS FLAT, AND
CORDELL
1209 AM CDT TUE AUG 25 2026
...HEAT ADVISORY IN EFFECT FROM 1 PM THIS AFTERNOON TO 7 PM CDT THIS
EVENING...
* WHAT...HEAT INDEX VALUES UP TO 109 EXPECTED.
* WHERE...CLEVELAND, GRADY, MCCLAIN, POTTAWATOMIE, SEMINOLE, HUGHES,
CADDO, BECKHAM, AND WASHITA COUNTIES.
* WHEN...FROM 1 PM THIS AFTERNOON TO 7 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.
TO REDUCE RISK DURING OUTDOOR WORK, THE OCCUPATIONAL SAFETY AND
HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN
SHADED OR AIR CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT
SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN
EMERGENCY! CALL 9 1 1.
OKZ033>035-038>043-046>048-050>052-TXZ083-084-087>089-260000-
/O.CON.KOUN.HT.Y.0044.260825T1800Z-260826T0000Z/
HARMON-GREER-KIOWA-COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-
CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN-FOARD-KNOX-BAYLOR-
ARCHER-
INCLUDING THE CITIES OF DURANT, MADILL, KINGSTON, SULPHUR,
TISHOMINGO, ARCHER CITY, HOLLIS, GRANITE, LINDSAY, PAULS VALLEY,
QUANAH, CROWELL, SNYDER, ATOKA, SCOTLAND, COALGATE, SEYMOUR,
THACKERVILLE, MARIETTA, ADA, DUNCAN, HOBART, HOLLIDAY, KNOX CITY,
LAKESIDE CITY, MANGUM, DAVIS, ARDMORE, WYNNEWOOD, MUNDAY, AND LAWTON
1209 AM CDT TUE AUG 25 2026
...HEAT ADVISORY REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO 7 PM
CDT THIS EVENING...
* WHAT...HEAT INDEX VALUES UP TO 108 EXPECTED.
* WHERE...PORTIONS OF EAST CENTRAL, SOUTHEAST, SOUTHERN, AND
SOUTHWEST OKLAHOMA AND NORTHERN TEXAS.
* WHEN...FROM 1 PM THIS AFTERNOON TO 7 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.
TO REDUCE RISK DURING OUTDOOR WORK, THE OCCUPATIONAL SAFETY AND
HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN
SHADED OR AIR CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT
SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN
EMERGENCY! CALL 9 1 1.
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