357
WWUS74 KOUN 191728
NPWOUN
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORMAN OK
1228 PM CDT WED AUG 19 2026
OKZ007-008-191830-
/O.CAN.KOUN.XH.W.0013.000000T0000Z-260820T0100Z/
GRANT-KAY-
INCLUDING THE CITIES OF MEDFORD, BLACKWELL, LAMONT, WAKITA, PONCA
CITY, AND POND CREEK
1228 PM CDT WED AUG 19 2026
..EXTREME HEAT WARNING IS CANCELLED
A COLD FRONT AND ASSOCIATED CLOUD COVER WILL PREVENT TEMPERATURES
FROM REACHING HEAT ADVISORY CRITERIA. TEMPERATURES WILL STILL BE HOT,
REACHING INTO THE UPPER 90S.
OKZ004>006-010-191830-
/O.CAN.KOUN.HT.Y.0039.000000T0000Z-260820T0100Z/
HARPER-WOODS-ALFALFA-WOODWARD-
INCLUDING THE CITIES OF ALVA, CHEROKEE, LAVERNE, HELENA, CARMEN,
WOODWARD, AND BUFFALO
1228 PM CDT WED AUG 19 2026
..HEAT ADVISORY IS CANCELLED
A COLD FRONT AND ASSOCIATED CLOUD COVER WILL PREVENT TEMPERATURES
FROM REACHING HEAT ADVISORY CRITERIA. TEMPERATURES WILL STILL BE HOT,
REACHING INTO THE UPPER 90S.
OKZ040>043-046>048-050>052-200730-
/O.NEW.KOUN.XH.W.0014.260820T1800Z-260821T0100Z/
/O.CON.KOUN.XH.W.0013.000000T0000Z-260820T0100Z/
GARVIN-MURRAY-PONTOTOC-COAL-CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-
BRYAN-
INCLUDING THE CITIES OF MADILL, SULPHUR, WYNNEWOOD, THACKERVILLE,
PAULS VALLEY, KINGSTON, ARDMORE, DAVIS, COALGATE, ATOKA, MARIETTA,
ADA, TISHOMINGO, DURANT, AND LINDSAY
1228 PM CDT WED AUG 19 2026
..EXTREME HEAT WARNING IN EFFECT FROM 1 PM TO 8 PM CDT THURSDAY
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM CDT THIS
EVENING...
* WHAT...FOR THE FIRST EXTREME HEAT WARNING, DANGEROUSLY HOT
CONDITIONS WITH HEAT INDEX VALUES UP TO 110. FOR THE SECOND EXTREME
HEAT WARNING, DANGEROUSLY HOT CONDITIONS WITH HEAT INDEX VALUES UP
TO 110 EXPECTED.
* WHERE...PONTOTOC, ATOKA, BRYAN, COAL, JOHNSTON, MARSHALL, CARTER,
GARVIN, LOVE, AND MURRAY COUNTIES.
* WHEN...FOR THE FIRST EXTREME HEAT WARNING, UNTIL 8 PM CDT THIS
EVENING. FOR THE SECOND EXTREME HEAT WARNING, FROM 1 PM TO 8 PM CDT
THURSDAY.
* 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.
OKZ027>032-039-045-200730-
/O.NEW.KOUN.HT.Y.0040.260820T1800Z-260821T0100Z/
/O.CON.KOUN.XH.W.0013.000000T0000Z-260820T0100Z/
GRADY-MCCLAIN-CLEVELAND-POTTAWATOMIE-SEMINOLE-HUGHES-STEPHENS-
JEFFERSON-
INCLUDING THE CITIES OF PURCELL, RYAN, DUNCAN, TUTTLE, CHICKASHA,
SEMINOLE, HOLDENVILLE, WEWOKA, WAURIKA, BLANCHARD, SHAWNEE, WETUMKA,
NEWCASTLE, RINGLING, NORMAN, AND MOORE
1228 PM CDT WED AUG 19 2026
..HEAT ADVISORY IN EFFECT FROM 1 PM TO 8 PM CDT THURSDAY
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM CDT THIS
EVENING...
* WHAT...FOR THE EXTREME HEAT WARNING, DANGEROUSLY HOT CONDITIONS
WITH HEAT INDEX VALUES UP TO 109. FOR THE HEAT ADVISORY, HEAT INDEX
VALUES UP TO 108 EXPECTED.
* WHERE...CLEVELAND, GRADY, MCCLAIN, POTTAWATOMIE, SEMINOLE, HUGHES,
JEFFERSON, AND STEPHENS COUNTIES.
* WHEN...FOR THE EXTREME HEAT WARNING, UNTIL 8 PM CDT THIS EVENING.
FOR THE HEAT ADVISORY, FROM 1 PM TO 8 PM CDT THURSDAY.
* 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.
OKZ012-013-018>020-024>026-200100-
/O.CON.KOUN.XH.W.0013.000000T0000Z-260820T0100Z/
GARFIELD-NOBLE-KINGFISHER-LOGAN-PAYNE-CANADIAN-OKLAHOMA-LINCOLN-
INCLUDING THE CITIES OF KINGFISHER, YUKON, STROUD, PERRY, WELLSTON,
DAVENPORT, MEEKER, PRAGUE, MUSTANG, HENNESSEY, OKARCHE, STILLWATER,
GUTHRIE, ENID, CHANDLER, OKLAHOMA CITY, CONCHO, AND EL RENO
1228 PM CDT WED AUG 19 2026
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM CDT THIS
EVENING...
* WHAT...DANGEROUSLY HOT CONDITIONS WITH HEAT INDEX VALUES UP TO 109.
* WHERE...CANADIAN, KINGFISHER, LINCOLN, LOGAN, OKLAHOMA, PAYNE,
GARFIELD, AND NOBLE COUNTIES.
* WHEN...UNTIL 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.
OKZ023-033>038-044-TXZ083>090-200730-
/O.NEW.KOUN.HT.Y.0040.260820T1800Z-260821T0100Z/
/O.CON.KOUN.HT.Y.0039.000000T0000Z-260820T0100Z/
CADDO-HARMON-GREER-KIOWA-JACKSON-TILLMAN-COMANCHE-COTTON-HARDEMAN-
FOARD-WILBARGER-WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
INCLUDING THE CITIES OF SEYMOUR, WALTERS, LAKESIDE CITY, CROWELL,
WICHITA FALLS, ANADARKO, ALTUS, MANGUM, GRANITE, HENRIETTA, LAWTON,
HOLLIS, ARCHER CITY, SNYDER, HOLLIDAY, SCOTLAND, FREDERICK, SHEPPARD
AFB, KNOX CITY, QUANAH, MUNDAY, VERNON, TEMPLE, HOBART, AND HINTON
1228 PM CDT WED AUG 19 2026
..HEAT ADVISORY IN EFFECT FROM 1 PM TO 8 PM CDT THURSDAY
..HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING
* WHAT...FOR THE FIRST HEAT ADVISORY, HEAT INDEX VALUES UP TO 108.
FOR THE SECOND HEAT ADVISORY, HEAT INDEX VALUES UP TO 107 EXPECTED.
* WHERE...PORTIONS OF SOUTHWEST OKLAHOMA AND NORTHERN TEXAS.
* WHEN...FOR THE FIRST HEAT ADVISORY, UNTIL 8 PM CDT THIS EVENING.
FOR THE SECOND HEAT ADVISORY, FROM 1 PM TO 8 PM CDT THURSDAY.
* 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.
OKZ009-011-014>017-021-022-200100-
/O.CON.KOUN.HT.Y.0039.000000T0000Z-260820T0100Z/
ELLIS-MAJOR-ROGER MILLS-DEWEY-CUSTER-BLAINE-BECKHAM-WASHITA-
INCLUDING THE CITIES OF WEATHERFORD, CLINTON, ELK CITY, VICI,
FAIRVIEW, SENTINEL, SHATTUCK, FARGO, SAYRE, WATONGA, HAMMON, SEILING,
CORDELL, TALOGA, GAGE, LEEDEY, CHEYENNE, BURNS FLAT, ARNETT, GEARY,
AND OKEENE
1228 PM CDT WED AUG 19 2026
..HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING
* WHAT...TEMPERATURES UP TO 108.
* WHERE...BLAINE, DEWEY, ELLIS, MAJOR, BECKHAM, CUSTER, ROGER MILLS,
AND WASHITA COUNTIES.
* WHEN...UNTIL 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.
MAD
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