815
WWUS74 KOUN 200623
NPWOUN
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORMAN OK
123 AM CDT THU AUG 20 2026
OKZ040>043-046>048-050>052-210100-
/O.CON.KOUN.XH.W.0014.260820T1800Z-260821T0100Z/
GARVIN-MURRAY-PONTOTOC-COAL-CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-
BRYAN-
INCLUDING THE CITIES OF COALGATE, MARIETTA, THACKERVILLE, DURANT,
LINDSAY, SULPHUR, PAULS VALLEY, ARDMORE, ATOKA, KINGSTON, MADILL,
DAVIS, ADA, WYNNEWOOD, AND TISHOMINGO
123 AM CDT THU AUG 20 2026
...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO
8 PM CDT THIS EVENING...
* WHAT...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...FROM 1 PM THIS AFTERNOON 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.
OKZ018-019-024>026-210100-
/O.EXA.KOUN.HT.Y.0040.260820T1800Z-260821T0100Z/
KINGFISHER-LOGAN-CANADIAN-OKLAHOMA-LINCOLN-
INCLUDING THE CITIES OF WELLSTON, KINGFISHER, CONCHO, PRAGUE,
MUSTANG, STROUD, MEEKER, HENNESSEY, DAVENPORT, YUKON, OKARCHE,
GUTHRIE, EL RENO, CHANDLER, AND OKLAHOMA CITY
123 AM CDT THU AUG 20 2026
...HEAT ADVISORY IN EFFECT FROM 1 PM THIS AFTERNOON TO 8 PM CDT THIS
EVENING...
* WHAT...HEAT INDEX VALUES UP TO 104 EXPECTED.
* WHERE...CANADIAN, KINGFISHER, LINCOLN, LOGAN, AND OKLAHOMA
COUNTIES.
* WHEN...FROM 1 PM THIS AFTERNOON 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.
OKZ023-027>039-044-045-TXZ083>090-210100-
/O.CON.KOUN.HT.Y.0040.260820T1800Z-260821T0100Z/
CADDO-GRADY-MCCLAIN-CLEVELAND-POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-
GREER-KIOWA-JACKSON-TILLMAN-COMANCHE-STEPHENS-COTTON-JEFFERSON-
HARDEMAN-FOARD-WILBARGER-WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
INCLUDING THE CITIES OF HINTON, TEMPLE, NORMAN, MANGUM, LAKESIDE
CITY, HOLDENVILLE, HENRIETTA, HOLLIDAY, ALTUS, KNOX CITY, ARCHER
CITY, RYAN, BLANCHARD, SCOTLAND, CROWELL, SHAWNEE, QUANAH, HOLLIS,
WICHITA FALLS, FREDERICK, SEYMOUR, LAWTON, MOORE, PURCELL, WEWOKA,
WALTERS, ANADARKO, SHEPPARD AFB, GRANITE, WETUMKA, CHICKASHA, SNYDER,
RINGLING, TUTTLE, DUNCAN, WAURIKA, SEMINOLE, NEWCASTLE, HOBART,
MUNDAY, AND VERNON
123 AM CDT THU AUG 20 2026
...HEAT ADVISORY REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO 8 PM
CDT THIS EVENING...
* WHAT...HEAT INDEX VALUES UP TO 107 EXPECTED.
* WHERE...PORTIONS OF CENTRAL, EAST CENTRAL, SOUTHEAST, SOUTHERN, AND
SOUTHWEST OKLAHOMA AND NORTHERN TEXAS.
* WHEN...FROM 1 PM THIS AFTERNOON 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
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page