Extreme Heat Warning
URGENT - WEATHER MESSAGE
National Weather Service Norman OK
Issued by National Weather Service Tulsa OK
1132 AM CDT Tue Aug 18 2026
OKZ007-008-012-013-018>020-024>032-039>043-045>048-050>052-191500-
/O.NEW.KOUN.XH.W.0013.260819T1600Z-260820T0100Z/
/O.CON.KOUN.XH.W.0012.000000T0000Z-260819T0100Z/
Grant-Kay-Garfield-Noble-Kingfisher-Logan-Payne-Canadian-Oklahoma-
Lincoln-Grady-McClain-Cleveland-Pottawatomie-Seminole-Hughes-
Stephens-Garvin-Murray-Pontotoc-Coal-Jefferson-Carter-Johnston-Atoka-
Love-Marshall-Bryan-
Including the cities of Blackwell, Coalgate, Thackerville, Sulphur,
Norman, Perry, Stillwater, Wewoka, Wakita, Madill, Davenport,
Seminole, Wellston, Davis, Kingston, Stroud, Meeker, Marietta, Pauls
Valley, Lamont, Prague, Holdenville, Blanchard, Ardmore, Duncan,
Enid, Tishomingo, Atoka, Moore, Wetumka, El Reno, Yukon, Concho,
Ringling, Waurika, Mustang, Tuttle, Medford, Purcell, Ryan, Durant,
Oklahoma City, Guthrie, Ponca City, Chandler, Chickasha, Shawnee,
Kingfisher, Wynnewood, Ada, Okarche, Hennessey, Lindsay, Pond Creek,
and Newcastle
1132 AM CDT Tue Aug 18 2026
...EXTREME HEAT WARNING IN EFFECT FROM 11 AM TO 8 PM CDT WEDNESDAY...
...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...Portions of central, east central, northern, southeast, and
southern Oklahoma.
* WHEN...For the first Extreme Heat Warning, until 8 PM CDT this
evening. For the second Extreme Heat Warning, from 11 AM to 8 PM
CDT Wednesday.
* 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.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Fort Worth TX
1217 PM CDT Tue Aug 18 2026
TXZ091>095-100>107-115>123-129>134-190600-
/O.EXP.KFWD.HT.Y.0025.000000T0000Z-260818T1700Z/
/O.EXT.KFWD.XH.W.0002.000000T0000Z-260820T0100Z/
Montague-Cooke-Grayson-Fannin-Lamar-Young-Jack-Wise-Denton-Collin-
Hunt-Delta-Hopkins-Stephens-Palo Pinto-Parker-Tarrant-Dallas-
Rockwall-Kaufman-Van Zandt-Rains-Eastland-Erath-Hood-Somervell-
Johnson-Ellis-
Including the cities of Bowie, Wills Point, Cleburne, Granbury,
Ennis, Olney, Decatur, Heath, Jacksboro, Gainesville, Bridgeport,
Forney, Frisco, Sherman, Nocona, Glen Rose, Eastland, Denton, Plano,
Cisco, Cooper, Briar, Dallas, Canton, Gorman, Fort Worth, Waxahachie,
Denison, Sulphur Springs, Flower Mound, Dublin, Weatherford,
Commerce, Breckenridge, Edgewood, Greenville, Midlothian, Grand
Saline, Oak Trail Shores, Carrollton, Rockwall, Burleson, Bonham,
Van, Terrell, Allen, Arlington, Stephenville, Kaufman, East Tawakoni,
Ranger, McKinney, Graham, Emory, Mineral Wells, Paris, Point, and
Lewisville
1217 PM CDT Tue Aug 18 2026
...EXTREME HEAT WARNING NOW IN EFFECT UNTIL 8 PM CDT WEDNESDAY...
...HEAT ADVISORY HAS EXPIRED...
* WHAT...Dangerously hot conditions with air temperatures up to 108
degrees.
* WHERE...North Texas.
* WHEN...Until 8 PM CDT Wednesday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat and high humidity events.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Take extra precautions when outside by staying hydrated, wearing
lightweight and loose fitting clothing, and limiting strenuous
activities to the early morning or evening. Check up on relatives and
neighbors. Never leave young children or pets in an enclosed vehicle,
even for a short time, as temperatures can quickly rise to
life-threatening levels.
Know the signs and symptoms of heat exhaustion and heat stroke. To
reduce risk when outdoors, 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 911 ASAP if you or someone you know is exhibiting signs of heat
stroke.
Extreme heat is dangerous, especially for those without reliable
shelter. Limit time outdoors during the hottest time of the day,
typically from 2 to 7 PM, rest in the shade when possible, and drink
plenty of water. Locate nearby cooling centers through local
resources or dial 2-1-1 in Texas.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Tulsa OK
1145 AM CDT Tue Aug 18 2026
ARZ129-219-220-229-OKZ049-053-055>057-059>062-064>067-070-071-
073>075-154-176-254-272-276-354-376-190600-
/O.CON.KTSA.XH.W.0015.260818T1800Z-260820T0200Z/
North and Central Sebastian-Southern Crawford-Central and
Southern Franklin-Southern Sebastian-Pushmataha-Choctaw-
Washington OK-Nowata-Craig-Pawnee-Tulsa-Rogers-Mayes-Creek-
Okfuskee-Okmulgee-Wagoner-Muskogee-McIntosh-Pittsburg-Haskell-
Latimer-Western Osage-Northern Le Flore-Northeast Osage-
Central and Southern Sequoyah-Central Le Flore-Southeast Osage-
Southern Le Flore-
Including the cities of Hugo, Pawnee, Clayton, Watalula, Patterson,
Vinita, Fairfax, Talihina, Arkoma, Spiro, Hartford, Liberty, Panama,
Fort Smith, Pryor, Ozark, Hominy, Mansfield, Pawhuska, Tulsa, Pocola,
Wagoner, Poteau, Antlers, Wilburton, Charleston, Van Buren,
McAlester, Cravens, Okemah, Shidler, Sallisaw, Sapulpa, Lonelm,
Claremore, Huntington, Stigler, Okmulgee, Cecil, Bartlesville,
Nowata, Checotah, Muskogee, and Jethro
1145 AM CDT Tue Aug 18 2026
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 9 PM CDT WEDNESDAY...
* WHAT...Dangerously hot conditions with heat index values up to 112
expected.
* WHERE...Portions of northwest and west central Arkansas and east
central, northeast, and southeast Oklahoma.
* WHEN...Until 9 PM CDT Wednesday.
* 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.
Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.
&&
$$
