Heat Advisory
URGENT - WEATHER MESSAGE
National Weather Service Tulsa OK
1212 PM CDT Thu Aug 20 2026
ARZ129-219-220-229-OKZ065-066-070-071-073>075-176-272-276-376-210600-
/O.NEW.KTSA.HT.Y.0041.260821T1700Z-260822T0100Z/
/O.CON.KTSA.HT.Y.0040.260820T1800Z-260821T0100Z/
North and Central Sebastian-Southern Crawford-Central and
Southern Franklin-Southern Sebastian-Okfuskee-Okmulgee-Muskogee-
McIntosh-Pittsburg-Haskell-Latimer-Northern Le Flore-Central and
Southern Sequoyah-Central Le Flore-Southern Le Flore-
Including the cities of Hartford, Muskogee, Mansfield, Jethro,
Checotah, Fort Smith, Patterson, Arkoma, Okemah, McAlester, Liberty,
Huntington, Poteau, Ozark, Spiro, Panama, Talihina, Sallisaw, Lonelm,
Pocola, Cravens, Watalula, Okmulgee, Stigler, Van Buren, Wilburton,
Charleston, and Cecil
1212 PM CDT Thu Aug 20 2026
...HEAT ADVISORY IN EFFECT FROM NOON TO 8 PM CDT FRIDAY...
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING...
* WHAT...Heat index values up to 109 expected.
* WHERE...Portions of northwest and west central Arkansas and east
central, northeast, and southeast Oklahoma.
* WHEN...For the first Heat Advisory, until 8 PM CDT this evening.
For the second Heat Advisory, from noon to 8 PM CDT Friday.
* IMPACTS...Heat related illnesses are possible especially impacting
those not acclimated to the conditions or those performing
strenuous activities.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Tulsa OK
1212 PM CDT Thu Aug 20 2026
OKZ049-053-210600-
/O.NEW.KTSA.HT.Y.0041.260821T1700Z-260822T0100Z/
/O.CON.KTSA.XH.W.0016.260820T1800Z-260821T0100Z/
Pushmataha-Choctaw-
Including the cities of Antlers, Clayton, and Hugo
1212 PM CDT Thu Aug 20 2026
...HEAT ADVISORY IN EFFECT FROM NOON TO 8 PM CDT FRIDAY...
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM CDT THIS
EVENING...
* WHAT...For the Extreme Heat Warning, dangerously hot conditions
with heat index values up to 110 expected. For the Heat Advisory,
heat index values up to 108 expected.
* WHERE...Choctaw and Pushmataha Counties.
* WHEN...For the Extreme Heat Warning, until 8 PM CDT this evening.
For the Heat Advisory, from noon to 8 PM CDT Friday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat and high humidity events. Heat related illnesses are
possible especially impacting those not acclimated to the
conditions or those performing strenuous activities.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
Stay cool, stay hydrated, stay informed.
Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Tulsa OK
1212 PM CDT Thu Aug 20 2026
OKZ059>062-064-067-068-172-354-210600-
/O.NEW.KTSA.HT.Y.0041.260821T1700Z-260822T0100Z/
/O.EXA.KTSA.HT.Y.0040.260820T1800Z-260821T0100Z/
Pawnee-Tulsa-Rogers-Mayes-Creek-Wagoner-Cherokee-Northern Sequoyah-
Southeast Osage-
Including the cities of Wagoner, Hominy, Claremore, Tulsa, Sapulpa,
Marble City, Tahlequah, Pryor, and Pawnee
1212 PM CDT Thu Aug 20 2026
...HEAT ADVISORY IN EFFECT FROM NOON TO 8 PM CDT FRIDAY...
...HEAT ADVISORY IN EFFECT UNTIL 8 PM CDT THIS EVENING...
* WHAT...Heat index values up to 108 expected.
* WHERE...Cherokee, Northern Sequoyah, Creek, Mayes, Pawnee, Rogers,
Southeast Osage, Tulsa, and Wagoner Counties.
* WHEN...For the first Heat Advisory, until 8 PM CDT this evening.
For the second Heat Advisory, from noon to 8 PM CDT Friday.
* IMPACTS...Heat related illnesses are possible especially impacting
those not acclimated to the conditions or those performing
strenuous activities.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Shreveport LA
802 PM CDT Thu Aug 20 2026
ARZ050-051-059>061-070>072-OKZ077-TXZ096-097-108>112-211200-
/O.EXP.KSHV.XH.W.0003.000000T0000Z-260821T0100Z/
/O.CON.KSHV.HT.Y.0010.000000T0000Z-260822T0200Z/
Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette-
Columbia-McCurtain-Red River-Bowie-Franklin-Titus-Camp-Morris-
Cass-
Including the cities of Mount Vernon, Hughes Springs, De Queen,
Clarksville, Idabel, Lone Star, Bogata, Prescott, Naples, Mineral
Springs, Queen City, Mount Pleasant, Lewisville, Dierks,
Daingerfield, Stamps, Bradley, Broken Bow, Magnolia, Ashdown, Omaha,
Nashville, Hope, Atlanta, Linden, Pittsburg, and Texarkana
802 PM CDT Thu Aug 20 2026
...EXTREME HEAT WARNING HAS EXPIRED...
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM CDT FRIDAY...
* WHAT...Heat index values up to 109 degrees.
* WHERE...Portions of southwest Arkansas, southeast Oklahoma, and
northeast Texas.
* WHEN...Until 9 PM CDT Friday.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.
To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Norman OK
1204 PM CDT Thu Aug 20 2026
OKZ006>008-011>017-020>022-210715-
/O.EXB.KOUN.HT.Y.0040.260820T1800Z-260822T0200Z/
Alfalfa-Grant-Kay-Major-Garfield-Noble-Roger Mills-Dewey-Custer-
Blaine-Payne-Beckham-Washita-
Including the cities of Elk City, Wakita, Cherokee, Sayre, Seiling,
Taloga, Weatherford, Helena, Stillwater, Cordell, Watonga, Ponca
City, Enid, Perry, Cheyenne, Medford, Burns Flat, Pond Creek, Lamont,
Fairview, Vici, Hammon, Okeene, Geary, Carmen, Blackwell, Sentinel,
Leedey, and Clinton
1204 PM CDT Thu Aug 20 2026
...HEAT ADVISORY IN EFFECT UNTIL 9 PM CDT FRIDAY...
* WHAT...Heat index values up to 106 expected.
* WHERE...Portions of central, northern, northwest, and western
Oklahoma.
* WHEN...Until 9 PM CDT Friday.
* 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.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Norman OK
1204 PM CDT Thu Aug 20 2026
OKZ018-019-023-026-033>038-044-TXZ083>090-210715-
/O.EXT.KOUN.HT.Y.0040.260820T1800Z-260822T0200Z/
Kingfisher-Logan-Caddo-Lincoln-Harmon-Greer-Kiowa-Jackson-Tillman-
Comanche-Cotton-Hardeman-Foard-Wilbarger-Wichita-Knox-Baylor-Archer-
Clay-
Including the cities of Davenport, Scotland, Seymour, Hollis,
Granite, Walters, Quanah, Wellston, Temple, Munday, Chandler, Knox
City, Archer City, Hennessey, Holliday, Anadarko, Prague, Snyder,
Lakeside City, Hinton, Henrietta, Sheppard AFB, Stroud, Guthrie,
Vernon, Okarche, Crowell, Wichita Falls, Mangum, Frederick, Lawton,
Kingfisher, Meeker, Hobart, and Altus
1204 PM CDT Thu Aug 20 2026
...HEAT ADVISORY NOW IN EFFECT UNTIL 9 PM CDT FRIDAY...
* WHAT...Heat index values up to 109 expected.
* WHERE...Portions of central and southwest Oklahoma and northern
Texas.
* WHEN...Until 9 PM CDT Friday.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
&&
$$
MAD
URGENT - WEATHER MESSAGE
National Weather Service Little Rock AR
1150 AM CDT Thu Aug 20 2026
ARZ031-032-039-042>047-052>057-062>069-121-122-130-137-138-140-141-
230-237-238-240-241-340-341-210200-
/O.NEW.KLZK.HT.Y.0024.260821T1600Z-260822T0100Z/
/O.CON.KLZK.HT.Y.0023.000000T0000Z-260821T0100Z/
Conway-Faulkner-Perry-Garland-Saline-Pulaski-Lonoke-Prairie-Monroe-
Pike-Clark-Hot Spring-Grant-Jefferson-Arkansas-Dallas-Cleveland-
Lincoln-Desha-Ouachita-Calhoun-Bradley-Drew-Southern Johnson County-
Southern Pope County-Western and Northern Logan County-
Northern Scott County-Northwest Yell County-
Polk County Lower Elevations-Central and Eastern Montgomery County-
Southern and Eastern Logan County-Central and Southern Scott County-
Yell Excluding Northwest-Northern Polk County Higher Elevations-
Northern Montgomery County Higher Elevations-
Southeast Polk County Higher Elevations-
Southwest Montgomery County Higher Elevations-
Including the cities of Bryant, Sugar Grove, Russellville, Mount Ida,
Mountain Fork, Atkins, Big Fork, Norman, Fordyce, Camden, Benton,
Clarksville, Hatfield, Warren, Des Arc, Subiaco, Glenwood, Blue
Mountain, Acorn, Star City, Mena, Little Rock, Lonoke, Knoxville,
Nunley, Hector, Booneville, Coal Hill, Havana, Waveland, McGehee,
Danville, Cabot, De Valls Bluff, Murfreesboro, Thornton, Rison,
Dardanelle, Malvern, Stuttgart, Conway, Caulksville, Hartley,
Mansfield, Sheridan, Mount Magazine, London, De Witt, Dumas,
Kingsland, Gould, Hot Springs, Boles, Clarendon, Plainview,
Arkadelphia, Hazen, Brinkley, North Little Rock, Pine Bluff, Grannis,
Perryville, Y City, Ola, Morrilton, Hartman, Albert, Monticello,
Paris, Waldron, Rich Mountain, Hampton, and Story
1150 AM CDT Thu Aug 20 2026
...HEAT ADVISORY IN EFFECT FROM 11 AM TO 8 PM CDT FRIDAY...
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING...
* WHAT...For the first Heat Advisory, heat index values up to 109.
For the second Heat Advisory, heat index values up to 108 expected.
* WHERE...Portions of central, eastern, southeast, southwest, and
western Arkansas.
* WHEN...For the first Heat Advisory, until 8 PM CDT this evening.
For the second Heat Advisory, from 11 AM to 8 PM CDT Friday.
* 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.
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.
&&
$$
