Heat Advisory
URGENT - WEATHER MESSAGE
National Weather Service Jacksonville FL
705 PM EDT Thu Aug 20 2026
FLZ038-125-132-137-138-232-233-237-325-333-433-533-633-211700-
/O.EXP.KJAX.HT.Y.0025.000000T0000Z-260820T2300Z/
/O.CON.KJAX.HT.Y.0026.260821T1500Z-260821T2300Z/
Inland Flagler-Coastal Duval-Eastern Clay-Eastern Putnam-Coastal
Flagler-Western Clay-Northeast Coastal St. Johns-Western Putnam-
South Central Duval-Southeast Coastal St. Johns-Northern Inland
St. Johns-Southern Inland St. Johns-Western St. Johns-
Including the cities of Ortega, Ponte Vedra Beach, Saint Augustine
South, Anastasia, Green Cove Springs, Switzerland, Picolata, Saint
Augustine Beach, Bakersville, Fruit Cove, Doctors Inlet,
Jacksonville, Espanola, Arlington, Middleburg, Lakeside, Carraway,
Palm Coast, Saint Augustine Shore, Bostwick, Andalusia, Tallyrand,
Orange Park, Oceanway, Palm Valley, Dupont Center, Bellair,
Riverside, San Marco, Palatka, Butler Beach, Saint Augustine,
Bunnell, and Durbin
705 PM EDT Thu Aug 20 2026
...HEAT ADVISORY FOR TODAY HAS EXPIRED...
...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TO 7 PM EDT FRIDAY...
* WHAT...Heat index values up to 109 expected.
* WHERE...A portion of northeast Florida.
* WHEN...From 11 AM to 7 PM EDT 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.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Birmingham AL
445 PM CDT Thu Aug 20 2026
ALZ022-023-030>035-039>044-210500-
/O.CON.KBMX.HT.Y.0009.000000T0000Z-260822T0200Z/
Pickens-Tuscaloosa-Sumter-Greene-Hale-Perry-Bibb-Chilton-Marengo-
Dallas-Autauga-Lowndes-Elmore-Montgomery-
Including the cities of Tallassee, Fort Deposit, Carrollton,
Hayneville, Prattville, Clanton, Greensboro, Wetumpka, Linden, Selma,
Tuscaloosa, Centreville, Marion, Moundville, Livingston, Montgomery,
Eutaw, and Demopolis
445 PM CDT Thu Aug 20 2026
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM CDT FRIDAY...
* WHAT...Heat index values up to 108.
* WHERE...Autauga, Bibb, Chilton, Dallas, Elmore, Greene, Hale,
Lowndes, Marengo, Montgomery, Perry, Pickens, Sumter, and
Tuscaloosa Counties.
* WHEN...Until 9 PM CDT Friday.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors. Young children and
pets should never be left unattended in vehicles under any
circumstances.
Take extra precautions if you work or spend time outside. When
possible, reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stoke. Wear light weight and loose fitting clothing when possible and
drink plenty of water.
To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Birmingham AL
445 PM CDT Thu Aug 20 2026
ALZ011>013-015-024-025-036-210200-
/O.CON.KBMX.HT.Y.0009.000000T0000Z-260821T0200Z/
Marion-Lamar-Fayette-Walker-Jefferson-Shelby-Coosa-
Including the cities of Rockford, Jasper, Pelham, Alabaster, Hoover,
Vernon, Fayette, Columbiana, Sulligent, Hamilton, and Birmingham
445 PM CDT Thu Aug 20 2026
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING...
* WHAT...Heat index values up to 108.
* WHERE...Coosa, Fayette, Jefferson, Lamar, Marion, Shelby, and
Walker Counties.
* WHEN...Until 9 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. Young children and
pets should never be left unattended in vehicles under any
circumstances.
Take extra precautions if you work or spend time outside. When
possible, reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stoke. Wear light weight and loose fitting clothing when possible and
drink plenty of water.
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.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Birmingham AL
445 PM CDT Thu Aug 20 2026
ALZ045-046-049-050-210200-
/O.CON.KBMX.HT.Y.0010.000000T0000Z-260821T0200Z/
Macon-Bullock-Pike-Barbour-
Including the cities of Tuskegee, Troy, Union Springs, and Eufaula
445 PM CDT Thu Aug 20 2026
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING...
* WHAT...Heat index values up to 108.
* WHERE...Barbour, Bullock, Macon, and Pike Counties.
* WHEN...Until 9 PM CDT this evening.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors. Young children and
pets should never be left unattended in vehicles under any
circumstances.
Take extra precautions if you work or spend time outside. When
possible, reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stoke. Wear light weight and loose fitting clothing when possible and
drink plenty of water.
To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.
&&
$$
16
URGENT - WEATHER MESSAGE
National Weather Service Austin/San Antonio TX
401 PM CDT Thu Aug 20 2026
TXZ171>173-191>194-205>209-220>225-212100-
/O.CON.KEWX.HT.Y.0007.000000T0000Z-260824T0000Z/
Llano-Burnet-Williamson-Hays-Travis-Bastrop-Lee-Bexar-Comal-
Guadalupe-Caldwell-Fayette-Atascosa-Wilson-Karnes-Gonzales-DeWitt-
Lavaca-
Including the cities of Pleasanton, La Grange, Gonzales, Bastrop,
Lockhart, Hallettsville, Austin, Burnet, Giddings, Floresville,
Karnes City, New Braunfels, San Antonio, Seguin, Llano, Cuero, San
Marcos, and Georgetown
401 PM CDT Thu Aug 20 2026
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT SUNDAY...
* WHAT...Temperatures up to 104 and heat index values up to 112
expected.
* WHERE...The northern Hill Country, I-35 Corridor, and Coastal
Plains.
* WHEN...Until 7 PM CDT Sunday.
* 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.
&&
$$
Tran
URGENT - WEATHER MESSAGE
National Weather Service San Diego CA
141 PM PDT Thu Aug 20 2026
CAZ048-210300-
/O.CON.KSGX.HT.Y.0009.000000T0000Z-260821T0300Z/
San Bernardino and Riverside County Valleys-The Inland Empire-
Including the cities of Riverside, Ontario, San Bernardino,
Rancho Cucamonga, Moreno Valley, Fontana, and Corona
141 PM PDT Thu Aug 20 2026
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING...
* WHAT...Temperatures up to 105.
* WHERE...San Bernardino and Riverside County Valleys-The Inland
Empire.
* WHEN...Until 8 PM PDT this evening.
* IMPACTS...Hot temperatures may cause heat illnesses.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
&&
$$
SS
URGENT - WEATHER MESSAGE
National Weather Service Boise ID
216 PM MDT Thu Aug 20 2026
IDZ012-014-016-033-ORZ064-212115-
/O.CON.KBOI.HT.Y.0007.000000T0000Z-260822T0300Z/
Lower Treasure Valley-Upper Treasure Valley-Western Magic Valley-
Upper Weiser River-Oregon Lower Treasure Valley-
Including the cities of Nampa, Boise, Indian Valley, Council,
Glendale, Cambridge, Ontario, Caldwell, Nyssa, Goodrich, Twin Falls,
Fruitvale, and Mesa
216 PM MDT Thu Aug 20 2026 /116 PM PDT Thu Aug 20 2026/
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM MDT /8 PM PDT/
FRIDAY...
* WHAT...High temperatures 98 to 104 degrees both today and Friday.
* WHERE...Portions of south central and southwest Idaho and southeast
Oregon.
* WHEN...Until 9 PM MDT /8 PM PDT/ Friday.
* IMPACTS...Hot temperatures 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.
&&
$$
LC
URGENT - WEATHER MESSAGE
National Weather Service Pocatello ID
147 PM MDT Thu Aug 20 2026
IDZ051-054>057-075-210400-
/O.CON.KPIH.HT.Y.0006.000000T0000Z-260821T0400Z/
/O.CON.KPIH.HT.Y.0007.260821T1800Z-260822T0400Z/
Shoshone/Lava Beds-Lower Snake River Plain-Eastern Magic Valley-
Southern Hills/Albion Mountains-Raft River Region-Wood River
Foothills-
Including the cities of Albion, Picabo, Bellevue, Heyburn, Holbrook,
Shelley, Rockland, Fort Hall, Shoshone, American Falls, Hailey,
Rupert, Richfield, Oakley, Pocatello, Almo, Blackfoot, Malta, Burley,
and Carey
147 PM MDT Thu Aug 20 2026
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM MDT THIS EVENING...
...HEAT ADVISORY REMAINS IN EFFECT FROM NOON TO 10 PM MDT FRIDAY...
* WHAT...Widespread temperatures ranging 94 to 100 degrees.
* WHERE...Wood River Foothills, Eastern Magic Valley, Shoshone/Lava
Beds, Lower Snake River Plain, Raft River Region, and Southern
Hills/Albion Mountains.
* WHEN...For the first Heat Advisory, until 10 PM MDT this evening.
For the second Heat Advisory, from noon to 10 PM MDT Friday.
* IMPACTS...Hot temperatures may cause heat illnesses.
$$
URGENT - WEATHER MESSAGE
National Weather Service Pocatello ID
147 PM MDT Thu Aug 20 2026
IDZ052-053-058-059-210400-
/O.CON.KPIH.HT.Y.0007.260821T1800Z-260822T0400Z/
Arco/Mud Lake Desert-Upper Snake River Plain-Marsh and Arbon
Highlands-Franklin/Eastern Oneida Region-
Including the cities of McCammon, Idaho Falls, Preston, Mud Lake,
Rexburg, Downey, St. Anthony, Inkom, Thatcher, Craters of the
Moon NM, INL, Lava Hot Springs, and Malad
147 PM MDT Thu Aug 20 2026
...HEAT ADVISORY REMAINS IN EFFECT FROM NOON TO 10 PM MDT FRIDAY...
* WHAT...Widespread temperatures ranging 93 to 100 degrees.
* WHERE...Arco/Mud Lake Desert, Franklin/Eastern Oneida Region, Marsh
and Arbon Highlands, and Upper Snake River Plain.
* WHEN...From noon to 10 PM MDT Friday.
* IMPACTS...Hot temperatures may cause heat illnesses.
$$
Visit weather.gov/pocatello for more information.
McKaughan
URGENT - WEATHER MESSAGE
National Weather Service Houston/Galveston TX
130 PM CDT Thu Aug 20 2026
TXZ163-164-176>179-195>200-210>214-226-227-235>238-300-313-335>338-
436>439-210230-
/O.CON.KHGX.HT.Y.0008.000000T0000Z-260822T0000Z/
Houston-Trinity-Madison-Walker-San Jacinto-Polk-Burleson-Brazos-
Washington-Grimes-Montgomery-Northern Liberty-Colorado-Austin-
Waller-Inland Harris-Chambers-Wharton-Fort Bend-Inland Jackson-
Inland Matagorda-Inland Brazoria-Inland Galveston-Southern
Liberty-Coastal Harris-Coastal Jackson-Coastal Matagorda-Coastal
Brazoria-Coastal Galveston-Matagorda Islands-Brazoria Islands-
Galveston Island-Bolivar Peninsula-
Including the cities of Dayton, Texas City, Pearland, Huntsville,
Coldspring, Sealy, Liberty, The Woodlands, First Colony, Wharton,
Bellville, Alvin, Navasota, Trinity, Groveton, Shepherd, Eagle Lake,
Mission Bend, Angleton, Pasadena, Baytown, Corrigan, Mont
Belvieu, Cleveland, Old River-Winfree, Crockett, Bryan,
Dickinson, Conroe, Livingston, Edna, Devers, Pecan Grove, Stowell,
Columbus, Hempstead, Missouri City, Waller, Friendswood, Houston,
Weimar, Somerville, Madisonville, Clute, Ganado, Winnie, Sugar Land,
Freeport, Surfside Beach, Caldwell, Prairie View, Anahuac,
Brookshire, Bay City, League City, La Marque, El Campo, College
Station, Rosenberg, Galveston, Lake Jackson, Brenham, and Palacios
130 PM CDT Thu Aug 20 2026
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT FRIDAY...
* WHAT...Peak heat index values between 106-112F.
* WHERE...Portions of south central and southeast Texas.
* WHEN...Until 7 PM CDT Friday.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
* ADDITIONAL DETAILS...This advisory will likely need to be extended
into the weekend.
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 Tallahassee FL
Issued by National Weather Service Mobile AL
221 PM EDT Thu Aug 20 2026
ALZ065>069-FLZ007>019-027>029-034-108-112-114-115-118-127-128-134-
326-426-GAZ155>161-210230-
/O.NEW.KTAE.HT.Y.0024.260821T1500Z-260822T0000Z/
/O.CON.KTAE.HT.Y.0023.000000T0000Z-260821T0000Z/
Coffee-Dale-Henry-Geneva-Houston-North Walton-Central Walton-
Holmes-Washington-Jackson-Inland Bay-Calhoun-Inland Gulf-Inland
Franklin-Gadsden-Leon-Inland Jefferson-Madison-Inland Wakulla-
Inland Taylor-Lafayette-Inland Dixie-South Walton-Coastal Bay-
Coastal Gulf-Coastal Franklin-Coastal Jefferson-Coastal Wakulla-
Coastal Taylor-Coastal Dixie-Northern Liberty-Southern Liberty-
Seminole-Decatur-Grady-Thomas-Brooks-Lowndes-Lanier-
Including the cities of Blackwell Field A/P, De Funiak Spring
Airport, Blue Springs, Valdosta Regional Airport, Hines, Five Points,
Fort Gadsden, Jonesboro, Quitman, Valdosta, Buckville, Center Ridge,
Asbury, Hopewell, Geneva, Cross City Airport, Sumatra, Alma,
Turquoise Beach, Bunker, Davis Park, Wetumpka,
Ozark, New Hope, Browntown, Crystal Lake, Headland Municipal A/P,
Geneva Municipal A/P, Tallahassee, Abe Springs, Sweetwater,
Lakeland, Marysville, Buck Siding, Beamon, Donaldsonville A/P,
Grooverville, Pinetta, Callaway, Courthouse, Pleasant Ridge,
Brooks Co A/P, Econfina, Lynn Haven, Enterprise Municipal A/P,
Chipley, Dalkeith, De Funiak Springs, Dill, Cottonwood, Capitola,
Freeport, Point Washington, Hilliardville, Tilton, Dothan, Dills,
Festus, Blountstown, Battens Crossroads, Little Hope, Nixon, Beacon
Hill, Simsville, Hanover, Capel, Lawrenceville, Cabbage Grove,
Chattahoochee, Santa Rosa Beach, Oak Grove, Orange Hill, Killearn
Estates, Hardin Heights, Athena, Jena, Sandestin, Moncrief, Mabson,
Elpino, Poplar Head, Honeyville, Santa Clara, Suwannee, Thomasville,
Cobb Crossroads, Wilma, Vicksburg, Cherry Lake, Panacea, Riverturn,
Quincy Airport, Southport, Scotts Ferry, High Bluff, Boyd,
Monticello, Malone, Drifton, Ashford,
Bethel, Bainbridge, Overstreet, Wakulla Springs, Grady Co A/P,
Horseshoe Beach, Empress, Saint Joe Beach, Hays Place, Barker Store,
Medart, Bucell Junction, Magnolia Beach, Panama City, Odena, Day,
Littman, Cooks Hammock, Browns Crossroads, Eucheeanna, Glendale,
Lovett, Yellow Jacket, Creels, Abbeville, Madison, Lynn, Perry,
Donalsonville, Maclay State Gardens, Ewell, Sneads, Wewahitchka, Fish
Creek, Frink, Morgan Place, Decatur Co
A/P, Hartford, Bradfordville, Buckhorn, West Bainbridge, Port St.
Joe, Port Leon, Twin Pole, Midway, Quincy, Bennett, Fadette, Mayo,
Metcalf, Adams Beach, Jarrott, Keyton, Lewis, Beachton, Holmes County
Airport, Nankin, Killearn Lakes, Hanson, Dillon, Dixie, Durham,
Bonifay, Chaires Crossroads, Clarksville,
Abbeville Municipal A/P, Leonia, Casa Blanco, Apalachicola,
Cluster Springs, Pasco, Hacoda, Cedar Island, Cairo, Fenholloway,
Fort Rucker, Pine Park, Ganer, Old Town, Portland, Central City,
Fairchild, Howard Creek, Marianna, Screamer, Argyle, White City,
Teeterville, Beverly, Chipley Municipal Airport, Cross City,
Sopchoppy, Youngstown, Capps, Enterprise, Headland, Graceville,
Steinham Store, Richter Crossroads, Vilas, Kern, Seminole State Park,
Daleville, Bay City, Saint Marks, Dekle Beach, Apalachicola Airport,
Shired Island, Blackwood, Carbur, Chaires, Logan Field
Municipal A/P, Alpine Heights, Ausmac, and Howell Place
221 PM EDT Thu Aug 20 2026 /121 PM CDT Thu Aug 20 2026/
...HEAT ADVISORY IN EFFECT FROM 11 AM EDT /10 AM CDT/ TO 8 PM EDT /7
PM CDT/ FRIDAY...
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT /7 PM CDT/ THIS
EVENING...
* WHAT...For the first Heat Advisory, heat index values up to 112.
For the second Heat Advisory, heat index values up to 112 expected.
* WHERE...Portions of southeast Alabama, Big Bend and Panhandle
Florida, and south central and southwest Georgia.
* WHEN...For the first Heat Advisory, until 8 PM EDT /7 PM CDT/ this
evening. For the second Heat Advisory, from 11 AM EDT /10 AM CDT/
to 8 PM EDT /7 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.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Lake Charles LA
1254 PM CDT Thu Aug 20 2026
LAZ030-031-044-045-055-073-074-141>143-152>154-241>243-252>254-
TXZ201-261-262-515-516-615-616-210900-
/O.NEW.KLCH.HT.Y.0018.260821T1500Z-260822T0100Z/
/O.CON.KLCH.HT.Y.0017.000000T0000Z-260821T0100Z/
Beauregard-Allen-Lafayette-Upper St. Martin-Lower St. Martin-West
Cameron-East Cameron-Northern Calcasieu-Northern Jefferson Davis-
Northern Acadia-Upper Vermilion-Upper Iberia-Upper St. Mary-
Southern Calcasieu-Southern Jefferson Davis-Southern Acadia-Lower
Vermilion-Lower Iberia-Lower St. Mary-Hardin-Southern Jasper-
Southern Newton-Upper Jefferson-Northern Orange-Lower Jefferson-
Southern Orange-
Including the cities of Crowley, Cade, Bell City, Lake Charles,
Stephensville, Breaux Bridge, Elton, Iowa, Sea Rim State Park,
Cypremort Point, Kaplan, Klondike, Iota, Morse, Centerville,
Sulphur, Creole, Kinder, Rayne, Lafayette, Meaux, St.
Martinville, Mauriceville, Gueydan, Buna, Orange, De Quincy,
Patterson, Jeanerette, Moss Bluff, Sabine Pass, Grand Chenier, Morgan
City, Maurice, Church Point, Fields, Oretta, Bayou Vista, Lake
Arthur, Welsh, Vinton, Abbeville, Gist, Deweyville, Oakdale, Fenton,
Intracoastal City, Silsbee, China, De Ridder, Hathaway, Forked
Island, Nederland, Westlake, Jennings, Branch, Grand Lake, Hackberry,
Topsy, Bridge City, Beaumont, Rutherford Beach, Avery Island,
Carlyss, Evadale, Port Arthur, Vidor, Bundick Lake, New Iberia,
Hayes, Berwick, Cameron, Franklin, Johnson Bayou, Burns Point, and
Lumberton
1254 PM CDT Thu Aug 20 2026
...HEAT ADVISORY IN EFFECT FROM 10 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 111.
For the second Heat Advisory, heat index values up to 112 expected,
as well as temperatures up to 100 to 103.
* WHERE...Portions of south central and southwest Louisiana and
southeast Texas.
* WHEN...For the first Heat Advisory, until 8 PM CDT this evening.
For the second Heat Advisory, from 10 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.
Monitor the latest forecasts and warnings for updates.
&&
$$
TPS/MKC
URGENT - WEATHER MESSAGE
National Weather Service Lake Charles LA
1254 PM CDT Thu Aug 20 2026
LAZ027>029-032-033-TXZ180-259-260-210900-
/O.NEW.KLCH.XH.W.0002.260821T1500Z-260822T0100Z/
/O.CON.KLCH.HT.Y.0017.000000T0000Z-260821T0100Z/
Vernon-Rapides-Avoyelles-Evangeline-St. Landry-Tyler-Northern
Jasper-Northern Newton-
Including the cities of Roganville, Burkeville, Slagle, Mt.
Union, Newton, Farrsville, Ivanhoe, Reddell, Bleakwood, Town Bluff,
Warren, Lawtell, Mansura, Fort Polk, Leesville, Beaver, Cottonport,
Pineville, Opelousas, Effie, Mamou, Holly Springs, Eunice,
Alexandria, Simmesport, Jasper, Kirbyville, Jamestown, Magnolia
Springs, Pickering, Fred, Bunkie, Woodville, Hillister,
Call, Ville Platte, Spurger, Marksville, Wiergate, and St. Landry
1254 PM CDT Thu Aug 20 2026
...EXTREME HEAT WARNING IN EFFECT FROM 10 AM TO 8 PM CDT FRIDAY...
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING...
* WHAT...For the Heat Advisory, heat index values up to 111. For the
Extreme Heat Warning, dangerously hot conditions with heat index
values up to 115 expected, as well as temperatures up to 103 to
105.
* WHERE...In Louisiana, Avoyelles, Evangeline, Rapides, St. Landry,
and Vernon Parishes. In Texas, Northern Jasper, Northern Newton,
and Tyler Counties.
* WHEN...For the Heat Advisory, until 8 PM CDT this evening. For the
Extreme Heat Warning, from 10 AM to 8 PM CDT Friday.
* 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.
Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.
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.
Monitor the latest forecasts and warnings for updates.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Jackson MS
1246 PM CDT Thu Aug 20 2026
LAZ007>009-015-016-023>026-MSZ040>043-047>049-053>055-059>064-072-
210200-
/O.NEW.KJAN.XH.W.0009.260821T1600Z-260822T0100Z/
/O.CON.KJAN.HT.Y.0022.000000T0000Z-260821T0100Z/
Morehouse-West Carroll-East Carroll-Richland-Madison LA-Franklin
LA-Catahoula-Tensas-Concordia-Issaquena-Sharkey-Yazoo-Madison MS-
Warren-Hinds-Rankin-Claiborne-Copiah-Simpson-Jefferson-Adams-
Franklin MS-Lincoln-Lawrence-Jefferson Davis-Marion-
Including the cities of Wesson, Oak Grove, Waterproof, New
Hebron, Richland, St. Joseph, Jackson, Pearl, Natchez, Bassfield,
Lake Providence, Harrisonburg, Magee, Madison, Winnsboro, Tallulah,
Anguilla, Hazlehurst, Crystal Springs, Bastrop, Fayette, Yazoo City,
Jonesville, Newellton, Rolling Fork, Brandon, Canton, Brookhaven,
Monticello, West Ferriday, Prentiss, Bude, Mayersville, Ferriday,
Port Gibson, Mendenhall, Epps, Delhi, Ridgeland, Roxie, Rayville,
Vidalia, Columbia, Vicksburg, and Meadville
1246 PM CDT Thu Aug 20 2026
...EXTREME HEAT WARNING IN EFFECT FROM 11 AM TO 8 PM CDT FRIDAY...
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING...
* WHAT...For the Heat Advisory, heat index values up to 110. For the
Extreme Heat Warning, dangerously hot conditions with heat index
values up to 115 expected.
* WHERE...Portions of northeast Louisiana and central, south central,
southwest, and west central Mississippi.
* WHEN...For the Heat Advisory, until 8 PM CDT this evening. For the
Extreme Heat Warning, from 11 AM to 8 PM CDT Friday.
* IMPACTS...Hot temperatures and high humidity may cause heat related
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.
Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.
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.
Monitor the latest forecasts and warnings for updates.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Jackson MS
1246 PM CDT Thu Aug 20 2026
ARZ074-075-MSZ018-019-025>039-044>046-050>052-056>058-065-066-073-
074-210200-
/O.NEW.KJAN.HT.Y.0023.260821T1600Z-260822T0100Z/
/O.CON.KJAN.HT.Y.0022.000000T0000Z-260821T0100Z/
Ashley-Chicot-Bolivar-Sunflower-Leflore-Grenada-Carroll-Montgomery-
Webster-Clay-Lowndes-Choctaw-Oktibbeha-Washington-Humphreys-Holmes-
Attala-Winston-Noxubee-Leake-Neshoba-Kemper-Scott-Newton-Lauderdale-
Smith-Jasper-Clarke-Covington-Jones-Lamar-Forrest-
Including the cities of Morton, Cleveland, Durant, West Hattiesburg,
Laurel, Decatur, Crossett, Lake Village, North Crossett, Meridian,
Starkville, Eudora, Kosciusko, North Carrollton, Scooba, Indianola,
Brooksville, De Kalb, Greenville, Eupora, Raleigh, Columbus, Shubuta,
Carrollton, Vaiden, Pearl River, Belzoni, Winona, Louisville,
Heidelberg, Hattiesburg, Tchula, Lexington, Ackerman, Mathiston,
Macon, Quitman, Purvis, Mount Olive, Weir, Stonewall, Isola,
Carthage, Philadelphia, Collins, Lumberton, Ruleville, Union,
Dermott, Grenada, Pickens, Taylorsville, Conehatta, West Point, West
Crossett, Greenwood, Forest, Bay Springs, Goodman, Hamburg, and
Newton
1246 PM 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...Heat index values up to 110 degrees expected.
* WHERE...Portions of southeast Arkansas, northeast Louisiana, and
much of eastern Mississippi.
* 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 related
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.
Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.
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.
Monitor the latest forecasts and warnings for updates.
&&
$$
EC
URGENT - WEATHER MESSAGE
National Weather Service Memphis TN
1236 PM CDT Thu Aug 20 2026
MSZ021>024-210145-
/O.EXA.KMEG.HT.Y.0024.260821T1600Z-260822T0100Z/
/O.CON.KMEG.HT.Y.0023.000000T0000Z-260821T0100Z/
Yalobusha-Calhoun-Chickasaw-Monroe-
Including the cities of Calhoun City, Coffeeville, Amory, Water
Valley, Okolona, Houston, Aberdeen, and Bruce
1236 PM CDT Thu Aug 20 2026
...HEAT ADVISORY IN EFFECT FROM 11 AM TO 8 PM CDT FRIDAY...
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING...
* WHAT...For the first Heat Advisory, heat index values up to 109.
For the second Heat Advisory, heat index values up to 106 expected.
* WHERE...Calhoun, Chickasaw, Monroe, and Yalobusha Counties.
* WHEN...For the first Heat Advisory, until 8 PM CDT this evening.
For the second Heat Advisory, from 11 AM to 8 PM CDT Friday.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Memphis TN
1236 PM CDT Thu Aug 20 2026
ARZ049-058-MSZ007-010-011-020-210145-
/O.CON.KMEG.HT.Y.0023.000000T0000Z-260821T0100Z/
/O.CON.KMEG.HT.Y.0024.260821T1600Z-260822T0100Z/
Lee AR-Phillips-Tunica-Coahoma-Quitman-Tallahatchie-
Including the cities of Tunica, Helena-West Helena, Marks,
Marianna, Clarksdale, and Charleston
1236 PM CDT Thu Aug 20 2026
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING...
...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TO 8 PM CDT FRIDAY...
* WHAT...For the first Heat Advisory, heat index values up to 109.
For the second Heat Advisory, heat index values up to 110 expected.
* WHERE...In Arkansas, Lee AR and Phillips Counties. In Mississippi,
Coahoma, Quitman, Tallahatchie, and Tunica Counties.
* 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.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Memphis TN
1236 PM CDT Thu Aug 20 2026
ARZ048-MSZ008-012>017-210100-
/O.CON.KMEG.HT.Y.0023.000000T0000Z-260821T0100Z/
St. Francis-Tate-Panola-Lafayette-Union-Pontotoc-Lee MS-Itawamba-
Including the cities of Forrest City, Senatobia, Pontotoc,
Batesville, Oxford, New Albany, Tupelo, and Fulton
1236 PM CDT Thu Aug 20 2026
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING...
* WHAT...Heat index values up to 107.
* WHERE...In Arkansas, St. Francis County. In Mississippi, Itawamba,
Lafayette, Lee MS, Panola, Pontotoc, Tate, and Union Counties.
* WHEN...Until 8 PM CDT this evening.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
&&
$$
DNM
URGENT - WEATHER MESSAGE
National Weather Service Amarillo TX
1233 PM CDT Thu Aug 20 2026
TXZ008>010-014-015-018-019-210600-
/O.NEW.KAMA.HT.Y.0041.260821T1700Z-260822T0200Z/
Hutchinson-Roberts-Hemphill-Gray-Wheeler-Armstrong-Donley-
Including the cities of Kingsmill, Shamrock, Lake Marvin, Glazier,
Claude, Goodnight, Washburn, Clarendon, Pampa, Canadian, Twitty,
Miami, Codman, Briscoe, Lora, Lela, Wayside, Wheeler, and Borger
1233 PM CDT Thu Aug 20 2026
...HEAT ADVISORY IN EFFECT FROM NOON TO 9 PM CDT FRIDAY...
* WHAT...Temperatures up to 105 expected.
* WHERE...Armstrong, Donley, Gray, Hemphill, Hutchinson, Roberts, and
Wheeler Counties.
* WHEN...From noon to 9 PM CDT Friday.
* IMPACTS...Hot temperatures 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.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Amarillo TX
1233 PM CDT Thu Aug 20 2026
TXZ020-317-210600-
/O.EXT.KAMA.HT.Y.0040.000000T0000Z-260822T0200Z/
Collingsworth-Palo Duro Canyon-
Including the cities of Wellington, Palo Duro Canyon State Park,
Lutie, Dozier, and Samnorwood
1233 PM CDT Thu Aug 20 2026
...HEAT ADVISORY NOW IN EFFECT UNTIL 9 PM CDT FRIDAY...
* WHAT...Temperatures up to 105 to 107.
* WHERE...Collingsworth and Palo Duro Canyon Counties.
* WHEN...Until 9 PM CDT Friday.
* IMPACTS...Hot temperatures may cause heat illnesses.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.
&&
$$
MJG
URGENT - WEATHER MESSAGE
National Weather Service Pendleton OR
1030 AM PDT Thu Aug 20 2026
ORZ041-044-049-505-507-508-510-511-WAZ024-026>029-210600-
/O.NEW.KPDT.HT.Y.0006.260820T1800Z-260822T0500Z/
Eastern Columbia River Gorge of Oregon-Lower Columbia Basin of
Oregon-Grande Ronde Valley-John Day Basin-Foothills of the
Northern Blue Mountains of Oregon-Foothills of the Southern Blue
Mountains of Oregon-North Central Oregon-Central Oregon-Eastern
Columbia River Gorge of Washington-Kittitas Valley-Yakima Valley-
Lower Columbia Basin of Washington-Foothills of the Blue
Mountains of Washington-
Including the cities of Sunnyside, Thorp, Athena, Dayville, Maupin,
Bend, Pendleton, Moro, Condon, Naches, Madras, White
Salmon, Tri-Cities, Fossil, Yakima, Cove, Waitsburg, Arlington,
Union, John Day, Ione, Monument, Redmond, Ellensburg, La Grande,
Elgin, Mitchell, Toppenish, Hermiston, Dufur, Walla Walla, Prosser,
Spray, Connell, Prineville, The Dalles, Boardman, Pilot Rock, Dayton,
and Heppner
1030 AM PDT Thu Aug 20 2026
...HEAT ADVISORY IN EFFECT UNTIL 10 PM PDT FRIDAY...
* WHAT...Hot conditions with afternoon high temperatures of 95 to 105
degrees expected. This will pose a moderate to major risk of
heat-related illness.
* WHERE...Portions of central, north central, and northeast Oregon
and central, south central, and southeast Washington.
* WHEN...Until 10 PM PDT Friday.
* IMPACTS...Hot temperatures 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.
For sheltering information and other human services in your area,
dial 2 1 1 during business hours or visit 211info.org for Oregon or
wa211.org for Washington anytime.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Pendleton OR
1030 AM PDT Thu Aug 20 2026
ORZ050-502-503-506-WAZ030-521-523-210600-
/O.NEW.KPDT.HT.Y.0006.260820T1800Z-260822T0500Z/
Wallowa County-Northern Blue Mountains of Oregon-Southern Blue
Mountains of Oregon-Ochoco-John Day Highlands-Northwest Blue
Mountains-Simcoe Highlands-Lower Slopes of the Eastern Washington
Cascades Crest-
Including the cities of Tollgate, Seneca, Enterprise, Joseph, Long
Creek, Appleton, Cliffdell, Prairie City, Bickleton, North Powder,
Ski Bluewood Resort, Meacham, Brothers, Goldendale, Cle Elum,
Wallowa, Paulina, and Ukiah
1030 AM PDT Thu Aug 20 2026
...HEAT ADVISORY IN EFFECT UNTIL 10 PM PDT FRIDAY...
* WHAT...Hot conditions with afternoon high temperatures of 90 to 100
degrees expected, except 100 to 110 in Hells Canyon. This will pose
a moderate to major risk of heat-related illness.
* WHERE...Blue Mountains of Oregon and Washington, Wallowa County,
Ochoco-John Day Highlands, Simcoe Highlands, and Lower Slopes of
the Eastern Washington Cascades Crest.
* WHEN...Until 10 PM PDT Friday.
* IMPACTS...Hot temperatures may cause heat illnesses.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.
For sheltering information and other human services in your area,
dial 2 1 1 during business hours or visit 211info.org for Oregon or
wa211.org for Washington anytime.
&&
$$
PDT
URGENT - WEATHER MESSAGE
National Weather Service Spokane WA
1028 AM PDT Thu Aug 20 2026
IDZ001>004-026-027-WAZ031>038-041-043-044-047-049-211000-
/O.NEW.KOTX.HT.Y.0004.260821T1800Z-260822T0500Z/
Northern Panhandle-Coeur d`Alene Area-Idaho Palouse-Central
Panhandle Mountains-Lewiston Area-Lewis and Southern Nez Perce
Counties-Northeast Blue Mountains-Lower Garfield and Asotin
Counties-Washington Palouse-Moses Lake Area-Upper Columbia Basin-
Spokane Area-Northeast Mountains-Okanogan Highlands-Wenatchee
Area-Okanogan Valley-Waterville Plateau-Central Chelan County-
Western Okanogan County-
Including the cities of Athol, Ritzville, Springdale-Hunters
Road, Fernwood, Clark Fork, Wauconda, Kellogg, Oakesdale,
Disautel Pass, La Crosse, Colville, Brewster, Cloverland Road,
Odessa, Hayden, Eastport, Waterville, Mazama, Rockford, Coeur
d`Alene, Ephrata, Twisp, Mountain Road, Tiger, Pomeroy,
Mansfield, Potlatch, Post Falls, Republic, Fruitland, Harrington,
Winchester, Nespelem, Pinehurst, Metaline, Chelan, Osburn,
Bonners Ferry, Winthrop, Nezperce, Quincy, Moses Lake, Peck,
Genesee, Boulder Creek Road, Ione, Highway 20 Wauconda Summit,
Priest River, Kettle Falls, Chewelah, Conconully, Methow, Badger
Mountain Road, Culdesac, Soldiers Meadow Road, Lapwai, Sandpoint,
Lookout Pass, Rosalia, Flowery Trail Road, Fourth Of July Pass,
Mullan, Cashmere, Tonasket, Okanogan, Metaline Falls, Cheney,
Creston, Airway Heights, Deer Park, Bridgeport, Alpowa Summit,
Othello, Wenatchee, Lewiston Grade, Downtown Spokane, Peola,
Chesaw Road, Schweitzer Mountain Road, Entiat, Number 1 Canyon,
Spokane Valley, Omak, Pangborn Airport, Oroville, Colfax, Number
2 Canyon, Fairfield, Orin-Rice Road, Kamiah, Anatone, Inchelium,
Loup Loup Pass, Sherman Pass, Leavenworth, Tekoa, Davenport,
Craigmont, Wilbur, Plummer, Moscow, Northport, Wallace, Dobson
Pass, Plain, Lewiston, Coulee City, St. Maries, Uniontown,
Clarkston, Grand Coulee, Pullman, Worley, Gifford, and Newport
1028 AM PDT Thu Aug 20 2026
...HEAT ADVISORY IN EFFECT FROM 11 AM TO 10 PM PDT FRIDAY...
* WHAT...High temperatures in the mid to high 90s resulting in Major
HeatRisk.
* WHERE...Much of the Inland Northwest.
* WHEN...From 11 AM to 10 PM PDT Friday.
* IMPACTS...Hot temperatures may cause heat illnesses.
* ADDITIONAL DETAILS...Low temperatures in the 60s and 70s will
provide little overnight relief.
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.
&&
$$
OTX
URGENT - WEATHER MESSAGE
National Weather Service Tulsa OK
1212 PM CDT Thu Aug 20 2026
ARZ129-219-220-229-OKZ065-066-070-071-073>075-176-272-276-376-210600-
/O.NEW.KTSA.HT.Y.0041.260821T1700Z-260822T0100Z/
/O.CON.KTSA.HT.Y.0040.260820T1800Z-260821T0100Z/
North and Central Sebastian-Southern Crawford-Central and
Southern Franklin-Southern Sebastian-Okfuskee-Okmulgee-Muskogee-
McIntosh-Pittsburg-Haskell-Latimer-Northern Le Flore-Central and
Southern Sequoyah-Central Le Flore-Southern Le Flore-
Including the cities of Hartford, Muskogee, Mansfield, Jethro,
Checotah, Fort Smith, Patterson, Arkoma, Okemah, McAlester, Liberty,
Huntington, Poteau, Ozark, Spiro, Panama, Talihina, Sallisaw, Lonelm,
Pocola, Cravens, Watalula, Okmulgee, Stigler, Van Buren, Wilburton,
Charleston, and Cecil
1212 PM CDT Thu Aug 20 2026
...HEAT ADVISORY IN EFFECT FROM NOON TO 8 PM CDT FRIDAY...
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING...
* WHAT...Heat index values up to 109 expected.
* WHERE...Portions of northwest and west central Arkansas and east
central, northeast, and southeast Oklahoma.
* WHEN...For the first Heat Advisory, until 8 PM CDT this evening.
For the second Heat Advisory, from noon to 8 PM CDT Friday.
* IMPACTS...Heat related illnesses are possible especially impacting
those not acclimated to the conditions or those performing
strenuous activities.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Tulsa OK
1212 PM CDT Thu Aug 20 2026
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.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Tulsa OK
1212 PM CDT Thu Aug 20 2026
OKZ055>057-154-254-210100-
/O.EXA.KTSA.HT.Y.0040.260820T1800Z-260821T0100Z/
Washington OK-Nowata-Craig-Western Osage-Northeast Osage-
Including the cities of Fairfax, Shidler, Nowata, Pawhuska, Vinita,
and Bartlesville
1212 PM CDT Thu Aug 20 2026
...HEAT ADVISORY IN EFFECT UNTIL 8 PM CDT THIS EVENING...
* WHAT...Heat index values up to 106 expected.
* WHERE...Craig, Northeast Osage, Nowata, Washington OK, and Western
Osage Counties.
* WHEN...Until 8 PM CDT this evening.
* IMPACTS...Heat related illnesses are possible especially impacting
those not acclimated to the conditions or those performing
strenuous activities.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.
&&
$$
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.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Norman OK
1204 PM CDT Thu Aug 20 2026
OKZ006>008-011>017-020>022-210715-
/O.EXB.KOUN.HT.Y.0040.260820T1800Z-260822T0200Z/
Alfalfa-Grant-Kay-Major-Garfield-Noble-Roger Mills-Dewey-Custer-
Blaine-Payne-Beckham-Washita-
Including the cities of Elk City, Wakita, Cherokee, Sayre, Seiling,
Taloga, Weatherford, Helena, Stillwater, Cordell, Watonga, Ponca
City, Enid, Perry, Cheyenne, Medford, Burns Flat, Pond Creek, Lamont,
Fairview, Vici, Hammon, Okeene, Geary, Carmen, Blackwell, Sentinel,
Leedey, and Clinton
1204 PM CDT Thu Aug 20 2026
...HEAT ADVISORY IN EFFECT UNTIL 9 PM CDT FRIDAY...
* WHAT...Heat index values up to 106 expected.
* WHERE...Portions of central, northern, northwest, and western
Oklahoma.
* WHEN...Until 9 PM CDT Friday.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
&&
$$
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.
&&
$$
MAD
URGENT - WEATHER MESSAGE
National Weather Service Fort Worth TX
1153 AM CDT Thu Aug 20 2026
TXZ144-145-147-159>162-175-210600-
/O.EXT.KFWD.HT.Y.0026.000000T0000Z-260822T0100Z/
Bosque-Hill-Freestone-McLennan-Falls-Limestone-Leon-Robertson-
Including the cities of Calvert, Wortham, Meridian, Normangee,
Franklin, Groesbeck, Fairfield, Hillsboro, Hearne, Clifton, Waco,
Jewett, Centerville, Oakwood, Mexia, Marlin, Teague, Valley Mills,
and Buffalo
1153 AM CDT Thu Aug 20 2026
...HEAT ADVISORY NOW IN EFFECT UNTIL 8 PM CDT FRIDAY...
* WHAT...Heat index values up to 109.
* WHERE...Bosque, Falls, Freestone, Hill, Limestone, McLennan, Leon,
and Robertson Counties.
* WHEN...Until 8 PM CDT Friday.
* IMPACTS...Hot temperatures and high humidity will increase the risk
for heat-related illnesses to occur, particularly for those working
or participating in outdoor activities.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Take extra precautions when outside by staying hydrated, wearing
lightweight and loose fitting clothing, and limiting strenuous
activities to the early morning or evening. Check up on relatives and
neighbors. Never leave young children or pets in an enclosed vehicle,
even for a short time, as temperatures can quickly rise to
life-threatening levels.
Know the signs and symptoms of heat exhaustion and heat stroke. To
reduce risk when outdoors, the occupational safety and health
administration recommends scheduling frequent rest breaks in shaded
or air conditioned environments. Anyone overcome by heat should be
moved to a cool and shaded location. Heat stroke is an emergency!
Call 911 ASAP if you or someone you know is exhibiting signs of heat
stroke.
&&
$$
Barnes
URGENT - WEATHER MESSAGE
National Weather Service Fort Worth TX
1153 AM CDT Thu Aug 20 2026
TXZ135-146-148-210600-
/O.EXT.KFWD.HT.Y.0025.000000T0000Z-260822T0100Z/
Henderson-Navarro-Anderson-
Including the cities of Corsicana, Gun Barrel City, Athens, and
Palestine
1153 AM CDT Thu Aug 20 2026
...HEAT ADVISORY NOW IN EFFECT UNTIL 8 PM CDT FRIDAY...
* WHAT...Heat index values up to 109.
* WHERE...Navarro, Anderson, and Henderson Counties.
* WHEN...Until 8 PM CDT Friday.
* IMPACTS...Hot temperatures and high humidity will increase the risk
for heat-related illnesses to occur, particularly for those working
or participating in outdoor activities.
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.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Fort Worth TX
1153 AM CDT Thu Aug 20 2026
TXZ129-130-141>143-156>158-174-210600-
/O.EXT.KFWD.HT.Y.0027.000000T0000Z-260822T0100Z/
Eastland-Erath-Comanche-Mills-Hamilton-Lampasas-Coryell-Bell-Milam-
Including the cities of Eastland, Goldthwaite, Hamilton,
Stephenville, Gorman, Rockdale, Comanche, Dublin, Cameron, Ranger,
Cisco, Lampasas, Temple, Fort Hood, Copperas Cove, Killeen,
Gatesville, De Leon, and Hico
1153 AM CDT Thu Aug 20 2026
...HEAT ADVISORY NOW IN EFFECT UNTIL 8 PM CDT FRIDAY...
* WHAT...Temperatures up to 103 and heat index values up to 107.
* WHERE...Bell, Comanche, Coryell, Eastland, Erath, Hamilton,
Lampasas, Mills, and Milam Counties.
* WHEN...Until 8 PM CDT Friday.
* IMPACTS...Hot temperatures and high humidity will increase the risk
for heat-related illnesses to occur, particularly for those working
or participating in outdoor activities.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Take extra precautions when outside by staying hydrated, wearing
lightweight and loose fitting clothing, and limiting strenuous
activities to the early morning or evening. Check up on relatives and
neighbors. Never leave young children or pets in an enclosed vehicle,
even for a short time, as temperatures can quickly rise to
life-threatening levels.
Know the signs and symptoms of heat exhaustion and heat stroke. To
reduce risk when outdoors, the occupational safety and health
administration recommends scheduling frequent rest breaks in shaded
or air conditioned environments. Anyone overcome by heat should be
moved to a cool and shaded location. Heat stroke is an emergency!
Call 911 ASAP if you or someone you know is exhibiting signs of heat
stroke.
&&
$$
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.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Little Rock AR
1150 AM CDT Thu Aug 20 2026
ARZ033-034-210100-
/O.CON.KLZK.HT.Y.0023.000000T0000Z-260821T0100Z/
White-Woodruff-
Including the cities of Cotton Plant, Beebe, McCrory, Augusta, and
Searcy
1150 AM CDT Thu Aug 20 2026
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING...
* WHAT...Heat index values up to 109.
* WHERE...White and Woodruff Counties.
* WHEN...Until 8 PM CDT this evening.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.
&&
$$
73
URGENT - WEATHER MESSAGE
National Weather Service Missoula MT
1025 AM MDT Thu Aug 20 2026
IDZ007-008-211630-
/O.NEW.KMSO.HT.Y.0002.260821T1800Z-260822T0300Z/
Orofino/Grangeville Region-Lower Hells Canyon/Salmon River Region-
925 AM PDT Thu Aug 20 2026
...HEAT ADVISORY IN EFFECT FROM 11 AM TO 8 PM PDT FRIDAY...
* WHAT...Moderate to Major risk of heat effects expected.
* WHERE...Lower Hells Canyon/Salmon River Region and Orofino/Lower
Clearwater Region.
* WHEN...From 11 AM to 8 PM PDT Friday.
* IMPACTS...This level of heat affects anyone without effective
cooling and/or adequate hydration. Impacts likely in some health
systems, heat-sensitive industries and infrastructure.
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 Mobile AL
1121 AM CDT Thu Aug 20 2026
ALZ051>060-261>266-FLZ201>206-MSZ067-075-076-078-079-210030-
/O.NEW.KMOB.HT.Y.0018.260821T1600Z-260822T0100Z/
/O.CON.KMOB.HT.Y.0017.000000T0000Z-260821T0100Z/
Choctaw-Washington-Clarke-Wilcox-Monroe-Conecuh-Butler-Crenshaw-
Escambia-Covington-Mobile Inland-Baldwin Inland-Mobile Central-
Baldwin Central-Mobile Coastal-Baldwin Coastal-Escambia Inland-
Escambia Coastal-Santa Rosa Inland-Santa Rosa Coastal-
Okaloosa Inland-Okaloosa Coastal-Wayne-Perry-Greene-Stone-George-
Including the cities of Walnut Hill, Bay Minette, Perdido Bay,
Milton, Lisman, Stockton, McLain, Brewton, Saraland, Waynesboro,
Grand Bay, Grove Hill, Destin, Beaumont, Greenville, Evergreen,
Beulah, Fort Pickens, Wiggins, Pine Hill, Theodore, Ensley,
Andalusia, Daphne, Citronelle, Monroeville, Flomaton, Homewood,
Pensacola, Thomasville, Atmore, Century, Orange Beach, Navarre,
Richton, Wright, Opp, Gulf Shores, Millry, Fort Morgan, Fairhope,
Butler, Foley, New Augusta, Crestview, Leakesville, Jackson, Spanish
Fort, Luverne, Molino, Prichard, Bagdad, Brantley, Silas, Seminole,
Lucedale, Chatom, Eglin AFB, Niceville, Bayou La Batre, Camden,
Mobile, Pensacola Beach, Fort Walton Beach, Gulf Breeze, Dauphin
Island, Valparaiso, and Jay
1121 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...Heat index values up to 108 to 112 expected.
* WHERE...Portions of south central and southwest Alabama, northwest
Florida, and southeast Mississippi.
* 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.
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.
&&
$$
KLG
URGENT - WEATHER MESSAGE
National Weather Service San Angelo TX
1116 AM CDT Thu Aug 20 2026
TXZ049-054-098-099-113-114-127-128-211045-
/O.NEW.KSJT.HT.Y.0016.260821T1800Z-260822T0000Z/
/O.CON.KSJT.HT.Y.0015.260820T1800Z-260821T0000Z/
Fisher-Nolan-Haskell-Throckmorton-Jones-Shackelford-Taylor-Callahan-
Including the cities of Dudley, Cross Plains, Hamlin, Eula, Truby,
Clyde, Irby, Stith, Albany, Baird, Woodson, Tuxedo, Stamford, Rotan,
Funston, Haskell, Sweetwater, Abilene, Throckmorton, Anson, and Roby
1116 AM CDT Thu Aug 20 2026
...HEAT ADVISORY IN EFFECT FROM 1 PM TO 7 PM CDT FRIDAY...
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING...
* WHAT...Afternoon highs of 105 to 109 expected.
* WHERE...Callahan, Fisher, Haskell, Jones, Nolan, Shackelford,
Taylor, and Throckmorton Counties.
* WHEN...Until 7 PM CDT this evening, and then from 1 PM to 7 PM CDT
on Friday.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Heat Advisory means that hot weather conditions are occurring or
expected. This will create a situation in which heat illnesses are
possible.
Never, ever, leave children or pets alone in enclosed vehicles, not
even for a few minutes. Car interiors can reach lethal temperatures
in a matter of minutes.
Stay indoors and seek air-conditioned buildings. Drink water more
than usual, and avoid dehydrating alcoholic, sugary, or caffeinated
drinks. Dress for the heat by wearing lightweight and light colored
clothing. Eat small meals and eat more often. Monitor those with a
higher vulnerability to heat, including small children. Check in on
family, friends, and neighbors, especially the elderly. If engaging
in outdoor activity, take longer and more frequent breaks and avoid
the hottest parts of the day.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service San Angelo TX
1116 AM CDT Thu Aug 20 2026
TXZ064>066-072-073-139-140-154-155-211045-
/O.NEW.KSJT.HT.Y.0016.260821T1800Z-260822T0000Z/
Sterling-Coke-Runnels-Tom Green-Concho-Coleman-Brown-McCulloch-
San Saba-
Including the cities of Brownwood, Echo, Indian Creek, Lowake, Wall,
Benoit, Sterling City, Crews, Winters, Carlsbad, Silver, Voca,
Rowena, Brady, Fisk, Tennyson, Rochelle, Sanco, Broome, Robert Lee,
Ballinger, Harkeyville, Lohn, Eden, Hatchel, San Angelo, Paint Rock,
Voss, Chappel, Pumphrey, Fife, San Saba, Trickham, Valera, Cherokee,
Live Oak, Bronte, and Coleman
1116 AM CDT Thu Aug 20 2026
...HEAT ADVISORY IN EFFECT FROM 1 PM TO 7 PM CDT FRIDAY...
* WHAT...Afternoon highs of 103 to 106 expected.
* WHERE...Brown, Coke, Coleman, Concho, McCulloch, Runnels, San Saba,
Sterling, and Tom Green Counties.
* WHEN...From 1 PM to 7 PM CDT Friday.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Heat Advisory means that hot weather conditions are occurring or
expected. This will create a situation in which heat illnesses are
possible.
Never, ever, leave children or pets alone in enclosed vehicles, not
even for a few minutes. Car interiors can reach lethal temperatures
in a matter of minutes.
Stay indoors and seek air-conditioned buildings. Drink water more
than usual, and avoid dehydrating alcoholic, sugary, or caffeinated
drinks. Dress for the heat by wearing lightweight and light colored
clothing. Eat small meals and eat more often. Monitor those with a
higher vulnerability to heat, including small children. Check in on
family, friends, and neighbors, especially the elderly. If engaging
in outdoor activity, take longer and more frequent breaks and avoid
the hottest parts of the day.
&&
$$
7
URGENT - WEATHER MESSAGE
National Weather Service New Orleans LA
1113 AM CDT Thu Aug 20 2026
LAZ034>037-039-046>048-056>058-064-070-071-076>087-089>100-
MSZ068>071-077-083>088-210615-
/O.NEW.KLIX.XH.W.0008.260821T1600Z-260822T0100Z/
/O.CON.KLIX.HT.Y.0022.000000T0000Z-260821T0100Z/
Pointe Coupee-West Feliciana-East Feliciana-St. Helena-Washington-
Iberville-West Baton Rouge-East Baton Rouge-Assumption-St. James-
St. John The Baptist-Upper St. Bernard-Lower St. Bernard-Northern
Tangipahoa-Southeast St. Tammany-Western Orleans-Eastern Orleans-
Northern St. Tammany-Southwestern St. Tammany-Central Tangipahoa-
Lower Tangipahoa-Northern Livingston-Southern Livingston-Western
Ascension-Eastern Ascension-Upper Jefferson-Upper Plaquemines-
Central Plaquemines-Lower Plaquemines-Central Jefferson-Coastal
Jefferson-Upper Lafourche-Lower Lafourche-Upper Terrebonne-Lower
Terrebonne-Upper St. Charles-Central St. Charles-Lower St.
Charles-Wilkinson-Amite-Pike-Walthall-Pearl River-Northern
Hancock-Northern Harrison-Northern Jackson-Southern Hancock-
Southern Harrison-Southern Jackson-
Including the cities of New Orleans, Vancleave, Pearlington, Bay
St. Louis, Bogalusa, Crossroads, St. Martin, Escatawpa, Dulac,
Gillsburg, Montz, Walker, Akers, Covington, Bayou Cane, Gramercy,
Bonnet Carre Spillway, Easleyville, Clinton, Independence, Norco,
McNeil, French Settlement, White Castle, Barataria, Chalmette,
Diamondhead, Madisonville, Pointe A La Hache, Wade, Yscloskey,
Pascagoula, Westwego, Brusly, Hahnville, Larose, Boutte, Salem, Pass
Christian, Sorrento, Folsom, Houma, Plaquemine, Raceland, Reserve,
Long Beach, Greensburg, Tickfaw, Mandeville, Convent, Thibodaux,
Smithdale, Slidell, Gloster, Jackson, Lutcher, Picayune, Livonia,
Golden Meadow, Grand Isle, Montpelier, Shell Beach, Dolorosa,
Centreville, Braithwaite, Denham Springs, Port
Allen, St. Francisville, Marrero, Pierre Part, Donaldsonville,
Cocodrie, Spillman, Lettsworth, Wakefield, Livingston, Woodville,
Prairieville, Acy, Delacroix, Port Sulphur, Kenner, Bush, Gonzales,
Meraux, Gulfport, Gautier, Hammond, Amite, Fort Adams, Leeville,
Roseland, Tylertown, Springfield, Darlington, New Roads, Cut Off,
Lyman, Gretna, Violet, Robert, Moss Point, East New Orleans, Luling,
Bayou Sorrel, Galliano, Belle Chasse, Kiln, Lockport, Geismar,
Labadieville, Ponchatoula, Metairie, Alliance, Felps, Chauvin,
Killian, Biloxi, Wilmer, Ocean Springs, Poplarville, Enon, Lafitte,
Whitehall, Sellers, Montegut, Addis, McComb, Franklinton, Kentwood,
Liberty, Laplace, Destrehan, Baton Rouge, Necaise, Dexter,
Paincourtville, Buras, Jean Lafitte, Saucier, Harahan, and Waveland
1113 AM CDT Thu Aug 20 2026
...EXTREME HEAT WARNING IN EFFECT FROM 11 AM TO 8 PM CDT FRIDAY...
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING...
* WHAT...For the Heat Advisory, heat index values up to 110. For the
Extreme Heat Warning, dangerously hot conditions with heat index
values up to 113 expected.
* WHERE...Portions of southeast Louisiana and southern Mississippi.
* WHEN...For the Heat Advisory, until 8 PM CDT this evening. For the
Extreme Heat Warning, from 11 AM to 8 PM CDT Friday.
* 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.
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.
&&
$$
MSW
URGENT - WEATHER MESSAGE
National Weather Service Shreveport LA
1111 AM CDT Thu Aug 20 2026
ARZ050-051-059>061-070>072-OKZ077-TXZ096-097-108>112-210115-
/O.EXB.KSHV.HT.Y.0010.260821T0100Z-260822T0200Z/
/O.CON.KSHV.XH.W.0003.000000T0000Z-260821T0100Z/
Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette-
Columbia-McCurtain-Red River-Bowie-Franklin-Titus-Camp-Morris-
Cass-
Including the cities of Clarksville, Mineral Springs, Queen City,
Idabel, Ashdown, Nashville, Bradley, Lone Star, Naples, Linden, Hope,
Dierks, Mount Vernon, Mount Pleasant, Broken Bow, De Queen, Omaha,
Prescott, Daingerfield, Pittsburg, Texarkana, Atlanta, Bogata,
Magnolia, Stamps, Hughes Springs, and Lewisville
1111 AM CDT Thu Aug 20 2026
...HEAT ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO 9 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 113. For the Heat Advisory, heat index
values up to 109 expected.
* WHERE...Portions of southwest Arkansas, southeast Oklahoma, and
northeast Texas.
* WHEN...For the Extreme Heat Warning, until 8 PM CDT this evening.
For the Heat Advisory, from 8 PM this evening to 9 PM CDT Friday.
* 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.
Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.
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.
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
1111 AM CDT Thu Aug 20 2026
ARZ073-LAZ001>006-010>014-017>022-TXZ124>126-136>138-149>153-165>167-
210115-
/O.EXT.KSHV.HT.Y.0010.000000T0000Z-260822T0200Z/
Union-Caddo-Bossier-Webster-Claiborne-Lincoln-Union-De Soto-Red
River-Bienville-Jackson-Ouachita-Sabine-Natchitoches-Winn-Grant-
Caldwell-La Salle-Wood-Upshur-Marion-Smith-Gregg-Harrison-Cherokee-
Rusk-Panola-Nacogdoches-Shelby-Angelina-San Augustine-Sabine-
Including the cities of Winnfield, Homer, Many, Colfax, Big Sandy, El
Dorado, Shreveport, Jacksonville, Center, Columbia, Coushatta,
Springhill, Winnsboro, Grayson, Henderson, Nacogdoches, Carthage,
Pleasant Hill, Hemphill, Farmerville, San Augustine, Zwolle, Monroe,
Gilmer, Natchitoches, Gibsland, Haynesville, Ruston, Clarks, Hawkins,
Rusk, Arcadia, Ringgold, Minden, Jena, Martin, Mineola, Jonesboro,
Longview, Pineland, Stonewall, Montgomery, Olla, Bossier City,
Marshall, Jefferson, Quitman, Lufkin, Midway, Bernice, Dry Prong,
Tyler, Mansfield, and Logansport
1111 AM CDT Thu Aug 20 2026
...HEAT ADVISORY NOW IN EFFECT UNTIL 9 PM CDT FRIDAY...
* WHAT...Heat index values up to 109.
* WHERE...Portions of south central Arkansas, north central and
northwest Louisiana, and east 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.
&&
$$
26
URGENT - WEATHER MESSAGE
National Weather Service Salt Lake City UT
439 AM MDT Thu Aug 20 2026
UTZ101>106-210145-
/O.CON.KSLC.HT.Y.0008.260820T1800Z-260822T1300Z/
Great Salt Lake Desert and Mountains-Tooele and Rush Valleys-
Eastern Box Elder County-Northern Wasatch Front-Salt Lake Valley-
Utah Valley-
Including the following locations - Payson, Salt Lake City,
Sandy, Wendover, Snowville, Lehi, Vernon, Park Valley, West Jordan,
Brigham City, Bountiful, Dugway, Provo, Grantsville, Tooele, and
Ogden
439 AM MDT Thu Aug 20 2026
...HEAT ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 7 AM MDT
SATURDAY...
* WHAT...High temperatures to around 100 degrees expected alongside
overnight low temperatures in the low- to mid-70s.
* WHERE...The Wasatch Front, Great Salt Lake Desert and Mountains,
and Tooele and Rush Valleys.
* WHEN...From noon today to 7 AM MDT Saturday.
* IMPACTS...Hot temperatures may cause heat illness. Warm overnight
temperatures will limit the amount of relief from the hot daytime
temperatures, bringing a period of prolonged heat exposure,
especially for vulnerable populations.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.
To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Salt Lake City UT
439 AM MDT Thu Aug 20 2026
UTZ115-116-210145-
/O.CON.KSLC.HT.Y.0008.260820T1800Z-260821T1300Z/
Western Millard and Juab Counties-Eastern Juab/Millard Counties-
Including the following locations - Scipio, Nephi, Little Sahara,
Fillmore, and Delta
439 AM MDT Thu Aug 20 2026
...HEAT ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 7 AM MDT
FRIDAY...
* WHAT...High temperatures to around 100 degrees expected alongside
overnight low temperatures in the upper-60s to low-70s.
* WHERE...Eastern Juab/Millard Counties and Western Millard and Juab
Counties.
* WHEN...From noon today to 7 AM MDT Friday.
* IMPACTS...Hot temperatures may cause heat illness. Warm overnight
temperatures will limit the amount of relief from the hot daytime
temperatures, bringing a period of prolonged heat exposure,
especially for vulnerable populations.
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.
&&
$$
For more information from the National Weather Service visit
https://weather.gov/saltlakecity.
For information on potential travel impacts visit
http://udottraffic.utah.gov
HM
URGENT - WEATHER MESSAGE
National Weather Service Los Angeles/Oxnard CA
131 AM PDT Thu Aug 20 2026
CAZ038-088-343>345-351-353-371>373-375-376-379-380-548-210300-
/O.CON.KLOX.HT.Y.0013.000000T0000Z-260821T0300Z/
Cuyama Valley-Santa Clarita Valley-Southern Salinas Valley-San
Luis Obispo County Interior Valleys-San Luis Obispo County
Mountains-Santa Ynez Mountains Western Range-Santa Barbara County
Interior Mountains-Calabasas and Agoura Hills-Western San
Fernando Valley-Eastern San Fernando Valley-Santa Susana
Mountains-Southern Ventura County Mountains-Western San Gabriel
Mountains and Highway 14 Corridor-Eastern San Gabriel Mountains-
Los Angeles County San Gabriel Valley-
Including the cities of Oat Mountain, Van Nuys, Shandon, Glendale,
Creston, Figueroa Mountain, East Los Angeles, Northridge, Burbank,
Wrightwood, Templeton, Acton, Mount Wilson, Valencia, Warm Springs,
Santa Margarita Lake, Sunland, Malibu Lake, Big Pine Mountain,
Pomona, San Miguel, Carrizo Plain, Woodland Hills, Matilija, Santa
Clarita, Mount Baldy, Pasadena, Universal City, The Angeles Crest
Highway, Lake Castaic, Topatopa Mountains, San Marcos Pass, San
Gabriel, El Monte, Atascadero, Rose Valley, San Rafael Mountain, New
Cuyama, Mill Creek, Caliente Range, Newhall, Chatsworth, Westlake
Village, La Panza Range, Paso Robles, La Canada Flintridge, and Lake
Nacimiento
131 AM PDT Thu Aug 20 2026
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING...
* WHAT...High temperatures of 92 to 105 expected, with most areas
seeing peak heat on Wednesday and Thursday. Low temperatures are
expected to range from the upper 60s to lower 70s at lower
elevations to the mid 70s to lower 80s in the foothills and
mountains.
* WHERE...A portion of southwest California.
* WHEN...Until 8 PM PDT this evening.
* IMPACTS...Hot temperatures may cause heat illnesses. Warmer than
normal low temperatures will add to the heat discomfort.
* ADDITIONAL DETAILS...The heat advisory may need to be extended into
Friday for portions of the forecast area, but there remains
considerable uncertainty at this time.
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.
&&
$$
ASR
URGENT - WEATHER MESSAGE
National Weather Service Lubbock TX
249 AM CDT Thu Aug 20 2026
TXZ024>026-030>032-036>038-042>044-210100-
/O.CON.KLUB.HT.Y.0021.260820T1800Z-260821T0100Z/
Briscoe-Hall-Childress-Floyd-Motley-Cottle-Crosby-Dickens-King-Garza-
Kent-Stonewall-
Including the cities of Floydada, Roaring Springs, Quitaque, Cee Vee,
Dumont, Silverton, Matador, Childress, Aspermont, Crosbyton, Post,
Turkey, Spur, Memphis, Dickens, Lake Alan Henry, Lockney, Old Glory,
Guthrie, Kirkland, Paducah, Jayton, and Ralls
249 AM CDT Thu Aug 20 2026
...HEAT ADVISORY REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO 8 PM
CDT THIS EVENING...
* WHAT...Temperatures up to 109 expected.
* WHERE...The far southeastern Texas Panhandle and the Rolling
Plains.
* WHEN...From 1 PM this afternoon to 8 PM CDT this evening.
* IMPACTS...Hot temperatures 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.
&&
$$
AJE
URGENT - WEATHER MESSAGE
National Weather Service Elko NV
1227 AM PDT Thu Aug 20 2026
NVZ033-202130-
/O.CON.KLKN.HT.Y.0008.260820T1800Z-260821T0400Z/
Southeastern Elko-
Including the cities of West Wendover
1227 AM PDT Thu Aug 20 2026
...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 9 PM
PDT THIS EVENING...
* WHAT...Max temperatures ranging from 98 to 103.
* WHERE...Southeastern Elko County.
* WHEN...From 11 AM this morning to 9 PM PDT this evening.
* IMPACTS...Hot temperatures may cause heat illnesses, especially for
individual working outdoors, the elderly, young children, and folks
visiting from cooler regions.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, take frequent breaks when working outdoors,
seek air-conditioned places to cool off, limit exposure to the sun,
and check up on relatives and neighbors.
&&
$$
