136 WWUS74 KJAN 201746 NPWJAN 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. && $$ 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