431 WWUS74 KMEG 201736 NPWMEG 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. && $$ ARZ049-058-MSZ007-010-011-020-210145- /O.CON.KMEG.HT.Y.0023.000000T0000Z-260821T0100Z/ /O.CON.KMEG.HT.Y.0024.260821T1600Z-260822T0100Z/ Lee AR-Phillips-Tunica-Coahoma-Quitman-Tallahatchie- Including the cities of Tunica, Helena-West Helena, Marks, Marianna, Clarksdale, and Charleston 1236 PM CDT Thu Aug 20 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING... ...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TO 8 PM CDT FRIDAY... * WHAT...For the first Heat Advisory, heat index values up to 109. For the second Heat Advisory, heat index values up to 110 expected. * WHERE...In Arkansas, Lee AR and Phillips Counties. In Mississippi, Coahoma, Quitman, Tallahatchie, and Tunica Counties. * WHEN...For the first Heat Advisory, until 8 PM CDT this evening. For the second Heat Advisory, from 11 AM to 8 PM CDT Friday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ 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