Louisiana, Mississippi Severe Extreme Heat Warning | Effective 07/21/2026 19:51

Headline: 
Extreme Heat Warning issued July 21 at 9:51PM CDT until July 22 at 8:00PM CDT by NWS Jackson MS
Event: 
Extreme Heat Warning
Urgency: 
Expected
Effective: 
July 21, 2026 - 7:51pm
Expires: 
July 22, 2026 - 4:00am
Description: 
* WHAT...Dangerously hot conditions with heat index values up to 114 expected. * WHERE...Portions of northeast Louisiana and central, south central, southeast, southwest, and west central Mississippi. * WHEN...From 10 AM to 8 PM CDT Wednesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.
Instruction: 
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. 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. Stay cool, stay hydrated, stay informed.
Area Description: 
East Carroll; Madison; Franklin; Catahoula; Tensas; Concordia; Issaquena; Sharkey; Yazoo; Madison; Warren; Hinds; Rankin; Claiborne; Copiah; Simpson; Jefferson; Adams; Franklin; Lincoln; Lawrence; Jefferson Davis; Covington; Marion; Lamar
Forcast Office: 
NWS Jackson MS