Louisiana, Mississippi Moderate Heat Advisory | Effective 08/19/2026 19:52

Headline: 
Heat Advisory issued August 19 at 9:52PM CDT until August 20 at 8:00PM CDT by NWS New Orleans LA
Event: 
Heat Advisory
Urgency: 
Expected
Effective: 
August 19, 2026 - 7:52pm
Expires: 
August 20, 2026 - 11:00am
Description: 
* WHAT...Heat index values up to 111 degrees expected. * WHERE...All of southeast Louisiana and southern Mississippi. * WHEN...From 11 AM to 8 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
Instruction: 
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
Area Description: 
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
Forcast Office: 
NWS New Orleans LA
Sender: 
w-nws.webmaster@noaa.gov