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Heat Advisory — Pointe Coupee, LA, West Feliciana, LA, East Feliciana, LA, St. Helena, LA, Washington, LA, Iberville, LA, West Baton Rouge, LA, East Baton Rouge, LA, Assumption, LA, Lower St. Bernard, LA, Northern Tangipahoa, LA, Central Plaquemines, LA, Lower Plaquemines, LA, Coastal Jefferson, LA, Upper Lafourche, LA, Lower Lafourche, LA, Upper Terrebonne, LA, Lower Terrebonne, LA, Wilkinson, MS, Amite, MS, Pike, MS, Walthall, MS, Pearl River, MS
Issued
11:00 AM CDT · mar., août 18 2026
Expires
8:00 PM CDT · mar., août 18 2026
Issuing Office
NWS KLIX

Affected Areas

Pointe Coupee, LA West Feliciana, LA East Feliciana, LA St. Helena, LA Washington, LA Iberville, LA West Baton Rouge, LA East Baton Rouge, LA Assumption, LA Lower St. Bernard, LA Northern Tangipahoa, LA Central Plaquemines, LA Lower Plaquemines, LA Coastal Jefferson, LA Upper Lafourche, LA Lower Lafourche, LA Upper Terrebonne, LA Lower Terrebonne, LA Wilkinson, MS Amite, MS Pike, MS Walthall, MS Pearl River, MS

Official Bulletin

* WHAT...For the Extreme Heat Warning, dangerously hot conditions
with heat index values up to 115. For the Heat Advisory, heat index
values up to 110 expected.

* WHERE...Portions of southeast Louisiana and southern Mississippi.

* WHEN...For the Extreme Heat Warning, until 8 PM CDT this evening.
For the Heat Advisory, from 11 AM to 8 PM CDT Tuesday.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat and high humidity events. Hot temperatures and high
humidity may cause heat illnesses.

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.