Severe Tropical Storm Warning | Effective 07/21/2026 14:19

Headline: 
Tropical Storm Warning issued July 21 at 4:19PM CDT by NWS New Orleans LA
Event: 
Tropical Storm Warning
Urgency: 
Immediate
Effective: 
July 21, 2026 - 2:19pm
Expires: 
July 22, 2026 - 4:30am
Description: 
* WHAT...Southwest winds 25 to 35 kt with gusts up to 55 kt and seas 7 to 10 ft. * WHERE...Lake Pontchartrain, Lake Salvador and Lake Cataouatche, Terrebonne Bay, Coastal Waters from Port Fourchon LA to Lower Atchafalaya River LA out 20 to 60 Nautical Miles. * WHEN...Tropical Storm force winds possible from Wednesday afternoon until early Thursday morning. * IMPACTS...Tropical storm force winds and hazardous seas will capsize or damage vessels and reduce visibility.
Instruction: 
Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions.
Area Description: 
Lake Pontchartrain; Lake Salvador and Lake Cataouatche; Terrebonne Bay; Coastal Waters from Port Fourchon LA to Lower Atchafalaya River LA out 20 nm; Coastal waters from Port Fourchon Louisiana to Lower Atchafalaya River LA from 20 to 60 NM
Forcast Office: 
NWS New Orleans LA