NWS New Orleans LAMA.W 0337September 12, 2026
Special Marine Warning: Terrebonne Bay and Coastal Waters from Port Fourchon LA to Lower Atchafalaya River LA out 20 nm
The National Weather Service office in New Orleans issued a special marine warning for Terrebonne Bay and Coastal Waters from Port Fourchon LA to Lower Atchafalaya River LA out 20 nm, which was in force until 2:15 p.m. local time on September 12. It was the 337th special marine warning the NWS office in New Orleans issued in 2026.
ExpiredWarning
In force for 1.5 hours; it has expired. The agency may have replaced it with a new notice.
The notice
- Issued by
- National Weather Service, New Orleans LA
- Area
- Terrebonne Bay and Coastal Waters from Port Fourchon LA to Lower Atchafalaya River LA out 20 nm
- Level
- Warning
- Issued
- 12:44 p.m. CDT, September 12, 2026
- Expires
- 2:15 p.m. CDT, September 12, 2026
- CAP severity, certainty, urgency
- Severe, Likely, Immediate
- VTEC event
- KLIX MA.W 0337
- Official source
- National Weather Service: the notice at its source
NWS notices, September 2026The latest from the National Weather Service
Source: National Weather Service: the notice at its source. AreaZine rebuilds this page from the agency's record; the agency's page is the one to act on. A U.S. Government work, in the public domain.
The notice as issued
SMWLIX The National Weather Service in New Orleans has issued a * Special Marine Warning for... Terrebonne Bay... Coastal Waters from Port Fourchon LA to Lower Atchafalaya River LA out 20 nm... * Until 215 PM CDT. * At 1244 PM CDT, severe thunderstorms capable of producing waterspouts were located along a line from 9 NM west of Golden Meadow to 6 NM southeast of Point Au Fer Island, or along a line from 10 NM north of Timbalier Bay to 6 NM southeast of Point Au Fer Island, moving southeast at 5 knots. HAZARD...Waterspouts and wind gusts to 34 knots. SOURCE...Radar indicated. IMPACT...Waterspouts can easily overturn boats and create locally hazardous seas. Small craft could be damaged in briefly higher winds and suddenly higher waves. * Locations impacted include... Isle Derniers, Terrebonne Bay, Caillou Bay, Timbalier Island and Timbalier Bay.
What the agency told people to do
Move to safe harbor until hazardous weather passes. Frequent lightning is occurring with these storms. If caught on the open water stay below deck if possible, keep away from ungrounded metal objects.
Source: National Weather Service: the notice at its source. The text is the agency's, unedited. A U.S. Government work, in the public domain.