Severe · Special Marine WarningThis alert has expired. It is kept for reference.
Special Marine Warning issued September 10 at 5:50AM CDT until September 10
Affecting 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
In effect until: Sep 10, 2026, 12:15 PM
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
Likely impact; effects through 12:15 PM.
Strong winds will be dangerous for boaters or anyone near the water. Boaters should avoid waterspouts and never try to navigate near them. Make sure all on board are wearing life jackets. Seek shelter or move to safe harbor until hazardous weather passes.
Read the original bulletin (official text)
SMWLIX The National Weather Service in New Orleans has issued a * Special Marine Warning for... 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... * Until 715 AM CDT. * At 550 AM CDT, a cluster of severe thunderstorms capable of producing waterspouts was located 20 nm east of Ship Shoal 198, or 23 nm south of Isle Derniers. The cluster of severe thunderstorms were nearly stationary. HAZARD...Waterspouts and wind gusts 34 knots or greater. SOURCE...Radar. IMPACT...Waterspouts can quickly form and capsize boats...damage vessels and oil rigs...and create suddenly higher waves. Small craft could be damaged in briefly higher winds and suddenly higher waves. * The cluster of severe thunderstorms will remain over mainly open waters.
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Alert data: U.S. National Weather Service / NOAA · Translation: WeatherTranslate™