Severe Severe Storm ● Closed

Special Marine Warning issued September 7 at 1:20PM CDT until September 7 at 2:00PM CDT by NWS New Orleans LA, United States of America

Event time: Sep 7, 2026 18:20 UTC Last updated: Sep 16, 2026 United States

Icon = what happened · ring colour = how serious: Extreme Severe Moderate Minor

Loading live data… · Marker positions are approximate; severity is labelled in each popup. Sources: USGS, GDACS, NASA EONET, NOAA/NWS, EMSC.

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...
Terrebonne Bay...

* Until 200 PM CDT.

* At 120 PM CDT, a cluster of severe thunderstorms capable of
producing waterspouts was located 8 nm north of Terrebonne Bay,
moving southwest at 10 knots.

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.

* Locations impacted include...
Terrebonne Bay.

Measurements

Coordinates	29.2670, -90.6020
Region	Terrebonne Bay; Coastal Waters from Port Fourchon LA to Lower Atchafalaya River LA out 20 nm
Location Precision	polygon
Issuing Authority	United States of America — us-noaa-nws-en-marine
Cap Urgency	Immediate
Cap Certainty	Likely
Cap Expires	2026-09-07T14:00:00-05:00

Official source

Warnings courtesy of the issuing national meteorological service, via the WMO Alert Hub.

This is an official warning issued by the authority named above. Follow its instructions and those of your local emergency services.

Severity as published by WMO Alert Hub (national weather services).

View original report

This event as JSON · API and licence

Source updated 42 days ago (Sep 7, 2026 18:21 UTC) · we last heard from WMO Alert Hub (national weather services) 19 seconds ago

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Official authorities in United States

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Earlier severe storm events in United States

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Disclaimer: figures are automatic feeds from the named agencies and may be revised. Do not use this page for life-safety decisions — follow official local emergency services.