Special Marine Warning Issued for Louisiana Coastal Waters Near Southwest Pass
This alert is no longer in effect.
NOAA issued it on April 6, 2026, 4 months ago. Warnings of this kind stay in effect for hours to a few days, so this page is a historical record of what was issued, not a current warning. For conditions where you are right now, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia).
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The National Weather Service has issued a Special Marine Warning for Louisiana coastal waters until 2:45 PM CST due to severe thunderstorms capable of producing waterspouts.
Read this weather record in 30 seconds
- Record type
- Special Marine Warning
- Affected area
- Louisiana Coastal Waters
- Issued
- April 6, 2026
- Issuing authority
- NWS New Orleans LA
Marine notices apply to named waters or shoreline zones. They may not describe conditions on land, even when the nearest place name is the same.
Record status: historical. It was issued 4 months ago; use the issuing agency's live warning service for current conditions in Louisiana Coastal Waters.
Alert Details
The National Weather Service in New Orleans has issued a Special Marine Warning for specific coastal waters off the Louisiana coast. The alert was issued at 1:43 PM CST on March 7, 2026, and remains in effect until 2:45 PM CST.
Affected Areas
The warning covers the coastal waters from the Southwest Pass of the Mississippi River to Port Fourchon, Louisiana, extending from 20 to 60 nautical miles offshore.
What You Should Do
Strong winds associated with this system are dangerous for boaters and anyone near the water. Residents and mariners in the warning area should take the following actions:
- Ensure all persons on board vessels are wearing life jackets.
- Seek shelter or move to a safe harbor immediately until the hazardous weather passes.
- Avoid waterspouts and never attempt to navigate near them.
Expected Conditions
At 1:42 PM CST, radar indicated a cluster of severe thunderstorms located 34 nautical miles southeast of the Louisiana Offshore Oil Port (or 39 nautical miles southwest of Southwest Pass). The system is moving northwest at 25 knots.
Primary Hazards:
- Waterspouts: Capable of quickly forming and capsizing boats or damaging vessels and oil rigs.
- Wind: Gusts up to 40 knots.
- Waves: Suddenly higher waves are expected, which could damage small craft.
Timeline
The Special Marine Warning is effective immediately as of 1:43 PM CST and is expected to expire at 2:45 PM CST on March 7, 2026. The cluster of severe thunderstorms is expected to remain primarily over open waters during this window.
Original source: NOAA Official Notice ↗
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