Special Marine Warning Issued for Lake Pontchartrain and Mississippi Sound Through Late Wednesday Night
This alert is no longer in effect.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 coastal waters in Louisiana and Mississippi as severe thunderstorms with 40-knot wind gusts move through the area.
Read this weather record in 30 seconds
- Record type
- Special Marine Warning
- Affected area
- Gulf Coast Region
- Issued
- April 6, 2026
- Issuing authority
- NWS New Orleans
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 Gulf Coast Region.
Alert Details
The National Weather Service in New Orleans LA has issued a Special Marine Warning for several coastal water bodies. The alert was triggered by radar-indicated severe thunderstorms capable of producing significant wind hazards for maritime activities.
Affected Areas
The warning covers the following marine locations:
- Lake Pontchartrain and Lake Maurepas
- Mississippi Sound
- Lake Borgne
- Chandeleur Sound
Specific land-adjacent locations impacted include Cat Island, Bay St. Louis, Waveland, Long Beach, Pass Christian, Rigolets, Lake Borgne, and Gulfport.
What You Should Do
Strong winds pose an immediate danger to boaters and anyone on the water. Officials advise that all individuals on board vessels must wear life jackets. Boaters should seek immediate shelter or move to a safe harbor until the hazardous weather conditions pass. Additionally, a Tornado Watch remains in effect for southeastern Louisiana, southern Mississippi, and adjacent coastal waters until 2:00 AM CDT.
Expected Conditions
At 10:43 PM CDT, a cluster of severe thunderstorms was tracked along a line from near Waveland to 9 nautical miles west of Lake Borgne. These storms are moving east at a high speed of 55 knots.
Primary Hazards:
- Wind: Gusts up to 40 knots.
- Waves: Suddenly higher waves are expected.
- Impact: Small craft could be damaged by the brief increase in wind speeds and sea state.
Timeline
The Special Marine Warning is effective immediately and is scheduled to expire at 11:45 PM CDT on March 11, 2026.
Original source: NOAA Official Notice ↗
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