Special Marine Warning Issued for Lake Pontchartrain and Lake Maurepas
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NWS New Orleans has issued a Special Marine Warning for Lake Maurepas and Lake Pontchartrain until 6:15 PM CDT due to severe thunderstorms with 40-knot winds and small hail.
Read this weather record in 30 seconds
- Record type
- Special Marine Warning
- Affected area
- Lake Pontchartrain and Lake Maurepas, Louisiana
- Issued
- August 23, 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: publication date is recent, but current status is not stored on this page. Check the issuing agency's live warning service before acting because warnings can be updated, narrowed, or cancelled.
Alert Details
A Special Marine Warning has been issued by the National Weather Service in New Orleans. The alert is effective from August 23, 2026 at 4:39 PM CDT until August 23, 2026 at 6:15 PM CDT.
Affected Areas
The warning covers Lake Maurepas and Lake Pontchartrain. Locations impacted include Madisonville, Manchac, Lake Pontchartrain/Lake Maurepas, Orleans Marina, Mandeville, The Mid Point Of The Causeway Bridge, Kenner, and Lacombe.
What You Should Do
Strong winds will be dangerous for boaters or anyone near the water. Make sure all on board are wearing life jackets. Seek shelter or move to safe harbor until hazardous weather passes. Boaters should seek safe harbor immediately until these storms pass.
Expected Conditions
At 4:39 PM CDT, a cluster of severe thunderstorms was located along a line extending from 14 nm west of Manchac to near Lake Maurepas to near Madisonville, moving southeast at 25 knots. Hazards include wind gusts to 40 knots and small hail. Wind gusts to 40 knots, small hail, high waves, dangerous lightning, and heavy rain are possible.
Timeline
The alert is in effect from 4:39 PM CDT to 6:15 PM CDT on August 23, 2026.
Original source: NOAA Official Notice ↗
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Two Areazine-derived peer sets for this NWS weather alert: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.
Similar body length
Nearest notices by article body length (1,178 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to August 23, 2026.
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