Special Marine Warning for Lake Pontchartrain and Lake Maurepas Through 2:15 AM CDT
This alert is no longer in effect.
NOAA issued it on April 5, 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).
Areazine synthesizes this NWS weather alert directly from NOAA's official public data feed. See our methodology for full source attribution and refresh cadence.
The National Weather Service has issued a Special Marine Warning for Lake Pontchartrain and Lake Maurepas as a severe thunderstorm with 50-knot winds and large hail moves through the area.
Read this weather record in 30 seconds
- Record type
- Special Marine Warning
- Affected area
- Lake Pontchartrain and Lake Maurepas
- Issued
- April 5, 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 Lake Pontchartrain and Lake Maurepas.
Alert Details
The National Weather Service in New Orleans has issued a Special Marine Warning for Lake Pontchartrain and Lake Maurepas. This alert was issued following radar detection of a severe thunderstorm moving through the region.
Affected Areas
The warning specifically impacts the following geographic locations:
- Lake Pontchartrain and Lake Maurepas
- The Mid Point Of The Causeway Bridge
- Manchac
- Mandeville
What You Should Do
Boaters should seek safe harbor immediately and remain there until the storm passes. If caught on open water, stay below deck if possible and keep away from ungrounded metal objects to avoid lightning strikes. You are encouraged to report severe weather to the Coast Guard or the National Weather Service. Note that a Tornado Watch also remains in effect for southeastern Louisiana until 4:00 AM CDT.
Expected Conditions
At 1:26 AM CDT, a severe thunderstorm was located 7 nautical miles west of Lake Maurepas, moving east at 35 knots. The following conditions are expected:
- Wind: Gusts in excess of 50 knots, which could cause boats to suffer significant structural damage.
- Hail: Large hail that may result in injury and damage to vessels and oil rigs.
- Waves: Suddenly higher waves capable of capsizing small craft.
- Additional Hazards: Frequent lightning and heavy rain.
Timeline
The warning is effective as of 1:26 AM CDT on March 16 and is currently set to expire at 2:15 AM CDT.
Original source: NOAA Official Notice ↗
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