Coastal Waters Forecast for Lake Pontchartrain and Lake Maurepas (GMZ530) (Text-Only)
NWS Forecast for: Lake Pontchartrain and Lake Maurepas (GMZ530)
Issued by: National Weather Service New Orleans/Baton Rouge, LA
Last Update: 103 AM CST Mon Feb 23 2026
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Rest Of Tonight: North winds 20 to 25 knots. Waves 3 to 5 feet.

Monday: North winds 20 to 25 knots, becoming northwest around 15 knots in the afternoon. Waves 3 to 4 feet.

Monday Night: North winds 10 to 15 knots. Waves 2 to 4 feet.

Tuesday: East winds around 5 knots, becoming south in the afternoon. Waves 1 foot or less, then 1 to 2 feet in the afternoon.

Tuesday Night: South winds 10 to 15 knots. Waves 2 to 3 feet.

Wednesday: South winds 10 to 15 knots, increasing to 15 to 20 knots in the afternoon. Waves 2 to 4 feet.

Wednesday Night: South winds 15 to 20 knots. Waves 3 to 4 feet. A slight chance of showers in the evening.

Thursday: Southwest winds 20 to 25 knots. Waves 3 to 4 feet. A chance of showers and thunderstorms in the afternoon.

Thursday Night: Southwest winds 15 to 20 knots, becoming north 10 to 15 knots after midnight. Waves 2 to 4 feet. Showers likely. A chance of thunderstorms, mainly in the evening.

Friday: Northeast winds 10 to 15 knots, diminishing to 5 to 10 knots in the afternoon. Waves 2 to 3 feet in the morning, then 1 foot or less. A chance of showers, mainly in the morning.

Friday Night: Northeast winds around 5 knots. Waves 1 foot or less.

winds and waves higher in and near thunderstorms.







Zone Forecast: Lake Pontchartrain and Lake Maurepas (GMZ530)

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