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Heavy Rainfall Threat for Mid-Atlantic into Southern New England; Fire Weather Hazards for the West

Heavy rain and isolated severe thunderstorms may cause flash flooding in the northern Mid-Atlantic today. The Mid-Atlantic and Southeast heatwave is slowly easing, while cooler, drier air spreads across the Central and Eastern U.S. for the start of August. Critical fire conditions persist in the Pacific Northwest and Four Corners due to dry storms and gusty winds. Read More >

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: 1251 PM CDT Thu Jul 31 2025		Print

Rest Of Today: West winds around 5 knots. Waves 1 foot or less. A slight chance of showers and thunderstorms early this afternoon, then a chance of showers and thunderstorms late.

Tonight: Southwest winds around 5 knots. Waves 1 foot or less. A chance of showers and thunderstorms in the evening.

Friday: West winds around 5 knots. Waves 1 foot or less. A chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon.

Friday Night: Southwest winds around 5 knots, becoming northwest after midnight. Waves 1 foot or less. A chance of showers and thunderstorms, mainly in the evening.

Saturday: Northwest winds around 5 knots. Waves 1 foot or less. A chance of showers and thunderstorms in the morning, then showers and thunderstorms in the afternoon.

Saturday Night: North winds around 5 knots. Waves 1 foot or less. A chance of showers and thunderstorms, mainly in the evening.

Sunday: North winds around 5 knots. Waves 1 foot or less. A chance of showers and thunderstorms.

Sunday Night: Northeast winds around 5 knots. Waves 1 foot or less. A slight chance of showers and thunderstorms.

Monday: Northeast winds around 5 knots. Waves 1 foot or less. A chance of showers and thunderstorms.

Monday Night: Southeast winds around 5 knots, becoming northwest after midnight. Waves 1 foot or less. A chance of showers and thunderstorms, mainly in the evening.

winds and waves higher in and near thunderstorms.






Zone Forecast: Lake Pontchartrain and Lake Maurepas (GMZ530)

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