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Coastal Waters Forecast for Coastal waters from the Southwest Pass of the Mississippi River to Port Fourchon Louisiana out 20 NM (GMZ553) (Text-Only)
NWS Forecast for: Coastal waters from the Southwest Pass of the Mississippi River to Port Fourchon Louisiana out 20 NM (GMZ553)
Issued by: National Weather Service New Orleans/Baton Rouge, LA
Last Update: 537 AM CDT Wed Sep 2 2026		Print

Today: East winds around 5 knots. Seas 1 foot or less. Wave detail: south 1 foot at 5 seconds. A slight chance of showers and thunderstorms early this morning, then a chance of showers and thunderstorms late this morning and early afternoon. A slight chance of showers and thunderstorms late.

Tonight: East winds around 5 knots. Seas 1 foot or less. Wave detail: southeast 1 foot at 4 seconds and southwest 1 foot at 4 seconds.

Thursday: East winds 5 to 10 knots. Seas 1 foot or less. Wave detail: east 1 foot at 3 seconds. A chance of showers and thunderstorms.

Thursday Night: Southeast winds around 5 knots. Seas 1 foot or less. Wave detail: east 1 foot at 4 seconds. A chance of showers and thunderstorms after midnight.

Friday: Northeast winds around 5 knots, becoming southeast around 5 knots in the afternoon. Seas 1 foot or less. Wave detail: east 1 foot at 4 seconds. A chance of thunderstorms. Showers likely, mainly in the morning.

Friday Night: South winds around 5 knots. Seas 1 foot or less. Wave detail: southeast 1 foot at 3 seconds. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight.

Saturday: West winds around 5 knots. Seas 1 foot or less. Wave detail: south 1 foot at 2 seconds. A chance of showers and thunderstorms.

Saturday Night: Southwest winds around 5 knots. Seas 1 foot or less. Wave detail: southwest 1 foot at 4 seconds. A slight chance of showers and thunderstorms after midnight.

Sunday: West winds around 5 knots. Seas 1 foot or less. A chance of showers and thunderstorms, mainly in the morning.

Sunday Night: Southwest winds around 5 knots. Seas 1 foot or less. Wave detail: southwest 1 foot at 2 seconds. A slight chance of showers and thunderstorms after midnight.

winds and seas higher in and near thunderstorms.






Zone Forecast: Coastal waters from the Southwest Pass of the Mississippi River to Port Fourchon Louisiana out 20 NM (GMZ553)

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