Coastal Waters Forecast for Coastal waters from Southwest Pass of the Mississippi River to Port Fourchon Louisiana from 20 to 60 NM (GMZ572) (Text-Only)
NWS Forecast for: Coastal waters from Southwest Pass of the Mississippi River to Port Fourchon Louisiana from 20 to 60 NM (GMZ572)
Issued by: National Weather Service New Orleans/Baton Rouge, LA
Last Update: 537 PM CDT Wed Sep 16 2026




Tonight: East winds 20 to 25 knots with gusts up to 30 knots. Seas 6 to 9 feet, occasionally to 11 feet. Wave detail: east 9 feet at 7 seconds. A chance of showers and thunderstorms this evening, then a slight chance of showers after midnight.

Thursday: East winds 20 to 25 knots with gusts up to 30 knots. Seas 7 to 9 feet, occasionally to 11 feet. Wave detail: east 9 feet at 8 seconds. A slight chance of showers in the afternoon.

Thursday Night: East winds 20 to 25 knots with gusts up to 30 knots. Seas 8 to 10 feet, occasionally to 13 feet, subsiding to 6 to 8 feet, occasionally to 10 feet after midnight. Wave detail: east 9 feet at 8 seconds, becoming east 8 feet at 8 seconds.

Friday: East winds 15 to 20 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave detail: east 7 feet at 7 seconds. A slight chance of showers and thunderstorms in the afternoon.

Friday Night: East winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Seas 4 to 6 feet, occasionally to 8 feet, subsiding to 3 to 4 feet, occasionally to 5 feet after midnight. Wave detail: east 6 feet at 7 seconds, becoming east 4 feet at 7 seconds.

Saturday: East winds 5 to 10 knots. Seas 2 to 3 feet. Wave detail: east 3 feet at 6 seconds. A slight chance of showers in the morning, then a chance of showers with a slight chance of thunderstorms in the afternoon.

Saturday Night: East winds 5 to 10 knots. Seas 2 to 3 feet. Wave detail: east 2 feet at 6 seconds. A slight chance of showers and thunderstorms after midnight.

Sunday: Northeast winds 5 to 10 knots. Seas around 2 feet. Wave detail: east 2 feet at 5 seconds. A chance of showers and thunderstorms, mainly in the morning.

Sunday Night: East winds 5 to 10 knots. Seas around 2 feet. Wave detail: southeast 2 feet at 5 seconds. A slight chance of showers and thunderstorms after midnight.

Monday: East winds 5 to 10 knots. Seas around 2 feet. Wave detail: southeast 2 feet at 5 seconds. A chance of showers and thunderstorms.

Monday Night: East winds 5 to 10 knots. Seas around 2 feet. A slight chance of showers and thunderstorms after midnight.

winds and seas higher in and near thunderstorms.







Zone Forecast: Coastal waters from Southwest Pass of the Mississippi River to Port Fourchon Louisiana from 20 to 60 NM (GMZ572)

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