Coastal Waters Forecast for Coastal waters from Port Fourchon Louisiana to Lower Atchafalaya River LA from 20 to 60 NM (GMZ570) (Text-Only)
NWS Forecast for: Coastal waters from Port Fourchon Louisiana to Lower Atchafalaya River LA from 20 to 60 NM (GMZ570)
Issued by: National Weather Service New Orleans/Baton Rouge, LA
Last Update: 701 AM CDT Thu Sep 4 2025
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Today: North winds 5 to 10 knots, becoming east late. Seas around 2 feet.

Tonight: Southeast winds around 5 knots. Seas 1 foot or less.

Friday: East winds 5 to 10 knots. Seas 1 foot or less.

Friday Night: Southeast winds 5 to 10 knots. Seas 1 foot or less. A slight chance of showers.

Saturday: East winds around 5 knots. Seas 1 foot or less. A slight chance of thunderstorms. A slight chance of showers in the morning, then a chance of showers in the afternoon.

Saturday Night: East winds around 5 knots. Seas 1 foot or less. A slight chance of showers.

Sunday: Northeast winds 5 to 10 knots. Seas 1 foot or less, then around 2 feet in the afternoon. A chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon.

Sunday Night: Northeast winds 10 to 15 knots. Seas around 2 feet. A chance of showers. A slight chance of thunderstorms in the evening, then a chance of thunderstorms after midnight.

Monday: Northeast winds around 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. A chance of showers and thunderstorms.

Monday Night: Northeast winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. A chance of showers with a slight chance of thunderstorms.

winds and seas higher in and near thunderstorms.







Zone Forecast: Coastal waters from Port Fourchon Louisiana to Lower Atchafalaya River LA from 20 to 60 NM (GMZ570)

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