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: 1127 PM CST Sun Jan 4 2026
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Rest Of Tonight: Northeast winds around 5 knots. Seas around 2 feet. Wave detail: northeast 2 feet at 4 seconds and southwest 1 foot at 5 seconds.

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

Monday Night: Southeast winds 5 to 10 knots, becoming south after midnight. Seas 1 foot or less, then around 2 feet after midnight. Wave detail: southeast 1 foot at 4 seconds, becoming south 2 feet at 3 seconds.

Tuesday: Southwest winds 5 to 10 knots. Seas around 2 feet. Wave detail: southwest 2 feet at 4 seconds.

Tuesday Night: Southwest winds 5 to 10 knots. Seas around 2 feet. Wave detail: southwest 2 feet at 5 seconds.

Wednesday: Southwest winds 5 to 10 knots. Seas around 2 feet. Wave detail: southwest 2 feet at 6 seconds.

Wednesday Night: South winds 5 to 10 knots, increasing to 10 to 15 knots with gusts up to 20 knots after midnight. Seas 2 to 3 feet. Wave detail: south 2 feet at 4 seconds.

Thursday: South winds 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave detail: south 4 feet at 4 seconds. A slight chance of showers.

Thursday Night: South winds around 15 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave detail: south 5 feet at 7 seconds. A chance of showers.

Friday: South winds 10 to 15 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave detail: south 5 feet at 7 seconds. A chance of showers with a slight chance of thunderstorms in the morning, then showers likely with a chance of thunderstorms in the afternoon.

Friday Night: Southwest winds 10 to 15 knots, becoming northwest 15 to 20 knots after midnight. Seas 4 to 5 feet, occasionally to 6 feet. A chance of thunderstorms in the evening. A chance of showers.

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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