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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: 1128 AM CST Tue Feb 17 2026

This Afternoon: Southeast winds around 10 knots. Seas around 2 feet. Wave detail: southeast 2 feet at 5 seconds.

Tonight: Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave detail: southeast 2 feet at 5 seconds.

Wednesday: South winds 10 to 15 knots. Seas 2 to 3 feet. Wave detail: south 2 feet at 5 seconds.

Wednesday Night: South winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave detail: southeast 3 feet at 5 seconds. A chance of showers in the evening.

Thursday: South winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave detail: southeast 4 feet at 6 seconds. A slight chance of showers in the afternoon.

Thursday Night: South winds 10 to 15 knots with gusts up to 20 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave detail: south 4 feet at 6 seconds. A slight 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, mainly in the morning.

Friday Night: South winds 10 to 15 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave detail: south 5 feet at 7 seconds. A slight chance of showers.

Saturday: South winds 10 to 15 knots. Seas around 4 feet, occasionally to 5 feet. Wave detail: south 4 feet at 7 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: West winds 10 to 15 knots, becoming north 20 to 25 knots after midnight. Seas 4 to 5 feet, occasionally to 6 feet, building to 5 to 7 feet, occasionally to 9 feet after midnight. Wave detail: south 5 feet at 8 seconds, becoming northwest 5 feet at 7 seconds. 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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