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: 1116 AM CDT Thu Apr 3 2025
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Rest Of Today: Southeast winds 20 to 25 knots, diminishing to 15 to 20 knots this afternoon. Seas 7 to 10 feet, occasionally to 13 feet. Wave detail: south 9 feet at 9 seconds.

Tonight: Southeast winds 15 to 20 knots with gusts up to 30 knots. Seas 7 to 8 feet, occasionally to 10 feet. Wave detail: southeast 8 feet at 9 seconds.

Friday: Southeast winds 20 to 25 knots, diminishing to 15 to 20 knots in the afternoon. Seas 7 to 9 feet, occasionally to 11 feet. Wave detail: southeast 8 feet at 8 seconds.

Friday Night: Southeast winds 20 to 25 knots with gusts up to 30 knots. Seas 7 to 9 feet, occasionally to 11 feet. Wave detail: southeast 9 feet at 8 seconds.

Saturday: Southeast winds 20 to 25 knots with gusts up to 30 knots. Seas 7 to 10 feet, occasionally to 13 feet. Wave detail: southeast 9 feet at 8 seconds.

Saturday Night: South winds 15 to 20 knots with gusts up to 25 knots. Seas 7 to 9 feet, occasionally to 11 feet. Wave detail: south 8 feet at 9 seconds. A slight chance of showers in the evening, then a chance of showers with a slight chance of thunderstorms after midnight.

Sunday: West winds 15 to 20 knots. Seas 6 to 7 feet, occasionally to 9 feet. Wave detail: south 7 feet at 8 seconds and northwest 4 feet at 6 seconds. A chance of thunderstorms. Showers.

Sunday Night: Northwest winds 15 to 20 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave detail: southeast 6 feet at 8 seconds and northwest 4 feet at 6 seconds. A chance of thunderstorms. Showers.

Monday: North winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave detail: northwest 5 feet at 6 seconds and east 5 feet at 7 seconds. A chance of thunderstorms. Showers likely, mainly in the morning.

Monday Night: North winds 15 to 20 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave detail: north 4 feet at 6 seconds. A slight chance of showers in the evening.

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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