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 Nov 9 2025




Rest Of Tonight: North winds 25 to 30 knots. Seas 9 to 13 feet, occasionally to 17 feet. Wave detail: north 9 feet at 7 seconds.

Monday: North winds 25 to 30 knots. Seas 7 to 10 feet, occasionally to 13 feet. Wave detail: northeast 9 feet at 8 seconds and northwest 7 feet at 7 seconds.

Monday Night: North winds 20 to 25 knots, becoming northeast 15 to 20 knots after midnight. Seas 6 to 9 feet, occasionally to 11 feet, subsiding to 4 to 6 feet, occasionally to 8 feet after midnight. Wave detail: north 6 feet at 7 seconds, becoming north 6 feet at 6 seconds.

Tuesday: Northeast winds 10 to 15 knots with gusts up to 20 knots, becoming east 5 to 10 knots in the afternoon. Seas 2 to 4 feet, occasionally to 5 feet. Wave detail: north 4 feet at 6 seconds.

Tuesday Night: South winds 10 to 15 knots. Seas around 2 feet. Wave detail: south 2 feet at 3 seconds and east 2 feet at 6 seconds.

Wednesday: South winds 5 to 10 knots. Seas around 2 feet. Wave detail: southeast 1 foot at 5 seconds.

Wednesday Night: Southeast winds around 5 knots. Seas around 2 feet. Wave detail: south 2 feet at 6 seconds.

Thursday: East winds 5 to 10 knots. Seas around 2 feet. Wave detail: southeast 2 feet at 8 seconds and west 1 foot at 6 seconds.

Thursday Night: Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave detail: southeast 2 feet at 7 seconds and southwest 1 foot at 6 seconds.

Friday: Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave detail: southeast 3 feet at 7 seconds and southwest 1 foot at 6 seconds.

Friday Night: Southeast winds 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet.







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

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