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 Tue Feb 24 2026




Rest Of Tonight: Southwest winds 15 to 20 knots. Gusts up to 30 knots late. Seas 3 to 5 feet, occasionally to 6 feet. Wave detail: southwest 5 feet at 5 seconds and northeast 1 foot at 5 seconds.

Wednesday: South winds 15 to 20 knots with gusts up to 30 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave detail: southwest 5 feet at 6 seconds.

Wednesday Night: South winds 15 to 20 knots with gusts up to 30 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave detail: southwest 6 feet at 7 seconds.

Thursday: South winds 15 to 20 knots, diminishing to 10 to 15 knots in the afternoon. Seas 5 to 6 feet, occasionally to 8 feet. Wave detail: southwest 6 feet at 7 seconds. A slight chance of showers.

Thursday 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 in the evening, then a chance of showers after midnight.

Friday: West winds 5 to 10 knots, becoming north in the afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave detail: southeast 4 feet at 7 seconds. A chance of showers.

Friday Night: Northeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave detail: south 3 feet at 6 seconds and northeast 2 feet at 5 seconds. A slight chance of showers.

Saturday: Northeast winds around 10 knots. Seas 2 to 3 feet. Wave detail: northeast 2 feet at 4 seconds and south 2 feet at 6 seconds.

Saturday Night: East winds around 10 knots. Seas around 2 feet. Wave detail: east 2 feet at 4 seconds and south 1 foot at 6 seconds.

Sunday: East winds around 10 knots. Seas around 2 feet. Wave detail: east 2 feet at 4 seconds and southwest 1 foot at 5 seconds.

Sunday Night: East winds around 10 knots. Seas 2 to 3 feet. A slight chance of showers in the evening.







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

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