| 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: 437 PM CST Tue Jan 20 2026 | |
| Tonight: East winds 15 to 20 knots with gusts up to 25 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave detail: east 5 feet at 6 seconds. Wednesday: Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave detail: east 5 feet at 7 seconds. A slight chance of showers in the afternoon. Wednesday Night: Southeast winds 10 to 15 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave detail: southeast 4 feet at 8 seconds. A chance of showers. Thursday: Southeast winds 5 to 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave detail: southeast 4 feet at 8 seconds. A chance of showers. Thursday Night: Southeast winds 5 to 10 knots. Seas around 3 feet. Wave detail: southeast 3 feet at 7 seconds. A chance of showers. A slight chance of thunderstorms after midnight. Friday: Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave detail: southeast 3 feet at 7 seconds. A slight chance of thunderstorms in the morning. A chance of showers. Friday Night: East winds 10 to 15 knots with gusts up to 20 knots. Seas around 3 feet. Wave detail: east 3 feet at 6 seconds. A chance of showers. Saturday: Southeast winds 10 to 15 knots, becoming south 15 to 20 knots in the afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave detail: southeast 4 feet at 5 seconds. A chance of showers in the morning, then showers likely in the afternoon. Saturday Night: South winds 15 to 20 knots, becoming northwest after midnight. Seas 3 to 4 feet, occasionally to 5 feet, building to 4 to 6 feet, occasionally to 8 feet after midnight. Wave detail: south 4 feet at 5 seconds, becoming northwest 5 feet at 5 seconds and southeast 3 feet at 6 seconds. Showers. Sunday: North winds 20 to 25 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave detail: north 5 feet at 6 seconds. Showers likely. Sunday Night: North winds 20 to 25 knots. Seas 6 to 7 feet, occasionally to 9 feet. 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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