| 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 Thu Nov 20 2025 |  |
Tonight: Southeast winds 15 to 20 knots with gusts up to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave detail: southeast 5 feet at 7 seconds. A chance of showers. A slight chance of thunderstorms late this evening and overnight. Friday: 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 chance of showers with a slight chance of thunderstorms. Friday Night: Southwest winds 5 to 10 knots. Seas around 3 feet. Wave detail: southeast 3 feet at 6 seconds. A slight chance of showers and thunderstorms in the evening. Saturday: Northwest winds around 5 knots. Seas 2 to 3 feet. Wave detail: southeast 3 feet at 6 seconds. A slight chance of showers in the morning. Saturday Night: Northwest winds 5 to 10 knots. Seas around 2 feet. Wave detail: southeast 2 feet at 6 seconds. Sunday: Northeast winds 5 to 10 knots. Seas around 2 feet. Wave detail: south 2 feet at 6 seconds. Sunday Night: Southeast winds 5 to 10 knots, increasing to 10 to 15 knots after midnight. Seas around 2 feet. Wave detail: south 2 feet at 6 seconds. Monday: Southeast winds 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave detail: southeast 3 feet at 6 seconds. Monday Night: South winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave detail: southeast 4 feet at 6 seconds. A slight chance of showers in the evening, then a chance of showers after midnight. Tuesday: South winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave detail: south 4 feet at 6 seconds. A chance of showers. Tuesday Night: South winds around 10 knots. Seas around 3 feet. A slight chance of showers in the evening, then a chance of showers after midnight. 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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