| NWS Forecast for: Coastal Waters from Port Fourchon LA to Lower Atchafalaya River LA out 20 nm (GMZ550) Issued by: National Weather Service New Orleans/Baton Rouge, LA Last Update: 1127 PM CST Wed Nov 19 2025 | |
| Rest Of Tonight: Southeast winds 5 to 10 knots. Seas 1 to 2 feet. Wave detail: southeast 2 feet at 5 seconds. Thursday: Southeast winds 5 to 10 knots. Seas 1 to 2 feet, building to 2 to 3 feet in the afternoon. Wave detail: southeast 2 feet at 5 seconds. Patchy dense fog in the morning with visibility 1 nm or less. Thursday Night: Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave detail: southeast 4 feet at 6 seconds. A slight chance of showers in the evening, then a chance of showers after midnight. Friday: South winds 10 to 15 knots with gusts up to 20 knots, diminishing to 5 to 10 knots in the afternoon. Seas 2 to 4 feet, occasionally to 5 feet. Wave detail: south 4 feet at 6 seconds. A chance of showers with a slight chance of thunderstorms. Friday Night: South winds around 5 knots. Seas around 2 feet. Wave detail: south 2 feet at 6 seconds. Saturday: Southwest winds around 5 knots. Seas 1 to 2 feet. Wave detail: southeast 2 feet at 6 seconds. Saturday Night: Southwest winds around 5 knots. Seas 1 to 2 feet. Wave detail: southeast 2 feet at 6 seconds. Sunday: Northeast winds 5 to 10 knots, becoming southeast in the afternoon. Seas 1 to 2 feet. Wave detail: southeast 2 feet at 6 seconds. Sunday Night: Southeast winds 5 to 10 knots, increasing to 10 to 15 knots after midnight. Seas 1 to 2 feet. Wave detail: south 2 feet at 6 seconds. Monday: Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave detail: southeast 3 feet at 5 seconds. A slight chance of showers. Monday Night: South winds 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. A slight chance of showers in the evening, then a chance of showers with a slight chance of thunderstorms after midnight. winds and seas higher in and near thunderstorms. | |
| Zone Forecast: Coastal Waters from Port Fourchon LA to Lower Atchafalaya River LA out 20 nm (GMZ550) | |
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