| 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: 206 PM CDT Sat Apr 4 2026 |  |
| This Afternoon: Southeast winds around 10 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave detail: southeast 4 feet at 7 seconds. A slight chance of showers and thunderstorms early, then a chance of showers and thunderstorms late. Tonight: South winds 5 to 10 knots. Seas 2 to 3 feet. Wave detail: southeast 3 feet at 7 seconds. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Sunday: Southwest winds 5 to 10 knots, becoming north 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Wave detail: southeast 3 feet at 8 seconds. Patchy fog in the morning. A chance of thunderstorms. Showers. Sunday Night: Northeast winds 15 to 20 knots, increasing to 20 to 25 knots after midnight. Seas 2 to 4 feet, occasionally to 5 feet. Wave detail: northeast 4 feet at 4 seconds and southeast 3 feet at 8 seconds. Showers likely. A chance of thunderstorms, mainly in the evening. Monday: Northeast winds 20 to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave detail: east 4 feet at 5 seconds. A chance of showers with a slight chance of thunderstorms in the morning, then a chance of showers in the afternoon. Monday Night: Northeast winds 15 to 20 knots with gusts up to 25 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave detail: northeast 3 feet at 3 seconds and southeast 2 feet at 6 seconds. A slight chance of showers. Tuesday: Northeast winds 20 to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave detail: northeast 3 feet at 3 seconds. A slight chance of showers. Tuesday Night: East winds 20 to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave detail: east 5 feet at 6 seconds. A slight chance of showers in the evening, then a chance of showers after midnight. Wednesday: East winds 20 to 25 knots, increasing to 25 to 30 knots in the afternoon. Seas 4 to 6 feet, occasionally to 8 feet. Wave detail: east 6 feet at 7 seconds. A chance of showers. A slight chance of thunderstorms in the afternoon. Wednesday Night: East winds 25 to 30 knots, diminishing to 20 to 25 knots after midnight. Seas 4 to 6 feet, occasionally to 8 feet. Wave detail: east 6 feet at 8 seconds. A chance of showers with a slight chance of thunderstorms. 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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