| NWS Forecast for: Coastal Waters from Port Fourchon LA to Lower Atchafalaya River LA out 20 nm (GMZ551) Issued by: National Weather Service New Orleans/Baton Rouge, LA Last Update: 536 PM CDT Mon May 25 2026 |  |
| Tonight: Southeast winds 5 to 10 knots. Seas around 2 feet. Wave detail: southeast 2 feet at 5 seconds. A slight chance of showers and thunderstorms early this evening. A slight chance of showers and thunderstorms after midnight, then a chance of showers and thunderstorms late. Tuesday: South winds around 10 knots. Seas 2 to 3 feet. Wave detail: southeast 2 feet at 5 seconds. A chance of thunderstorms. A chance of showers. Tuesday Night: Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave detail: southeast 3 feet at 7 seconds and southeast 2 feet at 2 seconds. A slight chance of showers and thunderstorms in the evening. Wednesday: Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave detail: southeast 3 feet at 6 seconds. A chance of thunderstorms. A chance of showers in the morning, then showers likely in the afternoon. Wednesday Night: Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave detail: southeast 3 feet at 7 seconds. A chance of showers with a slight chance of thunderstorms in the evening, then showers with a chance of thunderstorms after midnight. Thursday: South winds 5 to 10 knots. Seas 2 to 3 feet. Wave detail: southeast 2 feet at 6 seconds. Thunderstorms likely. Showers. Thursday Night: South winds 5 to 10 knots. Seas 2 to 3 feet. Wave detail: southeast 2 feet at 6 seconds. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Friday: Southwest winds 5 to 10 knots. Seas 2 to 3 feet, subsiding to 1 to 2 feet in the afternoon. Wave detail: southeast 2 feet at 6 seconds. A chance of showers and thunderstorms. Friday Night: Southwest winds 5 to 10 knots. Seas 2 to 3 feet. Wave detail: southeast 2 feet at 6 seconds. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. Saturday: West winds 5 to 10 knots. Seas 2 to 3 feet. Wave detail: south 2 feet at 5 seconds. A slight chance of thunderstorms. A chance of showers, mainly in the morning. Saturday Night: West winds 5 to 10 knots. Seas around 2 feet. A slight chance of thunderstorms in the evening. A slight chance of showers. winds and seas higher in and near thunderstorms. | |
| Zone Forecast: Coastal Waters from Port Fourchon LA to Lower Atchafalaya River LA out 20 nm (GMZ551) | |
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