| NWS Forecast for: Coastal waters from the Southwest Pass of the Mississippi River to Port Fourchon Louisiana out 20 NM (GMZ553) Issued by: National Weather Service New Orleans/Baton Rouge, LA Last Update: 156 PM CDT Mon May 25 2026 |  |
| This Afternoon: South winds 5 to 10 knots. Seas around 2 feet. Wave detail: south 2 feet at 5 seconds. A chance of thunderstorms. Showers likely early, then a chance of showers late. Tonight: Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave detail: south 2 feet at 5 seconds. A chance of showers and thunderstorms. Tuesday: South winds around 10 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. Tuesday Night: Southeast winds 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave detail: southeast 3 feet at 7 seconds. A slight chance of showers and thunderstorms in the evening. Wednesday: Southeast winds around 10 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave detail: southeast 3 feet at 7 seconds. A slight chance of showers and thunderstorms in the morning, then showers likely with a chance of thunderstorms in the afternoon. Wednesday Night: Southeast winds around 10 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 likely with a chance of thunderstorms after midnight. Thursday: South winds 5 to 10 knots. Seas 2 to 3 feet. Wave detail: south 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: South winds 5 to 10 knots. Seas 2 to 3 feet. Wave detail: south 2 feet at 6 seconds. A chance of thunderstorms. Showers likely, mainly in the morning. Friday Night: South winds 5 to 10 knots, becoming southwest 10 to 15 knots after midnight. Seas 2 to 3 feet. Wave detail: south 1 foot at 6 seconds. A chance of showers and thunderstorms. winds and seas higher in and near thunderstorms. | |
| Zone Forecast: Coastal waters from the Southwest Pass of the Mississippi River to Port Fourchon Louisiana out 20 NM (GMZ553) | |
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