| 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: 537 AM CDT Mon Jul 13 2026 |  |
| Today: West winds 5 to 10 knots. Seas around 2 feet. Wave detail: west 2 feet at 3 seconds and southeast 2 feet at 6 seconds. Showers likely this morning. A chance of thunderstorms. A chance of showers this afternoon. Tonight: West winds 5 to 10 knots. Seas around 2 feet. Wave detail: west 2 feet at 3 seconds and southeast 2 feet at 6 seconds. A chance of showers and thunderstorms after midnight. Tuesday: West winds 5 to 10 knots. Seas around 2 feet. Wave detail: northwest 1 foot at 3 seconds and southeast 1 foot at 6 seconds. A chance of showers and thunderstorms, mainly in the morning. Tuesday Night: Southwest winds 5 to 10 knots. Seas around 2 feet. Wave detail: southeast 2 feet at 6 seconds and west 1 foot at 3 seconds. A slight chance of showers and thunderstorms in the evening. Wednesday: Southwest winds around 5 knots. Seas around 2 feet. Wave detail: south 2 feet at 6 seconds and west 1 foot at 3 seconds. Wednesday Night: Southwest winds around 5 knots. Seas around 2 feet. Wave detail: south 2 feet at 7 seconds. Thursday: West winds around 5 knots. Seas around 2 feet. Wave detail: south 2 feet at 6 seconds. Thursday Night: Southwest winds 5 to 10 knots. Seas around 2 feet. Wave detail: south 2 feet at 7 seconds. A slight chance of showers and thunderstorms after midnight. Friday: Northwest winds 5 to 10 knots. Seas around 2 feet. Wave detail: south 2 feet at 7 seconds. A slight chance of showers and thunderstorms. Friday Night: West winds 5 to 10 knots, increasing to 10 to 15 knots after midnight. Seas 2 to 3 feet. Wave detail: west 2 feet at 3 seconds and south 2 feet at 6 seconds. A slight 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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