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Coastal Waters Forecast for Coastal waters from the Southwest Pass of the Mississippi River to Port Fourchon Louisiana out 20 NM (GMZ553) (Text-Only)

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: 536 AM CDT Thu Jun 4 2026

Small Craft Advisory Today: East winds 20 to 25 knots with gusts up to 30 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave detail: southeast 7 feet at 8 seconds. A chance of thunderstorms. Showers likely, mainly this morning. Tonight: East winds 20 to 25 knots with gusts up to 30 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave detail: southeast 7 feet at 8 seconds. A chance of showers. A slight chance of thunderstorms in the evening, then a chance of thunderstorms after midnight. Friday: Southeast winds 15 to 20 knots, increasing to 20 to 25 knots in the afternoon. Seas 4 to 6 feet, occasionally to 8 feet. Wave detail: southeast 6 feet at 8 seconds. A chance of thunderstorms. Showers. Friday Night: Southeast winds 20 to 25 knots, diminishing to 10 to 15 knots after midnight. Seas 4 to 6 feet, occasionally to 8 feet. Wave detail: southeast 5 feet at 7 seconds. Showers likely. A chance of thunderstorms, mainly in the evening. Saturday: South winds 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave detail: southeast 4 feet at 7 seconds. A chance of thunderstorms. Showers likely, mainly in the morning. Saturday Night: South winds around 10 knots. Seas 2 to 3 feet. Wave detail: southeast 3 feet at 7 seconds. A slight chance of showers and thunderstorms in the evening. Sunday: Southeast winds around 10 knots. Seas 2 to 3 feet. Wave detail: south 3 feet at 6 seconds. Sunday Night: Southeast winds around 10 knots. Seas 2 to 3 feet. Wave detail: south 2 feet at 6 seconds. Monday: Southeast winds 5 to 10 knots. Seas around 2 feet. Wave detail: southeast 2 feet at 5 seconds. Monday Night: Southeast winds 5 to 10 knots. Seas around 2 feet. Wave detail: southeast 2 feet at 5 seconds. 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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