Coastal Waters Forecast for Coastal waters from the Southwest Pass of the Mississippi River to Port Fourchon Louisiana out 20 NM (GMZ552) (Text-Only)
NWS Forecast for: Coastal waters from the Southwest Pass of the Mississippi River to Port Fourchon Louisiana out 20 NM (GMZ552)
Issued by: National Weather Service New Orleans/Baton Rouge, LA
Last Update: 248 PM CDT Thu Jun 19 2025


Tonight: South winds 5 to 10 knots. Seas 1 to 2 feet. Wave detail: south 2 feet at 5 seconds. A slight chance of showers and thunderstorms early this evening.

Friday: Southwest winds around 5 knots. Seas 1 to 2 feet. Wave detail: south 2 feet at 5 seconds. A slight chance of showers and thunderstorms.

Friday Night: Southwest winds 5 to 10 knots. Seas 1 to 2 feet. Wave detail: south 1 foot at 6 seconds.

Saturday: South winds 5 to 10 knots. Seas 1 to 2 feet. Wave detail: south 1 foot at 7 seconds. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon.

Saturday Night: Southeast winds 5 to 10 knots. Seas 1 to 2 feet. Wave detail: south 2 feet at 6 seconds. A chance of showers and thunderstorms after midnight.

Sunday: East winds 5 to 10 knots. Seas 1 to 2 feet. Wave detail: south 2 feet at 5 seconds. Showers likely with a chance of thunderstorms.

Sunday Night: Southeast winds 5 to 10 knots. Seas around 2 feet. Wave detail: southeast 2 feet at 4 seconds. A chance of showers and thunderstorms.

Monday: East winds 5 to 10 knots. Seas 1 to 2 feet. Wave detail: southeast 2 feet at 5 seconds. A chance of thunderstorms. Showers.

Monday Night: Southeast winds 10 to 15 knots. Seas around 2 feet. Wave detail: southeast 2 feet at 5 seconds. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight.

Tuesday: East winds 10 to 15 knots. Seas 2 to 3 feet. Wave detail: southeast 3 feet at 5 seconds. A chance of thunderstorms. Showers.

Tuesday Night: Southeast winds 10 to 15 knots. Seas 2 to 3 feet. 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 (GMZ552)

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