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Coastal Waters Forecast for Coastal Waters from Port Fourchon LA to Lower Atchafalaya River LA out 20 nm (GMZ550) (Text-Only)
NWS Forecast for: Coastal Waters from Port Fourchon LA to Lower Atchafalaya River LA out 20 nm (GMZ550)
Issued by: National Weather Service New Orleans/Baton Rouge, LA
Last Update: 437 AM CST Mon Feb 16 2026		Print

Today: Northeast winds 10 to 15 knots, diminishing to 5 to 10 knots late this morning and afternoon. Seas 2 to 3 feet. Wave detail: south 3 feet at 7 seconds and northeast 2 feet at 3 seconds.

Tonight: East winds 5 to 10 knots. Seas 1 to 2 feet. Wave detail: southwest 2 feet at 6 seconds and east 1 foot at 2 seconds.

Tuesday: Southeast winds 5 to 10 knots. Seas 1 to 2 feet. Wave detail: southeast 1 foot at 3 seconds and southeast 1 foot at 6 seconds.

Tuesday Night: South winds 5 to 10 knots. Seas 1 to 2 feet. Wave detail: southeast 2 feet at 5 seconds. A slight chance of showers.

Wednesday: South winds 5 to 10 knots. Seas 1 to 2 feet. Wave detail: south 2 feet at 4 seconds. A slight chance of showers.

Wednesday Night: South winds 5 to 10 knots, increasing to 10 to 15 knots after midnight. Seas 1 to 2 feet, building to 2 to 3 feet after midnight. Wave detail: south 2 feet at 5 seconds. A slight chance of showers in the evening.

Thursday: South winds 10 to 15 knots. Seas 2 to 3 feet. Wave detail: south 3 feet at 4 seconds. A slight chance of showers in the afternoon.

Thursday Night: South winds 10 to 15 knots. Seas 2 to 3 feet. Wave detail: south 3 feet at 6 seconds. A slight chance of showers in the evening, then a chance of showers after midnight.

Friday: South winds around 10 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave detail: south 3 feet at 6 seconds. A chance of showers.

Friday Night: South winds around 10 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave detail: south 4 feet at 7 seconds. A slight chance of showers in the evening, then a chance of showers after midnight.






Zone Forecast: Coastal Waters from Port Fourchon LA to Lower Atchafalaya River LA out 20 nm (GMZ550)

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