| NWS Forecast for: Coastal Waters from Port Fourchon LA to Lower Atchafalaya River LA out 20 nm (GMZ551) Issued by: National Weather Service New Orleans/Baton Rouge, LA Last Update: 537 AM CDT Wed Jul 15 2026 | |
| Today: Southeast winds around 5 knots. Seas 1 to 2 feet this morning, then 1 foot or less. Wave detail: south 1 foot at 5 seconds, becoming southeast 1 foot at 6 seconds. A slight chance of showers and thunderstorms this afternoon. Tonight: Southeast winds 5 to 10 knots. Seas 1 to 2 feet. Wave detail: southeast 2 feet at 5 seconds. Thursday: South winds around 5 knots. Seas 1 to 2 feet in the morning, then 1 foot or less. Wave detail: southeast 2 feet at 5 seconds, becoming southeast 1 foot at 6 seconds. Thursday Night: South winds 5 to 10 knots. Seas 1 to 2 feet. Wave detail: south 2 feet at 6 seconds. Friday: Southwest winds around 5 knots. Seas 1 to 2 feet. Wave detail: south 2 feet at 6 seconds. Friday Night: West winds 5 to 10 knots. Seas 1 to 2 feet. Wave detail: south 1 foot at 6 seconds. Saturday: Northwest winds 5 to 10 knots. Seas 1 to 2 feet in the morning, then 1 foot or less. Wave detail: west 1 foot at 3 seconds and south 1 foot at 6 seconds, becoming northwest 1 foot at 3 seconds and southeast 1 foot at 6 seconds. Saturday Night: West winds 10 to 15 knots. Seas around 2 feet. Wave detail: west 2 feet at 3 seconds and southeast 1 foot at 6 seconds. Sunday: Northwest winds 10 to 15 knots, becoming west 5 to 10 knots in the afternoon. Seas around 2 feet. Wave detail: northwest 2 feet at 3 seconds and southeast 1 foot at 6 seconds. Sunday Night: West winds 10 to 15 knots. Seas around 2 feet. Wave detail: west 2 feet at 3 seconds. winds and seas higher in and near thunderstorms. | |
| Zone Forecast: Coastal Waters from Port Fourchon LA to Lower Atchafalaya River LA out 20 nm (GMZ551) | |
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