| NWS Forecast for: Coastal waters from Port Fourchon Louisiana to Lower Atchafalaya River LA from 20 to 60 NM (GMZ570) Issued by: National Weather Service New Orleans/Baton Rouge, LA Last Update: 437 AM CST Thu Dec 11 2025 | |
| Today: Northeast winds 10 to 15 knots with gusts up to 20 knots, becoming east 5 to 10 knots late. Seas 2 to 3 feet. Wave detail: northeast 3 feet at 5 seconds and northwest 2 feet at 5 seconds. Tonight: Southeast winds 5 to 10 knots, becoming south after midnight. Seas around 2 feet. Wave detail: east 2 feet at 5 seconds. Friday: South winds 5 to 10 knots. Seas 1 foot or less. Wave detail: south 1 foot at 3 seconds and east 1 foot at 5 seconds. A slight chance of showers in the afternoon. Friday Night: Southeast winds around 5 knots. Seas 1 foot or less. Wave detail: south 1 foot at 4 seconds. A slight chance of showers. A slight chance of thunderstorms after midnight. Saturday: East winds 5 to 10 knots. Seas 1 foot or less. Wave detail: southeast 1 foot at 3 seconds and southwest 1 foot at 5 seconds. A slight chance of showers. Saturday Night: East winds 5 to 10 knots, becoming northeast after midnight. Seas around 2 feet. Wave detail: southeast 1 foot at 4 seconds and southwest 1 foot at 5 seconds. A slight chance of showers in the evening, then a chance of showers after midnight. Sunday: Northeast winds 15 to 20 knots. Seas 2 to 3 feet, building to 4 to 5 feet, occasionally to 6 feet in the afternoon. Wave detail: east 3 feet at 5 seconds and southwest 1 foot at 5 seconds, becoming northeast 5 feet at 5 seconds. A chance of showers, mainly in the morning. Sunday Night: Northeast winds 20 to 25 knots, diminishing to 15 to 20 knots after midnight. Seas 5 to 6 feet, occasionally to 8 feet. Wave detail: northeast 6 feet at 6 seconds. A slight chance of showers in the evening. Monday: Northeast winds 15 to 20 knots, diminishing to 10 to 15 knots in the afternoon. Seas 3 to 5 feet, occasionally to 6 feet. Wave detail: northeast 5 feet at 6 seconds. Monday Night: East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave detail: east 4 feet at 6 seconds. winds and seas higher in and near thunderstorms. | |
| Zone Forecast: Coastal waters from Port Fourchon Louisiana to Lower Atchafalaya River LA from 20 to 60 NM (GMZ570) | |
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