| 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 PM CST Fri Jan 23 2026 | |
Tonight: Northeast winds 15 to 20 knots with gusts up to 25 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave detail: east 3 feet at 3 seconds and southeast 1 foot at 7 seconds. A slight chance of showers until early morning, then a chance of showers late. Saturday: East winds 15 to 20 knots, becoming southeast 10 to 15 knots in the afternoon. Seas 2 to 4 feet, occasionally to 5 feet. Wave detail: east 3 feet at 5 seconds. A chance of showers with a slight chance of thunderstorms in the morning, then showers likely with a chance of thunderstorms in the afternoon. Saturday Night: South winds 15 to 20 knots with gusts up to 25 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave detail: south 4 feet at 5 seconds. A chance of thunderstorms. Showers likely, mainly in the evening. Sunday: Southwest winds 20 to 25 knots, becoming northwest in the afternoon. Seas 3 to 5 feet, occasionally to 6 feet. Wave detail: south 5 feet at 6 seconds. Showers with a chance of thunderstorms. Sunday Night: Northwest winds 20 to 25 knots, becoming north 25 to 30 knots after midnight. Seas 4 to 6 feet, occasionally to 8 feet. Wave detail: west 4 feet at 5 seconds and south 2 feet at 7 seconds. A slight chance of showers in the evening. Monday: North winds 20 to 25 knots with gusts up to 30 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave detail: west 3 feet at 6 seconds and southeast 1 foot at 7 seconds. Monday Night: North winds 20 to 25 knots, diminishing to 15 to 20 knots after midnight. Seas 2 to 4 feet, occasionally to 5 feet. Wave detail: north 3 feet at 3 seconds. Tuesday: Northeast winds 10 to 15 knots, diminishing to 5 to 10 knots in the afternoon. Seas 1 to 2 feet. Wave detail: northeast 2 feet at 2 seconds. Tuesday Night: North winds 5 to 10 knots. Seas 1 foot or less. Wednesday: North winds 5 to 10 knots. Seas 1 to 2 feet. Wednesday Night: North winds 10 to 15 knots, increasing to 15 to 20 knots after midnight. Seas 1 to 2 feet, building to 2 to 3 feet after midnight. winds and seas higher in and near thunderstorms. | |
| Zone Forecast: Coastal Waters from Port Fourchon LA to Lower Atchafalaya River LA out 20 nm (GMZ550) | |
Visit your local NWS office at: https://www.weather.gov/lix |