| 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 Tue Jan 20 2026 |  |
| Today: East winds 10 to 15 knots with gusts up to 20 knots, increasing to 15 to 20 knots late. Seas 2 to 4 feet, occasionally to 5 feet. Wave detail: east 4 feet at 5 seconds. Tonight: East winds 15 to 20 knots with gusts up to 25 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave detail: east 5 feet at 6 seconds. Wednesday: Southeast winds 10 to 15 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave detail: east 5 feet at 7 seconds. A slight chance of showers in the afternoon. Wednesday Night: Southeast winds 10 to 15 knots. Seas around 4 feet, occasionally to 5 feet. Wave detail: southeast 4 feet at 8 seconds. A chance of showers. A slight chance of thunderstorms after midnight. Thursday: Southeast winds around 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave detail: southeast 4 feet at 8 seconds. A chance of showers with a slight chance of thunderstorms in the morning, then a slight chance of showers in the afternoon. Thursday Night: Southeast winds around 10 knots. Seas around 3 feet. Wave detail: southeast 3 feet at 7 seconds. A slight chance of showers in the evening, then a chance of showers with a slight chance of thunderstorms after midnight. Friday: East winds around 10 knots. Seas around 3 feet. Wave detail: southeast 3 feet at 7 seconds. A slight chance of thunderstorms in the morning. A chance of showers. Friday Night: East winds 10 to 15 knots. Seas around 3 feet. Wave detail: east 3 feet at 4 seconds and east 3 feet at 7 seconds. A chance of showers. Saturday: Southeast winds around 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave detail: southeast 4 feet at 5 seconds. A chance of showers in the morning, then showers likely in the afternoon. Saturday Night: North winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave detail: east 4 feet at 5 seconds and north 4 feet at 5 seconds. Showers likely. 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) | |
Visit your local NWS office at: https://www.weather.gov/lix |