| 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 Fri Jan 23 2026 |  |
| Today: Northeast winds 5 to 10 knots, increasing to 10 to 15 knots with gusts up to 20 knots this afternoon. Seas 2 to 3 feet. Wave detail: northeast 3 feet at 4 seconds and southeast 2 feet at 7 seconds. A slight chance of thunderstorms. Showers likely until late afternoon, then a chance of showers late. Visibility 1 nm or less early this morning, then 1 nm or less early this afternoon. Tonight: East winds 15 to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave detail: east 4 feet at 6 seconds. A chance of showers with a slight chance of thunderstorms. Saturday: Southeast winds around 15 knots with gusts up to 20 knots. Seas around 3 feet. Wave detail: southeast 3 feet at 6 seconds. Showers likely with a slight chance of thunderstorms. Saturday Night: South winds 15 to 20 knots with gusts up to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave detail: south 4 feet at 5 seconds. A chance of showers with a slight chance of thunderstorms. Sunday: South winds 15 to 20 knots, becoming west in the afternoon. Seas 4 to 6 feet, occasionally to 8 feet. Wave detail: southeast 5 feet at 6 seconds and west 4 feet at 5 seconds. Showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Sunday Night: Northwest winds 20 to 25 knots with gusts up to 30 knots. Seas 6 to 9 feet, occasionally to 11 feet, building to 8 to 9 feet, occasionally to 11 feet after midnight. Wave detail: west 8 feet at 6 seconds, becoming northwest 8 feet at 7 seconds and northwest 5 feet at 4 seconds. A chance of showers with a slight chance of thunderstorms in the evening, then a slight chance of showers after midnight. Monday: North winds 20 to 25 knots. Seas 6 to 9 feet, occasionally to 11 feet, subsiding to 5 to 7 feet, occasionally to 9 feet in the afternoon. Wave detail: northwest 8 feet at 7 seconds, becoming north 6 feet at 6 seconds and north 4 feet at 3 seconds. A slight chance of showers in the morning. Monday Night: North winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave detail: northwest 4 feet at 6 seconds. Tuesday: Northeast winds 10 to 15 knots, diminishing to 5 to 10 knots in the afternoon. Seas 2 to 3 feet. Wave detail: north 3 feet at 5 seconds. Tuesday Night: East winds 5 to 10 knots. Seas around 2 feet. Wave detail: northeast 2 feet at 4 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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