| 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 AM CST Sat Jan 17 2026 |  |
Today: North winds 15 to 20 knots with gusts up to 30 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave detail: north 3 feet at 4 seconds and west 2 feet at 5 seconds. A chance of showers. Tonight: North winds 20 to 25 knots with gusts up to 35 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave detail: north 4 feet at 4 seconds. A chance of showers. Sunday: North winds 15 to 20 knots, becoming northwest 10 to 15 knots in the afternoon. Gusts up to 30 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave detail: northwest 4 feet at 4 seconds. Sunday Night: North winds 10 to 15 knots with gusts up to 20 knots, diminishing to 5 to 10 knots after midnight. Seas 1 to 2 feet. Wave detail: northwest 2 feet at 3 seconds. Monday: North winds 5 to 10 knots. Seas 1 foot or less. Wave detail: north 1 foot at 2 seconds. Monday Night: Northeast winds 5 to 10 knots, increasing to 10 to 15 knots with gusts up to 20 knots after midnight. Seas 1 to 2 feet. Wave detail: northeast 2 feet at 3 seconds. Tuesday: Northeast winds 15 to 20 knots, diminishing to 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Wave detail: northeast 3 feet at 4 seconds. Tuesday Night: East winds 10 to 15 knots. Seas 2 to 3 feet. Wave detail: east 2 feet at 4 seconds. Wednesday: Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave detail: southeast 3 feet at 5 seconds. A slight chance of showers in the afternoon. Wednesday Night: Southeast winds 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave detail: southeast 4 feet at 6 seconds. A slight chance of showers in the evening, then a chance of showers after midnight. | |
| Zone Forecast: Coastal Waters from Port Fourchon LA to Lower Atchafalaya River LA out 20 nm (GMZ550) | |
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