| 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: 537 PM CDT Sun Aug 16 2026 | |
| Tonight: South winds around 5 knots, becoming southwest after midnight. Seas 1 foot or less. Wave detail: southeast 1 foot at 5 seconds. Monday: West winds around 5 knots. Seas 1 foot or less. Wave detail: southeast 1 foot at 5 seconds. Monday Night: Southwest winds around 5 knots, increasing to 5 to 10 knots after midnight. Seas 1 foot or less. Wave detail: southeast 1 foot at 4 seconds and southeast 1 foot at 9 seconds. Tuesday: West winds 5 to 10 knots. Seas 1 foot or less. Wave detail: southwest 1 foot at 3 seconds and southeast 1 foot at 6 seconds. Tuesday Night: West winds 5 to 10 knots. Seas 1 foot or less, then around 2 feet after midnight. Wave detail: west 1 foot at 3 seconds and southeast 1 foot at 6 seconds. Wednesday: West winds 5 to 10 knots. Seas around 2 feet. Wave detail: west 1 foot at 3 seconds and southeast 1 foot at 6 seconds. Wednesday Night: West winds 5 to 10 knots. Seas 1 foot or less, then around 2 feet after midnight. Wave detail: west 1 foot at 3 seconds and southeast 1 foot at 6 seconds, becoming west 1 foot at 3 seconds and southeast 1 foot at 5 seconds. Thursday: West winds 5 to 10 knots. Seas around 2 feet in the morning, then 1 foot or less. Wave detail: west 1 foot at 3 seconds. A slight chance of showers and thunderstorms in the morning. Thursday Night: West winds 5 to 10 knots. Seas 1 foot or less, then around 2 feet after midnight. Wave detail: west 1 foot at 4 seconds. Friday: West winds 5 to 10 knots. Seas around 2 feet in the morning, then 1 foot or less. Wave detail: west 1 foot at 3 seconds, becoming southwest 1 foot at 4 seconds. A slight chance of showers and thunderstorms. Friday Night: West winds 5 to 10 knots. Seas 1 foot or less, then around 2 feet after midnight. A slight chance of showers and thunderstorms after midnight. 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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