NWS Marine Forecast


   GMZ550-552-150515-  Coastal Waters from Port Fourchon LA to Lower Atchafalaya River LA  out 20 nm-  Coastal waters from the Southwest Pass of the Mississippi River to  Port Fourchon Louisiana out 20 NM-  1139 AM CDT Mon Jul 14 2025    TONIGHT  West winds around 5 knots. Seas 1 foot or less. Wave  Detail: South 1 foot at 5 seconds.  TUESDAY  Northwest winds 5 to 10 knots. Seas 1 foot or less. Wave  Detail: Northwest 1 foot at 3 seconds and south 1 foot at 5 seconds.  A chance of showers and thunderstorms, mainly in the morning.  TUESDAY NIGHT  West winds 5 to 10 knots. Seas 1 foot or less. Wave  Detail: West 1 foot at 4 seconds. A chance of showers and  thunderstorms after midnight.  WEDNESDAY  North winds 10 to 15 knots, diminishing to 5 to  10 knots in the afternoon. Seas around 2 feet in the morning, then  1 foot or less. Wave Detail: Northwest 2 feet at 3 seconds, becoming  northwest 1 foot at 4 seconds. Showers and thunderstorms likely.  WEDNESDAY NIGHT  West winds 5 to 10 knots, becoming north after  midnight. Seas 1 foot or less. Wave Detail: Northeast 1 foot at  2 seconds and west 1 foot at 3 seconds. A chance of showers and  thunderstorms in the evening, then showers with thunderstorms likely  after midnight.  THURSDAY  North winds around 10 knots, becoming south in the  afternoon. Seas 1 foot or less. Wave Detail: North 1 foot at  3 seconds. Showers with thunderstorms likely.  THURSDAY NIGHT  Southwest winds around 10 knots. Seas around  2 feet. Wave Detail: Southwest 2 feet at 3 seconds and east 1 foot  at 3 seconds. A chance of thunderstorms. Showers.  FRIDAY  Southwest winds 10 to 15 knots. Seas around 2 feet. Wave  Detail: Southwest 2 feet at 4 seconds and southeast 1 foot at  5 seconds. Thunderstorms likely. Showers.  FRIDAY NIGHT  South winds around 10 knots. Seas around 2 feet.  Wave Detail: South 2 feet at 5 seconds. A slight chance of showers  and thunderstorms in the evening, then a chance of showers and  thunderstorms after midnight.  SATURDAY  Southwest winds 5 to 10 knots. Seas 1 to 2 feet. Wave  Detail: South 2 feet at 5 seconds. Showers and thunderstorms likely,  mainly in the morning.  SATURDAY NIGHT  South winds around 5 knots. Seas 1 to 2 feet. A  chance of showers and thunderstorms after midnight.    Winds and seas higher in and near thunderstorms.    $$