NWS Marine Forecast


   GMZ400-102100-  308 AM CDT Mon Aug 10 2026    .Synopsis for Lower Atchafalaya River LA to High Island TX out  60 NM including Sabine and Calcasieu Lakes and Vermilion and Cote  Blanche Bays...    Mainly light south to southeasterly winds with low seas are expected  to continue into at least the middle of this week as a surface high  pressure system ridge develops across the northern Gulf. Daily  chance for showers and thunderstorms through Tues as a weak coastal  trough skirts along the northern Gulf waters. The best chance of  seeing activity is favored closer to shore during the afternoon  hours. Dry conditions return Wednesday and beyond.    $$
   GMZ475-102100-  Coastal waters from Lower Atchafalaya River to Intracoastal City  LA from 20 to 60 NM-  308 AM CDT Mon Aug 10 2026    TODAY  South winds 5 to 10 knots. Seas around 2 feet this  morning, then 1 foot or less. Wave Detail: South 2 feet at  4 seconds, becoming south 1 foot at 4 seconds. A chance of  showers and thunderstorms this morning, then a slight chance of  showers and thunderstorms early this afternoon.  TONIGHT  Southeast winds 5 to 10 knots. Seas around 2 feet.  Wave Detail: Southeast 2 feet at 4 seconds.  TUESDAY  Southeast winds around 5 knots. Seas 1 foot or less,  then around 2 feet in the afternoon. Wave Detail: Southeast  1 foot at 5 seconds, becoming southeast 2 feet at 5 seconds. A  slight chance of showers and thunderstorms in the morning.  TUESDAY NIGHT  South winds 5 to 10 knots. Seas around 2 feet.  Wave Detail: Southeast 2 feet at 5 seconds.  WEDNESDAY  South winds 5 to 10 knots. Seas around 2 feet. Wave  Detail: Southeast 2 feet at 6 seconds. A slight chance of showers  and thunderstorms in the morning.  WEDNESDAY NIGHT  South winds 5 to 10 knots. Seas around 2 feet.  Wave Detail: South 2 feet at 5 seconds.  THURSDAY  South winds 5 to 10 knots. Seas around 2 feet.  THURSDAY NIGHT  South winds 10 to 15 knots. Seas 2 to 3 feet.  FRIDAY  South winds 5 to 10 knots. Seas around 2 feet.  FRIDAY NIGHT  South winds 5 to 10 knots. Seas around 2 feet.    Winds and seas higher in and near thunderstorms.    $$