NWS Marine Forecast


   GMZ300-131630-  Synopsis for High Island to the Matagorda Ship Channel out  60 nautical miles including Galveston and Matagorda Bays  1113 PM CDT Thu Jun 12 2025    .Synopsis For High Island to the Matagorda Ship Channel Out 60 NM  including Galveston and Matagorda Bays.    Recent wind data offshore suggest seas will be slow to decrease  today. With winds expected to increase again this evening and  tonight, we opted to issue a Small Craft Advisory due to hazardous  seas for the offshore Gulf waters through Friday morning. Showers  and thunderstorm activity will diminish later this afternoon.  However, we expect an increasing chance of thunderstorms once  again late tonight through Friday morning. The forecast for the  weekend into early next week features light to moderate onshore  flow and a continued daily risk of showers and thunderstorms.  Higher winds and waves can be expected in the vicinity of any  thunderstorm.    $$
   GMZ350-355-131630-  Coastal waters from Freeport to Matagorda Ship Channel TX out  20 NM-Coastal waters from High Island to Freeport TX out 20 NM-  1113 PM CDT Thu Jun 12 2025    Small Craft Should Exercise Caution    REST OF TONIGHT  South winds 15 to 20 knots. Seas 4 to 6 feet,  occasionally to 8 feet. Wave Detail: South 5 feet at 6 seconds. A  chance of showers and thunderstorms late this evening, then a  slight chance of showers and thunderstorms.  FRIDAY  South winds 15 to 20 knots, easing to around 15 knots  late. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail:  South 5 feet at 6 seconds. A chance of showers and thunderstorms.  FRIDAY NIGHT  South winds 10 to 15 knots. Seas 3 to 4 feet.  Wave Detail: Southeast 4 feet at 6 seconds.  SATURDAY  South winds 10 to 15 knots. Seas 3 to 4 feet. Wave  Detail: South 4 feet at 6 seconds. A chance of showers and  thunderstorms late in the morning.  SATURDAY NIGHT  Southeast winds 10 to 15 knots. Seas 3 to  4 feet. Wave Detail: Southeast 4 feet at 7 seconds.  SUNDAY  South winds 10 to 15 knots. Seas around 3 feet. Wave  Detail: Southeast 3 feet at 7 seconds. A chance of showers and  thunderstorms.  SUNDAY NIGHT  South winds 10 to 15 knots. Seas around 3 feet.  MONDAY  South winds 10 to 15 knots. Seas around 3 feet. A  chance of showers and thunderstorms.  MONDAY NIGHT  South winds 10 to 15 knots. Seas around 3 feet.  TUESDAY  South winds 10 to 15 knots. Seas around 3 feet. A  chance of showers and thunderstorms.  TUESDAY NIGHT  South winds 15 to 20 knots. Seas 3 to 4 feet.    Winds and seas higher in and near thunderstorms.    $$