NWS Marine Forecast


   GMZ300-131015-  Synopsis for High Island to the Matagorda Ship Channel out  60 nautical miles including Galveston and Matagorda Bays  422 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.    $$
   GMZ335-131015-  Galveston Bay-  422 PM CDT Thu Jun 12 2025    Small Craft Should Exercise Caution    TONIGHT  South winds around 10 to 15 knots, rising to 15 to 20  knots late. Bay waters slightly choppy, rising to choppy late. A  chance of showers and thunderstorms in the evening. A chance of  showers and thunderstorms after midnight.  FRIDAY  South winds 10 to 15 knots. Bay waters slightly choppy.  A chance of thunderstorms. A chance of showers.  FRIDAY NIGHT  South winds 10 to 15 knots. Bay waters slightly  choppy. A chance of showers and thunderstorms early in the  evening.  SATURDAY  South winds around 10 knots. Bay waters smooth to  slightly choppy. A chance of showers and thunderstorms.  SATURDAY NIGHT  South winds around 10 knots. Bay waters smooth  to slightly choppy.  SUNDAY  South winds 5 to 10 knots. Bay waters smooth. Showers  likely with a chance of thunderstorms.  SUNDAY NIGHT  South winds 5 to 10 knots. Bay waters smooth.  MONDAY  South winds 5 to 10 knots. Bay waters smooth. Showers  likely with a chance of thunderstorms.  MONDAY NIGHT  South winds 10 to 15 knots. Bay waters slightly  choppy.    Winds and waves higher in and near thunderstorms.    $$