NWS Marine Forecast



 Hazardous marine condition(s):
 Small Craft Advisory
   GMZ300-202215-  Synopsis for High Island to the Matagorda Ship Channel out  60 nautical miles including Galveston and Matagorda Bays  422 AM CDT Tue May 20 2025    .Synopsis For High Island to the Matagorda Ship Channel Out 60 NM  including Galveston and Matagorda Bays.    Winds and seas are expected to decrease through the day today as  a weakening frontal boundary approaches. Isolated showers and  thunderstorms cannot be ruled out late this evening as the weak  boundary moves closer to the coast. A brief northwesterly wind  shift is expected on Wednesday following as the boundary enters  the coastal waters, but light to occasionally moderate onshore winds  are expected to return by Wednesday night through the weekend.    $$
   GMZ370-375-202215-  Waters from Freeport to Matagorda Ship Channel TX from 20 to  60 NM-Waters from High Island to Freeport TX from 20 to 60 NM-  422 AM CDT Tue May 20 2025    SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 AM CDT THIS MORNING    TODAY  South winds 15 to 20 knots, easing to around 10 knots.  Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: Southeast  6 feet at 7 seconds.  TONIGHT  South winds 5 to 10 knots, veering to northeast late.  Seas 4 to 5 feet. Wave Detail: Southeast 5 feet at 7 seconds.  WEDNESDAY  East winds 10 to 15 knots. Seas 3 to 4 feet. Wave  Detail: Southeast 4 feet at 7 seconds.  WEDNESDAY NIGHT  East winds 5 to 10 knots, veering to southeast  after midnight. Seas around 3 feet. Wave Detail: Southeast 3 feet  at 7 seconds.  THURSDAY  Southeast winds 5 to 10 knots. Seas around 3 feet in  the morning, then around 2 feet or less. Wave Detail: Southeast  3 feet at 7 seconds, becoming southeast 2 feet at 6 seconds.  THURSDAY NIGHT  Southeast winds 5 to 10 knots. Seas around  3 feet. Wave Detail: Southeast 2 feet at 6 seconds.  FRIDAY  Southeast winds 5 to 10 knots. Seas around 2 feet or  less, then around 3 feet in the afternoon.  FRIDAY NIGHT  Southeast winds 10 to 15 knots. Seas around  3 feet.  SATURDAY  South winds 10 to 15 knots. Seas 3 to 4 feet.  SATURDAY NIGHT  Southeast winds 10 to 15 knots. Seas 3 to  4 feet.    $$