GMZ300-180015-
653 AM CDT Thu Sep 17 2026
.Synopsis For High Island to the Matagorda Ship Channel Out 60 NM
including Galveston and Matagorda Bays.
Moderate easterly winds and increasing Gulf seas are expected
through Friday. Scattered showers and thunderstorms are likely
overnight through early afternoon Thursday. A few thunderstorms
could produce locally strong gusts over 30 knots. Drier weather is
expected Friday and Saturday. Daily risk of showers and storms
returns by Sunday or Monday.
$$
GMZ370-375-180015- Waters from Freeport to Matagorda Ship Channel TX from 20 to 60 NM-Waters from High Island to Freeport TX from 20 to 60 NM- 653 AM CDT Thu Sep 17 2026 SMALL CRAFT SHOULD EXERCISE CAUTION IN EFFECT FROM 10 AM CDT THIS MORNING THROUGH LATE TONIGHT TODAY East winds around 15 knots, increasing to 15 to 20 knots late this morning and afternoon. Seas 3 to 5 feet. A chance of thunderstorms. Showers likely. TONIGHT East winds 15 to 20 knots with gusts up to 25 knots. Seas 4 to 5 feet. A chance of showers and thunderstorms in the evening. FRIDAY East winds 15 to 20 knots. Seas 4 to 5 feet. Wave Detail: East 4 feet at 7 seconds. FRIDAY NIGHT East winds 15 to 20 knots, diminishing to around 15 knots after midnight. Seas 3 to 5 feet. Wave Detail: East 5 feet at 7 seconds. SATURDAY East winds around 10 knots. Seas 3 to 4 feet. Wave Detail: East 4 feet at 7 seconds. SATURDAY NIGHT Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 6 seconds. SUNDAY Southeast winds 5 to 10 knots. Seas 2 to 3 feet. SUNDAY NIGHT Southeast winds 5 to 10 knots. Seas around 2 feet. MONDAY East winds around 5 knots. Seas around 2 feet. A chance of showers and thunderstorms in the morning. MONDAY NIGHT East winds 5 to 10 knots. Seas around 2 feet. Winds and seas higher in and near thunderstorms. $$
GMZ370-375-180015- 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- 653 AM CDT Thu Sep 17 2026 SMALL CRAFT SHOULD EXERCISE CAUTION IN EFFECT FROM 10 AM CDT THIS MORNING THROUGH LATE TONIGHT TODAY East winds around 15 knots, increasing to 15 to 20 knots late this morning and afternoon. Seas 3 to 5 feet. A chance of thunderstorms. Showers likely. TONIGHT East winds 15 to 20 knots with gusts up to 25 knots. Seas 4 to 5 feet. A chance of showers and thunderstorms in the evening. FRIDAY East winds 15 to 20 knots. Seas 4 to 5 feet. Wave Detail: East 4 feet at 7 seconds. FRIDAY NIGHT East winds 15 to 20 knots, diminishing to around 15 knots after midnight. Seas 3 to 5 feet. Wave Detail: East 5 feet at 7 seconds. SATURDAY East winds around 10 knots. Seas 3 to 4 feet. Wave Detail: East 4 feet at 7 seconds. SATURDAY NIGHT Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 6 seconds. SUNDAY Southeast winds 5 to 10 knots. Seas 2 to 3 feet. SUNDAY NIGHT Southeast winds 5 to 10 knots. Seas around 2 feet. MONDAY East winds around 5 knots. Seas around 2 feet. A chance of showers and thunderstorms in the morning. MONDAY NIGHT East winds 5 to 10 knots. Seas around 2 feet. Winds and seas higher in and near thunderstorms. $$