GMZ300-212345-
627 AM CDT Fri Aug 21 2026
.Synopsis For High Island to the Matagorda Ship Channel Out 60 NM
including Galveston and Matagorda Bays.
Light to occasionally moderate south to southwest winds and 2 to
3 foot seas are expected over the next several days. Winds may
occasionally gust up to 20 knots during the afternoon in the bays,
and during the overnight hours in the Gulf. Thunderstorms are
expected north of the region this evening and again Saturday
afternoon and evening. These storms are expected to remain to our
north, but are worth watching.
$$
GMZ335-212345- Galveston Bay- 627 AM CDT Fri Aug 21 2026 TODAY Southwest winds around 10 knots, becoming south early this afternoon, then increasing to 10 to 15 knots late. Bay waters smooth, increasing to slightly choppy late. TONIGHT Southwest winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers with isolated thunderstorms in the evening. SATURDAY West winds 5 to 10 knots, becoming south in the afternoon. Bay waters smooth. SATURDAY NIGHT South winds 10 to 15 knots, becoming southwest around 10 knots after midnight. Bay waters slightly choppy, diminishing to smooth after midnight. SUNDAY Southwest winds 5 to 10 knots, becoming south in the afternoon. Bay waters smooth. SUNDAY NIGHT Southwest winds 10 to 15 knots. Bay waters slightly choppy. MONDAY Southwest winds around 10 knots, becoming south 10 to 15 knots in the afternoon. Bay waters smooth, increasing to slightly choppy in the afternoon. MONDAY NIGHT South winds 10 to 15 knots. Bay waters slightly choppy. TUESDAY South winds 10 to 15 knots. Bay waters slightly choppy. TUESDAY NIGHT South winds 10 to 15 knots. Bay waters slightly choppy. Winds and waves higher in and near thunderstorms. $$
GMZ335-212345- Galveston Bay- 627 AM CDT Fri Aug 21 2026 TODAY Southwest winds around 10 knots, becoming south early this afternoon, then increasing to 10 to 15 knots late. Bay waters smooth, increasing to slightly choppy late. TONIGHT Southwest winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers with isolated thunderstorms in the evening. SATURDAY West winds 5 to 10 knots, becoming south in the afternoon. Bay waters smooth. SATURDAY NIGHT South winds 10 to 15 knots, becoming southwest around 10 knots after midnight. Bay waters slightly choppy, diminishing to smooth after midnight. SUNDAY Southwest winds 5 to 10 knots, becoming south in the afternoon. Bay waters smooth. SUNDAY NIGHT Southwest winds 10 to 15 knots. Bay waters slightly choppy. MONDAY Southwest winds around 10 knots, becoming south 10 to 15 knots in the afternoon. Bay waters smooth, increasing to slightly choppy in the afternoon. MONDAY NIGHT South winds 10 to 15 knots. Bay waters slightly choppy. TUESDAY South winds 10 to 15 knots. Bay waters slightly choppy. TUESDAY NIGHT South winds 10 to 15 knots. Bay waters slightly choppy. Winds and waves higher in and near thunderstorms. $$