GMZ300-211730-
1204 AM CDT Thu May 21 2026
.Synopsis For High Island to the Matagorda Ship Channel Out 60 NM
including Galveston and Matagorda Bays.
The next weather disturbance will be pushing off the mid and lower
Texas coast overnight. The northern periphery of this storm complex
could track across portions of the upper Texas coast between
about 5am and noon, though timing of storms remains a bit
uncertain. Mariners should check the latest forecast and weather
conditions before beginning or continuing their transits. Multiple
rounds of showers and thunderstorms are anticipated through the
holiday weekend, so take note of the potential for intermittent
periods of elevated winds and seas in and around any of the
stronger thunderstorms. Outside of the storm complexes, expect
light to occasionally moderate onshore flow with 3-5 ft seas.
$$
GMZ330-211730- Matagorda Bay- 1204 AM CDT Thu May 21 2026 REST OF TONIGHT East winds 10 to 15 knots. Bay waters slightly choppy. Showers and thunderstorms likely late. THURSDAY Southeast winds 10 to 15 knots. Bay waters slightly choppy. Showers and thunderstorms. THURSDAY NIGHT South winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and thunderstorms. FRIDAY South winds around 10 knots. Bay waters smooth to slightly choppy. A chance of showers and thunderstorms. FRIDAY NIGHT Southeast winds around 10 knots. Bay waters smooth to slightly choppy. SATURDAY Southeast winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. SATURDAY NIGHT Southeast winds around 10 knots. Bay waters smooth to slightly choppy. Showers and thunderstorms. SUNDAY Southeast winds 5 to 10 knots. Bay waters smooth. Showers and thunderstorms, mainly in the morning. SUNDAY NIGHT Southeast winds 5 to 10 knots. Bay waters smooth. A chance of showers and thunderstorms in the evening, then showers and thunderstorms likely after midnight. MONDAY East winds 5 to 10 knots. Bay waters smooth. A chance of showers and thunderstorms. MONDAY NIGHT Southeast winds 5 to 10 knots. Bay waters smooth. A chance of showers and thunderstorms after midnight. Winds and waves higher in and near thunderstorms. $$
GMZ330-211730- Matagorda Bay- 1204 AM CDT Thu May 21 2026 REST OF TONIGHT East winds 10 to 15 knots. Bay waters slightly choppy. Showers and thunderstorms likely late. THURSDAY Southeast winds 10 to 15 knots. Bay waters slightly choppy. Showers and thunderstorms. THURSDAY NIGHT South winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and thunderstorms. FRIDAY South winds around 10 knots. Bay waters smooth to slightly choppy. A chance of showers and thunderstorms. FRIDAY NIGHT Southeast winds around 10 knots. Bay waters smooth to slightly choppy. SATURDAY Southeast winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. SATURDAY NIGHT Southeast winds around 10 knots. Bay waters smooth to slightly choppy. Showers and thunderstorms. SUNDAY Southeast winds 5 to 10 knots. Bay waters smooth. Showers and thunderstorms, mainly in the morning. SUNDAY NIGHT Southeast winds 5 to 10 knots. Bay waters smooth. A chance of showers and thunderstorms in the evening, then showers and thunderstorms likely after midnight. MONDAY East winds 5 to 10 knots. Bay waters smooth. A chance of showers and thunderstorms. MONDAY NIGHT Southeast winds 5 to 10 knots. Bay waters smooth. A chance of showers and thunderstorms after midnight. Winds and waves higher in and near thunderstorms. $$