GMZ300-181445-
910 PM CDT Fri Apr 17 2026
.Synopsis For High Island to the Matagorda Ship Channel Out 60 NM
including Galveston and Matagorda Bays.
Onshore flow around 15 to 20 knots with occasional gusts to 25kt
will persist through early Saturday with 2-4ft seas. Persistent
onshore flow has led to increased wave runup along beaches and
water levels are expected to be near 3.0 feet above Mean Lower Low
Water during high tide cycles over the next few days. A cold
front with associated showers and storms are expected to push
offshore Saturday evening into early Sunday. Small Craft
Advisories will be needed Saturday night into Sunday due to the
strong northeasterly winds and building seas developing behind
the cold front. Chances are increasing in seeing gusts to Gale-
force over the coastal waters late Saturday night into Sunday
afternoon.
$$
GMZ335-181445- Galveston Bay- 910 PM CDT Fri Apr 17 2026 SMALL CRAFT SHOULD EXERCISE CAUTION IN EFFECT UNTIL 7 AM CDT SATURDAY TONIGHT South winds 15 to 20 knots, diminishing to around 15 knots late. Bay waters choppy, diminishing to slightly choppy late. SATURDAY South winds 10 to 15 knots. Bay waters slightly choppy. A chance of thunderstorms with a slight chance of showers in the afternoon. SATURDAY NIGHT North winds around 20 knots with gusts up to 25 knots, becoming northeast around 30 knots after midnight. Bay waters choppy, increasing to very rough after midnight. A chance of thunderstorms. Showers. SUNDAY Northeast winds 20 to 25 knots with gusts up to 35 knots, diminishing to around 20 knots with gusts up to 25 knots in the afternoon. Bay waters rough, diminishing to choppy in the afternoon. SUNDAY NIGHT Northeast winds 15 to 20 knots. Bay waters choppy. MONDAY East winds 15 to 20 knots, diminishing to around 15 knots in the afternoon. Bay waters choppy, diminishing to slightly choppy in the afternoon. MONDAY NIGHT Southeast winds 10 to 15 knots. Bay waters slightly choppy. TUESDAY Southeast winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers. A chance of thunderstorms in the afternoon. TUESDAY NIGHT Southeast winds 10 to 15 knots. Bay waters slightly choppy. WEDNESDAY Southeast winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers. A chance of thunderstorms in the afternoon. WEDNESDAY NIGHT Southeast winds 15 to 20 knots. Bay waters choppy. Winds and waves higher in and near thunderstorms. $$
GMZ335-181445- Galveston Bay- 910 PM CDT Fri Apr 17 2026 SMALL CRAFT SHOULD EXERCISE CAUTION IN EFFECT UNTIL 7 AM CDT SATURDAY TONIGHT South winds 15 to 20 knots, diminishing to around 15 knots late. Bay waters choppy, diminishing to slightly choppy late. SATURDAY South winds 10 to 15 knots. Bay waters slightly choppy. A chance of thunderstorms with a slight chance of showers in the afternoon. SATURDAY NIGHT North winds around 20 knots with gusts up to 25 knots, becoming northeast around 30 knots after midnight. Bay waters choppy, increasing to very rough after midnight. A chance of thunderstorms. Showers. SUNDAY Northeast winds 20 to 25 knots with gusts up to 35 knots, diminishing to around 20 knots with gusts up to 25 knots in the afternoon. Bay waters rough, diminishing to choppy in the afternoon. SUNDAY NIGHT Northeast winds 15 to 20 knots. Bay waters choppy. MONDAY East winds 15 to 20 knots, diminishing to around 15 knots in the afternoon. Bay waters choppy, diminishing to slightly choppy in the afternoon. MONDAY NIGHT Southeast winds 10 to 15 knots. Bay waters slightly choppy. TUESDAY Southeast winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers. A chance of thunderstorms in the afternoon. TUESDAY NIGHT Southeast winds 10 to 15 knots. Bay waters slightly choppy. WEDNESDAY Southeast winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers. A chance of thunderstorms in the afternoon. WEDNESDAY NIGHT Southeast winds 15 to 20 knots. Bay waters choppy. Winds and waves higher in and near thunderstorms. $$