GMZ300-191330-
747 PM CDT Sat Apr 18 2026
.Synopsis For High Island to the Matagorda Ship Channel Out 60 NM
including Galveston and Matagorda Bays.
Lingering showers and isolated storms will continue into early
Sunday morning in the wake of a cold front. Hazardous marine
conditions are expected into early Sunday afternoon due to the
strong northeasterly winds and building seas developing behind the
cold front. There will be a chance for gusts to gale in the Bays
early Sunday morning with gale conditions anticipated in the Gulf
Waters. Winds will lower through the day on Sunday, but seas may
remain elevated into Sunday night. Water levels are expected to
remain near 3.0 feet above Mean Lower Low Water during high tide
cycles going into early next week.
$$
GMZ350-355-191330-
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-Coastal waters from High Island to Freeport TX out 20 NM-
747 PM CDT Sat Apr 18 2026
GALE WATCH IN EFFECT THROUGH SUNDAY AFTERNOON
TONIGHT
Southeast winds around 15 knots, becoming north around
20 knots late this evening, then becoming northeast around
30 knots after midnight. Seas 2 to 4 feet, building to 4 to
6 feet, occasionally to 8 feet after midnight. Wave Detail: South
2 feet at 6 seconds, becoming northeast 3 feet at 3 seconds. A
chance of showers this evening. A chance of thunderstorms.
Showers likely after midnight.
SUNDAY
Northeast winds around 30 knots, diminishing to 20 to
25 knots in the afternoon. Seas 5 to 8 feet, occasionally to
10 feet. Wave Detail: Northeast 6 feet at 5 seconds and south
1 foot at 6 seconds. A chance of showers with a slight chance of
thunderstorms in the morning.
SUNDAY NIGHT
Northeast winds 20 to 25 knots, becoming east
around 20 knots after midnight. Seas 4 to 6 feet, occasionally to
8 feet. Wave Detail: East 6 feet at 7 seconds. A chance of
showers after midnight.
MONDAY
East winds 15 to 20 knots with gusts up to 25 knots.
Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: East
5 feet at 7 seconds. A chance of showers.
MONDAY NIGHT
East winds around 15 knots. Seas 3 to 5 feet. A
chance of showers.
TUESDAY
Southeast winds 10 to 15 knots. Seas 3 to 4 feet. A
chance of showers in the morning, then showers likely with a
chance of thunderstorms in the afternoon.
TUESDAY NIGHT
Southeast winds 15 to 20 knots, diminishing to
around 15 knots after midnight. Seas 3 to 4 feet. A chance of
showers and thunderstorms.
WEDNESDAY
Southeast winds 10 to 15 knots. Seas 2 to 4 feet. A
chance of thunderstorms. Showers likely, mainly in the morning.
WEDNESDAY NIGHT
Southeast winds 15 to 20 knots. Seas 2 to
4 feet.
THURSDAY
Southeast winds 15 to 20 knots. Seas 3 to 4 feet.
THURSDAY NIGHT
Southeast winds 15 to 20 knots. Seas 3 to
5 feet.
Winds and seas higher in and near thunderstorms.
$$
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