735
FZUS54 KHGX 200827
CWFHGX

Coastal Waters Forecast for Texas
National Weather Service Houston/Galveston TX
327 AM CDT Sun Apr 20 2025

Upper Texas coastal waters from High Island to the Matagorda Ship
Channel out 60 nautical miles including Galveston and Matagorda
Bays.

Seas are provided as a range of the average height of the highest
1/3 of the waves...along with the occasional height of the
average highest 10 percent of the waves.

GMZ300-202130-
Synopsis for High Island to the Matagorda Ship Channel out
60 nautical miles including Galveston and Matagorda Bays
327 AM CDT Sun Apr 20 2025

.Synopsis For High Island to the Matagorda Ship Channel Out 60 NM
including Galveston and Matagorda Bays.

Recent moderate to strong winds and hazardous seas are expected
to begin gradually decreasing today and continue decreasing into
Monday. However, there will also be an increasing chance of
showers and thunderstorms, especially by tonight into Monday.
Shower and thunderstorm chances will continue into next week as
increased Gulf moisture interacts with a series of upper level
disturbances. Onshore winds and seas are expected to increase by
the middle of the week.

$$

GMZ335-202130-
Galveston Bay-
327 AM CDT Sun Apr 20 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 AM CDT THIS MORNING...

.TODAY...Southeast winds 15 to 20 knots. Bay waters choppy. A
chance of showers and thunderstorms late this morning and
afternoon.
.TONIGHT...South winds 10 to 15 knots, easing to around 10 knots
late. Bay waters slightly choppy, easing to smooth late. A chance
of showers and thunderstorms.
.MONDAY...Southeast winds 5 to 10 knots. Bay waters smooth. A
chance of thunderstorms. Showers likely until late afternoon,
then a chance of showers late.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters smooth.
A chance of showers and thunderstorms early in the evening.
.TUESDAY...Southeast winds around 10 knots, rising to 10 to
15 knots in the afternoon. Bay waters smooth, rising to slightly
choppy in the afternoon. A chance of showers and thunderstorms.
.TUESDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters
slightly choppy. A chance of showers and thunderstorms after
midnight.
.WEDNESDAY...Southeast winds 10 to 15 knots. Bay waters slightly
choppy. Showers likely with a chance of thunderstorms.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters
slightly choppy.
.THURSDAY...Southeast winds 10 to 15 knots. Bay waters slightly
choppy. A chance of showers and thunderstorms in the afternoon.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters
slightly choppy.

Winds and waves higher in and near thunderstorms.

$$

GMZ330-202130-
Matagorda Bay-
327 AM CDT Sun Apr 20 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 AM CDT THIS MORNING...

.TODAY...South winds 15 to 20 knots, becoming southeast around
15 knots late this morning and afternoon. Bay waters choppy,
easing to slightly choppy late this morning and afternoon. A
chance of showers and thunderstorms late this morning and early
afternoon. A chance of showers with a slight chance of
thunderstorms late.
.TONIGHT...Southeast winds 10 to 15 knots, becoming south around
10 knots after midnight. Bay waters slightly choppy, easing to
smooth after midnight. A chance of thunderstorms. A chance of
showers.
.MONDAY...Southeast winds 5 to 10 knots. Bay waters smooth. A
chance of thunderstorms. A chance of showers.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters smooth.
A chance of showers and thunderstorms early in the evening.
.TUESDAY...Southeast winds around 10 knots, rising to 10 to
15 knots in the afternoon. Bay waters smooth, rising to slightly
choppy in the afternoon. A chance of showers and thunderstorms.
.TUESDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters
slightly choppy. A chance of thunderstorms. A chance of showers.
.WEDNESDAY...Southeast winds 10 to 15 knots. Bay waters slightly
choppy. A chance of thunderstorms. A chance of showers.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters
slightly choppy.
.THURSDAY...Southeast winds 10 to 15 knots. Bay waters slightly
choppy.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters
slightly choppy.

Winds and waves higher in and near thunderstorms.

$$

GMZ350-355-202130-
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-Coastal waters from High Island to Freeport TX out 20 NM-
327 AM CDT Sun Apr 20 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 AM CDT THIS MORNING...

.TODAY...Southeast winds 15 to 20 knots, easing to around
15 knots late this morning and afternoon. Seas 5 to 7 feet,
occasionally to 9 feet. Wave Detail: Southeast 7 feet at
8 seconds. A chance of showers with a slight chance of
thunderstorms late this morning and afternoon.
.TONIGHT...South winds 10 to 15 knots, easing to around 10 knots
late. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail:
Southeast 5 feet at 8 seconds. A chance of showers and
thunderstorms.
.MONDAY...Southeast winds 5 to 10 knots. Seas 3 to 5 feet. Wave
Detail: Southeast 5 feet at 8 seconds. A chance of thunderstorms.
A chance of showers.
.MONDAY NIGHT...Southeast winds around 10 knots. Seas 3 to
4 feet. Wave Detail: Southeast 4 feet at 8 seconds. A chance of
showers early in the evening.
.TUESDAY...Southeast winds around 10 knots. Seas 3 to 4 feet.
Wave Detail: Southeast 3 feet at 8 seconds. A chance of showers
and thunderstorms.
.TUESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to
4 feet. Wave Detail: Southeast 4 feet at 8 seconds. A chance of
showers and thunderstorms after midnight.
.WEDNESDAY...Southeast winds 10 to 15 knots. Seas 3 to 5 feet. A
chance of showers and thunderstorms.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to
5 feet.
.THURSDAY...Southeast winds 10 to 15 knots. Seas 3 to 5 feet.
.THURSDAY NIGHT...Southeast winds around 15 knots. Seas 4 to
6 feet, occasionally to 8 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ370-375-202130-
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-
327 AM CDT Sun Apr 20 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.TODAY...Southeast winds 15 to 20 knots. Seas 6 to 9 feet,
occasionally to 11 feet, subsiding to 6 to 7 feet, occasionally
to 9 feet this afternoon. Wave Detail: Southeast 7 feet at
8 seconds, becoming southeast 6 feet at 8 seconds. A slight
chance of showers and thunderstorms early this afternoon. A
chance of showers with a slight chance of thunderstorms late.
.TONIGHT...Southeast winds 10 to 15 knots, easing to around
10 knots late. Seas 5 to 7 feet, occasionally to 9 feet. Wave
Detail: Southeast 6 feet at 8 seconds. A slight chance of
thunderstorms. A slight chance of showers until early morning,
then a chance of showers late.
.MONDAY...Southeast winds 5 to 10 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: Southeast 6 feet at
8 seconds. A chance of thunderstorms in the morning. A chance of
showers until late afternoon.
.MONDAY NIGHT...Southeast winds around 10 knots. Seas 4 to
5 feet. Wave Detail: Southeast 4 feet at 8 seconds and south
2 feet at 7 seconds.
.TUESDAY...Southeast winds around 10 knots. Seas 3 to 5 feet.
Wave Detail: Southeast 4 feet at 8 seconds and south 2 feet at
7 seconds. A chance of showers in the morning.
.TUESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to
5 feet. Wave Detail: Southeast 4 feet at 8 seconds. A chance of
showers after midnight.
.WEDNESDAY...Southeast winds 10 to 15 knots. Seas 4 to 6 feet,
occasionally to 8 feet. A chance of showers and thunderstorms.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 4 to
6 feet, occasionally to 8 feet.
.THURSDAY...Southeast winds 10 to 15 knots. Seas 4 to 6 feet,
occasionally to 8 feet.
.THURSDAY NIGHT...Southeast winds around 15 knots. Seas 5 to
7 feet, occasionally to 9 feet.

Winds and seas higher in and near thunderstorms.

$$