748
FZUS54 KHGX 200517
CWFHGX

Coastal Waters Forecast for Texas
National Weather Service Houston/Galveston TX
1217 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.

GMZ300-201815-
Synopsis for High Island to the Matagorda Ship Channel out
60 nautical miles including Galveston and Matagorda Bays
1217 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 Sunday 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.

$$

GMZ335-201815-
Galveston Bay-
1217 AM CDT Sun Apr 20 2025

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

.REST OF TONIGHT...Southeast winds 20 to 25 knots. Bay waters
rough.
.SUNDAY...Southeast winds 15 to 20 knots. Bay waters choppy. A
slight chance of showers and thunderstorms in the late morning
and early afternoon. A chance of showers and thunderstorms late.
.SUNDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly
choppy. A chance of showers and thunderstorms after midnight.
.MONDAY...Southeast winds around 10 knots. Bay waters smooth to
slightly choppy. 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.



$$

GMZ330-201815-
Matagorda Bay-
1217 AM CDT Sun Apr 20 2025

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

.REST OF TONIGHT...Southeast winds 20 to 25 knots. Bay waters
rough.
.SUNDAY...South winds 15 to 20 knots, becoming southeast around
15 knots in the late morning and afternoon. Bay waters choppy,
easing to slightly choppy in the late morning and afternoon. A
slight chance of showers and thunderstorms late in the morning. A
chance of showers with a slight chance of thunderstorms in the
afternoon.
.SUNDAY NIGHT...Southeast winds 10 to 15 knots, becoming south
around 10 knots after midnight. Bay waters smooth. A chance of
showers and thunderstorms after midnight.
.MONDAY...Southeast winds around 10 knots. Bay waters smooth to
slightly choppy. A chance of showers and thunderstorms until late
afternoon.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters smooth.
.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.



$$

GMZ350-355-201815-
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-Coastal waters from High Island to Freeport TX out 20 NM-
1217 AM CDT Sun Apr 20 2025

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

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



$$

GMZ370-375-201815-
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-
1217 AM CDT Sun Apr 20 2025

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

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



$$