Coastal Waters Forecast
Issued by NWS Houston/Galveston, TX

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851
FZUS54 KHGX 092059
CWFHGX

Coastal Waters Forecast for Texas
National Weather Service Houston/Galveston TX
359 PM CDT Fri May 9 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.

GMZ300-100915-
Synopsis for High Island to the Matagorda Ship Channel out
60 nautical miles including Galveston and Matagorda Bays
359 PM CDT Fri May 9 2025

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

Winds are expected to decrease below 15 knots later this evening with
light northerly winds persisting through the weekend. Isolated
showers and thunderstorms are possible through Saturday night
producing locally higher winds and seas. Onshore flow is expected
to return by Tuesday.

$$

GMZ335-100915-
Galveston Bay-
359 PM CDT Fri May 9 2025

.TONIGHT...North winds around 10 knots. Bay waters smooth to
slightly choppy. A slight chance of showers until early morning.
.SATURDAY...North winds around 10 knots. Bay waters smooth to
slightly choppy. A slight chance of showers. A slight chance of
thunderstorms in the late morning and afternoon.
.SATURDAY NIGHT...North winds 10 to 15 knots. Bay waters slightly
choppy. A chance of thunderstorms in the evening. A chance of
showers until early morning.
.SUNDAY...North winds around 10 knots. Bay waters smooth to
slightly choppy.
.SUNDAY NIGHT...Northwest winds 5 to 10 knots. Bay waters smooth.
.MONDAY...Northwest winds 5 to 10 knots. Bay waters smooth.
.MONDAY NIGHT...South winds 5 to 10 knots. Bay waters smooth.
.TUESDAY...South winds 10 to 15 knots. Bay waters slightly
choppy.
.TUESDAY NIGHT...South winds 15 to 20 knots. Bay waters choppy.
.WEDNESDAY...South winds around 15 knots. Bay waters slightly
choppy to choppy.
.WEDNESDAY NIGHT...South winds around 15 knots. Bay waters
slightly choppy to choppy.

Winds and waves higher in and near thunderstorms.

$$

GMZ330-100915-
Matagorda Bay-
359 PM CDT Fri May 9 2025

.TONIGHT...North winds 10 to 15 knots. Bay waters slightly
choppy. A slight chance of showers after midnight.
.SATURDAY...North winds 10 to 15 knots. Bay waters slightly
choppy. A slight chance of showers. A slight chance of
thunderstorms in the late morning and afternoon.
.SATURDAY NIGHT...North winds 10 to 15 knots, easing to around
10 knots late. Bay waters slightly choppy, easing to smooth late.
.SUNDAY...North winds around 10 knots. Bay waters smooth to
slightly choppy.
.SUNDAY NIGHT...North winds 5 to 10 knots. Bay waters smooth.
.MONDAY...Northwest winds around 5 knots, backing to southwest in
the afternoon. Bay waters smooth.
.MONDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly
choppy.
.TUESDAY...South winds 10 to 15 knots. Bay waters slightly
choppy.
.TUESDAY NIGHT...South winds 15 to 20 knots. Bay waters choppy.
.WEDNESDAY...South winds 15 to 20 knots. Bay waters choppy.
.WEDNESDAY NIGHT...South winds around 15 knots. Bay waters
slightly choppy to choppy.

Winds and waves higher in and near thunderstorms.

$$

GMZ350-355-100915-
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-Coastal waters from High Island to Freeport TX out 20 NM-
359 PM CDT Fri May 9 2025

.TONIGHT...North winds 10 to 15 knots. Seas around 3 feet. Wave
Detail: Northeast 2 feet at 4 seconds and southeast 2 feet at
7 seconds. A slight chance of showers late this evening and
overnight.
.SATURDAY...North winds 10 to 15 knots. Seas around 3 feet. Wave
Detail: East 2 feet at 5 seconds. A slight chance of showers. A
slight chance of thunderstorms in the late morning and afternoon.
.SATURDAY NIGHT...North winds 10 to 15 knots. Seas around 3 feet.
Wave Detail: East 2 feet at 6 seconds. A chance of thunderstorms
in the evening. A chance of showers until early morning.
.SUNDAY...North winds 10 to 15 knots. Seas around 3 feet. Wave
Detail: East 2 feet at 6 seconds.
.SUNDAY NIGHT...Northwest winds 5 to 10 knots. Seas around 2 feet
or less. Wave Detail: East 2 feet at 6 seconds.
.MONDAY...Northwest winds 5 to 10 knots, backing to west in the
afternoon. Seas around 2 feet or less. Wave Detail: West 1 foot
at 2 seconds and east 1 foot at 6 seconds.
.MONDAY NIGHT...South winds 10 to 15 knots. Seas around 2 feet or
less, then around 3 feet after midnight.
.TUESDAY...South winds around 15 knots. Seas 3 to 4 feet.
.TUESDAY NIGHT...South winds 15 to 20 knots. Seas 4 to 6 feet,
occasionally to 8 feet.
.WEDNESDAY...South winds 15 to 20 knots. Seas 4 to 6 feet,
occasionally to 8 feet.
.WEDNESDAY NIGHT...South winds 15 to 20 knots. Seas 3 to 5 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ370-375-100915-
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-
359 PM CDT Fri May 9 2025

...Small Craft Should Exercise Caution...

.TONIGHT...North winds 15 to 20 knots, easing to around 15 knots
late this evening and overnight. Seas 4 to 6 feet, occasionally
to 8 feet, subsiding to 3 to 4 feet after midnight. Wave Detail:
Northeast 3 feet at 5 seconds and southeast 3 feet at 7 seconds,
becoming northeast 3 feet at 5 seconds and southeast 2 feet at
7 seconds. A slight chance of showers after midnight.
.SATURDAY...North winds 10 to 15 knots. Seas around 3 feet. Wave
Detail: Northeast 3 feet at 4 seconds and southeast 2 feet at
6 seconds. A slight chance of showers. A slight chance of
thunderstorms in the late morning and afternoon.
.SATURDAY NIGHT...North winds 10 to 15 knots. Seas around 3 feet.
Wave Detail: Northeast 3 feet at 5 seconds and southeast 2 feet
at 6 seconds. A chance of thunderstorms until early morning. A
chance of showers.
.SUNDAY...North winds 10 to 15 knots. Seas 3 to 4 feet. Wave
Detail: Northeast 3 feet at 5 seconds and southeast 1 foot at
6 seconds. A chance of showers early in the morning.
.SUNDAY NIGHT...Northwest winds 5 to 10 knots. Seas around 3 feet
in the evening, then around 2 feet or less. Wave Detail:
Northeast 2 feet at 5 seconds and southeast 1 foot at 6 seconds.
.MONDAY...West winds 5 to 10 knots. Seas around 3 feet in the
morning, then around 2 feet or less. Wave Detail: East 2 feet at
5 seconds and northwest 1 foot at 3 seconds, becoming west 1 foot
at 3 seconds and east 1 foot at 5 seconds.
.MONDAY NIGHT...Southwest winds around 10 knots, becoming south
10 to 15 knots after midnight. Seas around 2 feet or less, then
around 3 feet after midnight.
.TUESDAY...South winds 10 to 15 knots. Seas 3 to 4 feet.
.TUESDAY NIGHT...South winds 15 to 20 knots. Seas 4 to 6 feet,
occasionally to 8 feet.
.WEDNESDAY...South winds 15 to 20 knots. Seas 5 to 6 feet,
occasionally to 8 feet.
.WEDNESDAY NIGHT...South winds 15 to 20 knots. Seas around
5 feet.

Winds and seas higher in and near thunderstorms.

$$