Coastal Waters Forecast
Issued by NWS Houston/Galveston, TX

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
000
FZUS54 KHGX 201502
CWFHGX

Coastal Waters Forecast for Texas
National Weather Service Houston/Galveston TX
1002 AM CDT Sat Apr 20 2024

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.

GMZ300-210345-
Synopsis for High Island to the Matagorda Ship Channel out
60 nautical miles including Galveston and Matagorda Bays
1002 AM CDT Sat Apr 20 2024

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

Onshore winds will persist until a cold front moves offshore tonight,
resulting in a shift to moderate northeast winds. Showers and thunderstorms
will develop along and ahead of the front, impacting the bays and coastal
waters between later this afternoon and Sunday morning. As the front
departs, moderate to strong offshore winds will develop which will likely
require a Small Craft Advisory. Winds will relax by Monday, with onshore
flow redeveloping on Tuesday.

$$

GMZ335-210345-
Galveston Bay-
1002 AM CDT Sat Apr 20 2024

.REST OF TODAY...East winds around 10 knots, becoming southeast
10 to 15 knots this afternoon. Bay waters smooth, becoming
slightly choppy this afternoon. A slight chance of showers and
thunderstorms late this morning, then a chance of showers and
thunderstorms this afternoon.
.TONIGHT...East winds 10 to 15 knots, becoming northeast after
midnight. Bay waters slightly choppy. A chance of showers and
thunderstorms in the evening, then showers and thunderstorms
likely after midnight.
.SUNDAY...North winds 15 to 20 knots. Bay waters choppy. A chance
of showers and thunderstorms until late afternoon.
.SUNDAY NIGHT...Northeast winds 15 to 20 knots, diminishing to
around 15 knots late. Bay waters choppy, becoming slightly choppy
late.
.MONDAY...Northeast winds 15 to 20 knots, becoming east around
15 knots in the afternoon. Bay waters choppy, becoming slightly
choppy in the afternoon.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters smooth.
.TUESDAY...Southeast winds 5 to 10 knots. Bay waters smooth.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters
smooth.
.WEDNESDAY...Southeast winds around 10 knots, increasing to 10 to
15 knots in the afternoon. Bay waters smooth, becoming slightly
choppy in the afternoon.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters
slightly choppy.

Winds and waves higher in and near thunderstorms.

$$

GMZ330-210345-
Matagorda Bay-
1002 AM CDT Sat Apr 20 2024

.REST OF TODAY...Southeast winds 10 to 15 knots. Bay waters
slightly choppy. A slight chance of showers and thunderstorms
late this morning, then a chance of showers and thunderstorms
this afternoon.
.TONIGHT...East winds 10 to 15 knots, becoming northeast after
midnight. Bay waters slightly choppy. A chance of showers and
thunderstorms in the evening, then showers and thunderstorms
likely after midnight.
.SUNDAY...North winds 20 to 25 knots with gusts up to 35 knots,
diminishing to around 20 knots in the afternoon. Bay waters
rough, becoming choppy in the afternoon. A chance of showers and
thunderstorms early in the morning.
.SUNDAY NIGHT...North winds 20 to 25 knots, becoming northeast
around 15 knots. Bay waters rough, becoming slightly choppy.
.MONDAY...Northeast winds 15 to 20 knots, becoming east around
15 knots in the afternoon. Bay waters choppy, becoming slightly
choppy in the afternoon.
.MONDAY NIGHT...East winds 15 to 20 knots, becoming southeast
around 10 knots after midnight. Bay waters choppy, becoming
smooth after midnight.
.TUESDAY...Southeast winds 5 to 10 knots. Bay waters smooth.
.TUESDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters
slightly choppy.
.WEDNESDAY...Southeast winds 10 to 15 knots. Bay waters slightly
choppy.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters
slightly choppy.

Winds and waves higher in and near thunderstorms.

$$

GMZ350-355-210345-
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-Coastal waters from High Island to Freeport TX out 20 NM-
1002 AM CDT Sat Apr 20 2024

.REST OF TODAY...East winds 10 to 15 knots. Seas 2 to 3 feet. A
slight chance of showers and thunderstorms this afternoon.
.TONIGHT...East winds 10 to 15 knots, becoming northeast after
midnight. Seas 2 to 3 feet. A chance of showers and thunderstorms
in the evening, then showers and thunderstorms likely after
midnight.
.SUNDAY...Northeast winds 20 to 25 knots with gusts up to
40 knots. Seas 2 to 4 feet. A chance of showers and thunderstorms
in the morning.
.SUNDAY NIGHT...Northeast winds 20 to 25 knots with gusts up to
35 knots, diminishing to around 20 knots after midnight. Seas
3 to 4 feet.
.MONDAY...Northeast winds 20 to 25 knots, becoming east around
15 knots in the afternoon. Seas 3 to 4 feet.
.MONDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to 3 feet.
.TUESDAY...Southeast winds around 10 knots. Seas 2 to 3 feet.
.TUESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to
3 feet.
.WEDNESDAY...Southeast winds 10 to 15 knots. Seas around 2 feet.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to 3 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ370-375-210345-
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-
1002 AM CDT Sat Apr 20 2024

.REST OF TODAY...East winds around 10 knots, increasing to 10 to
15 knots this afternoon. Seas 2 to 3 feet. A slight chance of
showers and thunderstorms late.
.TONIGHT...East winds around 10 knots, becoming northeast after
midnight. Seas 2 to 3 feet. A slight chance of showers and
thunderstorms early in the evening, then a chance of showers and
thunderstorms late in the evening. Showers and thunderstorms
likely after midnight.
.SUNDAY...Northeast winds around 20 knots, increasing to 20 to
25 knots with gusts up to 35 knots in the late morning and
afternoon. Seas 2 to 4 feet, building to 4 to 6 feet with
occasional seas up to 8 feet in the afternoon. A chance of
showers and thunderstorms until late afternoon.
.SUNDAY NIGHT...Northeast winds 20 to 25 knots. Gusts to 35 knots
in the evening. Seas 5 to 6 feet with occasional seas up to
8 feet.
.MONDAY...Northeast winds 15 to 20 knots, diminishing to around
15 knots in the afternoon. Seas 4 to 5 feet.
.MONDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 4 feet.
.TUESDAY...Southeast winds around 10 knots. Seas 2 to 3 feet.
.TUESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to
3 feet.
.WEDNESDAY...East winds 10 to 15 knots. Seas 2 to 3 feet.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to 3 feet.

Winds and seas higher in and near thunderstorms.

$$


USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.