Coastal Waters Forecast
Issued by NWS Houston/Galveston, TX

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FZUS54 KHGX 230333
CWFHGX

Coastal Waters Forecast
National Weather Service Houston/Galveston TX
1033 PM CDT Tue Aug 22 2017

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.

GMZ300-231615-
Synopsis for High Island to the Matagorda Ship Channel out 60
nautical miles including Galveston and Matagorda Bays
1033 PM CDT Tue Aug 22 2017

.SYNOPSIS FOR HIGH ISLAND TO MATAGORDA SHIP CHANNEL OUT 60 NM...
Light winds and low seas are expected into Wednesday. Swells from
the remnants of Harvey over the southern Gulf are expected to arrive
by Thursday. This could also lead to higher tides affecting the
Upper Texas coast by Thursday night and Friday morning. Mariners
should continue to monitor the possible redevelopment of Harvey
and its eventual track. If Harvey reforms, higher winds and seas
will be possible during the last part of the week into the
weekend. Mariners are urged to keep up with the latest forecast.

$$

GMZ335-231615-
Galveston Bay-
1033 PM CDT Tue Aug 22 2017

.REST OF TONIGHT...Southeast winds 5 to 10 knots becoming south
after midnight. Bay waters smooth. Isolated showers late.
.WEDNESDAY...North winds around 5 knots becoming east in the
afternoon. Bay waters smooth. A chance of showers and
thunderstorms.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots becoming east
after midnight. Bay waters smooth. A slight chance of showers and
thunderstorms.
.THURSDAY...Northeast winds 5 to 10 knots becoming east in the
afternoon. Bay waters smooth becoming smooth to slightly choppy
in the afternoon. A chance of showers and thunderstorms.
.THURSDAY NIGHT...East winds 10 to 15 knots increasing to 15 to
20 knots after midnight. Bay waters slightly choppy becoming
choppy after midnight. A chance of showers and thunderstorms.
.FRIDAY...East winds 15 to 20 knots becoming 15 to 25 knots in
the afternoon. Bay waters choppy. Showers and thunderstorms
likely. Some thunderstorms may produce gusty winds, and heavy
rainfall.
.FRIDAY NIGHT...Southeast winds 20 to 25 knots becoming 20 to
30 knots after midnight. Bay waters rough. Showers and
thunderstorms likely. Some thunderstorms may produce gusty winds,
and heavy rainfall.
.SATURDAY...South winds 20 to 25 knots. Bay waters rough. Showers
and thunderstorms likely. Some thunderstorms may produce gusty
winds, and heavy rainfall.
.SATURDAY NIGHT...South winds 15 to 20 knots. Bay waters choppy.
Showers and thunderstorms likely. Some thunderstorms may produce
gusty winds, and heavy rainfall.
.SUNDAY...South winds 15 to 20 knots. Bay waters choppy. Showers
and thunderstorms likely. Some thunderstorms may produce gusty
winds, and heavy rainfall.
.SUNDAY NIGHT...South winds 15 to 20 knots. Bay waters choppy.
Showers and thunderstorms likely. Some thunderstorms may produce
gusty winds, and heavy rainfall.

$$

GMZ330-231615-
Matagorda Bay-
1033 PM CDT Tue Aug 22 2017

.REST OF TONIGHT...Southeast winds 5 to 10 knots. Bay waters
smooth. Isolated showers late.
.WEDNESDAY...Northeast winds 5 to 10 knots becoming east in the
afternoon. Bay waters smooth. A slight chance of showers and
thunderstorms in the morning, then a chance of showers and
thunderstorms in the afternoon.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots becoming east
after midnight. Bay waters smooth. A slight chance of showers and
thunderstorms.
.THURSDAY...Northeast winds 5 to 10 knots becoming east 10 to
15 knots in the afternoon. Bay waters smooth becoming slightly
choppy in the afternoon. A chance of showers and thunderstorms.
.THURSDAY NIGHT...East winds 15 to 20 knots. Bay waters choppy. A
chance of showers and thunderstorms.
.FRIDAY...Northeast winds 20 to 25 knots becoming east 25 to
30 knots in the afternoon. Bay waters rough becoming very rough
in the afternoon. Showers and thunderstorms likely. Some
thunderstorms may produce gusty winds, and heavy rainfall.
.FRIDAY NIGHT...Southeast winds around 30 knots becoming south
after midnight. Bay waters very rough. Showers and thunderstorms.
Some thunderstorms may produce gusty winds, and heavy rainfall.
.SATURDAY...South winds 25 to 30 knots decreasing to 20 to
25 knots in the afternoon. Bay waters very rough becoming rough
in the afternoon. Showers and thunderstorms likely. Some
thunderstorms may produce gusty winds, and heavy rainfall.
.SATURDAY NIGHT...South winds 20 to 25 knots. Bay waters rough.
Showers and thunderstorms likely. Some thunderstorms may produce
gusty winds, and heavy rainfall.
.SUNDAY...Southwest winds 15 to 20 knots decreasing to 10 to
15 knots in the afternoon. Bay waters choppy becoming slightly
choppy in the afternoon. Showers and thunderstorms likely. Some
thunderstorms may produce gusty winds, and heavy rainfall.
.SUNDAY NIGHT...Southwest winds around 15 knots becoming west
after midnight. Bay waters slightly choppy to choppy becoming
slightly choppy after midnight. Showers and thunderstorms likely.
Some thunderstorms may produce gusty winds, and heavy rainfall.

$$

GMZ355-231615-
Coastal waters from High Island to Freeport out 20 NM-
1033 PM CDT Tue Aug 22 2017

.REST OF TONIGHT...Southeast winds 5 to 10 knots. Seas 1 to
2 feet. Isolated showers after midnight.
.WEDNESDAY...Northeast winds 5 to 10 knots becoming east in the
afternoon. Seas 1 to 2 feet. A chance of showers and
thunderstorms in the morning, then a slight chance of showers and
thunderstorms in the afternoon.
.WEDNESDAY NIGHT...Southeast winds around 10 knots becoming east
after midnight. Seas 2 feet. A slight chance of showers and
thunderstorms in the evening, then a chance of showers and
thunderstorms after midnight.
.THURSDAY...East winds 10 to 15 knots. Seas 2 to 4 feet. A chance
of showers and thunderstorms.
.THURSDAY NIGHT...East winds 15 to 20 knots becoming 15 to
25 knots after midnight. Seas 3 to 5 feet building to 5 to 7 feet
with occasional seas up to 8 feet after midnight. A chance of
showers and thunderstorms.
.FRIDAY...East winds 20 to 25 knots increasing to 25 to 30 knots
in the afternoon. Seas 6 to 9 feet with occasional seas up to
11 feet. Showers and thunderstorms likely. Some thunderstorms may
produce gusty winds, and heavy rainfall.
.FRIDAY NIGHT...Southeast winds 25 to 30 knots. Seas 6 to 8 feet
with occasional seas up to 10 feet. Showers and thunderstorms
likely. Some thunderstorms may produce gusty winds, and heavy
rainfall.
.SATURDAY...South winds 25 to 30 knots decreasing to 20 to
25 knots in the afternoon. Seas 5 to 7 feet with occasional seas
up to 8 feet. Showers and thunderstorms likely. Some
thunderstorms may produce gusty winds, and heavy rainfall.
.SATURDAY NIGHT...South winds 20 to 25 knots. Seas 4 to 6 feet
with occasional seas up to 7 feet. Showers and thunderstorms
likely. Some thunderstorms may produce gusty winds, and heavy
rainfall.
.SUNDAY...South winds 15 to 20 knots. Seas 3 to 5 feet. Showers
and thunderstorms likely. Some thunderstorms may produce gusty
winds, and heavy rainfall.
.SUNDAY NIGHT...South winds 15 to 20 knots. Seas 3 to 4 feet.
Showers and thunderstorms likely. Some thunderstorms may produce
gusty winds, and heavy rainfall.

$$

GMZ350-231615-
Coastal waters from Freeport to the Matagorda Ship Channel out
20 NM-
1033 PM CDT Tue Aug 22 2017

.REST OF TONIGHT...Southeast winds 5 to 10 knots. Seas 1 to
2 feet. Isolated showers after midnight.
.WEDNESDAY...Northeast winds 5 to 10 knots becoming east in the
afternoon. Seas 1 to 2 feet. A slight chance of showers and
thunderstorms.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 2 feet. A
slight chance of showers and thunderstorms in the evening, then a
chance of showers and thunderstorms after midnight.
.THURSDAY...Northeast winds 10 to 15 knots becoming east 15 to
20 knots in the afternoon. Seas 2 to 4 feet. A chance of showers
and thunderstorms.
.THURSDAY NIGHT...East winds 15 to 20 knots becoming 15 to
25 knots after midnight. Seas 4 to 6 feet with occasional seas up
to 7 feet building to 6 to 9 feet with occasional seas up to
11 feet after midnight. A chance of showers and thunderstorms in
the evening, then showers and thunderstorms likely after
midnight.
.FRIDAY...East winds 20 to 30 knots becoming 25 to 30 knots in
the afternoon. Seas 8 to 11 feet with occasional seas up to
14 feet. Showers and thunderstorms likely. Some thunderstorms may
produce gusty winds, and heavy rainfall.
.FRIDAY NIGHT...Southeast winds around 30 knots. Seas 6 to 9 feet
with occasional seas up to 11 feet. Showers and thunderstorms.
Some thunderstorms may produce gusty winds, and heavy rainfall.
.SATURDAY...South winds 25 to 30 knots becoming 20 to 30 knots in
the afternoon. Seas 6 to 9 feet with occasional seas up to
11 feet subsiding to 5 to 7 feet with occasional seas up to
8 feet in the afternoon. Showers and thunderstorms likely. Some
thunderstorms may produce gusty winds, and heavy rainfall.
.SATURDAY NIGHT...South winds 20 to 25 knots. Seas 5 to 7 feet
with occasional seas up to 8 feet. Showers and thunderstorms
likely. Some thunderstorms may produce gusty winds, and heavy
rainfall.
.SUNDAY...Southwest winds 15 to 20 knots. Seas 3 to 5 feet.
Showers and thunderstorms likely. Some thunderstorms may produce
gusty winds, and heavy rainfall.
.SUNDAY NIGHT...Southwest winds 15 to 20 knots. Seas 3 to 4 feet.
Showers and thunderstorms likely. Some thunderstorms may produce
gusty winds, and heavy rainfall.

$$

GMZ375-231615-
Waters from High Island to Freeport from 20 to 60 NM-
1033 PM CDT Tue Aug 22 2017

.REST OF TONIGHT...Southeast winds 5 to 10 knots. Seas 2 to
3 feet. Isolated showers.
.WEDNESDAY...Northeast winds 5 to 10 knots. Seas 2 feet. A chance
of showers and thunderstorms in the morning, then a slight chance
of showers and thunderstorms in the afternoon.
.WEDNESDAY NIGHT...East winds around 10 knots. Seas 2 to 3 feet.
A slight chance of showers and thunderstorms in the evening, then
a chance of showers and thunderstorms after midnight.
.THURSDAY...East winds 10 to 15 knots. Seas 2 to 4 feet. A chance
of showers and thunderstorms.
.THURSDAY NIGHT...East winds 15 to 25 knots increasing to 20 to
30 knots after midnight. Seas 5 to 7 feet with occasional seas up
to 8 feet building to 7 to 10 feet with occasional seas up to
13 feet after midnight. Showers and thunderstorms likely.
.FRIDAY...East winds 25 to 30 knots. Seas 9 to 12 feet with
occasional seas up to 15 feet. Showers and thunderstorms likely.
Some thunderstorms may produce gusty winds, and heavy rainfall.
.FRIDAY NIGHT...Southeast winds 25 to 30 knots. Seas 9 to 11 feet
with occasional seas up to 14 feet. Showers and thunderstorms
likely. Some thunderstorms may produce gusty winds, and heavy
rainfall.
.SATURDAY...South winds 20 to 30 knots becoming 20 to 25 knots in
the afternoon. Seas 8 to 11 feet with occasional seas up to
14 feet subsiding to 6 to 9 feet with occasional seas up to
11 feet in the afternoon. Showers and thunderstorms likely. Some
thunderstorms may produce gusty winds, and heavy rainfall.
.SATURDAY NIGHT...South winds 20 to 25 knots. Seas 6 to 7 feet
with occasional seas up to 8 feet. Showers and thunderstorms
likely. Some thunderstorms may produce gusty winds, and heavy
rainfall.
.SUNDAY...South winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 7 feet. Showers and thunderstorms likely.
Some thunderstorms may produce gusty winds, and heavy rainfall.
.SUNDAY NIGHT...South winds 15 to 20 knots. Seas 4 to 5 feet with
occasional seas up to 6 feet. Showers and thunderstorms likely.
Some thunderstorms may produce gusty winds, and heavy rainfall.

$$

GMZ370-231615-
Waters from Freeport to the Matagorda Ship Channel from 20 to
60 NM-
1033 PM CDT Tue Aug 22 2017

.REST OF TONIGHT...Southeast winds 5 to 10 knots. Seas 2 to
3 feet. Isolated showers.
.WEDNESDAY...Northeast winds 5 to 10 knots. Seas 2 feet. A slight
chance of showers and thunderstorms.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. A
slight chance of showers and thunderstorms in the evening, then a
chance of showers and thunderstorms after midnight.
.THURSDAY...Northeast winds 10 to 15 knots becoming east 15 to
20 knots in the afternoon. Seas 3 to 5 feet. A chance of showers
and thunderstorms.
.THURSDAY NIGHT...East winds 15 to 25 knots increasing to 20 to
30 knots after midnight. Seas 6 to 8 feet with occasional seas up
to 10 feet building to 9 to 12 feet with occasional seas up to
15 feet after midnight. Showers and thunderstorms likely.
.FRIDAY...East winds 25 to 30 knots. Seas 11 to 14 feet with
occasional seas up to 18 feet. Showers and thunderstorms likely.
Some thunderstorms may produce gusty winds, and heavy rainfall.
.FRIDAY NIGHT...South winds around 30 knots. Seas 10 to 13 feet
with occasional seas up to 17 feet. Showers and thunderstorms.
Some thunderstorms may produce gusty winds, and heavy rainfall.
.SATURDAY...South winds 25 to 30 knots decreasing to 20 to
25 knots in the afternoon. Seas 9 to 11 feet with occasional seas
up to 14 feet subsiding to 6 to 9 feet with occasional seas up to
11 feet in the afternoon. Showers and thunderstorms likely. Some
thunderstorms may produce gusty winds, and heavy rainfall.
.SATURDAY NIGHT...South winds 20 to 25 knots. Seas 6 to 7 feet
with occasional seas up to 8 feet. Showers and thunderstorms
likely. Some thunderstorms may produce gusty winds, and heavy
rainfall.
.SUNDAY...Southwest winds 15 to 20 knots. Seas 5 to 6 feet with
occasional seas up to 7 feet. Showers and thunderstorms likely.
Some thunderstorms may produce gusty winds, and heavy rainfall.
.SUNDAY NIGHT...Southwest winds 15 to 20 knots. Seas 5 to 6 feet
with occasional seas up to 7 feet. Showers and thunderstorms
likely. Some thunderstorms may produce gusty winds, and heavy
rainfall.

$$



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