Coastal Waters Forecast
Issued by NWS Houston/Galveston, TX

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FZUS54 KHGX 210926
CWFHGX

Coastal Waters Forecast
National Weather Service Houston/Galveston TX
326 AM CST Tue Nov 21 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.

GMZ300-212230-
Synopsis for High Island to the Matagorda Ship Channel out 60
nautical miles including Galveston and Matagorda Bays
326 AM CST Tue Nov 21 2017

.SYNOPSIS FOR HIGH ISLAND TO MATAGORDA SHIP CHANNEL OUT 60 NM...
Onshore winds are expected to continue with high pressure east of
the area. Scattered showers and thunderstorms will be possible
across the coastal waters ahead of a cold front. Winds will
increase quickly behind the front, and a Small Craft Advisory is
in effect for the marine areas for late tonight into early
Wednesday. Conditions are expected to improve by Thursday with a
light onshore flow becoming established by Friday.

$$

GMZ330-335-212230-
Matagorda Bay-Galveston Bay-
326 AM CST Tue Nov 21 2017

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH
WEDNESDAY MORNING...

.TODAY...South winds 5 to 10 knots. Bay waters smooth. A chance
of showers and isolated thunderstorms.
.TONIGHT...Northeast winds 15 to 20 knots increasing to 20 to
25 knots after midnight. Bay waters choppy becoming rough after
midnight. A slight chance of showers and isolated thunderstorms.
.WEDNESDAY...North winds 15 to 25 knots becoming 15 to 20 knots
in the afternoon. Bay waters choppy.
.WEDNESDAY NIGHT...North winds 10 to 15 knots. Bay waters
slightly choppy.
.THURSDAY...North winds 5 to 10 knots. Bay waters smooth.
.THURSDAY NIGHT...Northeast winds 5 to 10 knots. Bay waters
smooth.
.FRIDAY...East winds around 5 knots becoming south in the
afternoon. Bay waters smooth.
.FRIDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters smooth.
.SATURDAY...Southwest winds around 5 knots becoming south in the
afternoon. Bay waters smooth.
.SATURDAY NIGHT...Northwest winds around 5 knots becoming north
after midnight. Bay waters smooth.

$$

GMZ350-355-212230-
Coastal waters from Freeport to the Matagorda Ship Channel out
20 NM-Coastal waters from High Island to Freeport out 20 NM-
326 AM CST Tue Nov 21 2017

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH
WEDNESDAY MORNING...

.TODAY...South winds 10 to 15 knots. Seas 2 feet. A chance of
showers and isolated thunderstorms.
.TONIGHT...Northeast winds 15 to 20 knots becoming 15 to 25 knots
after midnight. Seas 2 to 4 feet. A slight chance of showers in
the evening. Isolated thunderstorms. A chance of showers after
midnight.
.WEDNESDAY...North winds 20 to 25 knots decreasing to 15 to
20 knots in the afternoon. Seas 3 to 5 feet. A slight chance of
showers and isolated thunderstorms in the morning.
.WEDNESDAY NIGHT...North winds 15 to 20 knots decreasing to 10 to
15 knots after midnight. Seas 3 to 5 feet.
.THURSDAY...North winds 10 to 15 knots. Seas 2 to 3 feet.
.THURSDAY NIGHT...North winds 5 to 10 knots. Seas 1 to 2 feet.
.FRIDAY...East winds around 5 knots becoming south in the
afternoon. Seas 1 foot.
.FRIDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot.
.SATURDAY...Southwest winds 5 to 10 knots becoming south in the
afternoon. Seas 1 foot.
.SATURDAY NIGHT...West winds around 5 knots becoming north 10 to
15 knots after midnight. Seas 1 to 2 feet.

$$

GMZ375-212230-
Waters from High Island to Freeport from 20 to 60 NM-
326 AM CST Tue Nov 21 2017

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH
WEDNESDAY MORNING...

.TODAY...South winds around 15 knots becoming 10 to 15 knots in
the afternoon. Seas 2 to 3 feet. A chance of showers and isolated
thunderstorms in the morning, then showers and thunderstorms
likely in the afternoon.
.TONIGHT...North winds 15 to 20 knots becoming northeast 15 to
25 knots after midnight. Seas 2 to 3 feet building to 3 to 5 feet
after midnight. A chance of showers and isolated thunderstorms.
.WEDNESDAY...Northeast winds 20 to 30 knots becoming north 20 to
25 knots in the afternoon. Seas 5 to 7 feet with occasional seas
up to 8 feet. A chance of showers and isolated thunderstorms in
the morning.
.WEDNESDAY NIGHT...North winds 15 to 20 knots. Seas 4 to 6 feet
with occasional seas up to 7 feet.
.THURSDAY...North winds 10 to 15 knots. Seas 2 to 4 feet.
.THURSDAY NIGHT...North winds 5 to 10 knots. Seas 2 to 3 feet.
.FRIDAY...East winds around 5 knots becoming southeast in the
afternoon. Seas 1 foot.
.FRIDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot.
.SATURDAY...Southwest winds 5 to 10 knots becoming south in the
afternoon. Seas 1 foot.
.SATURDAY NIGHT...West winds around 5 knots becoming north 10 to
15 knots after midnight. Seas 1 to 2 feet.

$$

GMZ370-212230-
Waters from Freeport to the Matagorda Ship Channel from 20 to
60 NM-
326 AM CST Tue Nov 21 2017

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH
WEDNESDAY MORNING...

.TODAY...South winds 10 to 15 knots becoming southwest in the
afternoon. Seas 2 to 3 feet. A chance of showers and isolated
thunderstorms.
.TONIGHT...Northeast winds 10 to 15 knots increasing to 15 to
25 knots with gusts to around 40 knots after midnight. Seas
2 feet building to 3 to 5 feet after midnight. A slight chance of
showers in the evening, then a chance of showers and isolated
thunderstorms after midnight.
.WEDNESDAY...Northeast winds 25 to 30 knots becoming north 20 to
25 knots in the afternoon. Seas 6 to 8 feet with occasional seas
up to 10 feet. A chance of showers and isolated thunderstorms in
the morning.
.WEDNESDAY NIGHT...North winds 15 to 20 knots. Seas 4 to 6 feet
with occasional seas up to 7 feet.
.THURSDAY...North winds 10 to 15 knots. Seas 3 to 4 feet.
.THURSDAY NIGHT...North winds 10 to 15 knots decreasing to 5 to
10 knots after midnight. Seas 2 to 3 feet.
.FRIDAY...East winds around 5 knots becoming southeast in the
afternoon. Seas 1 to 2 feet.
.FRIDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot.
.SATURDAY...South winds 5 to 10 knots. Seas 1 foot.
.SATURDAY NIGHT...West winds around 5 knots becoming north after
midnight. Seas 1 to 2 feet.

$$



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