Coastal Waters Forecast
Issued by NWS Houston/Galveston, TX

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FZUS54 KHGX 200842
CWFHGX

Coastal Waters Forecast
National Weather Service Houston/Galveston TX
342 AM CDT Sun Aug 20 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.

GMZ300-202130-
Synopsis for High Island to the Matagorda Ship Channel out 60
nautical miles including Galveston and Matagorda Bays
342 AM CDT Sun Aug 20 2017

.SYNOPSIS FOR HIGH ISLAND TO MATAGORDA SHIP CHANNEL OUT 60 NM...
The region of surface high pressure that was located over the
northwestern Gulf of Mexico will begin to move northeastward
Sunday, and better coverage for showers and thunderstorms can be
expected through mid week. Elevated seas and gusty winds will be
possible below stronger storms. Light winds should remain out of
the south to southeast with lower seas throughout much of the
week.

$$

GMZ330-202130-
Matagorda Bay-
342 AM CDT Sun Aug 20 2017

.TODAY...Southeast winds 5 to 10 knots. Bay waters smooth. A
slight chance of showers and isolated thunderstorms late in the
morning.
.TONIGHT...Southeast winds 10 to 15 knots decreasing to 5 to
10 knots after midnight. Bay waters slightly choppy becoming
smooth after midnight.
.MONDAY...Southeast winds 5 to 10 knots. Bay waters smooth. A
chance of showers and thunderstorms.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters smooth.
.TUESDAY...Southeast winds 5 to 10 knots. Bay waters smooth. A
chance of showers and thunderstorms in the morning, then a slight
chance of showers and thunderstorms in the afternoon.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters
smooth.
.WEDNESDAY...Northeast winds around 5 knots becoming southeast in
the afternoon. Bay waters smooth. A slight chance of showers and
thunderstorms.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters
smooth. A slight chance of showers and thunderstorms.
.THURSDAY...East winds around 5 knots. Bay waters smooth. A
chance of showers and thunderstorms.
.THURSDAY NIGHT...East winds 5 to 10 knots. Bay waters smooth. A
chance of showers and thunderstorms.

$$

GMZ335-202130-
Galveston Bay-
342 AM CDT Sun Aug 20 2017

.TODAY...North winds around 5 knots becoming southeast in the
afternoon. Bay waters smooth. A slight chance of showers and
isolated thunderstorms in the morning. A chance of showers and
thunderstorms in the afternoon.
.TONIGHT...Southeast winds 5 to 10 knots. Bay waters smooth.
.MONDAY...Southeast winds 5 to 10 knots. Bay waters smooth. A
chance of showers and thunderstorms.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters smooth.
.TUESDAY...Southeast winds 5 to 10 knots. Bay waters smooth. A
chance of showers and thunderstorms in the morning, then a slight
chance of showers and thunderstorms in the afternoon.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots becoming south
after midnight. Bay waters smooth.
.WEDNESDAY...North winds around 5 knots becoming southeast in the
afternoon. Bay waters smooth. A chance of showers and
thunderstorms.
.WEDNESDAY NIGHT...South winds 5 to 10 knots becoming west after
midnight. Bay waters smooth. A slight chance of showers and
thunderstorms.
.THURSDAY...Northwest winds around 5 knots becoming northeast in
the afternoon. Bay waters smooth. A chance of showers and
thunderstorms.
.THURSDAY NIGHT...East winds 5 to 10 knots. Bay waters smooth. A
chance of showers and thunderstorms.

$$

GMZ350-355-202130-
Coastal waters from Freeport to the Matagorda Ship Channel out
20 NM-Coastal waters from High Island to Freeport out 20 NM-
342 AM CDT Sun Aug 20 2017

.TODAY...East winds 5 to 10 knots. Seas 1 to 2 feet.
.TONIGHT...Southeast winds 10 to 15 knots. Seas 1 to 2 feet.
.MONDAY...Southeast winds around 10 knots. Seas 2 feet. A chance
of showers and thunderstorms.
.MONDAY NIGHT...Southeast winds 10 to 15 knots decreasing to 5 to
10 knots after midnight. Seas 2 feet.
.TUESDAY...Southeast winds 5 to 10 knots. 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.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 to 2 feet.
.WEDNESDAY...East winds 5 to 10 knots. Seas 1 to 2 feet. A chance
of showers and thunderstorms.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 to
2 feet. A slight chance of showers and thunderstorms.
.THURSDAY...Southeast winds 5 to 10 knots. Seas 1 to 2 feet. A
chance of showers and thunderstorms.
.THURSDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 to
2 feet. A chance of showers and thunderstorms.

$$

GMZ370-375-202130-
Waters from Freeport to the Matagorda Ship Channel from 20 to
60 NM-Waters from High Island to Freeport from 20 to 60 NM-
342 AM CDT Sun Aug 20 2017

.TODAY...East winds 5 to 10 knots. Seas 1 to 2 feet.
.TONIGHT...Southeast winds 10 to 15 knots. Seas 1 to 2 feet. A
slight chance of showers and thunderstorms after midnight.
.MONDAY...Southeast winds around 10 knots. Seas 2 feet. A chance
of showers and thunderstorms.
.MONDAY NIGHT...Southeast winds 10 to 15 knots decreasing to 5 to
10 knots after midnight. Seas 2 feet. A slight chance of showers
and thunderstorms after midnight.
.TUESDAY...East 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.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 feet. A
slight chance of showers and thunderstorms after midnight.
.WEDNESDAY...East winds around 5 knots. Seas 2 feet. A slight
chance of showers and thunderstorms.
.WEDNESDAY NIGHT...Southeast winds around 5 knots. Seas 2 feet. A
slight chance of showers and thunderstorms.
.THURSDAY...Southeast winds 5 to 10 knots. Seas 1 to 2 feet. A
chance of showers and thunderstorms.
.THURSDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 to
2 feet. A chance of showers and thunderstorms.

$$



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