Coastal Waters Forecast
Issued by NWS Houston/Galveston, TX

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FZUS54 KHGX 211520
CWFHGX

Coastal Waters Forecast
National Weather Service Houston/Galveston TX
1020 AM CDT Fri Jul 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.

GMZ300-220415-
Synopsis for High Island to the Matagorda Ship Channel out 60
nautical miles including Galveston and Matagorda Bays
1020 AM CDT Fri Jul 21 2017

.SYNOPSIS FOR HIGH ISLAND TO MATAGORDA SHIP CHANNEL OUT 60 NM...
Mainly early day periodic showers and storms. Light onshore winds
will continue through the end of the week. There will be a
tightening in the pressure gradient Saturday into Sunday, which
will result in an increase in wind speed and wave heights Sunday
into Monday.

$$

GMZ330-335-220415-
Matagorda Bay-Galveston Bay-
1020 AM CDT Fri Jul 21 2017

.TODAY...Southwest winds 5 to 10 knots becoming southeast in the
afternoon. Bay waters smooth. A slight chance of showers and
thunderstorms.
.TONIGHT...South winds 5 to 10 knots. Bay waters smooth. A slight
chance of showers and thunderstorms early in the evening. A
slight chance of showers and thunderstorms after midnight.
.SATURDAY...South winds 5 to 10 knots increasing to 10 to
15 knots in the afternoon. Bay waters smooth becoming slightly
choppy in the afternoon. A chance of showers and thunderstorms.
.SATURDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly
choppy. A chance of showers and thunderstorms.
.SUNDAY...South winds 10 to 15 knots. Bay waters slightly choppy.
A chance of showers and thunderstorms.
.SUNDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly
choppy. A slight chance of showers and thunderstorms early in the
evening.
.MONDAY...South winds 10 to 15 knots. Bay waters slightly choppy.
.MONDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly
choppy.
.TUESDAY...South winds 10 to 15 knots. Bay waters slightly
choppy. A slight chance of showers and thunderstorms.
.TUESDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly
choppy.

$$

GMZ350-355-220415-
Coastal waters from Freeport to the Matagorda Ship Channel out
20 NM-Coastal waters from High Island to Freeport out 20 NM-
1020 AM CDT Fri Jul 21 2017

.TODAY...Southwest winds 5 to 10 knots becoming southeast in the
afternoon. Seas 1 foot. A slight chance of showers and
thunderstorms.
.TONIGHT...Southeast winds around 10 knots becoming south after
midnight. Seas 1 to 2 feet. A slight chance of showers and
thunderstorms in the evening, then a chance of showers and
thunderstorms after midnight.
.SATURDAY...South winds 5 to 10 knots increasing to 10 to
15 knots in the afternoon. Seas 1 to 2 feet. A chance of showers
and thunderstorms.
.SATURDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet. A
chance of showers and thunderstorms.
.SUNDAY...South winds 10 to 15 knots. Seas 2 to 4 feet. A chance
of showers and thunderstorms.
.SUNDAY NIGHT...South winds 10 to 15 knots increasing to 15 to
20 knots after midnight. Seas 3 to 4 feet. A slight chance of
showers and thunderstorms early in the evening.
.MONDAY...South winds 10 to 15 knots. Seas 3 to 4 feet.
.MONDAY NIGHT...South winds 10 to 15 knots. Seas 3 to 4 feet.
.TUESDAY...Southeast winds 10 to 15 knots. Seas 2 to 4 feet. A
slight chance of showers and thunderstorms.
.TUESDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet. A
slight chance of showers and thunderstorms.

$$

GMZ370-375-220415-
Waters from Freeport to the Matagorda Ship Channel from 20 to
60 NM-Waters from High Island to Freeport from 20 to 60 NM-
1020 AM CDT Fri Jul 21 2017

.TODAY...Southwest winds 5 to 10 knots becoming southeast in the
afternoon. Seas 1 to 2 feet. A slight chance of showers and
thunderstorms.
.TONIGHT...Southeast winds 5 to 10 knots becoming south after
midnight. Seas 1 to 2 feet. A slight chance of showers and
thunderstorms in the evening, then a chance of showers and
thunderstorms after midnight.
.SATURDAY...South winds 5 to 10 knots increasing to 10 to
15 knots in the afternoon. Seas 1 to 2 feet. A chance of showers
and thunderstorms.
.SATURDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet. A
chance of showers and thunderstorms.
.SUNDAY...South winds 10 to 15 knots. Seas 3 to 4 feet. A chance
of showers and thunderstorms.
.SUNDAY NIGHT...South winds 10 to 15 knots increasing to 15 to
20 knots after midnight. Seas 3 to 5 feet. A slight chance of
showers and thunderstorms early in the evening.
.MONDAY...South winds 10 to 15 knots. Seas 3 to 5 feet.
.MONDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 4 feet.
.TUESDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. A
slight chance of showers and thunderstorms.
.TUESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to
4 feet. A slight chance of showers and thunderstorms.

$$



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