Coastal Waters Forecast
Issued by NWS Houston/Galveston, TX

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FZUS54 KHGX 151020
CWFHGX

Coastal Waters Forecast
National Weather Service Houston/Galveston TX
420 AM CST Fri Dec 15 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.

GMZ300-152300-
Synopsis for High Island to the Matagorda Ship Channel out 60
nautical miles including Galveston and Matagorda Bays
420 AM CST Fri Dec 15 2017

.SYNOPSIS FOR HIGH ISLAND TO MATAGORDA SHIP CHANNEL OUT 60 NM...
Strong north winds and elevated seas will prevail across much of
the coastal waters today...with conditions slowly improving
through the day from the north as high pressure builds into the
region. A coastal trough will develop across the mid and lower
Texas coast on Saturday before moving northeasterly up the coast
Saturday night. Expect unsettled weather as this occurs with
increasing winds, building seas, showers or thunderstorms, and
some sea fog. This disturbance will push east of the area Sunday
bringing an end to the rain...but periods of fog will remain a
possibility until the next front pushes through on Tuesday.

$$

GMZ330-335-152300-
Matagorda Bay-Galveston Bay-
420 AM CST Fri Dec 15 2017

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 AM CST THIS MORNING...

.TODAY...North winds 15 to 20 knots decreasing to 10 to 15 knots
in the afternoon. Bay waters choppy becoming slightly choppy in
the afternoon. A chance of showers in the morning. A slight
chance of showers in the afternoon.
.TONIGHT...Northeast winds 5 to 10 knots. Bay waters smooth.
.SATURDAY...East winds 5 to 10 knots increasing to 10 to 15 knots
in the afternoon. Bay waters smooth becoming slightly choppy in
the afternoon. A slight chance of showers in the morning, then a
chance of showers and isolated thunderstorms in the afternoon.
.SATURDAY NIGHT...East winds 15 to 20 knots becoming west after
midnight. Bay waters choppy. Showers likely and isolated
thunderstorms.
.SUNDAY...North winds 5 to 10 knots becoming east in the
afternoon. Bay waters smooth. A chance of showers and
thunderstorms in the morning, then a slight chance of showers and
thunderstorms in the afternoon.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots becoming east after
midnight. Bay waters smooth. A slight chance of showers.
.MONDAY...Northeast winds 5 to 10 knots. Bay waters smooth. A
chance of showers.
.MONDAY NIGHT...Northwest winds 5 to 10 knots becoming north
10 to 15 knots after midnight. Bay waters smooth becoming
slightly choppy after midnight. A chance of showers.
.TUESDAY...North winds 10 to 15 knots decreasing to 5 to 10 knots
in the afternoon. Bay waters slightly choppy becoming smooth in
the afternoon. A slight chance of showers.
.TUESDAY NIGHT...Northeast winds 5 to 10 knots. Bay waters
smooth. A slight chance of showers.

$$

GMZ350-355-152300-
Coastal waters from Freeport to the Matagorda Ship Channel out
20 NM-Coastal waters from High Island to Freeport out 20 NM-
420 AM CST Fri Dec 15 2017

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM CST THIS AFTERNOON...

.TODAY...North winds 15 to 25 knots becoming northeast 15 to
20 knots in the afternoon. Seas 3 to 5 feet. A chance of showers.
.TONIGHT...Northeast winds 10 to 15 knots. Seas 2 to 3 feet.
.SATURDAY...East winds 10 to 15 knots increasing to 15 to
20 knots in the afternoon. Seas 2 to 4 feet. A slight chance of
showers in the morning, then a chance of showers and isolated
thunderstorms in the afternoon.
.SATURDAY NIGHT...Southeast winds 15 to 20 knots becoming
southwest 20 to 25 knots after midnight. Seas 3 to 5 feet.
Showers likely and isolated thunderstorms.
.SUNDAY...North winds 5 to 10 knots becoming east in the
afternoon. Seas 2 to 4 feet. A chance of showers and
thunderstorms in the morning, then a slight chance of showers and
thunderstorms in the afternoon.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet.
A chance of showers.
.MONDAY...Northeast winds 5 to 10 knots. Seas 2 to 3 feet.
Showers likely.
.MONDAY NIGHT...North winds 10 to 15 knots. Seas 2 to 3 feet. A
chance of showers.
.TUESDAY...North winds 10 to 15 knots. Seas 2 to 3 feet. A slight
chance of showers.
.TUESDAY NIGHT...Northeast winds around 10 knots. Seas 2 feet. A
slight chance of showers.

$$

GMZ370-375-152300-
Waters from Freeport to the Matagorda Ship Channel from 20 to
60 NM-Waters from High Island to Freeport from 20 to 60 NM-
420 AM CST Fri Dec 15 2017

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON...

.TODAY...North winds 20 to 30 knots becoming northeast 15 to
25 knots in the afternoon. Seas 6 to 8 feet with occasional seas
up to 10 feet subsiding to 4 to 6 feet with occasional seas up to
7 feet in the afternoon. Showers likely in the morning, then a
chance of showers in the afternoon.
.TONIGHT...Northeast winds 10 to 15 knots. Seas 2 to 4 feet. A
slight chance of showers.
.SATURDAY...East winds 10 to 15 knots increasing to 15 to
20 knots in the afternoon. Seas 2 to 3 feet building to 3 to
5 feet in the afternoon. A slight chance of showers in the
morning, then a chance of showers and isolated thunderstorms in
the afternoon.
.SATURDAY NIGHT...Southeast winds 15 to 25 knots becoming
southwest 20 to 25 knots after midnight. Seas 4 to 6 feet with
occasional seas up to 7 feet. Showers likely and isolated
thunderstorms.
.SUNDAY...Northwest winds 5 to 10 knots becoming northeast in the
afternoon. Seas 3 to 5 feet. A chance of showers and
thunderstorms.
.SUNDAY NIGHT...East winds around 10 knots becoming south after
midnight. Seas 3 feet. A chance of showers.
.MONDAY...Southwest winds 10 to 15 knots. Seas 3 to 4 feet.
Showers likely.
.MONDAY NIGHT...North winds 10 to 15 knots. Seas 3 to 4 feet. A
chance of showers.
.TUESDAY...North winds 10 to 15 knots. Seas 3 to 5 feet. A slight
chance of showers.
.TUESDAY NIGHT...Northeast winds 10 to 15 knots. Seas 2 to
4 feet. A slight chance of showers.

$$



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