Coastal Waters Forecast
Issued by NWS Houston/Galveston, TX

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FZUS54 KHGX 151532
CWFHGX

Coastal Waters Forecast
National Weather Service Houston/Galveston TX
932 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.

GMZ300-160430-
Synopsis for High Island to the Matagorda Ship Channel out 60
nautical miles including Galveston and Matagorda Bays
932 AM CST Fri Dec 15 2017

.SYNOPSIS FOR HIGH ISLAND TO MATAGORDA SHIP CHANNEL OUT 60 NM...
Strong north winds and elevated seas will slowly improve through
the day as high pressure builds into Southeast Texas. 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.

$$

GMZ330-335-160430-
Matagorda Bay-Galveston Bay-
932 AM CST Fri Dec 15 2017

.REST OF TODAY...Northeast winds 10 to 15 knots. Bay waters
slightly choppy. Showers likely late in the morning, then a
slight chance of showers in the afternoon.
.TONIGHT...Northeast winds 5 to 10 knots. Bay waters smooth.
.SATURDAY...East winds 10 to 15 knots. Bay waters slightly
choppy. A slight chance of showers.
.SATURDAY NIGHT...East winds 15 to 20 knots becoming northwest
after midnight. Bay waters choppy. Patchy fog. Showers and
isolated thunderstorms.
.SUNDAY...North winds 5 to 10 knots becoming east in the
afternoon. Bay waters smooth. A slight chance of showers.
.SUNDAY NIGHT...East winds around 5 knots. Bay waters smooth.
Patchy fog. A slight chance of showers and isolated
thunderstorms.
.MONDAY...East winds around 5 knots. Bay waters smooth. Showers
likely and isolated thunderstorms.
.MONDAY NIGHT...Northeast winds 5 to 10 knots becoming north
after midnight. Bay waters smooth. A chance of showers.
.TUESDAY...North winds 5 to 10 knots. Bay waters smooth. A chance
of showers.
.TUESDAY NIGHT...Northeast winds 5 to 10 knots. Bay waters
smooth. A chance of showers.

$$

GMZ350-355-160430-
Coastal waters from Freeport to the Matagorda Ship Channel out
20 NM-Coastal waters from High Island to Freeport out 20 NM-
932 AM CST Fri Dec 15 2017

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

.REST OF TODAY...Northeast winds near 20 knots. Seas 3 to 5 feet.
Showers likely late in the morning, then a chance of showers in
the afternoon.
.TONIGHT...Northeast winds 10 to 15 knots decreasing to 5 to
10 knots after midnight. 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 in the
afternoon.
.SATURDAY NIGHT...Southeast winds 15 to 20 knots becoming west
after midnight. Seas 3 to 5 feet. Patchy fog. Showers and
isolated thunderstorms.
.SUNDAY...North winds 5 to 10 knots becoming northeast in the
afternoon. Seas 2 to 4 feet. A chance of showers.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet.
Patchy fog. A chance of showers and isolated thunderstorms.
.MONDAY...Southeast winds 5 to 10 knots becoming south in the
afternoon. Seas 2 to 3 feet. Showers likely and isolated
thunderstorms.
.MONDAY NIGHT...Northeast winds 5 to 10 knots becoming north
10 to 15 knots after midnight. Seas 2 to 3 feet. A chance of
showers and isolated thunderstorms.
.TUESDAY...North winds 10 to 15 knots. Seas 3 feet. A chance of
showers.
.TUESDAY NIGHT...Northeast winds 10 to 15 knots. Seas 3 feet. A
chance of showers.

$$

GMZ370-375-160430-
Waters from Freeport to the Matagorda Ship Channel from 20 to
60 NM-Waters from High Island to Freeport from 20 to 60 NM-
932 AM CST Fri Dec 15 2017

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM CST THIS EVENING...

.REST OF TODAY...North winds 20 to 25 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 late in the morning, then
a chance of showers in the afternoon.
.TONIGHT...Northeast winds 15 to 20 knots decreasing to 10 to
15 knots after midnight. Seas 2 to 4 feet.
.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 in the afternoon.
.SATURDAY NIGHT...Southeast winds 15 to 25 knots becoming
southwest 15 to 20 knots after midnight. Seas 4 to 6 feet with
occasional seas up to 7 feet. Showers and isolated thunderstorms.
.SUNDAY...Northwest winds 5 to 10 knots becoming northeast in the
afternoon. Seas 3 to 5 feet. A chance of showers.
.SUNDAY NIGHT...East winds 5 to 10 knots becoming southeast after
midnight. Seas 3 feet. A chance of showers and isolated
thunderstorms.
.MONDAY...South winds 5 to 10 knots. Seas 3 to 4 feet. Showers
likely and isolated thunderstorms.
.MONDAY NIGHT...South winds 10 to 15 knots becoming north after
midnight. Seas 3 to 5 feet. A chance of showers and isolated
thunderstorms.
.TUESDAY...North winds 10 to 15 knots. Seas 4 to 5 feet with
occasional seas up to 6 feet. A chance of showers.
.TUESDAY NIGHT...Northeast winds 10 to 15 knots. Seas 4 to 5 feet
with occasional seas up to 6 feet. A chance of showers.

$$



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