Coastal Waters Forecast
Issued by NWS Corpus Christi, TX

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000
FZUS54 KCRP 230855
CWFCRP

Coastal Waters Forecast
National Weather Service Corpus Christi TX
355 AM CDT Wed Aug 23 2017

Middle Texas coastal waters from Baffin Bay to Matagorda ship channel
out to 60 nautical miles.

Seas are provided as a range of the average height of the highest 1/3
of the waves...along with occasional height of the average highest
10 percent of the waves.

GMZ200-232200-
355 AM CDT Wed Aug 23 2017

.SYNOPSIS FOR THE MIDDLE TEXAS COASTAL WATERS...
A weak east flow will prevail today Wednesday with relatively flat
seas. Big changes are then expected as the remnants of Harvey are
expected to develop into a tropical cyclone and move towards the
region. Winds and seas will be on the increase. The system is
now expected to move to the northwest toward the Middle Texas
coast by early Friday morning. The chance for rain and strong wind
will increase significantly Thursday and Friday as this potential
tropical system moves toward the northwest. There remains
significant uncertainty regarding the location and strength of
this system. Mariners are advised to monitor the latest forecasts
from the National Hurricane Center.

$$

GMZ235-232200-
Bays and Waterways from Port Aransas to Port O`Connor-
355 AM CDT Wed Aug 23 2017

.TODAY...Southwest wind up to 5 knots shifting north around
5 knots late in the morning, then shifting east early in the
afternoon becoming around 10 knots late. Bays smooth. A slight
chance of showers and thunderstorms in the afternoon.
.TONIGHT...East wind 5 to 10 knots. Bays smooth. A slight chance
of showers and thunderstorms after midnight.
.THURSDAY...Northeast wind 10 to 15 knots. Bays slightly choppy
to occasionally choppy. A chance of showers and thunderstorms.
.THURSDAY NIGHT...East wind 10 to 15 knots becoming northeast
15 to 20 knots after midnight. Bays choppy to occasionally rough.
A chance of showers and thunderstorms.
.FRIDAY...Northeast wind 20 to 25 knots becoming north 25 to
30 knots in the afternoon. Bays rough to occasionally very rough.
Showers and thunderstorms.
.FRIDAY NIGHT...Northwest wind 25 to 30 knots shifting west after
midnight. Bays rough. Showers and thunderstorms.
.SATURDAY...West wind 20 to 25 knots decreasing to 15 to 20 knots
in the afternoon. Bays choppy to occasionally rough. Showers and
thunderstorms.
.SATURDAY NIGHT...West wind 10 to 15 knots. Bays slightly choppy
to occasionally choppy. Showers and thunderstorms likely.
.SUNDAY...Southwest wind around 15 knots shifting south in the
afternoon. Bays slightly choppy to choppy. Showers and
thunderstorms likely.
.SUNDAY NIGHT...South wind 15 to 20 knots shifting southwest
after midnight. Bays choppy. A chance of showers and
thunderstorms.

$$

GMZ230-232200-
Bays and Waterways from Baffin Bay to Port Aransas-
355 AM CDT Wed Aug 23 2017

.TODAY...Southeast wind up to 5 knots becoming east in the late
morning and afternoon. Bays smooth.
.TONIGHT...East wind 5 to 10 knots. Bays smooth.
.THURSDAY...Northeast wind 5 to 10 knots increasing to 10 to
15 knots in the afternoon. Bays slightly choppy to occasionally
choppy. A chance of showers and thunderstorms.
.THURSDAY NIGHT...East wind 10 to 15 knots becoming northeast
15 to 20 knots after midnight. Bays choppy to occasionally rough.
A chance of showers and thunderstorms.
.FRIDAY...North wind 20 to 25 knots increasing to 25 to 30 knots
in the afternoon. Bays rough to occasionally very rough. Showers
and thunderstorms likely.
.FRIDAY NIGHT...Northwest wind 25 to 30 knots becoming west 15 to
20 knots after midnight. Bays rough. Showers and thunderstorms
likely.
.SATURDAY...West wind 15 to 20 knots decreasing to 10 to 15 knots
in the afternoon. Bays choppy. Showers and thunderstorms likely.
.SATURDAY NIGHT...West wind 10 to 15 knots. Bays slightly choppy
to occasionally choppy. A chance of showers and thunderstorms.
.SUNDAY...West wind 10 to 15 knots shifting southwest in the
afternoon. Bays slightly choppy to occasionally choppy. A chance
of showers and thunderstorms.
.SUNDAY NIGHT...Southwest wind 10 to 15 knots increasing to 15 to
20 knots after midnight. Bays choppy. A chance of showers and
thunderstorms.

$$

GMZ255-232200-
Coastal waters from Port Aransas to Matagorda Ship Channel out
20 NM-
355 AM CDT Wed Aug 23 2017

.TODAY...Southeast wind up to 5 knots becoming northeast in the
late morning and early afternoon, then shifting east late. Seas
2 feet. A slight chance of showers and thunderstorms.
.TONIGHT...East wind 5 to 10 knots. Seas 2 to 3 feet. A slight
chance of showers and thunderstorms after midnight.
.THURSDAY...Northeast wind 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. A chance of showers and
thunderstorms.
.THURSDAY NIGHT...East wind around 15 knots becoming northeast
20 to 25 knots after midnight. Seas 4 to 6 feet with occasional
seas up to 8 feet building to 6 to 8 feet with occasional seas up
to 10 feet after midnight. Showers and thunderstorms likely.
.FRIDAY...Northeast wind 25 to 30 knots. Seas 9 to 11 feet with
occasional seas up to 14 feet. Showers and thunderstorms.
.FRIDAY NIGHT...West wind 25 to 30 knots. Seas 8 to 10 feet with
occasional seas up to 13 feet. Showers and thunderstorms.
.SATURDAY...West wind 25 to 30 knots decreasing to 20 to 25 knots
in the afternoon. Seas 7 to 9 feet with occasional seas up to
11 feet. Showers and thunderstorms.
.SATURDAY NIGHT...West wind 10 to 15 knots increasing to 15 to
20 knots after midnight. Seas 5 to 7 feet with occasional seas up
to 9 feet. Showers and thunderstorms likely.
.SUNDAY...Southwest wind 15 to 20 knots shifting south in the
afternoon. Seas 3 to 5 feet with occasional seas up to 6 feet.
Showers and thunderstorms likely.
.SUNDAY NIGHT...South wind 15 to 20 knots shifting southwest
after midnight. Seas 2 to 4 feet with occasional seas up to
5 feet. A chance of showers and thunderstorms.

$$

GMZ250-232200-
Coastal waters from Baffin Bay to Port Aransas out 20 NM-
355 AM CDT Wed Aug 23 2017

.TODAY...Southeast wind around 5 knots shifting east in the late
morning and afternoon. Seas 2 feet. A slight chance of showers
and thunderstorms in the morning.
.TONIGHT...East wind 5 to 10 knots. Seas 2 to 3 feet. A slight
chance of showers and thunderstorms after midnight.
.THURSDAY...Northeast wind 5 to 10 knots increasing to 10 to
15 knots in the afternoon. Seas 2 to 4 feet with occasional seas
up to 5 feet. A chance of showers and thunderstorms.
.THURSDAY NIGHT...Northeast wind 15 to 20 knots. Seas 4 to 6 feet
with occasional seas up to 8 feet building to 6 to 8 feet with
occasional seas up to 10 feet after midnight. Showers and
thunderstorms likely.
.FRIDAY...North wind 25 to 30 knots. Seas 8 to 10 feet with
occasional seas up to 13 feet. Showers and thunderstorms.
.FRIDAY NIGHT...West wind 25 to 30 knots decreasing to 20 to
25 knots after midnight. Seas 8 to 10 feet with occasional seas
up to 13 feet subsiding to 5 to 7 feet with occasional seas up to
9 feet after midnight. Showers and thunderstorms likely.
.SATURDAY...West wind 15 to 20 knots decreasing to 10 to 15 knots
in the afternoon. Seas 5 to 7 feet with occasional seas up to
9 feet. Showers and thunderstorms likely.
.SATURDAY NIGHT...Southwest wind 5 to 10 knots becoming west
10 to 15 knots after midnight. Seas 4 to 6 feet with occasional
seas up to 8 feet. A chance of showers and thunderstorms.
.SUNDAY...West wind 10 to 15 knots shifting south in the
afternoon. Seas 2 to 4 feet with occasional seas up to 5 feet. A
chance of showers and thunderstorms.
.SUNDAY NIGHT...South wind 15 to 20 knots shifting southwest
after midnight. Seas 2 to 3 feet. A chance of showers and
thunderstorms.

$$

GMZ275-232200-
Waters from Port Aransas to Matagorda Ship Channel from 20 to
60 NM-
355 AM CDT Wed Aug 23 2017

.TODAY...East wind around 5 knots shifting northeast in the late
morning and afternoon. Seas 2 to 3 feet. A slight chance of
showers and thunderstorms.
.TONIGHT...East wind around 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. A slight chance of showers and
thunderstorms after midnight.
.THURSDAY...Northeast wind 10 to 15 knots increasing to 15 to
20 knots in the afternoon. Seas 4 to 6 feet with occasional seas
up to 8 feet. Showers and thunderstorms likely.
.THURSDAY NIGHT...East wind 15 to 20 knots becoming northeast
20 to 25 knots after midnight. Seas 7 to 9 feet with occasional
seas up to 11 feet building to 9 to 11 feet with occasional seas
up to 14 feet after midnight. Showers and thunderstorms likely.
.FRIDAY...Northeast wind 25 to 30 knots shifting north in the
afternoon. Seas 12 to 14 feet with occasional seas up to 18 feet.
Showers and thunderstorms.
.FRIDAY NIGHT...Southwest wind 25 to 30 knots. Seas 11 to 13 feet
with occasional seas up to 17 feet. Showers and thunderstorms.
.SATURDAY...Southwest wind 25 to 30 knots decreasing to 20 to
25 knots in the afternoon. Seas 9 to 11 feet with occasional seas
up to 14 feet subsiding to 7 to 9 feet with occasional seas up to
11 feet in the afternoon. Showers and thunderstorms likely.
.SATURDAY NIGHT...Southwest wind 15 to 20 knots. Seas 5 to 7 feet
with occasional seas up to 9 feet. Showers and thunderstorms
likely.
.SUNDAY...Southwest wind 15 to 20 knots shifting south in the
afternoon. Seas 4 to 6 feet with occasional seas up to 8 feet.
Showers and thunderstorms likely.
.SUNDAY NIGHT...South wind 15 to 20 knots shifting southwest
after midnight. Seas 3 to 4 feet with occasional seas up to
5 feet. A chance of showers and thunderstorms.

$$

GMZ270-232200-
Waters from Baffin Bay to Port Aransas from 20 to 60 NM-
355 AM CDT Wed Aug 23 2017

.TODAY...East wind around 5 knots shifting northeast in the late
morning and afternoon. Seas 2 feet. A slight chance of showers
and thunderstorms.
.TONIGHT...East wind 5 to 10 knots. Seas 2 to 3 feet. A slight
chance of showers and thunderstorms after midnight.
.THURSDAY...Northeast wind 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. A chance of showers and
thunderstorms.
.THURSDAY NIGHT...East wind 15 to 20 knots becoming northeast
20 to 25 knots after midnight. Seas 6 to 8 feet with occasional
seas up to 10 feet building to 8 to 10 feet with occasional seas
up to 13 feet after midnight. Showers and thunderstorms likely.
.FRIDAY...Northeast wind 25 to 30 knots shifting northwest in the
afternoon. Seas 10 to 12 feet with occasional seas up to 15 feet
building to 12 to 14 feet with occasional seas up to 18 feet in
the afternoon. Showers and thunderstorms.
.FRIDAY NIGHT...West wind 25 to 30 knots decreasing to 20 to
25 knots after midnight. Seas 10 to 12 feet with occasional seas
up to 15 feet. Showers and thunderstorms likely.
.SATURDAY...Southwest wind 15 to 20 knots. Seas 7 to 9 feet with
occasional seas up to 11 feet. Showers and thunderstorms likely.
.SATURDAY NIGHT...Southwest wind 15 to 20 knots. Seas 4 to 6 feet
with occasional seas up to 8 feet. A chance of showers and
thunderstorms.
.SUNDAY...Southwest wind 15 to 20 knots becoming south 10 to
15 knots in the afternoon. Seas 4 to 6 feet with occasional seas
up to 8 feet. A chance of showers and thunderstorms.
.SUNDAY NIGHT...South wind 15 to 20 knots shifting southwest
after midnight. Seas 3 to 4 feet with occasional seas up to
5 feet. A chance of showers and thunderstorms.

$$



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