Coastal Waters Forecast
Issued by NWS Tampa Bay Area, FL

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FZUS52 KTBW 211510
CWFTBW

Coastal Waters Forecast for Florida
National Weather Service Tampa Bay Area - Ruskin FL
1010 AM EST Tue Nov 21 2017

Gulf coastal waters from Bonita Beach to the mouth of the
Suwannee River out to 60 NM.

Important notice to mariners...marine forecasts are issued at least
four times a day. Boaters on extended trips should routinely monitor
subsequent forecast issuances and updates for the latest marine
weather information.

The wave heights are forecast as significant wave height which
is the average of the highest one-third of the waves.
The highest waves may rarely be twice the significant wave height.
The winds and seas near thunderstorms may be higher than forecast.

GMZ800-212200-
SYNOPSIS FOR THE COASTAL WATERS FROM BONITA BEACH TO SUWANNEE RIVER-
1010 AM EST Tue Nov 21 2017

.SYNOPSIS...High pressure off the Mid Atlantic coast early this
morning will move further to the east over the Atlantic Ocean today
as an upper level disturbance over the Gulf moves east across the
Florida peninsula. At the same time a stalled frontal boundary across
the Florida Straits will lift back to the north as a warm front.
Increasing moisture combined with the trough and warm front will
support scattered to numerous showers and isolated thunderstorms
over the Gulf waters today. On Wednesday an area of low pressure will
develop over the Gulf. This low will then move east northeast across
the northern Florida peninsula during Thursday and Thursday night
and into the Atlantic on Friday. Sufficient moisture combined with
this storm system will continue to support scattered to numerous
showers and isolated thunderstorms over the waters through Friday.
Pleasant dry weather will return to the waters on Saturday as high
pressure builds in over the region.

$$

GMZ830-212200-
Tampa Bay waters-
1010 AM EST Tue Nov 21 2017

.THIS AFTERNOON...Southeast winds 5 to 10 knots becoming south late
in the afternoon. Bay and inland waters smooth. A chance of showers
and a slight chance of thunderstorms.
.TONIGHT...Varialbe winds around 5 knots. Bay and inland waters
smooth. A slight chance of showers in the evening.
.WEDNESDAY...Variable winds around 5 knots becoming northwest 5 to
10 knots late in the afternoon. Bay and inland waters smooth. A
slight chance of showers in the morning, then a chance of showers and
a slight chance of thunderstorms in the afternoon.
.WEDNESDAY NIGHT...Northeast winds around 5 knots becoming east
around 10 knots toward morning. Bay and inland waters a light chop.
A chance of showers and a slight chance of thunderstorms after
midnight.
.THURSDAY...Southeast winds around 10 knots becoming west 5 to
10 knots late in the afternoon. Bay and inland waters a light chop.
A chance of showers and a slight chance of thunderstorms.
.THURSDAY NIGHT...North winds around 5 knots becoming northeast
around 10 knots after midnight. Bay and inland waters a light chop.
Showers likely and a slight chance of thunderstorms.
.FRIDAY...Northeast winds around 10 knots. Bay and inland waters a
light chop. A chance of showers and a slight chance of
thunderstorms.
.FRIDAY NIGHT...North winds around 10 knots. Bay and inland waters a
light chop. A slight chance of thunderstorms.
.SATURDAY...Northwest winds around 10 knots. Bay and inland waters a
light chop.

$$

GMZ836-212200-
Charlotte Harbor and Pine Island Sound-
1010 AM EST Tue Nov 21 2017

.THIS AFTERNOON...Southeast winds around 10 knots becoming southwest
5 to 10 knots late in the afternoon. Bay and inland waters a light
chop. A chance of showers and a slight chance of thunderstorms.
.TONIGHT...Variable winds around 5 knots. Bay and inland waters
smooth.
.WEDNESDAY...Northeast winds around 5 knots becoming northwest
5 to 10 knots in the afternoon. Bay and inland waters smooth.
A slight chance of showers in the morning, then a chance of showers
and a slight chance of thunderstorms in the afternoon.
.WEDNESDAY NIGHT...Northwest winds around 5 knots becoming east
overnight. Bay and inland waters smooth. A slight chance of
thunderstorms.
.THURSDAY...Southeast winds around 5 knots becoming southwest in the
afternoon. Bay and inland waters smooth. A chance of showers and a
slight chance of thunderstorms.
.THURSDAY NIGHT...West winds around 5 knots becoming northwest late
in the evening, then becoming northeast overnight. Bay and inland
waters smooth. Showers likely and a slight chance of thunderstorms.
.FRIDAY...North winds around 5 knots. Bay and inland waters smooth.
A chance of showers and a slight chance of thunderstorms.
.FRIDAY NIGHT...North winds around 5 knots. Bay and inland waters
smooth. A slight chance of thunderstorms.
.SATURDAY...Northwest winds around 10 knots. Bay and inland waters a
light chop.

$$

GMZ856-212200-
Coastal waters from Bonita Beach to Englewood FL out 20 NM-
1010 AM EST Tue Nov 21 2017

.THIS AFTERNOON...Southeast winds around 10 knots becoming south
5 to 10 knots late in the afternoon. Seas 2 to 3 feet. Bay and
inland waters a light chop. A chance of showers and a slight chance
of thunderstorms.
.TONIGHT...South winds around 5 knots becoming northeast overnight.
Seas 2 feet or less. Bay and inland waters smooth. A slight chance of
showers in the evening.
.WEDNESDAY...East winds around 5 knots becoming northwest 5 to
10 knots late in the afternoon. Seas 2 feet or less. Bay and inland
waters smooth. A slight chance of showers in the morning, then a
chance of showers and a slight chance of thunderstorms in the
afternoon.
.WEDNESDAY NIGHT...North winds around 5 knots becoming east around
10 knots toward morning. Seas 2 feet or less. Bay and inland waters
a light chop. A slight chance of thunderstorms.
.THURSDAY...Southeast winds around 10 knots becoming southwest in
the afternoon. Seas 2 feet. Bay and inland waters a light chop.
A chance of showers and a slight chance of thunderstorms.
.THURSDAY NIGHT...West winds around 5 knots becoming southeast after
midnight, then becoming east around 10 knots toward morning. Seas 2
feet. Bay and inland waters a light chop. Showers likely and a slight
chance of thunderstorms.
.FRIDAY...Northeast winds around 10 knots becoming north in the
afternoon. Seas 2 feet. Bay and inland waters a light chop. A chance
of showers and a slight chance of thunderstorms.
.FRIDAY NIGHT...North winds around 10 knots. Seas 2 feet. Bay and
inland waters a light chop. A slight chance of thunderstorms.
.SATURDAY...Northwest winds around 10 knots. Seas 2 feet. Bay and
inland waters a light chop.

$$

GMZ876-212200-
Waters from Bonita Beach to Englewood FL out 20 to 60 NM-
1010 AM EST Tue Nov 21 2017

.THIS AFTERNOON...Southeast winds around 10 knots becoming south 5 to
10 knots late in the afternoon. Seas 2 to 4 feet. A chance of
showers. A slight chance of thunderstorms in the afternoon.
.TONIGHT...South winds around 5 knots becoming east overnight. Seas
2 feet. A slight chance of showers in the evening.
.WEDNESDAY...East winds around 5 knots becoming northeast in the
afternoon. Seas 2 feet or less. A slight chance of showers in the
morning, then a chance of showers and a slight chance of
thunderstorms in the afternoon.
.WEDNESDAY NIGHT...Northeast winds around 5 knots becoming southeast
around 10 knots overnight. Seas 2 feet. A slight chance of
thunderstorms.
.THURSDAY...South winds around 10 knots becoming southwest in the
afternoon. Seas 2 feet. A chance of showers in the morning. A slight
chance of thunderstorms. Showers likely in the afternoon.
.THURSDAY NIGHT...Southwest winds around 10 knots becoming east
after midnight. Seas 2 to 3 feet. Showers likely and a slight chance
of thunderstorms.
.FRIDAY...Northeast winds around 10 knots. Seas 2 to 3 feet. A chance
of showers and a slight chance of thunderstorms.
.FRIDAY NIGHT...North winds around 10 knots. Seas 2 to 3 feet.
A slight chance of thunderstorms.
.SATURDAY...North winds around 10 knots. Seas 2 feet.

$$

GMZ853-212200-
Coastal waters from Englewood to Tarpon Springs FL out 20 NM-
1010 AM EST Tue Nov 21 2017

.THIS AFTERNOON...Southeast winds around 10 knots diminishing to
5 to 10 knots late in the afternoon. Seas 2 to 3 feet. Bay and
inland waters a light chop. A chance of showers and a slight chance
of thunderstorms.
.TONIGHT...East winds around 5 knots. Seas 2 feet. Bay and inland
waters smooth. A slight chance of showers in the evening.
.WEDNESDAY...East winds around 5 knots becoming northwest 5 to
10 knots late in the afternoon. Seas 2 feet or less. Bay and inland
waters smooth. A slight chance of showers in the morning, then a
chance of showers and a slight chance of thunderstorms in the
afternoon.
.WEDNESDAY NIGHT...North winds 5 to 10 knots becoming east around 10
knots in the late evening and overnight. Seas 2 feet. Bay and inland
waters a light chop. A slight chance of thunderstorms. A chance of
showers after midnight.
.THURSDAY...Southeast winds around 10 knots becoming west late in
the afternoon. Seas 2 feet. Bay and inland waters a light chop.
A chance of showers and a slight chance of thunderstorms.
.THURSDAY NIGHT...Northwest winds around 10 knots becoming northeast
in the late evening and overnight. Seas 2 feet. Bay and inland waters
a light chop. Showers likely and a slight chance of thunderstorms.
.FRIDAY...Northeast winds around 10 knots. Seas 2 feet. Bay and
inland waters a light chop. A chance of showers and a slight chance
of thunderstorms.
.FRIDAY NIGHT...North winds around 10 knots. Seas 2 feet. Bay and
inland waters a light chop. A slight chance of thunderstorms.
.SATURDAY...Northwest winds around 10 knots. Seas 2 feet. Bay and
inland waters a light chop.

$$

GMZ873-212200-
Waters from Englewood to Tarpon Springs FL out 20 to 60 NM-
1010 AM EST Tue Nov 21 2017

.THIS AFTERNOON...Southeast winds 10 to 15 knots becoming south 5 to
10 knots late in the afternoon. Seas 2 to 4 feet. A chance of
showers and a slight chance of thunderstorms.
.TONIGHT...Southeast winds around 5 knots. Seas 2 feet. A chance of
showers in the evening.
.WEDNESDAY...East winds around 5 knots becoming northeast late in
the afternoon. Seas 2 feet or less. A slight chance of showers in the
morning, then a chance of showers and a slight chance of
thunderstorms in the afternoon.
.WEDNESDAY NIGHT...Northeast winds around 10 knots becoming southeast
toward morning. Seas 2 feet. A chance of showers and a slight chance
of thunderstorms.
.THURSDAY...Southeast winds around 10 knots becoming southwest early
in the afternoon, then becoming northwest late in the afternoon.
Seas 2 to 3 feet. A chance of showers in the morning. A slight chance
of thunderstorms. Showers likely in the afternoon.
.THURSDAY NIGHT...North winds around 10 knots becoming northeast in
the late evening and overnight. Seas 2 to 3 feet. Showers likely and
a slight chance of thunderstorms.
.FRIDAY...Northeast winds around 10 knots. Seas 2 to 3 feet.
A chance of showers and a slight chance of thunderstorms.
.FRIDAY NIGHT...North winds around 10 knots. Seas 2 to 3 feet.
A slight chance of thunderstorms.
.SATURDAY...North winds around 10 knots. Seas 2 feet.

$$

GMZ850-212200-
Coastal waters from Tarpon Springs to Suwannee River FL out 20 NM-
1010 AM EST Tue Nov 21 2017

.THIS AFTERNOON...Southeast winds around 10 knots diminishing to
5 to 10 knots late in the afternoon. Seas 2 feet. Bay and inland
waters a light chop. A chance of showers and a slight chance of
thunderstorms.
.TONIGHT...East winds around 5 knots. Seas 2 feet. Bay and inland
waters smooth. A slight chance of showers in the evening.
.WEDNESDAY...East winds around 5 knots becoming northwest 5 to
10 knots late in the afternoon. Seas 2 feet or less. Bay and inland
waters smooth. A slight chance of showers in the morning, then a
chance of showers and a slight chance of thunderstorms in the
afternoon.
.WEDNESDAY NIGHT...East winds around 10 knots. Seas 2 feet. Bay and
inland waters a light chop. A chance of showers and a slight chance
of thunderstorms.
.THURSDAY...Southeast winds around 10 knots becoming north in the
afternoon. Seas 2 feet. Bay and inland waters a light chop. Showers
likely in the morning. A slight chance of thunderstorms. A chance of
showers in the afternoon.
.THURSDAY NIGHT...Northeast winds around 10 knots. Seas 2 feet. Bay
and inland waters a light chop. A chance of showers and a slight
chance of thunderstorms.
.FRIDAY...Northeast winds around 10 knots. Seas 2 feet. Bay and
inland waters a light chop. A slight chance of thunderstorms.
.FRIDAY NIGHT...North winds around 10 knots. Seas 2 feet. Bay and
inland waters a light chop. A slight chance of thunderstorms.
.SATURDAY...Northwest winds around 10 knots. Seas 2 feet or less.
Bay and inland waters a light chop.

$$

GMZ870-212200-
Waters from Tarpon Springs to Suwannee River FL out 20 to 60 NM-
1010 AM EST Tue Nov 21 2017

.THIS AFTERNOON...Southeast winds 10 to 15 knots diminishing to
around 10 knots late in the afternoon. Seas 2 to 4 feet. A chance of
showers and a slight chance of thunderstorms.
.TONIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. A chance
of showers in the evening, then a slight chance of showers after
midnight.
.WEDNESDAY...East winds 5 to 10 knots becoming northeast in the
afternoon. Seas 2 feet. A slight chance of showers in the morning,
then a chance of showers and a slight chance of thunderstorms in the
afternoon.
.WEDNESDAY NIGHT...Northeast winds around 10 knots becoming southeast
10 to 15 knots overnight. Seas 2 feet. A chance of showers in the
evening. A slight chance of thunderstorms. Showers likely after
midnight.
.THURSDAY...Southeast winds around 10 knots becoming northeast
around 15 knots in the late morning and afternoon. Seas 2 to 3 feet.
Showers likely in the morning. A slight chance of thunderstorms. A
chance of showers in the afternoon.
.THURSDAY NIGHT...Northeast winds around 15 knots. Seas 2 to 3 feet.
A chance of showers and a slight chance of thunderstorms.
.FRIDAY...Northeast winds around 15 knots. Seas 2 to 3 feet. A
slight chance of thunderstorms.
.FRIDAY NIGHT...North winds around 10 knots. Seas 2 feet. A slight
chance of thunderstorms.
.SATURDAY...Northwest winds around 10 knots. Seas 2 feet or less.

$$



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