Coastal Waters Forecast
Issued by NWS Tampa Bay Area, FL

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FZUS52 KTBW 211917
CWFTBW

Coastal Waters Forecast for Florida
National Weather Service Tampa Bay Area - Ruskin FL
317 PM EDT Thu Sep 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.

GMZ800-220430-
SYNOPSIS FOR THE COASTAL WATERS FROM BONITA BEACH TO SUWANNEE RIVER-
317 PM EDT Thu Sep 21 2017

.SYNOPSIS...High pressure will continue to ridge across the northern
Gulf of Mexico through the end of the week with winds and seas
remaining below headline criteria. Winds and seas will increase
slightly this weekend in response to a tighter pressure gradient as
Hurricane Maria lifts north of the Bahamas...staying well east of
Florida. High pressure will build back in early next week with benign
winds and seas continuing.

$$

GMZ830-220430-
Tampa Bay waters-
317 PM EDT Thu Sep 21 2017

.TONIGHT...Northeast winds 5 to 10 knots then becoming east around
15 knots late in the evening, then diminishing to 5 to 10 knots
after midnight. Bay and inland waters a moderate chop. Isolated
thunderstorms in the evening.
.FRIDAY...Northeast winds around 10 knots. Bay and inland waters a
light chop. Scattered showers and isolated thunderstorms in the
afternoon.
.FRIDAY NIGHT...East winds around 15 knots diminishing to 5 to
10 knots after midnight. Bay and inland waters a moderate chop.
Scattered showers and isolated thunderstorms.
.SATURDAY...Northeast winds around 10 knots. Bay and inland waters a
light chop. Scattered showers and isolated thunderstorms in the
morning, then scattered thunderstorms in the afternoon.
.SATURDAY NIGHT...Northeast winds 5 to 10 knots then becoming east
around 15 knots late in the evening, then becoming northeast 5 to
10 knots after midnight. Bay and inland waters a moderate chop.
Scattered thunderstorms in the evening, then isolated thunderstorms
after midnight.
.SUNDAY...Northeast winds around 10 knots. Bay and inland waters a
light chop. Scattered thunderstorms.
.SUNDAY NIGHT...East winds around 10 knots. Bay and inland waters a
light chop. Scattered thunderstorms in the evening.
.MONDAY...Northeast winds around 10 knots then becoming north around
5 knots in the afternoon. Bay and inland waters a light chop.
Scattered showers.
.MONDAY NIGHT...North winds around 5 knots then becoming northeast
after midnight. Bay and inland waters smooth. Scattered showers in
the evening.
.TUESDAY...East winds around 5 knots then becoming northwest in the
afternoon. Bay and inland waters smooth. Isolated showers.

$$

GMZ836-220430-
Charlotte Harbor and Pine Island Sound-
317 PM EDT Thu Sep 21 2017

.TONIGHT...Northeast winds around 10 knots. Bay and inland waters a
light chop. Isolated thunderstorms in the evening.
.FRIDAY...Northeast winds around 10 knots. Bay and inland waters a
light chop. Scattered showers and isolated thunderstorms in the
afternoon.
.FRIDAY NIGHT...Northeast winds around 10 knots. Bay and inland
waters a light chop. Scattered showers and isolated thunderstorms.
.SATURDAY...Northeast winds around 10 knots. Bay and inland waters a
light chop. Isolated thunderstorms in the morning, then scattered
thunderstorms in the afternoon.
.SATURDAY NIGHT...Northeast winds around 10 knots. Bay and inland
waters a light chop. Scattered thunderstorms in the evening, then
isolated thunderstorms after midnight.
.SUNDAY...Northeast winds around 10 knots. Bay and inland waters a
light chop. Scattered thunderstorms.
.SUNDAY NIGHT...East winds around 10 knots. Bay and inland waters a
light chop. Scattered thunderstorms in the evening.
.MONDAY...East winds around 10 knots then becoming southwest around
5 knots in the afternoon. Bay and inland waters a light chop.
Scattered showers.
.MONDAY NIGHT...West winds around 5 knots then becoming northeast
after midnight. Bay and inland waters smooth. Scattered showers in
the evening.
.TUESDAY...Northeast winds around 5 knots then becoming north late
in the morning, then becoming west in the afternoon. Bay and inland
waters smooth. Scattered showers and isolated thunderstorms.

$$

GMZ856-220430-
Coastal waters from Bonita Beach to Englewood FL out 20 NM-
317 PM EDT Thu Sep 21 2017

.TONIGHT...North winds 5 to 10 knots then becoming east around
15 knots in the late evening and early morning, then becoming
northeast 5 to 10 knots toward morning. Seas 2 feet. Bay and inland
waters a moderate chop. Isolated thunderstorms in the evening.
.FRIDAY...Northeast winds around 10 knots then becoming north late
in the afternoon. Seas 2 feet. Bay and inland waters a light chop.
Scattered showers and isolated thunderstorms in the afternoon.
.FRIDAY NIGHT...North winds around 15 knots then becoming east 5 to
10 knots in the late evening and overnight. Seas 2 feet. Bay and
inland waters a moderate chop. Scattered showers and isolated
thunderstorms.
.SATURDAY...Northeast winds around 10 knots. Seas 2 feet. Bay and
inland waters a light chop. Scattered showers and isolated
thunderstorms in the morning, then scattered thunderstorms in the
afternoon.
.SATURDAY NIGHT...Northeast winds 5 to 10 knots increasing to around
15 knots in the late evening and overnight. Seas 2 feet. Bay and
inland waters a moderate chop. Scattered thunderstorms.
.SUNDAY...Northeast winds around 10 knots. Seas 2 feet. Bay and
inland waters a light chop. Scattered thunderstorms.
.SUNDAY NIGHT...East winds around 10 knots. Seas 2 feet. Bay and
inland waters a light chop. Scattered thunderstorms in the evening,
then isolated thunderstorms after midnight.
.MONDAY...East winds around 10 knots then becoming south around
5 knots late in the afternoon. Seas 2 feet. Bay and inland waters a
light chop. Isolated thunderstorms in the morning. Scattered
showers.
.MONDAY NIGHT...Northwest winds around 5 knots then becoming
northeast after midnight. Seas 2 feet or less. Bay and inland waters
smooth. Scattered showers in the evening. Isolated showers after
midnight.
.TUESDAY...East winds around 5 knots then becoming southeast late in
the morning, then becoming southwest early in the afternoon then
becoming west late in the afternoon. Seas 2 feet or less. Bay and
inland waters smooth. Scattered showers and isolated thunderstorms.

$$

GMZ876-220430-
Waters from Bonita Beach to Englewood FL out 20 to 60 NM-
317 PM EDT Thu Sep 21 2017

.TONIGHT...North winds 5 to 10 knots then becoming northeast around
15 knots late in the evening, then becoming east after midnight.
Seas 2 feet. Isolated thunderstorms.
.FRIDAY...Northeast winds around 10 knots. Seas 2 feet. Isolated
thunderstorms.
.FRIDAY NIGHT...North winds around 15 knots then becoming east in
the late evening and overnight. Seas 2 feet. Scattered showers and
isolated thunderstorms.
.SATURDAY...Northeast winds around 10 knots. Seas 2 feet. Scattered
showers and isolated thunderstorms in the morning, then scattered
thunderstorms in the afternoon.
.SATURDAY NIGHT...Northeast winds 5 to 10 knots then becoming east
around 15 knots in the late evening and overnight. Seas 2 to 3 feet.
Scattered thunderstorms.
.SUNDAY...East winds around 15 knots then becoming northeast 5 to
10 knots in the late morning and afternoon. Seas 2 to 3 feet.
Scattered thunderstorms.
.SUNDAY NIGHT...East winds around 10 knots. Seas 2 feet. Scattered
thunderstorms.
.MONDAY...East winds around 10 knots. Seas 2 feet. Scattered
thunderstorms in the morning, then scattered showers in the
afternoon.
.MONDAY NIGHT...Northeast winds around 5 knots. Seas 2 feet or less.
Scattered showers in the evening, then isolated showers after
midnight.
.TUESDAY...East winds around 5 knots. Seas 2 feet or less. Isolated
thunderstorms.

$$

GMZ853-220430-
Coastal waters from Englewood to Tarpon Springs FL out 20 NM-
317 PM EDT Thu Sep 21 2017

.TONIGHT...North winds 5 to 10 knots then becoming east around
15 knots in the late evening and early morning, then diminishing to
5 to 10 knots toward morning. Seas 2 feet. Bay and inland waters a
moderate chop.
.FRIDAY...Northeast winds around 10 knots then becoming north late
in the afternoon. Seas 2 feet. Bay and inland waters a light chop.
Scattered showers and isolated thunderstorms in the afternoon.
.FRIDAY NIGHT...Northeast winds around 15 knots then becoming east
in the late evening and early morning, then diminishing to 5 to
10 knots toward morning. Seas 2 feet. Bay and inland waters a
moderate chop. Scattered showers and isolated thunderstorms.
.SATURDAY...East winds around 15 knots then becoming northeast 5 to
10 knots in the afternoon. Seas 2 feet. Bay and inland waters a
moderate chop. Scattered showers and isolated thunderstorms in the
morning, then scattered thunderstorms in the afternoon.
.SATURDAY NIGHT...East winds around 15 knots. Seas 2 feet. Bay and
inland waters a moderate chop. Scattered thunderstorms.
.SUNDAY...Northeast winds around 15 knots diminishing to 5 to
10 knots in the late morning and afternoon. Seas 2 feet. Bay and
inland waters a moderate chop. Scattered thunderstorms.
.SUNDAY NIGHT...Northeast winds 5 to 10 knots then becoming east
around 15 knots after midnight, then diminishing to 5 to 10 knots
toward morning. Seas 2 feet. Bay and inland waters a moderate chop.
Scattered thunderstorms in the evening, then isolated thunderstorms
after midnight.
.MONDAY...Northeast winds around 10 knots then becoming around
5 knots late in the afternoon. Seas 2 feet. Bay and inland waters a
light chop. Isolated thunderstorms in the morning. Scattered
showers.
.MONDAY NIGHT...North winds around 5 knots then becoming northeast
after midnight. Seas 2 feet or less. Bay and inland waters smooth.
Scattered showers in the evening. Isolated showers after midnight.
.TUESDAY...East winds around 5 knots then becoming west in the
afternoon. Seas 2 feet or less. Bay and inland waters smooth.
Isolated thunderstorms.

$$

GMZ873-220430-
Waters from Englewood to Tarpon Springs FL out 20 to 60 NM-
317 PM EDT Thu Sep 21 2017

.TONIGHT...North winds 5 to 10 knots then becoming northeast around
15 knots late in the evening, then becoming east after midnight.
Seas 2 feet. Isolated thunderstorms after midnight.
.FRIDAY...Northeast winds around 10 knots. Seas 2 feet. Isolated
thunderstorms.
.FRIDAY NIGHT...North winds around 15 knots then becoming east in
the late evening and overnight. Seas 2 to 3 feet. Scattered showers
and isolated thunderstorms.
.SATURDAY...East winds around 15 knots then becoming northeast 5 to
10 knots in the afternoon. Seas 2 to 3 feet. Scattered showers and
isolated thunderstorms in the morning, then scattered thunderstorms
in the afternoon.
.SATURDAY NIGHT...East winds around 15 knots. Seas 2 to 3 feet.
Scattered thunderstorms.
.SUNDAY...East winds around 15 knots then becoming northeast 5 to
10 knots in the afternoon. Seas 2 to 3 feet. Scattered
thunderstorms.
.SUNDAY NIGHT...Northeast winds 5 to 10 knots then becoming east
around 15 knots after midnight. Seas 2 feet. Scattered
thunderstorms.
.MONDAY...East winds around 10 knots. Seas 2 to 3 feet. Scattered
thunderstorms in the morning, then scattered showers in the
afternoon.
.MONDAY NIGHT...Northeast winds around 5 knots. Seas 2 feet.
Scattered showers.
.TUESDAY...East winds around 5 knots then becoming northeast late in
the afternoon. Seas 2 feet or less. Isolated showers.

$$

GMZ850-220430-
Coastal waters from Tarpon Springs to Suwannee River FL out 20 NM-
317 PM EDT Thu Sep 21 2017

.TONIGHT...North winds 5 to 10 knots then becoming east around
15 knots in the late evening and early morning, then diminishing to
5 to 10 knots toward morning. Seas 2 feet. Bay and inland waters a
moderate chop. Isolated thunderstorms in the evening.
.FRIDAY...Northeast winds around 10 knots. Seas 2 feet. Bay and
inland waters a light chop. Scattered showers and isolated
thunderstorms in the afternoon.
.FRIDAY NIGHT...East winds around 15 knots. Seas 2 feet. Bay and
inland waters a moderate chop. Scattered showers and isolated
thunderstorms.
.SATURDAY...Northeast winds around 15 knots diminishing to 5 to
10 knots early in the afternoon, then increasing to around 15 knots
late in the afternoon. Seas 2 feet. Bay and inland waters a moderate
chop. Scattered showers and isolated thunderstorms in the morning,
then scattered thunderstorms in the afternoon.
.SATURDAY NIGHT...East winds around 15 knots. Seas 2 feet. Bay and
inland waters a moderate chop. Scattered thunderstorms in the
evening, then isolated thunderstorms after midnight.
.SUNDAY...Northeast winds around 15 knots diminishing to 5 to
10 knots in the late morning and afternoon. Seas 2 feet. Bay and
inland waters a moderate chop. Scattered thunderstorms.
.SUNDAY NIGHT...East winds around 10 knots. Seas 2 feet. Bay and
inland waters a light chop. Isolated thunderstorms.
.MONDAY...Northeast winds around 10 knots then becoming northwest
around 5 knots in the afternoon. Seas 2 feet. Bay and inland waters
a light chop. Isolated showers.
.MONDAY NIGHT...Northwest winds around 10 knots then becoming
northeast after midnight. Seas 2 feet or less. Bay and inland waters
a light chop. Isolated showers.
.TUESDAY...Northeast winds around 5 knots then becoming northwest
around 10 knots in the afternoon. Seas 2 feet or less. Bay and
inland waters a light chop. Isolated showers.

$$

GMZ870-220430-
Waters from Tarpon Springs to Suwannee River FL out 20 to 60 NM-
317 PM EDT Thu Sep 21 2017

.TONIGHT...North winds 5 to 10 knots then becoming northeast around
15 knots late in the evening, then becoming east after midnight.
Seas 2 feet.
.FRIDAY...East winds around 15 knots then becoming northeast 5 to
10 knots in the afternoon. Seas 2 feet. Isolated thunderstorms in
the afternoon.
.FRIDAY NIGHT...East winds around 15 knots. Seas 2 to 3 feet.
Scattered showers and isolated thunderstorms.
.SATURDAY...East winds around 15 knots then becoming northeast 5 to
10 knots late in the afternoon. Seas 2 to 3 feet. Scattered showers
and isolated thunderstorms in the morning, then scattered
thunderstorms in the afternoon.
.SATURDAY NIGHT...Northeast winds 10 to 15 knots then becoming east
around 20 knots in the late evening and overnight. Seas 2 to 4 feet.
Scattered thunderstorms.
.SUNDAY...East winds around 15 knots then becoming northeast 5 to
10 knots in the afternoon. Seas 2 to 3 feet. Scattered
thunderstorms.
.SUNDAY NIGHT...Northeast winds 5 to 10 knots then becoming east
around 15 knots after midnight. Seas 2 to 3 feet. Scattered
thunderstorms.
.MONDAY...Northeast winds around 10 knots. Seas 2 to 3 feet.
Scattered thunderstorms in the morning, then scattered showers in
the afternoon.
.MONDAY NIGHT...Northeast winds around 5 knots. Seas 2 feet.
Isolated showers.
.TUESDAY...Northeast winds around 5 knots then becoming north late
in the afternoon. Seas 2 feet or less. Isolated showers.

$$



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