Coastal Waters Forecast
Issued by NWS Tampa Bay Area, FL

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899
FZUS52 KTBW 201854
CWFTBW

Coastal Waters Forecast for Florida
National Weather Service Tampa Bay Area - Ruskin FL
254 PM EDT Fri Apr 20 2018

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.

GMZ800-210430-
SYNOPSIS FOR THE COASTAL WATERS FROM BONITA BEACH TO SUWANNEE RIVER-
254 PM EDT Fri Apr 20 2018

.SYNOPSIS...A weakening cold front will sink south over the waters
today and will stall across the central waters tonight. Area of high
pressure will build over the mid Atlantic coast tightening the
pressure gradient across the coastal waters with increasing easterly
winds tonight and Saturday...with advisory levels winds possible
mainly over the northern and central waters. A cold front will
approach the waters Sunday night and Monday with an increasing chance
of showers and possibly a few thunderstorms.

$$

GMZ830-210430-
Tampa Bay waters-
254 PM EDT Fri Apr 20 2018

.TONIGHT...North winds around 10 knots then becoming northeast
around 15 knots after midnight. Bay and inland waters a moderate
chop.
.SATURDAY...East winds around 15 knots then becoming southeast 5 to
10 knots in the late morning and early afternoon, then becoming
south late in the afternoon. Bay and inland waters a moderate chop.
A slight chance of thunderstorms in the afternoon.
.SATURDAY NIGHT...East winds around 10 knots. Bay and inland waters
a light chop. A chance of showers in the evening. A slight chance of
thunderstorms.
.SUNDAY...Southeast winds around 10 knots then becoming south around
5 knots late in the afternoon. Bay and inland waters a light chop. A
slight chance of thunderstorms. A chance of showers in the
afternoon.
.SUNDAY NIGHT...Southeast winds around 10 knots. Bay and inland
waters a light chop. A chance of showers and a slight chance of
thunderstorms.
.MONDAY...South winds around 10 knots. Bay and inland waters a light
chop. A chance of showers and a slight chance of thunderstorms.
.MONDAY NIGHT...South winds around 10 knots then becoming southeast
after midnight. Bay and inland waters a light chop. A chance of
showers in the evening. A slight chance of thunderstorms.
.TUESDAY...South winds around 10 knots then becoming southwest in
the afternoon. Bay and inland waters a light chop. A slight chance
of thunderstorms.
.TUESDAY NIGHT...West winds around 10 knots. Bay and inland waters a
light chop.
.WEDNESDAY...West winds around 10 knots. Bay and inland waters a
light chop.

$$

GMZ836-210430-
Charlotte Harbor and Pine Island Sound-
254 PM EDT Fri Apr 20 2018

.TONIGHT...Northwest winds around 10 knots then becoming east toward
morning. Bay and inland waters a light chop.
.SATURDAY...East winds around 10 knots then becoming southwest late
in the afternoon. Bay and inland waters a light chop.
.SATURDAY NIGHT...West winds around 5 knots then becoming east in
the late evening and overnight. Bay and inland waters smooth. A
slight chance of thunderstorms after midnight.
.SUNDAY...Southeast winds around 10 knots then becoming south around
5 knots late in the afternoon. Bay and inland waters a light chop. A
slight chance of thunderstorms. A chance of showers in the
afternoon.
.SUNDAY NIGHT...Southeast winds around 5 knots then becoming around
10 knots in the late evening and overnight. Bay and inland waters a
light chop. A chance of showers and a slight chance of
thunderstorms.
.MONDAY...South winds around 10 knots. Bay and inland waters a light
chop. A chance of showers and a slight chance of thunderstorms.
.MONDAY NIGHT...Southeast winds around 10 knots. Bay and inland
waters a light chop. A chance of showers and a slight chance of
thunderstorms.
.TUESDAY...South winds around 10 knots then becoming southwest in
the afternoon. Bay and inland waters a light chop. A slight chance
of thunderstorms.
.TUESDAY NIGHT...West winds around 10 knots. Bay and inland waters a
light chop.
.WEDNESDAY...West winds around 10 knots. Bay and inland waters a
light chop.

$$

GMZ856-210430-
Coastal waters from Bonita Beach to Englewood FL out 20 NM-
254 PM EDT Fri Apr 20 2018

.TONIGHT...North winds around 10 knots then becoming northeast
toward morning. Seas 2 feet. Bay and inland waters a light chop.
.SATURDAY...East winds around 10 knots then becoming southwest late
in the afternoon. Seas 2 feet. Bay and inland waters a light chop.
.SATURDAY NIGHT...Northwest winds around 10 knots then becoming east
after midnight. Seas 2 feet. Bay and inland waters a light chop.
.SUNDAY...Southeast winds around 10 knots then becoming south around
5 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
in the afternoon.
.SUNDAY NIGHT...South winds around 5 knots then becoming southeast
around 10 knots in the late evening and overnight. Seas 2 feet. Bay
and inland waters a light chop. A chance of showers and a slight
chance of thunderstorms.
.MONDAY...South winds around 10 knots. Seas 2 feet. Bay and inland
waters a light chop. A chance of showers and a slight chance of
thunderstorms.
.MONDAY NIGHT...Southeast winds around 10 knots. Seas 2 feet. Bay
and inland waters a light chop. A chance of showers and a slight
chance of thunderstorms.
.TUESDAY...Southwest winds around 10 knots. Seas 2 feet. Bay and
inland waters a light chop. A slight chance of thunderstorms.
.TUESDAY NIGHT...West winds around 10 knots. Seas 2 to 3 feet. Bay
and inland waters a light chop.
.WEDNESDAY...West winds 5 to 10 knots increasing to around 15 knots
late in the afternoon. Seas 2 to 3 feet. Bay and inland waters a
moderate chop.

$$

GMZ876-210430-
Waters from Bonita Beach to Englewood FL out 20 to 60 NM-
254 PM EDT Fri Apr 20 2018

.TONIGHT...North winds around 10 knots then becoming northeast 10 to
15 knots toward morning. Seas 2 to 3 feet.
.SATURDAY...Southeast winds around 10 knots then becoming south
late in the afternoon. Seas 2 to 3 feet.
.SATURDAY NIGHT...West winds around 5 knots then becoming northeast
around 10 knots late in the evening, then becoming east after
midnight. Seas 2 to 3 feet.
.SUNDAY...Southeast winds around 10 knots. Seas 2 to 3 feet. A
slight chance of thunderstorms in the afternoon.
.SUNDAY NIGHT...Southeast winds around 10 knots. Seas 2 feet. A
chance of showers in the evening. A slight chance of thunderstorms.
.MONDAY...Southeast winds around 15 knots then becoming south 5 to
10 knots late in the afternoon. Seas 2 feet. A chance of showers and
a slight chance of thunderstorms.
.MONDAY NIGHT...Southeast winds around 15 knots. Seas 2 feet. A
chance of showers in the evening. A slight chance of thunderstorms.
.TUESDAY...Southwest winds around 15 knots. Seas 2 to 3 feet. A
slight chance of thunderstorms in the morning.
.TUESDAY NIGHT...West winds around 10 knots. Seas 2 to 4 feet.
.WEDNESDAY...West winds around 15 knots. Seas 2 to 4 feet.

$$

GMZ853-210430-
Coastal waters from Englewood to Tarpon Springs FL out 20 NM-
254 PM EDT Fri Apr 20 2018

.TONIGHT...Northwest winds around 10 knots then becoming northeast
around 15 knots in the late evening and overnight. Seas 2 to 3 feet.
Bay and inland waters a moderate chop.
.SATURDAY...East winds around 15 knots diminishing to around 10
knots, then becoming southeast early in the afternoon then becoming
southwest late in the afternoon. Seas 2 to 3 feet. Bay and inland
waters a moderate chop.
.SATURDAY NIGHT...North winds around 10 knots then becoming east in
the late evening and overnight. Seas 2 to 3 feet. Bay and inland
waters a light chop.
.SUNDAY...Southeast winds around 10 knots then becoming south around
5 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 in the afternoon.
.SUNDAY NIGHT...South winds around 5 knots then becoming east 5 to
10 knots late in the evening, then becoming southeast around
15 knots after midnight. Seas 2 feet. Bay and inland waters a
moderate chop. A chance of showers and a slight chance of
thunderstorms.
.MONDAY...South winds around 15 knots. Seas 2 feet. Bay and inland
waters a moderate chop. A chance of showers and a slight chance of
thunderstorms.
.MONDAY NIGHT...Southeast winds around 15 knots. Seas 2 feet. Bay
and inland waters a moderate chop. A chance of showers in the
evening. A slight chance of thunderstorms.
.TUESDAY...South winds around 15 knots then becoming southwest in
the afternoon. Seas 2 to 3 feet. Bay and inland waters a moderate
chop. A slight chance of thunderstorms in the morning.
.TUESDAY NIGHT...West winds around 10 knots. Seas 2 to 3 feet. Bay
and inland waters a light chop.
.WEDNESDAY...West winds around 10 knots. Seas 2 to 4 feet. Bay and
inland waters a light chop.

$$

GMZ873-210430-
Waters from Englewood to Tarpon Springs FL out 20 to 60 NM-
254 PM EDT Fri Apr 20 2018

...Small Craft Exercise Caution Tonight...

.TONIGHT...North winds 10 to 15 knots, then becoming northeast
15 to 20 knots in the late evening and overnight. Seas 2 to 4 feet.
.SATURDAY...East winds 15 to 20 knots then becoming southeast around
10 knots early in the afternoon, then becoming south late in the
afternoon. Seas 2 to 4 feet.
.SATURDAY NIGHT...North winds around 10 knots then becoming east
around 15 knots in the late evening and overnight. Seas 2 to 4 feet.
.SUNDAY...Southeast winds around 15 knots diminishing to 5 to
10 knots early in the afternoon, then becoming south late in the
afternoon. Seas 2 to 4 feet. A slight chance of thunderstorms in the
afternoon.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots increasing to around
15 knots after midnight. Seas 2 to 3 feet. A chance of showers and a
slight chance of thunderstorms.
.MONDAY...South winds around 15 knots. Seas 2 feet. A chance of
showers and a slight chance of thunderstorms.
.MONDAY NIGHT...Southeast winds around 15 knots. Seas 2 feet. A
chance of showers in the evening. A slight chance of thunderstorms.
.TUESDAY...Southwest winds around 15 knots. Seas 2 to 3 feet. A
slight chance of thunderstorms in the morning.
.TUESDAY NIGHT...West winds around 10 knots. Seas 2 to 4 feet.
.WEDNESDAY...West winds around 10 knots. Seas 2 to 4 feet.

$$

GMZ850-210430-
Coastal waters from Tarpon Springs to Suwannee River FL out 20 NM-
254 PM EDT Fri Apr 20 2018

...Small Craft Exercise Caution Tonight...

.TONIGHT...Northeast winds 10 to 15 knots increasing to 15 to 20
knots in the late evening and overnight. Seas 2 to 3 feet. Bay and
inland waters choppy.
.SATURDAY...East winds around 15 knots then becoming northeast
around 10 knots in the afternoon. Seas 2 to 3 feet. Bay and inland
waters a moderate chop. A chance of showers and a slight chance of
thunderstorms in the afternoon.
.SATURDAY NIGHT...East winds around 15 knots. Seas 2 to 3 feet. Bay
and inland waters a moderate chop. A chance of showers in the
evening. A slight chance of thunderstorms.
.SUNDAY...East winds around 15 knots diminishing to 5 to 10 knots in
the afternoon. Seas 2 to 3 feet. Bay and inland waters a moderate
chop. A slight chance of thunderstorms. A chance of showers in the
afternoon.
.SUNDAY NIGHT...East winds 5 to 10 knots then becoming southeast
around 15 knots after midnight. Seas 2 to 3 feet. Bay and inland
waters a moderate chop. A chance of showers and a slight chance of
thunderstorms.
.MONDAY...South winds around 15 knots. Seas 2 to 3 feet. Bay and
inland waters a moderate chop. A chance of showers in the morning. A
slight chance of thunderstorms. Showers likely in the afternoon.
.MONDAY NIGHT...South winds 5 to 10 knots then becoming southeast
around 15 knots in the late evening and overnight. Seas 2 feet. Bay
and inland waters a moderate chop. A chance of showers in the
evening. A slight chance of thunderstorms.
.TUESDAY...Southeast winds around 15 knots then becoming south in
the afternoon. Seas 2 to 3 feet. Bay and inland waters a moderate
chop. A slight chance of thunderstorms in the morning.
.TUESDAY NIGHT...West winds around 15 knots diminishing to 5 to
10 knots after midnight. Seas 2 to 3 feet. Bay and inland waters a
moderate chop.
.WEDNESDAY...West winds around 10 knots. Seas 2 to 3 feet. Bay and
inland waters a light chop.

$$

GMZ870-210430-
Waters from Tarpon Springs to Suwannee River FL out 20 to 60 NM-
254 PM EDT Fri Apr 20 2018

...Small Craft Exercise Caution Tonight...

.TONIGHT...Northeast winds 10 to 15 knots increasing to 15 to 20
knots in the late evening and overnight. Seas 2 to 4 feet.
.SATURDAY...East winds 15 to 20 knots then becoming northeast 10 to
15 knots. Seas 2 to 4 feet.
.SATURDAY NIGHT...East winds around 15 knots. Seas 3 to 5 feet. A
slight chance of thunderstorms.
.SUNDAY...Southeast winds around 15 knots diminishing to around 10
knots late in the afternoon. Seas 3 to 5 feet. A chance of showers
and a slight chance of thunderstorms in the afternoon.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots increasing to around
15 knots in the late evening and overnight. Seas 2 to 3 feet. A
chance of showers and a slight chance of thunderstorms.
.MONDAY...South winds around 15 knots. Seas 2 to 3 feet. Showers
likely and a slight chance of thunderstorms.
.MONDAY NIGHT...South winds around 15 knots then becoming east after
midnight. Seas 2 feet. A chance of showers and a slight chance of
thunderstorms in the evening.
.TUESDAY...Southeast winds around 15 knots then becoming south in
the afternoon. Seas 2 to 3 feet.
.TUESDAY NIGHT...West winds around 15 knots. Seas 2 to 4 feet.
.WEDNESDAY...Northwest winds around 10 knots. Seas 2 to 4 feet.

$$



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