779
FZUS52 KTBW 212331
CWFTBW

Coastal Waters Forecast for Florida
National Weather Service Tampa Bay Ruskin FL
731 PM EDT Thu Aug 21 2025

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.

GMZ800-221215-
Synopsis for the coastal waters from Bonita Beach to Suwannee River-
731 PM EDT Thu Aug 21 2025

.SYNOPSIS...
Showers and thunderstorms will remain possible at anytime through
the forecast period as WSW flow dominates. The most likely
period, however, will be after midnight through mid-morning. While
storms may produce locally hazardous winds and seas, winds
outside of storms should remain around 15 knots or less with seas
of two feet or less.

&&

$$

GMZ830-221215-
Tampa Bay waters-
731 PM EDT Thu Aug 21 2025

.TONIGHT...Southwest winds 5 to 10 knots. Bay and inland waters
light chop. A chance of showers and thunderstorms early this
evening, then a slight chance of showers and thunderstorms late
this evening. A chance of showers and thunderstorms after
midnight.
.FRIDAY...Southwest winds 5 to 10 knots, increasing to 10 to
15 knots in the afternoon. Bay and inland waters a moderate chop.
Showers likely. A chance of thunderstorms in the morning, then
thunderstorms likely in the afternoon.
.FRIDAY NIGHT...Southwest winds 5 to 10 knots. Bay and inland
waters light chop. A chance of showers and thunderstorms.
.SATURDAY...Southwest winds 5 to 10 knots, becoming west 10 to
15 knots in the afternoon. Bay and inland waters a moderate chop.
Showers likely. A chance of thunderstorms in the morning, then
thunderstorms likely in the afternoon.
.SATURDAY NIGHT...West winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. Bay and inland waters a moderate chop.
Showers and thunderstorms likely in the evening, then a chance of
showers with a slight chance of thunderstorms after midnight.
.SUNDAY...West winds 5 to 10 knots, increasing to 10 to 15 knots
in the afternoon. Bay and inland waters a moderate chop. Showers
likely. A chance of thunderstorms in the morning, then
thunderstorms likely in the afternoon.
.SUNDAY NIGHT...West winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. Bay and inland waters a moderate chop.
Showers and thunderstorms likely, mainly in the evening.
.MONDAY...West winds 5 to 10 knots, increasing to 10 to 15 knots
in the afternoon. Bay and inland waters a moderate chop. A chance
of showers and thunderstorms in the morning, then showers and
thunderstorms likely in the afternoon.
.MONDAY NIGHT...West winds 5 to 10 knots. Bay and inland waters
light chop. Showers and thunderstorms likely, mainly in the
evening.
.TUESDAY...West winds 5 to 10 knots. Bay and inland waters light
chop. A chance of showers and thunderstorms.

Winds and waves higher in and near thunderstorms.

$$

GMZ836-221215-
Charlotte Harbor and Pine Island Sound-
731 PM EDT Thu Aug 21 2025

.TONIGHT...Southwest winds 5 to 10 knots. Bay and inland waters
light chop. A chance of showers and thunderstorms early this
evening, then a slight chance of showers and thunderstorms late
this evening and early morning. A chance of showers and
thunderstorms late.
.FRIDAY...Southwest winds 5 to 10 knots. Bay and inland waters
light chop. A chance of showers and thunderstorms.
.FRIDAY NIGHT...Southwest winds 5 to 10 knots. Bay and inland
waters light chop. A chance of showers and thunderstorms, mainly
in the evening.
.SATURDAY...Southwest winds 5 to 10 knots, becoming west 10 to
15 knots in the afternoon. Bay and inland waters a moderate chop.
A chance of showers. A slight chance of thunderstorms in the
morning, then a chance of thunderstorms in the afternoon.
.SATURDAY NIGHT...West winds 5 to 10 knots. Bay and inland waters
light chop. A chance of showers. A chance of thunderstorms,
mainly in the evening.
.SUNDAY...Southwest winds 5 to 10 knots, becoming west 10 to
15 knots with gusts up to 20 knots in the afternoon. Bay and
inland waters a moderate chop. A chance of showers. A slight
chance of thunderstorms in the morning, then a chance of
thunderstorms in the afternoon.
.SUNDAY NIGHT...West winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. Bay and inland waters a moderate chop. A
slight chance of showers and thunderstorms in the evening, then a
chance of showers and thunderstorms after midnight.
.MONDAY...West winds 5 to 10 knots, increasing to 10 to 15 knots
in the afternoon. Bay and inland waters a moderate chop. A chance
of showers and thunderstorms.
.MONDAY NIGHT...West winds 5 to 10 knots. Bay and inland waters
light chop. A chance of showers and thunderstorms, mainly in the
evening.
.TUESDAY...West winds 5 to 10 knots. Bay and inland waters light
chop. A slight chance of showers and thunderstorms in the
morning, then a chance of showers and thunderstorms in the
afternoon.

Winds and waves higher in and near thunderstorms.

$$

GMZ856-221215-
Coastal waters from Bonita Beach to Englewood FL out 20 NM-
731 PM EDT Thu Aug 21 2025

.TONIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: West 1 foot at 3 seconds. Bay and inland waters
light chop. A chance of showers and thunderstorms early this
evening, then a slight chance of showers and thunderstorms late
this evening and early morning. A chance of showers and
thunderstorms late.
.FRIDAY...Southwest winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: Southwest 1 foot at 3 seconds. Bay and inland waters
light chop. A chance of showers and thunderstorms.
.FRIDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less. Wave Detail: West 1 foot at 4 seconds. Bay and inland
waters light chop. A slight chance of showers and thunderstorms
in the evening, then a chance of showers and thunderstorms after
midnight.
.SATURDAY...Southwest winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: West 1 foot at 4 seconds. Bay and inland waters
light chop. A chance of showers and thunderstorms.
.SATURDAY NIGHT...West winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: West 1 foot at 3 seconds. Bay and inland waters
light chop. A chance of showers and thunderstorms.
.SUNDAY...Southwest winds 5 to 10 knots, becoming west 10 to
15 knots in the afternoon. Seas 1 foot or less, then around
2 feet in the afternoon. Wave Detail: West 1 foot at 4 seconds,
becoming southwest 1 foot at 4 seconds. Bay and inland waters a
moderate chop. A chance of showers and thunderstorms.
.SUNDAY NIGHT...West winds 10 to 15 knots. Seas around 2 feet.
Bay and inland waters a moderate chop. A chance of showers and
thunderstorms.
.MONDAY...West winds 5 to 10 knots. Seas 1 foot or less. Bay and
inland waters light chop. A chance of showers and thunderstorms.
.MONDAY NIGHT...West winds 5 to 10 knots. Seas 1 foot or less.
Bay and inland waters light chop. A chance of showers and
thunderstorms, mainly in the evening.
.TUESDAY...West winds 5 to 10 knots. Seas 1 foot or less. Bay and
inland waters light chop. A chance of showers and thunderstorms.

Winds and seas higher in and near thunderstorms.

$$

GMZ876-221215-
Waters from Bonita Beach to Englewood FL out 20 to 60 NM-
731 PM EDT Thu Aug 21 2025

.TONIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: West 1 foot at 3 seconds. A chance of showers and
thunderstorms early this evening, then a slight chance of showers
and thunderstorms late this evening and early morning. A chance
of showers and thunderstorms late.
.FRIDAY...Southwest winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: Southwest 1 foot at 3 seconds. A chance of showers
and thunderstorms.
.FRIDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less. Wave Detail: West 1 foot at 4 seconds. A chance of showers
and thunderstorms.
.SATURDAY...Southwest winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: West 1 foot at 4 seconds. Showers likely with a
chance of thunderstorms.
.SATURDAY NIGHT...West winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: West 1 foot at 4 seconds. A chance of showers and
thunderstorms.
.SUNDAY...Southwest winds 5 to 10 knots. Seas 1 foot or less,
then around 2 feet in the afternoon. Wave Detail: West 1 foot at
3 seconds and southwest 1 foot at 6 seconds. Showers likely with
a chance of thunderstorms.
.SUNDAY NIGHT...West winds 5 to 10 knots. Seas around 2 feet. A
chance of showers and thunderstorms.
.MONDAY...West winds 5 to 10 knots. Seas around 2 feet in the
morning, then 1 foot or less. A chance of showers and
thunderstorms.
.MONDAY NIGHT...West winds 5 to 10 knots. Seas 1 foot or less. A
chance of showers and thunderstorms.
.TUESDAY...West winds around 5 knots. Seas 1 foot or less. A
chance of showers and thunderstorms.

Winds and seas higher in and near thunderstorms.

$$

GMZ853-221215-
Coastal waters from Englewood to Tarpon Springs FL out 20 NM-
731 PM EDT Thu Aug 21 2025

.TONIGHT...Southwest winds around 10 knots. Seas 1 foot or less.
Wave Detail: Southwest 1 foot at 3 seconds. Bay and inland waters
light chop. A chance of showers and thunderstorms.
.FRIDAY...Southwest winds around 10 knots. Seas 1 foot or less.
Wave Detail: Southwest 1 foot at 3 seconds. Bay and inland waters
light chop. Showers likely with a chance of thunderstorms.
.FRIDAY NIGHT...Southwest winds around 10 knots. Seas 1 foot or
less. Wave Detail: Southwest 1 foot at 4 seconds. Bay and inland
waters light chop. A chance of showers and thunderstorms.
.SATURDAY...West winds 10 to 15 knots. Seas 1 foot or less, then
around 2 feet in the afternoon. Wave Detail: Southwest 1 foot at
4 seconds, becoming west 2 feet at 4 seconds. Bay and inland
waters a moderate chop. Showers likely. A chance of thunderstorms
in the morning, then thunderstorms likely in the afternoon.
.SATURDAY NIGHT...West winds around 10 knots. Seas around 2 feet.
Wave Detail: West 2 feet at 4 seconds. Bay and inland waters
light chop. Showers and thunderstorms likely, mainly in the
evening.
.SUNDAY...West winds 10 to 15 knots. Seas around 2 feet. Wave
Detail: West 2 feet at 4 seconds. Bay and inland waters a
moderate chop. Showers likely. A chance of thunderstorms in the
morning, then thunderstorms likely in the afternoon.
.SUNDAY NIGHT...West winds 10 to 15 knots. Seas around 2 feet.
Bay and inland waters a moderate chop. Showers and thunderstorms
likely, mainly in the evening.
.MONDAY...West winds around 10 knots. Seas around 2 feet. Bay and
inland waters light chop. Showers likely with a chance of
thunderstorms.
.MONDAY NIGHT...West winds 5 to 10 knots. Seas around 2 feet in
the evening, then 1 foot or less. Bay and inland waters light
chop. A chance of showers and thunderstorms, mainly in the
evening.
.TUESDAY...West winds 5 to 10 knots. Seas 1 foot or less. Bay and
inland waters light chop. A chance of showers and thunderstorms.

Winds and seas higher in and near thunderstorms.

$$

GMZ873-221215-
Waters from Englewood to Tarpon Springs FL out 20 to 60 NM-
731 PM EDT Thu Aug 21 2025

.TONIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: Southwest 1 foot at 3 seconds. A chance of showers
and thunderstorms.
.FRIDAY...Southwest winds around 10 knots. Seas 1 foot or less.
Wave Detail: Southwest 1 foot at 4 seconds. A chance of
thunderstorms. Showers likely, mainly in the morning.
.FRIDAY NIGHT...Southwest winds around 10 knots. Seas 1 foot or
less. Wave Detail: Southwest 1 foot at 4 seconds. A chance of
thunderstorms. A chance of showers in the evening, then showers
likely after midnight.
.SATURDAY...West winds around 10 knots. Seas 1 foot or less. Wave
Detail: Southwest 1 foot at 4 seconds. Showers. A chance of
thunderstorms in the morning, then thunderstorms likely in the
afternoon.
.SATURDAY NIGHT...West winds around 10 knots. Seas around 2 feet
in the evening, then 1 foot or less. Wave Detail: West 1 foot at
4 seconds. Showers likely. Thunderstorms likely, mainly in the
evening.
.SUNDAY...West winds 10 to 15 knots. Seas 1 foot or less, then
around 2 feet in the afternoon. Wave Detail: West 1 foot at
4 seconds, becoming west 2 feet at 4 seconds. Showers. A chance
of thunderstorms in the morning, then thunderstorms likely in the
afternoon.
.SUNDAY NIGHT...West winds 10 to 15 knots. Seas around 2 feet.
Showers likely. Thunderstorms likely, mainly in the evening.
.MONDAY...West winds around 10 knots. Seas around 2 feet. Showers
and thunderstorms likely.
.MONDAY NIGHT...West winds 5 to 10 knots. Seas around 2 feet in
the evening, then 1 foot or less. A chance of showers and
thunderstorms.
.TUESDAY...Northwest winds around 5 knots. Seas 1 foot or less. A
chance of showers and thunderstorms.

Winds and seas higher in and near thunderstorms.

$$

GMZ850-221215-
Coastal waters from Tarpon Springs to Suwannee River FL out 20 NM-
731 PM EDT Thu Aug 21 2025

.TONIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: Southwest 1 foot at 2 seconds. Bay and inland waters
light chop. A chance of showers and thunderstorms early this
evening, then a slight chance of showers and thunderstorms late
this evening. A chance of showers and thunderstorms after
midnight.
.FRIDAY...Southwest winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: Southwest 1 foot at 3 seconds. Bay and inland waters
light chop. Showers and thunderstorms likely.
.FRIDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less. Wave Detail: Southwest 1 foot at 3 seconds. Bay and inland
waters light chop. A chance of thunderstorms. A chance of showers
in the evening, then showers likely after midnight.
.SATURDAY...West winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: Southwest 1 foot at 4 seconds. Bay and inland waters
light chop. Showers with thunderstorms likely.
.SATURDAY NIGHT...West winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: Southwest 1 foot at 4 seconds. Bay and inland waters
light chop. Showers likely. Thunderstorms likely, mainly in the
evening.
.SUNDAY...West winds 5 to 10 knots. Seas 1 foot or less, then
around 2 feet in the afternoon. Wave Detail: West 1 foot at
4 seconds. Bay and inland waters light chop. Showers. A chance of
thunderstorms in the morning, then thunderstorms likely in the
afternoon.
.SUNDAY NIGHT...West winds 5 to 10 knots. Seas around 2 feet. Bay
and inland waters light chop. Showers and thunderstorms likely,
mainly in the evening.
.MONDAY...West winds 5 to 10 knots. Seas 1 foot or less. Bay and
inland waters light chop. Showers likely with a chance of
thunderstorms.
.MONDAY NIGHT...West winds 5 to 10 knots. Seas 1 foot or less.
Bay and inland waters light chop. A chance of showers and
thunderstorms, mainly in the evening.
.TUESDAY...Northwest winds around 5 knots. Seas 1 foot or less.
Bay and inland waters smooth. A chance of showers and
thunderstorms.

Winds and seas higher in and near thunderstorms.

$$

GMZ870-221215-
Waters from Tarpon Springs to Suwannee River FL out 20 to 60 NM-
731 PM EDT Thu Aug 21 2025

.TONIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: Southwest 1 foot at 2 seconds. A chance of showers
and thunderstorms this evening, then showers and thunderstorms
likely after midnight.
.FRIDAY...Southwest winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: Southwest 1 foot at 3 seconds. Showers and
thunderstorms likely.
.FRIDAY NIGHT...Southwest winds around 10 knots. Seas 1 foot or
less. Wave Detail: Southwest 1 foot at 4 seconds. Showers likely
with a chance of thunderstorms.
.SATURDAY...West winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: Southwest 1 foot at 4 seconds. Showers with thunderstorms
likely.
.SATURDAY NIGHT...West winds around 10 knots. Seas 1 foot or
less. Wave Detail: Southwest 1 foot at 4 seconds. Showers likely.
Thunderstorms likely, mainly in the evening.
.SUNDAY...West winds around 10 knots. Seas 1 foot or less, then
around 2 feet in the afternoon. Wave Detail: West 1 foot at
4 seconds. Showers with a chance of thunderstorms.
.SUNDAY NIGHT...West winds around 10 knots. Seas around 2 feet.
Showers likely. Thunderstorms likely, mainly in the evening.
.MONDAY...West winds 5 to 10 knots. Seas around 2 feet. Showers
likely with a chance of thunderstorms.
.MONDAY NIGHT...West winds 5 to 10 knots. Seas around 2 feet. A
chance of showers and thunderstorms.
.TUESDAY...Northwest winds 5 to 10 knots. Seas 1 foot or less. A
chance of showers and thunderstorms.

Winds and seas higher in and near thunderstorms.

$$