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Chassahowitzka, FL - Chassahowitzka River Coastal Forecast

FZUS52 KTBW 161945
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Coastal Waters Forecast for Florida
National Weather Service Tampa Bay Ruskin FL
245 PM EST Tue Dec 16 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.

GMZ800-170400-
Synopsis for the coastal waters from Bonita Beach to Suwannee River-
245 PM EST Tue Dec 16 2025

.SYNOPSIS...
High pressure over the region will weaken through midweek with
winds and seas subsiding. A cold front will move through the
eastern gulf waters preceded by showers and a few thunderstorms
Thursday afternoon into Friday. Another high pressure area will
build into the region with gusty northerly winds and seas into
Saturday.

&&

$$

GMZ830-170400-
Tampa Bay waters-
245 PM EST Tue Dec 16 2025

.TONIGHT...Northeast winds 10 to 15 knots, becoming east 5 to
10 knots overnight. Bay and inland waters a moderate chop.
.WEDNESDAY...East winds 5 to 10 knots. Bay and inland waters
light chop.
.WEDNESDAY NIGHT...East winds around 10 knots. Bay and inland
waters light chop.
.THURSDAY...Southeast winds 5 to 10 knots, becoming south in the
afternoon. Bay and inland waters light chop. A chance of showers
in the afternoon.
.THURSDAY NIGHT...South winds 5 to 10 knots, becoming southwest
overnight. Bay and inland waters light chop. A chance of showers
with a slight chance of thunderstorms.
.FRIDAY...West winds 5 to 10 knots, becoming northwest 10 to
15 knots in the afternoon. Bay and inland waters light chop.
.FRIDAY NIGHT...North winds 10 to 15 knots, becoming northeast
overnight. Bay and inland waters a moderate chop.
.SATURDAY...Northeast winds 5 to 10 knots. Bay and inland waters
light chop.
.SATURDAY NIGHT...Northeast winds 5 to 10 knots, becoming east
overnight. Bay and inland waters light chop.
.SUNDAY...East winds 5 to 10 knots, becoming north in the
afternoon. Bay and inland waters smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ836-170400-
Charlotte Harbor and Pine Island Sound-
245 PM EST Tue Dec 16 2025

.TONIGHT...Northeast winds 10 to 15 knots, becoming east around
10 knots overnight. Bay and inland waters a moderate chop.
.WEDNESDAY...East winds 5 to 10 knots. Bay and inland waters
light chop.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Bay and inland
waters light chop.
.THURSDAY...East winds 5 to 10 knots, becoming south in the
afternoon. Bay and inland waters light chop. A slight chance of
showers in the afternoon.
.THURSDAY NIGHT...South winds 5 to 10 knots. Bay and inland
waters smooth. A chance of showers with a slight chance of
thunderstorms.
.FRIDAY...West winds 5 to 10 knots, becoming northwest around
10 knots in the afternoon. Bay and inland waters light chop.
.FRIDAY NIGHT...North winds around 10 knots. Bay and inland
waters light chop.
.SATURDAY...Northeast winds 5 to 10 knots. Bay and inland waters
light chop.
.SATURDAY NIGHT...North winds 5 to 10 knots, becoming east
overnight. Bay and inland waters smooth.
.SUNDAY...East winds 5 to 10 knots, becoming north in the
afternoon. Bay and inland waters smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ856-170400-
Coastal waters from Bonita Beach to Englewood FL out 20 NM-
245 PM EST Tue Dec 16 2025

.TONIGHT...Northeast winds 10 to 15 knots, becoming east in the
late evening and overnight. Seas around 2 feet. Wave Detail:
Northeast 2 feet at 4 seconds. Bay and inland waters a moderate
chop.
.WEDNESDAY...East winds around 10 knots, diminishing to 5 to
10 knots in the afternoon. Seas around 2 feet in the morning,
then 1 foot or less. Wave Detail: East 1 foot at 4 seconds. Bay
and inland waters light chop.
.WEDNESDAY NIGHT...East winds around 10 knots. Seas 1 foot or
less. Wave Detail: East 1 foot at 4 seconds. Bay and inland waters
light chop.
.THURSDAY...Southeast winds around 10 knots. Seas 1 foot or less.
Wave Detail: Southeast 1 foot at 4 seconds. Bay and inland waters
light chop. A chance of showers in the afternoon.
.THURSDAY NIGHT...South winds 5 to 10 knots, becoming southwest
overnight. Seas 1 foot or less. Wave Detail: South 1 foot at
4 seconds. Bay and inland waters smooth. A chance of showers with
a slight chance of thunderstorms.
.FRIDAY...West winds 5 to 10 knots, becoming north around 10 knots
in the afternoon. Seas 1 foot or less, then around 2 feet in the
afternoon. Wave Detail: South 1 foot at 4 seconds, becoming
southwest 1 foot at 5 seconds. Bay and inland waters light chop.
.FRIDAY NIGHT...North winds 10 to 15 knots, becoming northeast
overnight. Seas around 2 feet. Bay and inland waters a moderate
chop.
.SATURDAY...Northeast winds 10 to 15 knots, becoming north 5 to
10 knots in the afternoon. Seas around 2 feet. Bay and inland
waters a moderate chop.
.SATURDAY NIGHT...Northeast winds 5 to 10 knots. Seas around
2 feet. Bay and inland waters light chop.
.SUNDAY...East winds 5 to 10 knots, becoming north in the
afternoon. Seas around 2 feet in the morning, then 1 foot or less.
Bay and inland waters light chop.

Winds and seas higher in and near thunderstorms.

$$

GMZ876-170400-
Waters from Bonita Beach to Englewood FL out 20 to 60 NM-
245 PM EST Tue Dec 16 2025

.TONIGHT...Northeast winds 10 to 15 knots, becoming east around
15 knots late this evening and overnight. Seas 2 to 3 feet. Wave
Detail: Northeast 3 feet at 5 seconds.
.WEDNESDAY...East winds 10 to 15 knots with gusts up to 20 knots,
diminishing to 5 to 10 knots in the afternoon. Seas 2 to 3 feet.
Wave Detail: Northeast 3 feet at 4 seconds.
.WEDNESDAY NIGHT...East winds 5 to 10 knots, increasing to 10 to
15 knots overnight. Seas around 2 feet. Wave Detail: Southeast
2 feet at 4 seconds.
.THURSDAY...Southeast winds 10 to 15 knots, diminishing to around
10 knots in the afternoon. Seas around 2 feet. Wave Detail:
Southeast 2 feet at 4 seconds. A slight chance of showers in the
morning, then a chance of showers in the afternoon.
.THURSDAY NIGHT...South winds 5 to 10 knots, becoming southwest
overnight. Seas around 2 feet. Wave Detail: Southeast 2 feet at
5 seconds. A chance of showers with a slight chance of
thunderstorms.
.FRIDAY...West winds 5 to 10 knots, becoming north around 10 knots
in the afternoon. Seas 1 foot or less, then around 2 feet in the
afternoon. Wave Detail: Southwest 1 foot at 5 seconds, becoming
west 2 feet at 5 seconds and south 1 foot at 4 seconds.
.FRIDAY NIGHT...North winds 10 to 15 knots, becoming northeast
overnight. Seas 2 to 3 feet.
.SATURDAY...Northeast winds 10 to 15 knots, diminishing to 5 to
10 knots in the afternoon. Seas 2 to 3 feet.
.SATURDAY NIGHT...Northeast winds 5 to 10 knots. Seas 2 to
3 feet.
.SUNDAY...East winds 5 to 10 knots. Seas around 2 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ853-170400-
Coastal waters from Englewood to Tarpon Springs FL out 20 NM-
245 PM EST Tue Dec 16 2025

.TONIGHT...Northeast winds 10 to 15 knots, becoming east in the
late evening and overnight. Seas around 2 feet. Wave Detail:
Northeast 2 feet at 4 seconds. Bay and inland waters a moderate
chop.
.WEDNESDAY...East winds around 10 knots, becoming northeast 5 to
10 knots in the afternoon. Seas around 2 feet in the morning, then
1 foot or less. Wave Detail: East 1 foot at 4 seconds. Bay and
inland waters light chop.
.WEDNESDAY NIGHT...Northeast winds around 10 knots, becoming east
overnight. Seas 1 foot or less. Wave Detail: East 1 foot at
3 seconds. Bay and inland waters light chop.
.THURSDAY...Southeast winds around 10 knots. Seas 1 foot or less.
Wave Detail: Southeast 1 foot at 4 seconds. Bay and inland waters
light chop. A slight chance of showers in the morning, then a
chance of showers in the afternoon.
.THURSDAY NIGHT...South winds around 10 knots, becoming southwest
overnight. Seas 1 foot or less. Wave Detail: South 1 foot at
4 seconds. Bay and inland waters light chop. A chance of showers
with a slight chance of thunderstorms.
.FRIDAY...West winds around 10 knots, becoming northwest 10 to
15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail:
Southwest 2 feet at 5 seconds. Bay and inland waters a moderate
chop.
.FRIDAY NIGHT...North winds 10 to 15 knots, becoming northeast
overnight. Seas 2 to 3 feet. Bay and inland waters a moderate
chop.
.SATURDAY...Northeast winds 10 to 15 knots, becoming north 5 to
10 knots in the afternoon. Seas 2 to 3 feet. Bay and inland waters
a moderate chop.
.SATURDAY NIGHT...North winds 5 to 10 knots, becoming east after
midnight. Seas around 2 feet. Bay and inland waters light chop.
.SUNDAY...East winds 5 to 10 knots, becoming north in the
afternoon. Seas 1 foot or less. Bay and inland waters light chop.

Winds and seas higher in and near thunderstorms.

$$

GMZ873-170400-
Waters from Englewood to Tarpon Springs FL out 20 to 60 NM-
245 PM EST Tue Dec 16 2025

.TONIGHT...Northeast winds 10 to 15 knots with gusts up to
20 knots, becoming east overnight. Seas 2 to 3 feet. Wave Detail:
Northeast 2 feet at 4 seconds.
.WEDNESDAY...East winds 10 to 15 knots, diminishing to 5 to
10 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: East
2 feet at 4 seconds.
.WEDNESDAY NIGHT...East winds 5 to 10 knots, increasing to 10 to
15 knots overnight. Seas around 2 feet. Wave Detail: Southeast
2 feet at 4 seconds. A slight chance of showers after midnight.
.THURSDAY...Southeast winds 10 to 15 knots. Seas around 2 feet.
Wave Detail: Southeast 2 feet at 4 seconds. A chance of showers.
.THURSDAY NIGHT...South winds around 10 knots, becoming southwest
overnight. Seas around 2 feet. Wave Detail: South 2 feet at
5 seconds. A chance of showers with a slight chance of
thunderstorms.
.FRIDAY...West winds around 10 knots, becoming northwest 10 to
15 knots with gusts up to 20 knots in the afternoon. Seas 2 to
3 feet. Wave Detail: South 2 feet at 5 seconds and west 2 feet at
5 seconds.
.FRIDAY NIGHT...North winds 10 to 15 knots, becoming northeast
overnight. Seas 2 to 3 feet.
.SATURDAY...Northeast winds 10 to 15 knots, diminishing to 5 to
10 knots in the afternoon. Seas 2 to 3 feet.
.SATURDAY NIGHT...Northeast winds 5 to 10 knots, becoming east
overnight. Seas around 2 feet.
.SUNDAY...East winds 5 to 10 knots. Seas 1 foot or less.

Winds and seas higher in and near thunderstorms.

$$

GMZ850-170400-
Coastal waters from Tarpon Springs to Suwannee River FL out 20 NM-
245 PM EST Tue Dec 16 2025

.TONIGHT...Northeast winds around 10 knots, becoming east
overnight. Seas 1 foot or less. Wave Detail: North 1 foot at
3 seconds. Bay and inland waters light chop.
.WEDNESDAY...East winds 5 to 10 knots, becoming northeast in the
afternoon. Seas 1 foot or less. Wave Detail: East 1 foot at
2 seconds. Bay and inland waters light chop.
.WEDNESDAY NIGHT...Northeast winds 5 to 10 knots, becoming east
around 10 knots overnight. Seas 1 foot or less. Wave Detail:
Northeast 1 foot at 2 seconds. Bay and inland waters light chop.
A slight chance of showers after midnight.
.THURSDAY...Southeast winds 5 to 10 knots, becoming south in the
afternoon. Seas 1 foot or less. Wave Detail: Southeast 1 foot at
2 seconds. Bay and inland waters light chop. A slight chance of
showers in the morning, then a chance of showers in the
afternoon.
.THURSDAY NIGHT...South winds 5 to 10 knots, becoming southwest
overnight. Seas 1 foot or less. Wave Detail: South 1 foot at
4 seconds. Bay and inland waters light chop. A slight chance of
thunderstorms. Showers likely, mainly in the evening.
.FRIDAY...West winds around 10 knots, becoming northwest 10 to
15 knots in the afternoon. Seas 1 to 2 feet. Wave Detail:
Southwest 2 feet at 5 seconds and southwest 1 foot at 2 seconds.
Bay and inland waters a moderate chop.
.FRIDAY NIGHT...North winds 10 to 15 knots, becoming northeast
overnight. Seas 2 to 3 feet. Bay and inland waters light chop.
.SATURDAY...Northeast winds around 10 knots, becoming north 5 to
10 knots in the afternoon. Seas 1 to 2 feet. Bay and inland
waters light chop.
.SATURDAY NIGHT...Northeast winds 5 to 10 knots, becoming east
overnight. Seas 1 foot or less. Bay and inland waters smooth.
.SUNDAY...East winds 5 to 10 knots, becoming north in the
afternoon. Seas 1 foot or less. Bay and inland waters smooth.


Winds and seas higher in and near thunderstorms.

$$

GMZ870-170400-
Waters from Tarpon Springs to Suwannee River FL out 20 to 60 NM-
245 PM EST Tue Dec 16 2025

.TONIGHT...Northeast winds 10 to 15 knots, becoming east
overnight. Seas around 2 feet. Wave Detail: North 2 feet at
3 seconds.
.WEDNESDAY...East winds around 10 knots, becoming northeast 5 to
10 knots in the afternoon. Seas around 2 feet in the morning, then
1 foot or less. Wave Detail:
East 1 foot at 3 seconds, becoming east 1 foot at 4 seconds.
.WEDNESDAY NIGHT...Northeast winds 5 to 10 knots, becoming east
around 10 knots overnight. Seas 1 foot or less, then around 2 feet
after midnight. Wave Detail: East 1 foot at 4 seconds, becoming
east 1 foot at 3 seconds. A slight chance of showers after
midnight.
.THURSDAY...Southeast winds around 10 knots. Seas around 2 feet.
Wave Detail: Southeast 2 feet at 4 seconds. A chance of showers
in the morning, then showers likely in the afternoon.
.THURSDAY NIGHT...South winds around 10 knots, becoming southwest
overnight. Seas around 2 feet. Wave Detail: South 2 feet at
5 seconds and south 1 foot at 2 seconds. A slight chance of
thunderstorms. Showers likely, mainly in the evening.
.FRIDAY...West winds 10 to 15 knots, becoming northwest with
gusts up to 20 knots in the afternoon. Seas 2 to 3 feet. Wave
Detail: Northwest 3 feet at 5 seconds and south 1 foot at
5 seconds.
.FRIDAY NIGHT...North winds 10 to 15 knots, becoming northeast
overnight. Seas around 3 feet.
.SATURDAY...Northeast winds 10 to 15 knots, diminishing to 5 to
10 knots in the afternoon. Seas 2 to 3 feet.
.SATURDAY NIGHT...Northeast winds 5 to 10 knots, becoming east
overnight. Seas around 2 feet in the evening, then 1 foot or less.
.SUNDAY...East winds 5 to 10 knots, becoming northeast around
5 knots in the afternoon. Seas 1 foot or less.

Winds and seas higher in and near thunderstorms.

$$


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