999
FZUS52 KTBW 180700
CWFTBW

Coastal Waters Forecast for Florida
National Weather Service Tampa Bay Ruskin FL
300 AM EDT Mon Aug 18 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.

GMZ800-181500-
Synopsis for the coastal waters from Bonita Beach to Suwannee River-
300 AM EDT Mon Aug 18 2025

.SYNOPSIS...

Light winds and seas continue with high pressure directly
overhead. However, some thunderstorms should be expected near and
along the coast during the afternoon and evening, with additional
thunderstorms forming offshore overnight and during the morning
hours. By midweek the flow will shift to northeast and then to
west to southwest late in the week, with a slight increase in
winds and seas likely. Scattered thunderstorms will remain
possible which could cause locally higher winds and seas.

&&

$$

GMZ830-181500-
Tampa Bay waters-
300 AM EDT Mon Aug 18 2025

.TODAY...East winds around 5 knots, becoming west 5 to 10 knots
this afternoon. Bay and inland waters light chop. Scattered
showers and thunderstorms this afternoon.
.TONIGHT...Northeast winds 5 to 10 knots, becoming east after
midnight. Bay and inland waters light chop. Scattered showers and
thunderstorms in the evening.
.TUESDAY...Northeast winds 5 to 10 knots, becoming north late in
the afternoon. Bay and inland waters light chop. Numerous showers
and thunderstorms in the afternoon.
.TUESDAY NIGHT...Northeast winds 5 to 10 knots. Bay and inland
waters light chop. Numerous showers and thunderstorms, mainly in
the evening.
.WEDNESDAY...North winds 5 to 10 knots, becoming northwest in the
afternoon. Bay and inland waters light chop. Scattered showers
and thunderstorms in the afternoon.
.WEDNESDAY NIGHT...Northwest winds 5 to 10 knots. Bay and inland
waters light chop. Scattered showers and thunderstorms, mainly in
the evening.
.THURSDAY...West winds 5 to 10 knots. Bay and inland waters light
chop. Scattered showers and thunderstorms.
.THURSDAY NIGHT...West winds 5 to 10 knots. Bay and inland waters
light chop. Scattered showers and thunderstorms, mainly in the
evening.
.FRIDAY...West winds 5 to 10 knots. Bay and inland waters light
chop. Scattered showers and thunderstorms.

Winds and waves higher in and near thunderstorms.

$$

GMZ836-181500-
Charlotte Harbor and Pine Island Sound-
300 AM EDT Mon Aug 18 2025

.TODAY...East winds around 5 knots, becoming west 5 to 10 knots
this afternoon. Bay and inland waters light chop. Scattered
showers and thunderstorms this afternoon.
.TONIGHT...North winds 5 to 10 knots, becoming northeast after
midnight. Bay and inland waters light chop. Scattered showers and
thunderstorms in the evening.
.TUESDAY...Northeast winds around 5 knots, becoming northwest 5 to
10 knots in the afternoon. Bay and inland waters light chop.
Numerous showers and thunderstorms in the afternoon.
.TUESDAY NIGHT...Northwest winds 5 to 10 knots, becoming northeast
after midnight. Bay and inland waters light chop. Numerous showers
and thunderstorms, mainly in the evening.
.WEDNESDAY...North winds 5 to 10 knots, becoming northwest 10 to
15 knots in the afternoon. Bay and inland waters a moderate chop.
Scattered showers and thunderstorms in the afternoon.
.WEDNESDAY NIGHT...Northwest winds around 10 knots, diminishing
to 5 to 10 knots after midnight. Bay and inland waters a light
chop. Scattered showers and thunderstorms, mainly in the evening.
.THURSDAY...West winds 5 to 10 knots, increasing to around
10 knots in the afternoon. Bay and inland waters a light chop.
Scattered showers and thunderstorms.
.THURSDAY NIGHT...West winds 5 to 10 knots. Bay and inland waters
light chop. Scattered showers and thunderstorms, mainly in the
evening.
.FRIDAY...West winds 5 to 10 knots. Bay and inland waters light
chop. Scattered showers and thunderstorms.

Winds and waves higher in and near thunderstorms.

$$

GMZ856-181500-
Coastal waters from Bonita Beach to Englewood FL out 20 NM-
300 AM EDT Mon Aug 18 2025

.TODAY...East winds around 5 knots, becoming southwest 5 to
10 knots early this afternoon, then becoming west late. Seas
1 foot or less. Wave Detail: Northwest 1 foot at 2 seconds. Bay
and inland waters light chop. Isolated showers and thunderstorms.
.TONIGHT...Northwest winds around 10 knots, becoming northeast
5 to 10 knots after midnight. Seas 1 foot or less. Wave Detail:
North 1 foot at 2 seconds. Bay and inland waters light chop.
Isolated showers and thunderstorms.
.TUESDAY...Northeast winds around 5 knots, becoming northwest 5 to
10 knots in the afternoon. Seas 1 foot or less. Wave Detail: North
1 foot at 2 seconds. Bay and inland waters light chop. Isolated
showers and thunderstorms in the morning, then scattered showers
and thunderstorms in the afternoon.
.TUESDAY NIGHT...North winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: Northwest 1 foot at 3 seconds. Bay and inland waters
light chop. Scattered showers and thunderstorms.
.WEDNESDAY...North winds 5 to 10 knots, becoming northwest 10 to
15 knots in the afternoon. Seas 1 foot or less. Wave Detail: North
1 foot at 3 seconds. Bay and inland waters a moderate chop.
Isolated showers and thunderstorms in the morning, then scattered
showers and thunderstorms in the afternoon.
.WEDNESDAY NIGHT...Northwest winds 10 to 15 knots, diminishing to
5 to 10 knots after midnight. Seas 1 foot or less. Wave Detail:
Northwest 1 foot at 3 seconds. Bay and inland waters a moderate
chop. Scattered showers and thunderstorms.
.THURSDAY...West winds 5 to 10 knots. Seas 1 foot or less. Bay
and inland waters light chop. Scattered showers and
thunderstorms.
.THURSDAY NIGHT...West winds 5 to 10 knots. Seas 1 foot or less.
Bay and inland waters light chop. Scattered showers and
thunderstorms.
.FRIDAY...West winds 5 to 10 knots. Seas 1 foot or less. Bay and
inland waters light chop. Scattered showers and thunderstorms.

Winds and seas higher in and near thunderstorms.

$$

GMZ876-181500-
Waters from Bonita Beach to Englewood FL out 20 to 60 NM-
300 AM EDT Mon Aug 18 2025

.TODAY...East winds around 5 knots, becoming west this afternoon.
Seas 1 foot or less. Scattered showers and thunderstorms, mainly
this morning.
.TONIGHT...Northwest winds 5 to 10 knots, becoming northeast
after midnight. Seas 1 foot or less. Wave Detail: North 1 foot at
2 seconds. Isolated showers and thunderstorms in the evening,
then scattered showers and thunderstorms after midnight.
.TUESDAY...North winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: North 1 foot at 2 seconds. Isolated showers and
thunderstorms in the morning, then scattered showers and
thunderstorms in the afternoon.
.TUESDAY NIGHT...North winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: North 1 foot at 3 seconds. Scattered showers and
thunderstorms.
.WEDNESDAY...North winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: North 1 foot at 3 seconds. Scattered showers and
thunderstorms.
.WEDNESDAY NIGHT...Northwest winds 5 to 10 knots. Seas 1 foot or
less. Wave Detail: Northwest 1 foot at 3 seconds. Scattered
showers and thunderstorms.
.THURSDAY...West winds 5 to 10 knots. Seas 1 foot or less.
Scattered showers and thunderstorms.
.THURSDAY NIGHT...West winds 5 to 10 knots. Seas 1 foot or less.
Scattered showers and thunderstorms.
.FRIDAY...West winds around 5 knots. Seas 1 foot or less.
Scattered showers and thunderstorms.

Winds and seas higher in and near thunderstorms.

$$

GMZ853-181500-
Coastal waters from Englewood to Tarpon Springs FL out 20 NM-
300 AM EDT Mon Aug 18 2025

.TODAY...East winds around 5 knots, becoming west 5 to 1o knots
this afternoon. Seas 1 foot or less. Wave Detail: East 1 foot at
2 seconds. Bay and inland waters light chop. Isolated showers and
thunderstorms.
.TONIGHT...North winds 5 to 10 knots, becoming east after
midnight. Seas 1 foot or less. Wave Detail: North 1 foot at
2 seconds. Bay and inland waters light chop. Isolated showers and
thunderstorms.
.TUESDAY...Northeast winds 5 to 10 knots, becoming north in the
afternoon. Seas 1 foot or less. Wave Detail: Northeast 1 foot at
2 seconds. Bay and inland waters light chop. Isolated showers and
thunderstorms in the morning, then scattered showers and
thunderstorms in the afternoon.
.TUESDAY NIGHT...North winds around 10 knots, becoming northeast
5 to 10 knots after midnight. Seas 1 foot or less. Wave Detail:
North 1 foot at 3 seconds. Bay and inland waters light chop.
Scattered showers and thunderstorms.
.WEDNESDAY...North winds 5 to 10 knots, becoming northwest 10 to
15 knots in the afternoon. Seas 1 foot or less. Wave Detail:
North 1 foot at 3 seconds. Bay and inland waters a moderate chop.
Isolated showers and thunderstorms in the morning, then scattered
showers and thunderstorms in the afternoon.
.WEDNESDAY NIGHT...Northwest winds around 10 knots, decreasing to
5 to 10 knots after midnight. Seas 1 foot or less. Wave Detail:
North 1 foot at 3 seconds. Bay and inland waters light chop.
Scattered showers and thunderstorms.
.THURSDAY...West winds 5 to 10 knots. Seas 1 foot or less. Bay
and inland waters light chop. Scattered showers and
thunderstorms.
.THURSDAY NIGHT...West winds 5 to 10 knots. Seas 1 foot or less.
Bay and inland waters light chop. Scattered showers and
thunderstorms.
.FRIDAY...West winds 5 to 10 knots. Seas 1 foot or less. Bay and
inland waters light chop. Scattered showers and thunderstorms.

Winds and seas higher in and near thunderstorms.

$$

GMZ873-181500-
Waters from Englewood to Tarpon Springs FL out 20 to 60 NM-
300 AM EDT Mon Aug 18 2025

.TODAY...East winds around 5 knots, becoming northwest late. Seas
1 foot or less. Wave Detail: Northeast 1 foot at 2 seconds.
Scattered showers and thunderstorms, mainly this morning.
.TONIGHT...North winds 5 to 10 knots, becoming east after
midnight. Seas 1 foot or less. Wave Detail: Northeast 1 foot at
2 seconds. Isolated showers and thunderstorms in the evening,
then scattered showers and thunderstorms after midnight.
.TUESDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: Northeast 1 foot at 3 seconds. Isolated showers and
thunderstorms in the morning, then scattered showers and
thunderstorms in the afternoon.
.TUESDAY NIGHT...North winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: North 1 foot at 3 seconds. Scattered showers and
thunderstorms.
.WEDNESDAY...North winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: North 1 foot at 3 seconds. Scattered showers and
thunderstorms.
.WEDNESDAY NIGHT...Northwest winds 5 to 10 knots. Seas 1 foot or
less. Wave Detail: North 1 foot at 3 seconds. Scattered showers
and thunderstorms.
.THURSDAY...West winds 5 to 10 knots. Seas 1 foot or less.
Scattered showers and thunderstorms.
.THURSDAY NIGHT...West winds 5 to 10 knots. Seas 1 foot or less.
Scattered showers and thunderstorms.
.FRIDAY...West winds 5 to 10 knots. Seas 1 foot or less. Numerous
showers and thunderstorms.

Winds and seas higher in and near thunderstorms.

$$

GMZ850-181500-
Coastal waters from Tarpon Springs to Suwannee River FL out 20 NM-
300 AM EDT Mon Aug 18 2025

.TODAY...East winds around 5 knots, becoming northwest 5 to
10 knots this afternoon. Seas 1 foot or less. Wave Detail: East
1 foot at 2 seconds. Bay and inland waters smooth. Isolated
showers and thunderstorms this morning, then scattered showers
and thunderstorms this afternoon.
.TONIGHT...East winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: Northeast 1 foot at 2 seconds. Bay and inland waters
light chop. Scattered showers and thunderstorms, mainly in the
evening.
.TUESDAY...Northeast winds 5 to 10 knots, becoming north in the
afternoon. Seas 1 foot or less. Wave Detail: East 1 foot at 2
seconds. Bay and inland waters light chop. Isolated showers and
thunderstorms in the morning, then scattered showers and
thunderstorms in the afternoon.
.TUESDAY NIGHT...Northeast winds 5 to 10 knots. Seas 1 foot or
less. Wave Detail: Northeast 1 foot at 2 seconds. Bay and inland
waters light chop. Scattered showers and thunderstorms, mainly in
the evening.
.WEDNESDAY...North winds 5 to 10 knots, becoming northwest in the
afternoon. Seas 1 foot or less. Wave Detail: North 1 foot at
2 seconds. Bay and inland waters light chop. Isolated showers and
thunderstorms in the morning, then scattered showers and
thunderstorms in the afternoon.
.WEDNESDAY NIGHT...Northwest winds 5 to 10 knots. Seas 1 foot or
less. Wave Detail: Northwest 1 foot at 2 seconds. Bay and inland
waters light chop. Scattered showers and thunderstorms.
.THURSDAY...West winds 5 to 10 knots. Seas 1 foot or less. Bay
and inland waters light chop. Scattered showers and
thunderstorms.
.THURSDAY NIGHT...West winds 5 to 10 knots. Seas 1 foot or less.
Bay and inland waters light chop. Scattered showers and
thunderstorms.
.FRIDAY...West winds 5 to 10 knots. Seas 1 foot or less. Bay and
inland waters light chop. Scattered showers and thunderstorms.

Winds and seas higher in and near thunderstorms.

$$

GMZ870-181500-
Waters from Tarpon Springs to Suwannee River FL out 20 to 60 NM-
300 AM EDT Mon Aug 18 2025

.TODAY...East winds around 5 knots, becoming northeast late. Seas
1 foot or less. Wave Detail: East 1 foot at 2 seconds. Scattered
showers and thunderstorms until early afternoon, then isolated
showers and thunderstorms.
.TONIGHT...East winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: Northeast 1 foot at 2 seconds. Isolated showers and
thunderstorms in the evening, then scattered showers and
thunderstorms after midnight.
.TUESDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: East 1 foot at 3 seconds. Scattered showers and
thunderstorms.
.TUESDAY NIGHT...Northeast winds 5 to 10 knots. Seas 1 foot or
less. Wave Detail: Northeast 1 foot at 3 seconds. Scattered
showers and thunderstorms.
.WEDNESDAY...Northeast winds around 10 knots, becoming north in
the afternoon. Seas 1 foot or less. Wave Detail: North 1 foot at
3 seconds. Scattered showers and thunderstorms.
.WEDNESDAY NIGHT...Northwest winds 5 to 10 knots. Seas 1 foot or
less. Wave Detail: North 1 foot at 3 seconds. Scattered showers
and thunderstorms.
.THURSDAY...West winds 5 to 10 knots. Seas 1 foot or less.
Scattered showers and thunderstorms.
.THURSDAY NIGHT...West winds 5 to 10 knots. Seas 1 foot or less.
Scattered showers and thunderstorms.
.FRIDAY...West winds 5 to 10 knots. Seas 1 foot or less. Numerous
showers and thunderstorms.

Winds and seas higher in and near thunderstorms.

$$