National Weather Service Marine Forecast FZUS52 KTBW

FZUS52 KTBW 201808
CWFTBW

Coastal Waters Forecast for Florida
National Weather Service Tampa Bay Ruskin FL
208 PM EDT Tue May 20 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.

GMZ800-210715
Synopsis for the coastal waters from Bonita Beach to Suwannee River
208 PM EDT Tue May 20 2025

SYNOPSIS

Weak high pressure ridge will remain just south of the waters with slight seas and southwest to west winds through Wednesday. A weakening frontal boundary will move through the waters Thursday and Thursday night bringing a chance of showers and a few thunderstorms. Another area of high pressure will build into the waters late in the week through the weekend with slight seas and light winds returning.

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GMZ830-210715
Tampa Bay waters
208 PM EDT Tue May 20 2025

TONIGHT
West winds 5 to 10 knots. Bay and inland waters light chop.

WEDNESDAY
Southwest winds 5 to 10 knots, becoming west 10 to 15 knots in the afternoon. Bay and inland waters a moderate chop.

WEDNESDAY NIGHT
West winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Bay and inland waters a moderate chop.

THURSDAY
Northwest winds 5 to 10 knots. Bay and inland waters light chop. A chance of showers with a slight chance of thunderstorms.

THURSDAY NIGHT
Northwest winds 5 to 10 knots. Bay and inland waters light chop. A slight chance of showers and thunderstorms in the evening.

FRIDAY
Northwest winds 5 to 10 knots. Bay and inland waters light chop.

FRIDAY NIGHT
Northwest winds 5 to 10 knots, becoming northeast after midnight. Bay and inland waters light chop.

SATURDAY
Northeast winds around 5 knots, becoming west in the afternoon. Bay and inland waters light chop.

SATURDAY NIGHT
Northwest winds 5 to 10 knots, becoming east after midnight. Bay and inland waters light chop.

SUNDAY
Southeast winds 5 to 10 knots, becoming southwest in the afternoon. Bay and inland waters light chop.

Winds and waves higher in and near thunderstorms.

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GMZ836-210715
Charlotte Harbor and Pine Island Sound
208 PM EDT Tue May 20 2025

TONIGHT
Southwest winds 5 to 10 knots. Bay and inland waters light chop.

WEDNESDAY
Southwest winds 5 to 10 knots, becoming west 10 to 15 knots in the afternoon. Bay and inland waters a moderate chop.

WEDNESDAY NIGHT
Northwest winds 5 to 10 knots. Bay and inland waters light chop.

THURSDAY
West winds 5 to 10 knots. Bay and inland waters light chop. A slight chance of showers and thunderstorms.

THURSDAY NIGHT
Northwest winds 5 to 10 knots. Bay and inland waters light chop. A slight chance of thunderstorms. A chance of showers, mainly in the evening.

FRIDAY
Northwest winds 5 to 10 knots. Bay and inland waters light chop. A slight chance of showers. A slight chance of thunderstorms in the afternoon.

FRIDAY NIGHT
Northwest winds 5 to 10 knots, becoming northeast after midnight. Bay and inland waters light chop. A slight chance of showers and thunderstorms in the evening.

SATURDAY
East winds around 5 knots, becoming southwest in the afternoon. Bay and inland waters light chop. A slight chance of showers and thunderstorms in the afternoon.

SATURDAY NIGHT
West winds 5 to 10 knots, becoming east after midnight. Bay and inland waters light chop. A slight chance of showers and thunderstorms in the evening.

SUNDAY
Southeast winds 5 to 10 knots, becoming south in the afternoon. Bay and inland waters light chop. A slight chance of showers and thunderstorms in the afternoon.

Winds and waves higher in and near thunderstorms.

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GMZ856-210715
Coastal waters from Bonita Beach to Englewood FL out 20 NM
208 PM EDT Tue May 20 2025

TONIGHT
Southwest winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Southwest 1 foot at 5 seconds. Bay and inland waters light chop.

WEDNESDAY
Southwest winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Southwest 1 foot at 4 seconds. Bay and inland waters light chop.

WEDNESDAY NIGHT
Northwest winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: West 1 foot at 2 seconds and southwest 1 foot at 5 seconds. Bay and inland waters light chop.

THURSDAY
West 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.

THURSDAY NIGHT
Northwest winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Northwest 1 foot at 3 seconds and southwest 1 foot at 6 seconds. Bay and inland waters light chop. A slight chance of showers and thunderstorms.

FRIDAY
Northwest winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Northwest 1 foot at 3 seconds and southwest 1 foot at 5 seconds. Bay and inland waters light chop. A slight chance of showers and thunderstorms.

FRIDAY NIGHT
Northwest winds around 10 knots, becoming northeast after midnight. Seas 1 foot or less. Bay and inland waters light chop. A slight chance of showers and thunderstorms in the evening.

SATURDAY
Northeast winds around 5 knots, becoming southwest in the afternoon. Seas 1 foot or less. Bay and inland waters light chop.

SATURDAY NIGHT
Northwest winds 5 to 10 knots, becoming east after midnight. Seas 1 foot or less. Bay and inland waters light chop.

SUNDAY
Southeast winds 5 to 10 knots, becoming south in the afternoon. Seas 1 foot or less. Bay and inland waters light chop. A slight chance of showers and thunderstorms in the afternoon.

Winds and seas higher in and near thunderstorms.

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GMZ876-210715
Waters from Bonita Beach to Englewood FL out 20 to 60 NM
208 PM EDT Tue May 20 2025

TONIGHT
Southwest winds around 5 knots. Seas 1 foot or less. Wave Detail: South 1 foot at 5 seconds.

WEDNESDAY
Southwest winds around 5 knots. Seas 1 foot or less. Wave Detail: South 1 foot at 5 seconds.

WEDNESDAY NIGHT
Northwest winds around 5 knots. Seas 1 foot or less. Wave Detail: West 1 foot at 2 seconds and southwest 1 foot at 6 seconds.

THURSDAY
Northwest winds around 5 knots. Seas 1 foot or less. Wave Detail: Northwest 1 foot at 3 seconds and southwest 1 foot at 6 seconds. A slight chance of showers and thunderstorms.

THURSDAY NIGHT
Northwest winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Northwest 1 foot at 2 seconds and southwest 1 foot at 6 seconds. A slight chance of showers and thunderstorms after midnight.

FRIDAY
Northwest winds around 5 knots. Seas 1 foot or less. Wave Detail: Northwest 1 foot at 3 seconds and southwest 1 foot at 6 seconds. A slight chance of thunderstorms in the morning. A slight chance of showers.

FRIDAY NIGHT
Northwest winds 5 to 10 knots, becoming north after midnight. Seas 1 foot or less.

SATURDAY
East winds around 5 knots. Seas 1 foot or less.

SATURDAY NIGHT
Northwest winds around 5 knots, becoming east after midnight. Seas 1 foot or less.

SUNDAY
Southeast winds 5 to 10 knots. Seas 1 foot or less.

Winds and seas higher in and near thunderstorms.

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GMZ853-210715
Coastal waters from Englewood to Tarpon Springs FL out 20 NM
208 PM EDT Tue May 20 2025

TONIGHT
Southwest winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Southwest 1 foot at 4 seconds. Bay and inland waters light chop.

WEDNESDAY
West winds 5 to 10 knots. Seas 1 foot or less, then around 2 feet in the afternoon. Wave Detail: Southwest 1 foot at 4 seconds. Bay and inland waters light chop.

WEDNESDAY NIGHT
West winds 5 to 10 knots. Seas around 2 feet in the evening, then 1 foot or less. Wave Detail: Southwest 1 foot at 4 seconds. Bay and inland waters light chop. A slight chance of showers and thunderstorms after midnight.

THURSDAY
Northwest winds around 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 with a slight chance of thunderstorms.

THURSDAY NIGHT
Northwest 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.

FRIDAY
Northwest 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 in the morning.

FRIDAY NIGHT
Northwest winds around 10 knots, becoming north after midnight. Seas 1 foot or less. Bay and inland waters light chop.

SATURDAY
Northeast winds 5 to 10 knots, becoming northwest in the afternoon. Seas 1 foot or less. Bay and inland waters light chop.

SATURDAY NIGHT
Northwest winds 5 to 10 knots, becoming east after midnight. Seas 1 foot or less. Bay and inland waters light chop.

SUNDAY
Southeast winds 5 to 10 knots, becoming southwest in the afternoon. Seas 1 foot or less. Bay and inland waters light chop.

Winds and seas higher in and near thunderstorms.

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GMZ873-210715
Waters from Englewood to Tarpon Springs FL out 20 to 60 NM
208 PM EDT Tue May 20 2025

TONIGHT
Southwest winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Southwest 1 foot at 5 seconds.

WEDNESDAY
Southwest winds 5 to 10 knots. Seas 1 foot or less, then around 2 feet in the afternoon. Wave Detail: South 1 foot at 5 seconds, becoming southwest 1 foot at 4 seconds.

WEDNESDAY NIGHT
West winds 5 to 10 knots. Seas around 2 feet. Wave Detail: West 1 foot at 2 seconds and south 1 foot at 5 seconds. A slight chance of showers and thunderstorms after midnight.

THURSDAY
Northwest winds 5 to 10 knots. Seas around 2 feet. Wave Detail: West 1 foot at 4 seconds. A chance of showers with a slight chance of thunderstorms.

THURSDAY NIGHT
Northwest winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Northwest 1 foot at 3 seconds and southwest 1 foot at 6 seconds. A slight chance of showers and thunderstorms after midnight.

FRIDAY
Northwest winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Northwest 1 foot at 3 seconds and southwest 1 foot at 6 seconds. A slight chance of showers and thunderstorms in the morning.

FRIDAY NIGHT
North winds 5 to 10 knots. Seas 1 foot or less.

SATURDAY
Northeast winds 5 to 10 knots. Seas 1 foot or less.

SATURDAY NIGHT
Northwest winds 5 to 10 knots, becoming east after midnight. Seas 1 foot or less.

SUNDAY
Southeast winds 5 to 10 knots. Seas 1 foot or less.

Winds and seas higher in and near thunderstorms.

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GMZ850-210715
Coastal waters from Tarpon Springs to Suwannee River FL out 20 NM
208 PM EDT Tue May 20 2025

TONIGHT
Southwest winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Southwest 1 foot at 4 seconds. Bay and inland waters light chop.

WEDNESDAY
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 southwest 2 feet at 4 seconds. Bay and inland waters a moderate chop.

WEDNESDAY NIGHT
West winds 10 to 15 knots. Seas around 2 feet. Wave Detail: Southwest 2 feet at 5 seconds. Bay and inland waters a moderate chop. A chance of showers with a slight chance of thunderstorms after midnight.

THURSDAY
Northwest winds 5 to 10 knots. Seas around 2 feet in the morning, then 1 foot or less. Wave Detail: Southwest 1 foot at 5 seconds. Bay and inland waters light chop. A chance of showers with a slight chance of thunderstorms.

THURSDAY NIGHT
West winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: West 1 foot at 5 seconds. Bay and inland waters light chop. A slight chance of showers and thunderstorms in the evening.

FRIDAY
Northwest winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: West 1 foot at 4 seconds. Bay and inland waters light chop.

FRIDAY NIGHT
Northwest winds 5 to 10 knots, becoming north after midnight. Seas 1 foot or less. Bay and inland waters light chop.

SATURDAY
Northeast winds 5 to 10 knots, becoming west in the afternoon. Seas 1 foot or less. Bay and inland waters light chop.

SATURDAY NIGHT
Northwest winds 5 to 10 knots, becoming east after midnight. Seas 1 foot or less. Bay and inland waters light chop.

SUNDAY
Southeast winds 5 to 10 knots, becoming southwest in the afternoon. Seas 1 foot or less. Bay and inland waters light chop.

Winds and seas higher in and near thunderstorms.

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GMZ870-210715
Waters from Tarpon Springs to Suwannee River FL out 20 to 60 NM
208 PM EDT Tue May 20 2025

TONIGHT
Southwest winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Southwest 1 foot at 5 seconds.

WEDNESDAY
Southwest winds around 10 knots. Seas around 2 feet. Wave Detail: Southwest 1 foot at 4 seconds.

WEDNESDAY NIGHT
West winds around 10 knots. Seas around 2 feet. Wave Detail: Southwest 1 foot at 5 seconds. A slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight.

THURSDAY
Northwest winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southwest 1 foot at 5 seconds. A chance of showers with a slight chance of thunderstorms.

THURSDAY NIGHT
West winds 5 to 10 knots. Seas 1 foot or less, then around 2 feet after midnight. Wave Detail: West 1 foot at 5 seconds.

FRIDAY
Northwest winds 5 to 10 knots. Seas around 2 feet in the morning, then 1 foot or less. Wave Detail: Northwest 1 foot at 3 seconds and southwest 1 foot at 6 seconds.

FRIDAY NIGHT
Northwest winds 5 to 10 knots. Seas 1 foot or less.

SATURDAY
Northeast winds 5 to 10 knots, becoming east in the afternoon. Seas 1 foot or less.

SATURDAY NIGHT
Northwest winds 5 to 10 knots, becoming east after midnight. Seas 1 foot or less.

SUNDAY
South winds around 5 knots. Seas 1 foot or less.

Winds and seas higher in and near thunderstorms.