National Weather Service Marine Forecast FZUS52 KTBW

FZUS52 KTBW 170809
CWFTBW

Coastal Waters Forecast for Florida
National Weather Service Tampa Bay Ruskin FL
309 AM EST Sat Jan 17 2026

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.

GMZ800-172030
Synopsis for the coastal waters from Bonita Beach to Suwannee River
309 AM EST Sat Jan 17 2026

SYNOPSIS

High pressure ridging across the waters from the Atlantic will keep marine conditions below headline criteria through tonight. Winds will increase beginning early Sunday morning ahead of a cold front that will bring chances of rain and Small Craft Advisory conditions Sunday and Sunday night. Conditions will improve on Monday, but a tight pressure gradient will keep winds around Exercise Caution levels through the middle of the week.

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GMZ830-172030
Tampa Bay waters
309 AM EST Sat Jan 17 2026

TODAY
East winds around 5 knots, becoming south this afternoon. Bay and inland waters smooth.

TONIGHT
South winds around 5 knots, becoming east after midnight. Bay and inland waters smooth.

SUNDAY
Northwest winds 15 to 20 knots, becoming north 20 to 25 knots in the afternoon. Bay and inland waters rough. Showers likely, mainly in the morning.

SUNDAY NIGHT
North winds 10 to 15 knots. Bay and inland waters a moderate chop.

MONDAY
North winds 10 to 15 knots. Bay and inland waters a moderate chop.

MONDAY NIGHT
North winds 10 to 15 knots. Bay and inland waters a moderate chop.

TUESDAY
North winds 10 to 15 knots. Bay and inland waters a moderate chop.

TUESDAY NIGHT
Northeast winds 10 to 15 knots. Bay and inland waters a moderate chop.

WEDNESDAY
Northeast winds 10 to 15 knots. Bay and inland waters a moderate chop.

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GMZ836-172030
Charlotte Harbor and Pine Island Sound
309 AM EST Sat Jan 17 2026

TODAY
East winds around 5 knots, becoming south this afternoon. Bay and inland waters smooth.

TONIGHT
West winds around 5 knots, becoming south after midnight. Bay and inland waters smooth. Patchy fog after midnight.

SUNDAY
Southwest winds 10 to 15 knots, becoming northwest 15 to 20 knots in the afternoon. Bay and inland waters choppy. A chance of showers in the morning. Patchy fog in the morning.

SUNDAY NIGHT
North winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Bay and inland waters choppy.

MONDAY
North winds 10 to 15 knots. Bay and inland waters a moderate chop.

MONDAY NIGHT
North winds 10 to 15 knots. Bay and inland waters a moderate chop.

TUESDAY
Northeast winds 10 to 15 knots. Bay and inland waters a moderate chop.

TUESDAY NIGHT
Northeast winds 10 to 15 knots. Bay and inland waters a moderate chop.

WEDNESDAY
Northeast winds 10 to 15 knots. Bay and inland waters a moderate chop.

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GMZ856-172030
Coastal waters from Bonita Beach to Englewood FL out 20 NM
309 AM EST Sat Jan 17 2026

TODAY
East winds 5 to 10 knots, becoming south this afternoon. Seas around 2 feet. Wave Detail: Northwest 2 feet at 6 seconds and east 1 foot at 2 seconds. Bay and inland waters light chop.

TONIGHT
Southwest winds around 5 knots. Seas 1 foot or less. Wave Detail: West 1 foot at 6 seconds. Bay and inland waters smooth.

SUNDAY
Southwest winds 15 to 20 knots, becoming northwest 20 to 25 knots in the afternoon. Seas around 2 feet, building to 3 to 5 feet, occasionally to 6 feet in the afternoon. Wave Detail: Southwest 2 feet at 3 seconds and west 1 foot at 6 seconds, becoming northwest 5 feet at 6 seconds. Bay and inland waters rough. A chance of showers, mainly in the morning.

SUNDAY NIGHT
North winds 15 to 20 knots with gusts up to 25 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northwest 5 feet at 7 seconds. Bay and inland waters choppy.

MONDAY
North winds 15 to 20 knots, diminishing to 10 to 15 knots in the afternoon. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Northwest 4 feet at 7 seconds and northeast 1 foot at 4 seconds. Bay and inland waters choppy.

MONDAY NIGHT
Northeast winds 10 to 15 knots, increasing to 15 to 20 knots after midnight. Seas 2 to 3 feet. Wave Detail: Northwest 3 feet at 6 seconds and northeast 2 feet at 3 seconds. Bay and inland waters choppy.

TUESDAY
Northeast winds 15 to 20 knots. Seas 2 to 3 feet. Bay and inland waters choppy.

TUESDAY NIGHT
Northeast winds 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Bay and inland waters choppy.

WEDNESDAY
Northeast winds 10 to 15 knots. Seas 2 to 3 feet. Bay and inland waters a moderate chop.

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GMZ876-172030
Waters from Bonita Beach to Englewood FL out 20 to 60 NM
309 AM EST Sat Jan 17 2026

TODAY
East winds 5 to 10 knots, becoming southeast late. Seas around 2 feet. Wave Detail: Northwest 2 feet at 6 seconds and east 1 foot at 3 seconds.

TONIGHT
South winds around 5 knots. Seas 1 foot or less. Wave Detail: East 1 foot at 3 seconds and west 1 foot at 6 seconds.

SUNDAY
West winds 15 to 20 knots, becoming northwest 25 to 30 knots in the afternoon. Seas 2 to 3 feet, building to 4 to 6 feet, occasionally to 8 feet in the afternoon. Wave Detail: West 3 feet at 6 seconds and southwest 2 feet at 3 seconds, becoming northwest 6 feet at 6 seconds. Showers likely, mainly in the morning.

SUNDAY NIGHT
North winds 15 to 20 knots with gusts up to 25 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Northwest 7 feet at 8 seconds.

MONDAY
North winds around 15 knots with gusts up to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: North 5 feet at 6 seconds.

MONDAY NIGHT
Northeast winds 15 to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: North 3 feet at 6 seconds.

TUESDAY
Northeast winds 15 to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet.

TUESDAY NIGHT
Northeast winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet.

WEDNESDAY
Northeast winds 15 to 20 knots, diminishing to 10 to 15 knots in the afternoon. Seas 3 to 5 feet, occasionally to 6 feet.

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GMZ853-172030
Coastal waters from Englewood to Tarpon Springs FL out 20 NM
309 AM EST Sat Jan 17 2026

TODAY
East winds 5 to 10 knots, becoming south this afternoon. Seas around 2 feet. Wave Detail: West 2 feet at 6 seconds and east 1 foot at 2 seconds. Bay and inland waters light chop.

TONIGHT
South winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Southeast 1 foot at 2 seconds and west 1 foot at 6 seconds. Bay and inland waters light chop. A slight chance of showers after midnight.

SUNDAY
West winds 20 to 25 knots, becoming north 25 to 30 knots in the afternoon. Seas 2 to 4 feet, occasionally to 5 feet, building to 4 to 6 feet, occasionally to 8 feet in the afternoon. Wave Detail: West 4 feet at 4 seconds, becoming northwest 6 feet at 7 seconds. Bay and inland waters very rough. Showers likely, mainly in the morning.

SUNDAY NIGHT
North winds 15 to 20 knots with gusts up to 25 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: North 6 feet at 7 seconds. Bay and inland waters choppy.

MONDAY
North winds 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: North 3 feet at 5 seconds. Bay and inland waters a moderate chop.

MONDAY NIGHT
Northeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: North 2 feet at 5 seconds. Bay and inland waters a moderate chop.

TUESDAY
Northeast winds 15 to 20 knots. Seas 2 to 3 feet. Bay and inland waters choppy.

TUESDAY NIGHT
Northeast winds 15 to 20 knots. Seas 2 to 3 feet. Bay and inland waters choppy.

WEDNESDAY
Northeast winds 10 to 15 knots. Seas 2 to 3 feet. Bay and inland waters a moderate chop.

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GMZ873-172030
Waters from Englewood to Tarpon Springs FL out 20 to 60 NM
309 AM EST Sat Jan 17 2026

TODAY
Southeast winds 5 to 10 knots. Seas around 2 feet. Wave Detail: West 2 feet at 6 seconds and southeast 1 foot at 3 seconds.

TONIGHT
South winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Southeast 1 foot at 3 seconds and west 1 foot at 6 seconds. A slight chance of showers after midnight.

SUNDAY
Northwest winds 20 to 25 knots, becoming north 25 to 30 knots in the afternoon. Seas 2 to 4 feet, occasionally to 5 feet, building to 5 to 7 feet, occasionally to 9 feet in the afternoon. Wave Detail: West 4 feet at 4 seconds, becoming north 7 feet at 7 seconds. Showers, mainly in the morning.

SUNDAY NIGHT
North winds 15 to 20 knots with gusts up to 25 knots. Seas 5 to 7 feet, occasionally to 9 feet, subsiding to 3 to 5 feet, occasionally to 6 feet after midnight. Wave Detail: North 7 feet at 7 seconds, becoming north 5 feet at 7 seconds.

MONDAY
North winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: North 3 feet at 6 seconds.

MONDAY NIGHT
Northeast winds around 15 knots with gusts up to 20 knots. Seas 2 to 3 feet. Wave Detail: North 3 feet at 5 seconds.

TUESDAY
Northeast winds 15 to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet.

TUESDAY NIGHT
Northeast winds 15 to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet.

WEDNESDAY
Northeast winds 15 to 20 knots, diminishing to 10 to 15 knots in the afternoon. Seas 2 to 4 feet, occasionally to 5 feet.

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GMZ850-172030
Coastal waters from Tarpon Springs to Suwannee River FL out 20 NM
309 AM EST Sat Jan 17 2026

TODAY
Southeast winds 5 to 10 knots, becoming southwest late. Seas 1 to 2 feet this morning, then 1 foot or less. Wave Detail: Southeast 1 foot at 2 seconds and west 1 foot at 7 seconds, becoming south 1 foot at 2 seconds and west 1 foot at 6 seconds. Bay and inland waters light chop.

TONIGHT
South winds around 5 knots, becoming north after midnight. Seas 1 foot or less. Wave Detail: South 1 foot at 3 seconds and west 1 foot at 6 seconds. Bay and inland waters light chop. A slight chance of showers in the evening, then a chance of showers after midnight.

SUNDAY
North winds 15 to 20 knots with gusts up to 25 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Northwest 3 feet at 4 seconds. Bay and inland waters choppy. Showers, mainly in the morning.

SUNDAY NIGHT
North winds 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: North 3 feet at 5 seconds. Bay and inland waters a moderate chop.

MONDAY
North winds 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: North 2 feet at 4 seconds. Bay and inland waters light chop.

MONDAY NIGHT
North winds 5 to 10 knots, increasing to 10 to 15 knots after midnight. Seas 1 to 2 feet. Wave Detail: North 1 foot at 4 seconds. Bay and inland waters a moderate chop.

TUESDAY
North winds 10 to 15 knots. Seas around 2 feet. Bay and inland waters a moderate chop.

TUESDAY NIGHT
Northeast winds 10 to 15 knots. Seas around 2 feet. Bay and inland waters a moderate chop.

WEDNESDAY
Northeast winds 10 to 15 knots. Seas 1 to 2 feet. Bay and inland waters a moderate chop.

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GMZ870-172030
Waters from Tarpon Springs to Suwannee River FL out 20 to 60 NM
309 AM EST Sat Jan 17 2026

TODAY
South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 3 seconds and west 1 foot at 7 seconds.

TONIGHT
South winds 5 to 10 knots, becoming north 10 to 15 knots with gusts up to 20 knots after midnight. Seas around 2 feet. Wave Detail: South 1 foot at 3 seconds and west 1 foot at 6 seconds. A slight chance of showers in the evening, then a chance of showers after midnight.

SUNDAY
North winds 20 to 25 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: North 6 feet at 6 seconds. Showers, mainly in the morning.

SUNDAY NIGHT
North winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: North 5 feet at 6 seconds.

MONDAY
North winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Northwest 2 feet at 5 seconds.

MONDAY NIGHT
North winds 10 to 15 knots. Seas around 2 feet. Wave Detail: North 2 feet at 4 seconds.

TUESDAY
North winds 15 to 20 knots. Seas 2 to 3 feet.

TUESDAY NIGHT
Northeast winds around 15 knots. Seas 2 to 3 feet.

WEDNESDAY
Northeast winds 10 to 15 knots. Seas 2 to 3 feet.