National Weather Service Marine Forecast FZUS52 KTBW

FZUS52 KTBW 140042
CWFTBW

Coastal Waters Forecast for Florida
National Weather Service Tampa Bay Ruskin FL
842 PM EDT Sun Sep 13 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.

GMZ800-141315
Synopsis for the coastal waters from Bonita Beach to Suwannee River
842 PM EDT Sun Sep 13 2026

SYNOPSIS

Daily showers and storms will be possible each day through the forecast period. Outside of storms, winds will remain light on Monday with speeds around 5 knots and seas less than 2 feet. By Tuesday, an upper level low will start to approach the area. This will shift our winds to the northeast around 10 to 15 knots. These winds will continue to increase quickly as the low approaches, reaching up to 20 to 25 knots by Wednesday afternoon. These higher winds will stick around through Thursday out of the east and northeast. Seas will also build to around 4-7 feet mid-week. Decreasing winds and abating seas expected by the end of the week.

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GMZ830-141315
Tampa Bay waters
842 PM EDT Sun Sep 13 2026

OVERNIGHT
West winds around 5 knots, becoming southwest late this evening and early morning, then becoming southeast around 5 knots late. Bay and inland waters smooth.

MONDAY
Northeast winds around 5 knots, becoming west in the afternoon. Bay and inland waters light chop. Scattered showers with isolated thunderstorms in the afternoon.

MONDAY NIGHT
North winds 5 to 10 knots, becoming east after midnight. Bay and inland waters light chop. Isolated thunderstorms. Scattered showers, mainly in the evening.

TUESDAY
East winds 5 to 10 knots. Bay and inland waters light chop. Numerous showers with isolated thunderstorms in the afternoon.

TUESDAY NIGHT
Northeast winds 10 to 15 knots, increasing to 15 to 20 knots after midnight. Bay and inland waters choppy. Numerous showers with isolated thunderstorms in the evening.

WEDNESDAY
Northeast winds 15 to 20 knots, increasing to 20 to 25 knots in the afternoon. Waves 2 to 3 feet. Bay and inland waters rough. Scattered showers with isolated thunderstorms in the afternoon.

WEDNESDAY NIGHT
Northeast winds 20 to 25 knots, diminishing to 15 to 20 knots after midnight. Waves 2 to 3 feet. Bay and inland waters rough. Scattered showers with isolated thunderstorms in the evening.

THURSDAY
Northeast winds 15 to 20 knots. Bay and inland waters choppy. Scattered showers with isolated thunderstorms in the afternoon.

THURSDAY NIGHT
Northeast winds 10 to 15 knots. Bay and inland waters a moderate chop. Isolated thunderstorms. Scattered showers, mainly in the evening.

FRIDAY
East winds 5 to 10 knots. Bay and inland waters light chop. Isolated thunderstorms. Isolated showers in the morning, then numerous showers in the afternoon.

Winds and waves higher in and near thunderstorms.

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GMZ836-141315
Charlotte Harbor and Pine Island Sound
842 PM EDT Sun Sep 13 2026

OVERNIGHT
East winds around 5 knots. Bay and inland waters smooth. Isolated showers and thunderstorms early this evening. Isolated showers and thunderstorms late.

MONDAY
East winds around 5 knots, becoming west around 5 knots in the afternoon. Bay and inland waters smooth. Isolated thunderstorms. Isolated showers in the morning, then scattered showers in the afternoon.

MONDAY NIGHT
North winds 5 to 10 knots, becoming east after midnight. Bay and inland waters light chop. Isolated thunderstorms. Scattered showers, mainly in the evening.

TUESDAY
East winds 5 to 10 knots. Bay and inland waters light chop. Isolated thunderstorms. Isolated showers in the morning, then widespread showers in the afternoon.

TUESDAY NIGHT
Northeast winds 10 to 15 knots. Bay and inland waters a moderate chop. Isolated thunderstorms. Widespread showers, mainly in the evening.

WEDNESDAY
Northeast winds 15 to 20 knots, increasing to 20 to 25 knots with gusts up to 30 knots in the afternoon. Bay and inland waters rough. Numerous showers with isolated thunderstorms in the afternoon.

WEDNESDAY NIGHT
Northeast winds 20 to 25 knots with gusts up to 30 knots, diminishing to 15 to 20 knots after midnight. Bay and inland waters rough. Isolated thunderstorms. Numerous showers, mainly in the evening.

THURSDAY
Northeast winds 10 to 15 knots. Bay and inland waters a moderate chop. Numerous showers with isolated thunderstorms in the afternoon.

THURSDAY NIGHT
Northeast winds 10 to 15 knots. Bay and inland waters a moderate chop. Isolated thunderstorms. Numerous showers, mainly in the evening.

FRIDAY
East winds 5 to 10 knots. Bay and inland waters light chop. Isolated thunderstorms. Scattered showers in the morning, then widespread showers in the afternoon.

Winds and waves higher in and near thunderstorms.

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GMZ856-141315
Coastal waters from Bonita Beach to Englewood FL out 20 NM
842 PM EDT Sun Sep 13 2026

OVERNIGHT
North winds around 5 knots, becoming east late this evening, then becoming south, becoming east late. Seas 1 foot or less. Bay and inland waters smooth. Isolated showers and thunderstorms early this evening. Isolated showers and thunderstorms late.

MONDAY
Northeast winds around 5 knots, becoming northwest around 5 knots in the afternoon. Seas 1 foot or less. Bay and inland waters smooth. Scattered showers with isolated thunderstorms.

MONDAY NIGHT
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. Scattered showers with isolated thunderstorms.

TUESDAY
East winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: East 1 foot at 2 seconds. Bay and inland waters light chop. Isolated thunderstorms. Scattered showers in the morning, then widespread showers in the afternoon.

TUESDAY NIGHT
Northeast winds 15 to 20 knots. Seas 2 to 3 feet. Wave Detail: Northeast 2 feet at 4 seconds. Bay and inland waters choppy. Isolated thunderstorms. Widespread showers, mainly in the evening.

WEDNESDAY
Northeast winds 15 to 20 knots, increasing to 20 to 25 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: Northeast 3 feet at 4 seconds. Bay and inland waters rough. Widespread showers with isolated thunderstorms in the afternoon.

WEDNESDAY NIGHT
Northeast winds 25 to 30 knots, diminishing to 20 to 25 knots after midnight. Seas 3 to 5 feet, occasionally to 6 feet. Bay and inland waters very rough. Isolated thunderstorms. Widespread showers, mainly in the evening.

THURSDAY
Northeast winds 15 to 20 knots, becoming east 10 to 15 knots in the afternoon. Seas 2 to 4 feet, occasionally to 5 feet. Bay and inland waters choppy. Isolated thunderstorms. Isolated showers in the morning, then numerous showers in the afternoon.

THURSDAY NIGHT
East winds 15 to 20 knots. Seas 2 to 3 feet. Bay and inland waters choppy. Isolated thunderstorms. Numerous showers, mainly in the evening.

FRIDAY
East winds 10 to 15 knots, becoming southeast 5 to 10 knots in the afternoon. Seas around 2 feet. Bay and inland waters a moderate chop. Isolated thunderstorms. Scattered showers in the morning, then numerous showers in the afternoon.

Winds and seas higher in and near thunderstorms.

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GMZ876-141315
Waters from Bonita Beach to Englewood FL out 20 to 60 NM
842 PM EDT Sun Sep 13 2026

OVERNIGHT
Northwest winds around 5 knots. Seas 1 foot or less. Isolated showers and thunderstorms late.

MONDAY
North winds around 5 knots. Seas 1 foot or less. Scattered showers with isolated thunderstorms.

MONDAY NIGHT
North winds around 5 knots, becoming east after midnight. Seas 1 foot or less. Wave Detail: North 1 foot at 2 seconds and south 1 foot at 6 seconds. Isolated thunderstorms. Isolated showers in the evening, then numerous showers after midnight.

TUESDAY
East winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: East 1 foot at 2 seconds. Numerous showers with isolated thunderstorms.

TUESDAY NIGHT
Northeast winds 15 to 20 knots with gusts up to 25 knots. Seas around 2 feet, building to 3 to 4 feet, occasionally to 5 feet after midnight. Wave Detail: Northeast 2 feet at 3 seconds, becoming east 4 feet at 4 seconds. Numerous showers with isolated thunderstorms.

WEDNESDAY
Northeast winds 15 to 20 knots with gusts up to 25 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast 4 feet at 5 seconds. Isolated thunderstorms. Isolated showers in the morning, then widespread showers in the afternoon.

WEDNESDAY NIGHT
Northeast winds 25 to 30 knots, diminishing to 20 to 25 knots after midnight. Seas 5 to 7 feet, occasionally to 9 feet. Isolated thunderstorms. Widespread showers, mainly in the evening.

THURSDAY
East winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. Isolated thunderstorms. Scattered showers in the morning, then numerous showers in the afternoon.

THURSDAY NIGHT
East winds 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Widespread showers with isolated thunderstorms.

FRIDAY
East winds 10 to 15 knots, diminishing to 5 to 10 knots in the afternoon. Seas 2 to 3 feet. Numerous showers with isolated thunderstorms.

Winds and seas higher in and near thunderstorms.

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GMZ853-141315
Coastal waters from Englewood to Tarpon Springs FL out 20 NM
842 PM EDT Sun Sep 13 2026

OVERNIGHT
Northwest winds around 5 knots, becoming west. Seas 1 foot or less. Wave Detail: Northwest 1 foot at 2 seconds and south 1 foot at 3 seconds. Bay and inland waters smooth. Isolated showers and thunderstorms early this evening. Isolated showers and thunderstorms late.

MONDAY
Northwest winds 5 to 10 knots. Seas 1 foot or less. Bay and inland waters light chop. Isolated thunderstorms. Scattered showers, mainly in the morning.

MONDAY NIGHT
North winds 5 to 10 knots, becoming east after midnight. Seas 1 foot or less. Wave Detail: Northwest 1 foot at 2 seconds and northeast 1 foot at 2 seconds. Bay and inland waters light chop. Scattered showers with isolated thunderstorms.

TUESDAY
East winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: East 1 foot at 2 seconds and northwest 1 foot at 3 seconds. Bay and inland waters light chop. Isolated thunderstorms. Isolated showers in the morning, then numerous showers in the afternoon.

TUESDAY NIGHT
Northeast winds 15 to 20 knots with gusts up to 25 knots. Seas 2 to 3 feet. Wave Detail: Northeast 3 feet at 4 seconds and southwest 1 foot at 6 seconds. Bay and inland waters choppy. Isolated thunderstorms. Numerous showers, mainly in the evening.

WEDNESDAY
Northeast winds 20 to 25 knots with gusts up to 30 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast 3 feet at 5 seconds and north 1 foot at 5 seconds. Bay and inland waters rough. Scattered showers with isolated thunderstorms in the afternoon.

WEDNESDAY NIGHT
Northeast winds 25 to 30 knots, diminishing to 20 to 25 knots after midnight. Seas 3 to 5 feet, occasionally to 6 feet. Bay and inland waters very rough. Scattered showers with isolated thunderstorms in the evening.

THURSDAY
Northeast winds 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Bay and inland waters choppy. Numerous showers with isolated thunderstorms in the afternoon.

THURSDAY NIGHT
East winds 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Bay and inland waters choppy. Isolated thunderstorms. Numerous showers, mainly in the evening.

FRIDAY
East winds 10 to 15 knots. Seas 2 to 3 feet. Bay and inland waters a moderate chop. Isolated thunderstorms. Scattered showers in the morning, then numerous showers in the afternoon.

Winds and seas higher in and near thunderstorms.

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GMZ873-141315
Waters from Englewood to Tarpon Springs FL out 20 to 60 NM
842 PM EDT Sun Sep 13 2026

OVERNIGHT
Northwest winds around 5 knots, becoming west. Seas 1 foot or less. Wave Detail: South 1 foot at 3 seconds.

MONDAY
North winds around 5 knots. Seas 1 foot or less. Wave Detail: Northwest 1 foot at 2 seconds and southwest 1 foot at 7 seconds. Isolated thunderstorms. Scattered showers, mainly in the morning.

MONDAY NIGHT
Northeast winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: North 1 foot at 2 seconds and south 1 foot at 7 seconds. Isolated thunderstorms. Isolated showers in the evening, then scattered showers after midnight.

TUESDAY
East winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Northeast 1 foot at 3 seconds and south 1 foot at 6 seconds. Isolated thunderstorms. Scattered showers in the morning, then numerous showers in the afternoon.

TUESDAY NIGHT
East winds 15 to 20 knots with gusts up to 25 knots. Seas 2 to 3 feet, building to 3 to 5 feet, occasionally to 6 feet after midnight. Wave Detail: Northeast 3 feet at 3 seconds and southwest 1 foot at 6 seconds, becoming northeast 4 feet at 5 seconds and southwest 1 foot at 6 seconds. Numerous showers with isolated thunderstorms.

WEDNESDAY
Northeast winds 20 to 25 knots with gusts up to 30 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 6 seconds and north 1 foot at 4 seconds. Isolated thunderstorms. Isolated showers in the morning, then scattered showers in the afternoon.

WEDNESDAY NIGHT
Northeast winds 25 to 30 knots, diminishing to 20 to 25 knots after midnight. Seas 5 to 7 feet, occasionally to 9 feet. Isolated thunderstorms. Scattered showers, mainly in the evening.

THURSDAY
Northeast winds 20 to 25 knots, diminishing to 15 to 20 knots in the afternoon. Seas 4 to 6 feet, occasionally to 8 feet. Isolated thunderstorms. Isolated showers in the morning, then numerous showers in the afternoon.

THURSDAY NIGHT
East winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Numerous showers with isolated thunderstorms.

FRIDAY
East winds 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Isolated thunderstorms. Scattered showers in the morning, then numerous showers in the afternoon.

Winds and seas higher in and near thunderstorms.

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GMZ850-141315
Coastal waters from Tarpon Springs to Suwannee River FL out 20 NM
842 PM EDT Sun Sep 13 2026

OVERNIGHT
West winds around 5 knots. Seas 1 foot or less. Wave Detail: West 1 foot at 3 seconds. Bay and inland waters smooth.

MONDAY
Northwest winds around 5 knots. Seas 1 foot or less. Wave Detail: West 1 foot at 3 seconds and southwest 1 foot at 7 seconds. Bay and inland waters smooth. Isolated showers and thunderstorms.

MONDAY NIGHT
North winds around 5 knots, becoming east after midnight. Seas 1 foot or less. Wave Detail: Northwest 1 foot at 2 seconds and northeast 1 foot at 2 seconds. Bay and inland waters light chop. Isolated showers and thunderstorms.

TUESDAY
East winds 5 to 10 knots, becoming northeast 10 to 15 knots in the afternoon. Seas 1 foot or less. Wave Detail: East 1 foot at 2 seconds and southwest 1 foot at 7 seconds. Bay and inland waters a moderate chop. Isolated thunderstorms. Isolated showers in the morning, then numerous showers in the afternoon.

TUESDAY NIGHT
Northeast winds 15 to 20 knots with gusts up to 25 knots. Seas 2 to 3 feet. Wave Detail: Northeast 3 feet at 4 seconds and southwest 1 foot at 6 seconds. Bay and inland waters choppy. Numerous showers with isolated thunderstorms in the evening.

WEDNESDAY
Northeast winds 20 to 25 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast 3 feet at 4 seconds. Bay and inland waters rough.

WEDNESDAY NIGHT
Northeast winds 20 to 25 knots, diminishing to 15 to 20 knots after midnight. Seas 2 to 4 feet, occasionally to 5 feet. Bay and inland waters rough.

THURSDAY
Northeast winds 15 to 20 knots. Seas 2 to 3 feet. Bay and inland waters choppy. Scattered showers with isolated thunderstorms in the afternoon.

THURSDAY NIGHT
Northeast winds 20 to 25 knots, diminishing to 15 to 20 knots after midnight. Seas 2 to 3 feet. Bay and inland waters rough. Isolated thunderstorms. Scattered showers, mainly in the evening.

FRIDAY
Northeast winds 10 to 15 knots, diminishing to 5 to 10 knots in the afternoon. Seas 1 to 2 feet. Bay and inland waters a moderate chop. Isolated thunderstorms. Isolated showers in the morning, then numerous showers in the afternoon.

Winds and seas higher in and near thunderstorms.

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GMZ870-141315
Waters from Tarpon Springs to Suwannee River FL out 20 to 60 NM
842 PM EDT Sun Sep 13 2026

OVERNIGHT
West winds around 5 knots. Seas 1 foot or less. Wave Detail: South 1 foot at 4 seconds and south 1 foot at 7 seconds.

MONDAY
North winds around 5 knots. Seas 1 foot or less. Wave Detail: West 1 foot at 2 seconds and southwest 1 foot at 7 seconds. Scattered showers with isolated thunderstorms.

MONDAY NIGHT
Northwest winds around 5 knots, becoming northeast after midnight. Seas 1 foot or less. Wave Detail: Northeast 1 foot at 2 seconds and northwest 1 foot at 3 seconds. Isolated showers and thunderstorms.

TUESDAY
East winds 10 to 15 knots. Seas around 2 feet. Wave Detail: East 2 feet at 3 seconds and southwest 1 foot at 7 seconds. Isolated thunderstorms. Scattered showers in the morning, then numerous showers in the afternoon.

TUESDAY NIGHT
Northeast winds 20 to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast 5 feet at 5 seconds and south 1 foot at 7 seconds. Isolated thunderstorms. Numerous showers, mainly in the evening.

WEDNESDAY
Northeast winds 20 to 25 knots with gusts up to 30 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 4 seconds. Isolated showers and thunderstorms.

WEDNESDAY NIGHT
Northeast winds 25 to 30 knots, diminishing to 20 to 25 knots after midnight. Seas 5 to 7 feet, occasionally to 9 feet. Isolated showers and thunderstorms in the evening.

THURSDAY
Northeast winds 20 to 25 knots. Seas 4 to 6 feet, occasionally to 8 feet. Scattered showers with isolated thunderstorms in the afternoon.

THURSDAY NIGHT
Northeast winds 20 to 25 knots, becoming east 15 to 20 knots after midnight. Seas 3 to 5 feet, occasionally to 6 feet. Scattered showers with isolated thunderstorms.

FRIDAY
East winds 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Scattered showers with isolated thunderstorms.

Winds and seas higher in and near thunderstorms.