NDBC has recently revised the NDBC Handbook of Automated Data Quality Control Checks and Procedures. The new document can be found on our Publications page.
National Weather Service Marine Forecast FZUS52 KTBW
FZUS52 KTBW 041841
CWFTBW
Coastal Waters Forecast for Florida
National Weather Service Tampa Bay Ruskin FL
241 PM EDT Fri Apr 4 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.
GMZ800-050715
Synopsis for the coastal waters from Bonita Beach to Suwannee River
241 PM EDT Fri Apr 4 2025
SYNOPSIS
Strong high pressure remains in control through the remainder of the week and into the weekend with seas up to 4 ft and winds out of the southeast generally less than 15 kts, though some brief periods of small craft exercise caution could occur at times. Seas will increase to around 5 ft by early next week as a cold front moves through the area Monday night. Ahead of the front, wind shift to the southwest before eventually becoming northerly by Tuesday and a line of showers and thunderstorms will accompany the frontal boundary and move from north to south across the Gulf waters before tapering off into Tuesday afternoon.
&&
GMZ830-050715
Tampa Bay waters
241 PM EDT Fri Apr 4 2025
TONIGHT
Southwest winds 5 to 10 knots, becoming southeast late
this evening and early morning, then increasing to 10 to 15 knots
late. Bay and inland waters a moderate chop.
SATURDAY
Southeast winds 10 to 15 knots, becoming south in the
afternoon. Bay and inland waters a moderate chop.
SATURDAY NIGHT
South winds 10 to 15 knots, becoming southeast
after midnight. Bay and inland waters a moderate chop.
SUNDAY
South winds 10 to 15 knots with gusts up to 20 knots.
Bay and inland waters a moderate chop.
SUNDAY NIGHT
South winds 10 to 15 knots. Bay and inland waters
a moderate chop.
MONDAY
South winds 15 to 20 knots with gusts up to 25 knots.
Bay and inland waters choppy. A slight chance of thunderstorms. A
slight chance of showers in the morning, then a chance of showers
in the afternoon.
MONDAY NIGHT
West winds 10 to 15 knots. Bay and inland waters
a moderate chop. A slight chance of thunderstorms. Showers.
TUESDAY
Northwest winds 10 to 15 knots. Bay and inland waters
a moderate chop. A slight chance of thunderstorms. Showers,
mainly in the morning.
TUESDAY NIGHT
North winds 10 to 15 knots. Bay and inland
waters a moderate chop. A slight chance of showers and
thunderstorms in the evening.
WEDNESDAY
North winds 10 to 15 knots. Bay and inland waters a
moderate chop.
Winds and waves higher in and near thunderstorms.
GMZ836-050715
Charlotte Harbor and Pine Island Sound
241 PM EDT Fri Apr 4 2025
TONIGHT
South winds around 10 knots, becoming southeast late
this evening and overnight. Bay and inland waters a moderate
chop.
SATURDAY
Southeast winds 10 to 15 knots, becoming south in the
afternoon. Bay and inland waters a moderate chop.
SATURDAY NIGHT
Southeast winds 10 to 15 knots. Bay and inland
waters a moderate chop.
SUNDAY
South winds 10 to 15 knots with gusts up to 20 knots.
Bay and inland waters a moderate chop.
SUNDAY NIGHT
South winds 10 to 15 knots. Bay and inland waters
a moderate chop.
MONDAY
South winds 10 to 15 knots with gusts up to 20 knots.
Bay and inland waters a moderate chop. A slight chance of showers
and thunderstorms.
MONDAY NIGHT
Southwest winds 10 to 15 knots. Bay and inland
waters a moderate chop. A slight chance of thunderstorms. A
chance of showers in the evening, then showers likely after
midnight.
TUESDAY
Northwest winds 10 to 15 knots. Bay and inland waters
a moderate chop. Showers likely with a slight chance of
thunderstorms.
TUESDAY NIGHT
North winds 10 to 15 knots. Bay and inland
waters a moderate chop. A slight chance of thunderstorms. A
chance of showers, mainly in the evening.
WEDNESDAY
North winds 10 to 15 knots. Bay and inland waters a
moderate chop.
Winds and waves higher in and near thunderstorms.
GMZ856-050715
Coastal waters from Bonita Beach to Englewood FL out 20 NM
241 PM EDT Fri Apr 4 2025
TONIGHT
Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: South 3 feet at 6 seconds. Bay and inland waters a
moderate chop.
SATURDAY
Southeast winds 10 to 15 knots with gusts up to
20 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at
6 seconds. Bay and inland waters a moderate chop.
SATURDAY NIGHT
Southeast winds around 15 knots with gusts up
to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave
Detail: South 3 feet at 6 seconds. Bay and inland waters a
moderate chop.
SUNDAY
Southeast winds 10 to 15 knots with gusts up to
20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail:
South 3 feet at 6 seconds. Bay and inland waters a moderate chop.
SUNDAY NIGHT
South winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: South 3 feet at 5 seconds. Bay and inland waters a
moderate chop.
MONDAY
South winds 10 to 15 knots with gusts up to 20 knots.
Seas 2 to 3 feet. Wave Detail: South 3 feet at 4 seconds and
southwest 2 feet at 7 seconds. Bay and inland waters a moderate
chop. A slight chance of showers and thunderstorms.
MONDAY NIGHT
Southwest winds 10 to 15 knots. Seas 2 to 3 feet.
Bay and inland waters a moderate chop. A slight chance of
thunderstorms. A chance of showers in the evening, then showers
after midnight.
TUESDAY
Northwest winds around 15 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Bay and inland waters a moderate chop. A
slight chance of thunderstorms. Showers.
TUESDAY NIGHT
North winds around 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Bay and inland waters a moderate chop. A
slight chance of thunderstorms. A chance of showers, mainly in
the evening.
WEDNESDAY
North winds 10 to 15 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Bay and inland waters a moderate chop.
Winds and seas higher in and near thunderstorms.
GMZ876-050715
Waters from Bonita Beach to Englewood FL out 20 to 60 NM
241 PM EDT Fri Apr 4 2025
TONIGHT
Southeast winds 10 to 15 knots, increasing to 15 to
20 knots after midnight. Seas 3 to 4 feet, occasionally to
5 feet. Wave Detail: Southeast 4 feet at 7 seconds and southeast
1 foot at 4 seconds.
SATURDAY
Southeast winds around 15 knots with gusts up to
20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail:
Southeast 4 feet at 7 seconds and southeast 1 foot at 4 seconds.
SATURDAY NIGHT
Southeast winds 15 to 20 knots. Seas 3 to
4 feet, occasionally to 5 feet. Wave Detail: South 4 feet at
7 seconds and south 1 foot at 4 seconds.
SUNDAY
Southeast winds 10 to 15 knots with gusts up to
20 knots. Seas around 4 feet, occasionally to 5 feet. Wave
Detail: Southeast 4 feet at 5 seconds.
SUNDAY NIGHT
South winds around 10 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: South 4 feet at 7 seconds
and southeast 1 foot at 4 seconds.
MONDAY
South winds 10 to 15 knots with gusts up to 20 knots.
Seas around 3 feet. Wave Detail: South 3 feet at 6 seconds. A
slight chance of showers and thunderstorms.
MONDAY NIGHT
Southwest winds 10 to 15 knots. Seas 2 to 4 feet,
occasionally to 5 feet. A slight chance of thunderstorms.
Showers.
TUESDAY
Northwest winds around 15 knots. Seas 3 to 5 feet,
occasionally to 6 feet. A slight chance of thunderstorms.
Showers.
TUESDAY NIGHT
North winds around 15 knots. Seas 4 to 5 feet,
occasionally to 6 feet. A slight chance of thunderstorms. A
chance of showers, mainly in the evening.
WEDNESDAY
North winds 10 to 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet.
Winds and seas higher in and near thunderstorms.
GMZ853-050715
Coastal waters from Englewood to Tarpon Springs FL out 20 NM
241 PM EDT Fri Apr 4 2025
TONIGHT
South winds 5 to 10 knots, becoming southeast late
this evening, then increasing to 10 to 15 knots with gusts up to
20 knots after midnight. Seas 2 to 3 feet. Wave Detail: South
3 feet at 7 seconds and southeast 2 feet at 3 seconds. Bay and
inland waters a moderate chop.
SATURDAY
Southeast winds 10 to 15 knots with gusts up to
20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail:
South 3 feet at 7 seconds and southeast 2 feet at 4 seconds. Bay
and inland waters a moderate chop.
SATURDAY NIGHT
South winds 10 to 15 knots with gusts up to
20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail:
South 3 feet at 5 seconds. Bay and inland waters a moderate chop.
SUNDAY
South winds around 15 knots with gusts up to 20 knots.
Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: South
4 feet at 5 seconds. Bay and inland waters a moderate chop.
SUNDAY NIGHT
South winds 10 to 15 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Wave Detail: South 3 feet at 5 seconds.
Bay and inland waters a moderate chop.
MONDAY
South winds 15 to 20 knots with gusts up to 25 knots.
Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: South
3 feet at 6 seconds. Bay and inland waters choppy. A slight
chance of thunderstorms. A slight chance of showers in the
morning, then a chance of showers in the afternoon.
MONDAY NIGHT
Southwest winds around 15 knots, becoming
northwest after midnight. Seas 3 to 4 feet, occasionally to
5 feet. Bay and inland waters a moderate chop. Showers with a
slight chance of thunderstorms.
TUESDAY
Northwest winds around 15 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Bay and inland waters a moderate chop. A
slight chance of thunderstorms. Showers, mainly in the morning.
TUESDAY NIGHT
North winds around 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Bay and inland waters a moderate chop. A
slight chance of showers and thunderstorms in the evening.
WEDNESDAY
North winds 10 to 15 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Bay and inland waters a moderate chop.
Winds and seas higher in and near thunderstorms.
GMZ873-050715
Waters from Englewood to Tarpon Springs FL out 20 to 60 NM
241 PM EDT Fri Apr 4 2025
TONIGHT
South winds 5 to 10 knots, becoming southeast 10 to
15 knots with gusts up to 20 knots late this evening and
overnight. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail:
South 4 feet at 7 seconds and southeast 1 foot at 3 seconds.
SATURDAY
Southeast winds 10 to 15 knots with gusts up to
20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail:
South 4 feet at 7 seconds and southeast 1 foot at 4 seconds.
SATURDAY NIGHT
South winds 10 to 15 knots with gusts up to
25 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail:
South 4 feet at 7 seconds and south 1 foot at 3 seconds.
SUNDAY
Southeast winds around 15 knots with gusts up to
20 knots. Seas around 4 feet, occasionally to 5 feet. Wave
Detail: South 4 feet at 5 seconds.
SUNDAY NIGHT
South winds 10 to 15 knots with gusts up to
20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail:
South 4 feet at 7 seconds.
MONDAY
South winds around 15 knots with gusts up to 20 knots.
Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: South
4 feet at 6 seconds. A chance of showers with a slight chance of
thunderstorms.
MONDAY NIGHT
West winds around 15 knots, becoming northwest
after midnight. Seas 3 to 5 feet, occasionally to 6 feet. Showers
with a slight chance of thunderstorms.
TUESDAY
North winds around 15 knots. Seas 4 to 5 feet,
occasionally to 6 feet. A slight chance of thunderstorms.
Showers, mainly in the morning.
TUESDAY NIGHT
North winds around 15 knots. Seas 4 to 5 feet,
occasionally to 6 feet. A slight chance of showers and
thunderstorms in the evening.
WEDNESDAY
North winds 10 to 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet.
Winds and seas higher in and near thunderstorms.
GMZ850-050715
Coastal waters from Tarpon Springs to Suwannee River FL out 20 NM
241 PM EDT Fri Apr 4 2025
TONIGHT
West winds around 5 knots, becoming east late this
evening and early morning, then becoming southeast late. Seas
1 to 2 feet. Wave Detail: Southwest 1 foot at 7 seconds. Bay and
inland waters light chop.
SATURDAY
Southeast winds around 10 knots, becoming south in
the afternoon. Seas around 2 feet. Wave Detail: Southeast 1 foot
at 3 seconds and southwest 1 foot at 7 seconds. Bay and inland
waters light chop.
SATURDAY NIGHT
Southwest winds 5 to 10 knots, becoming
southeast after midnight. Seas around 2 feet. Wave Detail:
Southwest 2 feet at 7 seconds and southwest 1 foot at 3 seconds.
Bay and inland waters light chop.
SUNDAY
South winds 10 to 15 knots with gusts up to 20 knots.
Seas 2 to 3 feet. Wave Detail: South 3 feet at 7 seconds and
south 2 feet at 3 seconds. Bay and inland waters a moderate chop.
SUNDAY NIGHT
South winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: Southwest 3 feet at 5 seconds. Bay and inland waters
a moderate chop. A slight chance of showers and thunderstorms
after midnight.
MONDAY
South winds 10 to 15 knots, becoming southwest 15 to
20 knots in the afternoon. Seas 2 to 4 feet, occasionally to
5 feet. Wave Detail: South 3 feet at 4 seconds and southwest
3 feet at 8 seconds. Bay and inland waters choppy. A slight
chance of thunderstorms. A chance of showers in the morning, then
showers likely in the afternoon.
MONDAY NIGHT
West winds 15 to 20 knots, becoming northwest
10 to 15 knots after midnight. Seas 2 to 4 feet, occasionally to
5 feet. Bay and inland waters choppy. Showers with a slight
chance of thunderstorms.
TUESDAY
North winds 10 to 15 knots. Seas 2 to 3 feet. Bay and
inland waters a moderate chop. A slight chance of thunderstorms.
A chance of showers, mainly in the morning.
TUESDAY NIGHT
North winds 10 to 15 knots. Seas 2 to 3 feet.
Bay and inland waters a moderate chop.
WEDNESDAY
North winds 10 to 15 knots. Seas 2 to 3 feet. Bay
and inland waters a moderate chop.
Winds and seas higher in and near thunderstorms.
GMZ870-050715
Waters from Tarpon Springs to Suwannee River FL out 20 to 60 NM
241 PM EDT Fri Apr 4 2025
TONIGHT
South winds around 5 knots, becoming southeast late
this evening and overnight. Seas 2 to 3 feet. Wave Detail: South
3 feet at 6 seconds.
SATURDAY
Southeast winds 10 to 15 knots with gusts up to
20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail:
South 3 feet at 7 seconds and southeast 1 foot at 3 seconds.
SATURDAY NIGHT
South winds 10 to 15 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Wave Detail: South 3 feet at 7 seconds.
SUNDAY
South winds around 15 knots with gusts up to 20 knots.
Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: South
4 feet at 7 seconds and south 1 foot at 4 seconds.
SUNDAY NIGHT
South winds 10 to 15 knots with gusts up to
20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail:
South 4 feet at 5 seconds. A slight chance of showers and
thunderstorms after midnight.
MONDAY
Southwest winds around 15 knots with gusts up to
20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail:
South 4 feet at 7 seconds and south 2 feet at 4 seconds. A slight
chance of thunderstorms. A chance of showers in the morning, then
showers likely in the afternoon.
MONDAY NIGHT
Northwest winds around 15 knots with gusts up to
20 knots. Seas 4 to 5 feet, occasionally to 6 feet. Showers with
a slight chance of thunderstorms.
TUESDAY
North winds 10 to 15 knots. Seas 3 to 5 feet,
occasionally to 6 feet. A slight chance of thunderstorms. Showers
likely, mainly in the morning.
TUESDAY NIGHT
North winds around 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet.
WEDNESDAY
Northeast winds 10 to 15 knots. Seas 2 to 3 feet.
Winds and seas higher in and near thunderstorms.