115
FZUS52 KKEY 151429
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
1029 AM EDT Tue Jul 15 2025

Florida Bay, Hawk Channel and Straits of Florida from Ocean Reef
to south of Dry Tortugas, and the extreme southeastern Gulf of
America, including The Florida Keys National Marine Sanctuary

Seas are given as significant wave height, which is the average
height of the highest 1/3 of the waves. Individual waves may be
more than twice the significant wave height.

Wave Detail will include details about the period and direction
of origin for the highest energy waves. Long-period swells coming
from a different direction than the wind would be included in the
Wave Detail.

GMZ005-160230-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1029 AM EDT Tue Jul 15 2025

.SYNOPSIS...Weak low pressure continues to become better organized
in the vicinity of the Space Coast. However, the overall pressure
pattern remains rather weak, therefore, light to gentle southeast
to south breezes are expected to continue this afternoon. In
addition, another round of showers and thunderstorms are expected
through this afternoon with the main threats being gusty winds
and confused seas near convection. As the weak low pressure shifts
off to the west and into the Gulf, high pressure will build in
behind it strengthening the pressure gradient. This will lead to
gentle to moderate breezes tonight. High pressure remains anchored
over the central Atlantic with its western periphery extending
into the Keys through the weekend with gentle to moderate east to
southeast breezes continuing, occasionally becoming moderate to
fresh.

The Approximate Shoreward Edge of the Gulf Stream as of July 15...

18 NM South of Dry Tortugas Light...on Loggerhead Key.
 3 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
 1 NM South of Sand Key Light...off Key West.
 4 NM South of Looe Key...off Big Pine Key.
 4 NM Southeast of Sombrero Key Light...off Marathon.
10 NM Southeast of Alligator Reef Light...off Islamorada.
 6 NM Southeast of Molasses Reef Light...off Key Largo.
 3 NM Southeast of Carysfort Reef Light...off Ocean Reef.

Gulf Stream Information Courtesy of the National Weather Service in
Key West based on products from NASA SPoRT.

$$

GMZ031-160230-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
1029 AM EDT Tue Jul 15 2025

.THIS AFTERNOON...Southeast to south winds 5 to 10 knots. Bay
waters smooth to a light chop. Bay waters rough and winds higher
in and around widespread showers and scattered thunderstorms.
.TONIGHT...Southeast to south winds 5 to 10 knots, becoming southeast
and increasing to 10 to 15 knots after midnight. Bay waters
smooth to a light chop, becoming a light to moderate chop.
Numerous showers and scattered thunderstorms.
.WEDNESDAY...Southeast winds near 15 knots, decreasing to near 10
knots in the afternoon. Bay waters a moderate chop, becoming a
light chop. Widespread showers and scattered thunderstorms.
.WEDNESDAY NIGHT...East to southeast winds 10 to 15 knots. Bay
waters a light to moderate chop. Scattered showers and isolated
thunderstorms.
.THURSDAY...East to southeast winds near 15 knots. Bay waters a
moderate chop. Numerous showers and isolated thunderstorms.
.THURSDAY NIGHT...East to southeast winds near 15 knots. Bay
waters a moderate chop. Isolated showers and thunderstorms.
.FRIDAY...East to southeast winds near 15 knots. Bay waters a
moderate chop. Scattered showers and isolated thunderstorms.
.FRIDAY NIGHT...East winds 10 to 15 knots. Bay waters a light to
moderate chop. Isolated showers and thunderstorms.
.SATURDAY...East winds 10 to 15 knots. Bay waters a light to
moderate chop. Scattered showers and isolated thunderstorms.
.SATURDAY NIGHT...East winds 10 to 15 knots. Bay waters a light
to moderate chop. Isolated showers and thunderstorms.

$$

GMZ032-035-160230-
Bayside and Gulfside from Craig Key to west end of Seven Mile
Bridge-
Gulf of America from west end of Seven Mile Bridge to Halfmoon
Shoal out to 5 Fathoms-
1029 AM EDT Tue Jul 15 2025

.THIS AFTERNOON...Southeast to south winds 5 to 10 knots. Seas
around 1 foot. Nearshore waters smooth to a light chop. Winds and
seas higher in and around widespread showers and scattered
thunderstorms.
.TONIGHT...Southeast to south winds 5 to 10 knots, becoming
southeast and increasing to 10 to 15 knots after midnight. Seas
around 1 foot, building to 1 to 2 feet. Nearshore waters smooth to
a light chop, becoming a light to moderate chop. Numerous showers
and scattered thunderstorms.
.WEDNESDAY...Southeast winds 10 to 15 knots, decreasing to near 10
knots. Seas 1 to 2 feet. Nearshore waters a light to moderate
chop, becoming a light chop. Numerous showers and scattered
thunderstorms.
.WEDNESDAY NIGHT...East to southeast winds 10 to 15 knots. Seas
1 to 2 feet. Nearshore waters a light to moderate chop. Scattered
showers and isolated thunderstorms.
.THURSDAY...East to southeast winds near 15 knots. Seas 1 to
2 feet, except around 2 feet west of the Marquesas Keys.
Nearshore waters a moderate chop. Scattered showers and isolated
thunderstorms.
.THURSDAY NIGHT...East to southeast winds near 15 knots. Seas
1 to 2 feet, except 2 to 3 feet west of the Marquesas Keys.
Nearshore waters a moderate chop. Scattered showers and isolated
thunderstorms.
.FRIDAY...East to southeast winds 15 to 20 knots. Seas 1 to
2 feet, except around 3 feet west of the Marquesas Keys.
Nearshore waters choppy. Scattered showers and isolated
thunderstorms.
.FRIDAY NIGHT...East winds near 15 knots. Seas 1 to 2 feet, except
2 to 3 feet west of the Marquesas Keys. Nearshore waters a
moderate chop. Scattered showers and isolated thunderstorms.
.SATURDAY...East winds 10 to 15 knots. Seas 1 to 2 feet.
Nearshore waters a light to moderate chop. Isolated showers and
thunderstorms.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas 1 to 2 feet.
Nearshore waters a light to moderate chop. Isolated showers and
thunderstorms.

$$

GMZ042>044-160230-
Hawk Channel from Ocean Reef to Craig Key out to the reef-
Hawk Channel from Craig Key to west end of Seven Mile Bridge out
to the reef-
Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal
out to the reef-
1029 AM EDT Tue Jul 15 2025

.THIS AFTERNOON...Southeast to south winds 5 to 10 knots. Seas
around 1 foot. Nearshore waters smooth to a light chop. Winds and
seas higher in and around widespread showers and scattered
thunderstorms.
.TONIGHT...Southeast winds 5 to 10 knots, increasing to 10 to 15
knots after midnight. Seas around 1 foot, building to 1 to 2
feet. Nearshore waters smooth to a light chop, becoming a light to
moderate chop. Numerous showers and scattered thunderstorms.
.WEDNESDAY...Southeast winds near 15 knots, decreasing to near 10
knots. Seas around 2 feet, subsiding to 1 to 2 feet. Nearshore
waters a moderate chop, becoming a light chop. Numerous showers
and scattered thunderstorms.
.WEDNESDAY NIGHT...East to southeast winds 10 to 15 knots,
increasing to near 15 knots. Seas around 2 feet, building to 2 to
3 feet. Nearshore waters a light to moderate chop, becoming a
moderate chop. Scattered showers and isolated thunderstorms.
.THURSDAY...East to southeast winds near 15 knots. Seas around 3
feet. Nearshore waters a moderate chop. Scattered showers and
isolated thunderstorms.
.THURSDAY NIGHT...East to southeast winds near 15 knots,
increasing to 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5
feet. Nearshore waters a moderate chop, becoming choppy.
Scattered showers and isolated thunderstorms.
.FRIDAY...East to southeast winds 15 to 20 knots, decreasing to
near 15 knots. Seas 3 to 4 feet, occasionally to 5 feet,
subsiding to 2 to 4 feet, occasionally to 5 feet. Nearshore waters
choppy, becoming a moderate chop. Scattered showers and isolated
thunderstorms.
.FRIDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.
Nearshore waters a light to moderate chop. Isolated showers and
thunderstorms.
.SATURDAY...East winds 10 to 15 knots. Seas 2 to 3 feet.
Nearshore waters a light to moderate chop. Isolated showers and
thunderstorms.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.
Nearshore waters a light to moderate chop. Isolated showers and
thunderstorms.

$$

GMZ052>055-072>075-160230-
Straits of Florida from Ocean Reef to Craig Key out 20 NM-
Straits of Florida from Craig Key to west end of Seven Mile
Bridge out 20 NM-
Straits of Florida from west end of Seven Mile Bridge to south of
Halfmoon Shoal out 20 NM-
Straits of Florida from Halfmoon Shoal to 20 NM west of Dry
Tortugas out 20 NM-
Straits of Florida from Ocean Reef to Craig Key 20 to 60 NM out-
Straits of Florida from Craig Key to west end of Seven Mile
Bridge 20 to 60 NM out-
Straits of Florida from west end of Seven Mile Bridge to south of
Halfmoon Shoal 20 to 60 NM out-
Straits of Florida from Halfmoon Shoal to 20 NM west of Dry
Tortugas 20 to 60 NM out-
1029 AM EDT Tue Jul 15 2025

.THIS AFTERNOON...Southeast to south winds 5 to 10 knots,
becoming east to southeast. Seas around 1 foot. Wave Detail: East
to southeast 1 foot at 3 seconds. Winds and seas higher in and
around numerous showers and scattered thunderstorms.
.TONIGHT...East to southeast winds 5 to 10 knots, becoming
southeast and increasing to 10 to 15 knots after midnight. Seas
around 1 foot, building to 2 to 3 feet. Wave Detail: East to
southeast 1 foot at 3 seconds, becoming east to southeast 2 feet
at 3 seconds. Numerous showers and scattered thunderstorms.
.WEDNESDAY...Southeast winds near 15 knots, becoming east to
southeast and decreasing to near 10 knots in the afternoon. Seas
2 to 3 feet. Wave Detail: East to southeast 2 feet at 4 seconds.
Numerous showers and scattered thunderstorms.
.WEDNESDAY NIGHT...East to southeast winds 10 to 15 knots,
increasing to 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5
feet. Scattered showers and isolated thunderstorms.
.THURSDAY...East to southeast winds 15 to 20 knots, decreasing to
near 15 knots. Seas 2 to 4 feet, occasionally to 5 feet.
Scattered showers and isolated thunderstorms.
.THURSDAY NIGHT...East winds 15 to 20 knots, becoming east to
southeast. Seas 3 to 5 feet, occasionally to 6 feet. Scattered
showers and isolated thunderstorms.
.FRIDAY...East to southeast winds 15 to 20 knots, decreasing to
near 15 knots. Seas 4 to 5 feet, occasionally to 6 feet.
Scattered showers and isolated thunderstorms.
.FRIDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Scattered showers and isolated
thunderstorms.
.SATURDAY...East winds 10 to 15 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Isolated showers and thunderstorms.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Scattered showers and isolated
thunderstorms.

$$

GMZ033-034-160230-
Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM
out and beyond 5 fathoms-
Gulf of America including Dry Tortugas and Rebecca Shoal Channel-
1029 AM EDT Tue Jul 15 2025

.THIS AFTERNOON...South to southwest winds near 5 knots. Seas
around 1 foot. Wave Detail: Northwest to north 1 foot at 5
seconds. Winds and seas higher in and around widespread showers
and scattered thunderstorms.
.TONIGHT...Southeast to south winds 5 to 10 knots, becoming
southeast and increasing to 10 to 15 knots after midnight. Seas
around 1 foot, building to 1 to 2 feet. Wave Detail: Southeast 2
feet at 3 seconds and northwest to north 1 foot at 5 seconds.
Numerous showers and scattered thunderstorms.
.WEDNESDAY...Southeast to south winds 10 to 15 knots, decreasing
to near 10 knots. Seas 1 to 2 feet. Wave Detail: Southeast to
south 2 feet at 3 seconds and northwest 1 foot at 4 seconds.
Widespread showers and scattered thunderstorms.
.WEDNESDAY NIGHT...East to southeast winds 10 to 15 knots,
increasing to near 15 knots. Seas 1 to 2 feet, building to around
2 feet. Scattered showers and isolated thunderstorms.
.THURSDAY...East to southeast winds 10 to 15 knots. Seas around
2 feet. Scattered showers and isolated thunderstorms.
.THURSDAY NIGHT...East to southeast winds 10 to 15 knots,
increasing to near 15 knots. Seas 2 to 3 feet. Scattered showers
and isolated thunderstorms.
.FRIDAY...East to southeast winds near 15 knots. Seas 2 to
3 feet. Scattered showers and isolated thunderstorms.
.FRIDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.
Scattered showers and isolated thunderstorms.
.SATURDAY...East to southeast winds near 10 knots. Seas 1 to 2
feet. Scattered showers and isolated thunderstorms.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas 1 to 2 feet.
Isolated showers and thunderstorms.

$$