357
FZUS52 KKEY 041433
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
1033 AM EDT Mon Aug 4 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.

GMZ005-050245-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1033 AM EDT Mon Aug 4 2025

.SYNOPSIS...A weak Atlantic surface ridge will remain nosed over
South Florida through Tuesday night promoting light to gentle
east to southeasterly breezes. A weak tropical wave is expected to
move over the Keys waters by the midweek resulting in a period of
more unsettled weather, while breezes remain light to gentle.

The Approximate Shoreward Edge of the Gulf Stream as of August 1...

60 NM South of Dry Tortugas Light...on Loggerhead Key.
11 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
 3 NM South of Sand Key Light...off Key West.
 9 NM South of Looe Key...off Big Pine Key.
 7 NM Southeast of Sombrero Key Light...off Marathon.
 9 NM Southeast of Alligator Reef Light...off Islamorada.
 5 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.

$$

GMZ031-050245-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
1033 AM EDT Mon Aug 4 2025

.TODAY...Southeast winds 5 to 10 knots. Bay waters smooth to a
light chop. Scattered showers and isolated thunderstorms.
.TONIGHT...East to southeast winds 5 to 10 knots. Bay waters
smooth to a light chop. Scattered showers and isolated
thunderstorms.
.TUESDAY...East to southeast winds 5 to 10 knots. Bay waters
smooth to a light chop. Scattered showers and isolated
thunderstorms.
.TUESDAY NIGHT...Northeast to east winds 5 to 10 knots. Bay
waters smooth to a light chop. Scattered showers and isolated
thunderstorms.
.WEDNESDAY...Northeast to east winds 5 to 10 knots. Bay waters
smooth to a light chop. Scattered showers and thunderstorms.
.WEDNESDAY NIGHT...Northeast to east winds 5 to 10 knots. Bay
waters smooth to a light chop. Scattered showers and isolated
thunderstorms.
.THURSDAY...East winds near 5 knots. Bay waters smooth. Scattered
showers and isolated thunderstorms.
.THURSDAY NIGHT THROUGH FRIDAY NIGHT...East winds 5 to 10 knots.
Bay waters smooth to a light chop. Scattered showers and isolated
thunderstorms.

$$

GMZ032-035-050245-
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-
1033 AM EDT Mon Aug 4 2025

.TODAY...Southeast winds to 5 to 10 knots. Seas around 1 foot.
Nearshore waters mooth to a light chop. Isolated showers and
thunderstorms.
.TONIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or less.
Nearshore waters smooth to a light chop. Scattered showers and
isolated thunderstorms.
.TUESDAY...East to southeast winds 5 to 10 knots. Seas 1 foot or
less. Nearshore waters smooth to a light chop. Scattered showers
and isolated thunderstorms.
.TUESDAY NIGHT...Northeast to east winds near 10 knots. Seas
around 1 foot. Nearshore waters a light chop. Scattered showers
and isolated thunderstorms.
.WEDNESDAY...Northeast to east winds 5 to 10 knots. Seas 1 foot
or less. Nearshore waters smooth to a light chop. Scattered
showers and thunderstorms.
.WEDNESDAY NIGHT...Northeast to east winds 5 to 10 knots. Seas
1 foot or less. Nearshore waters smooth to a light chop.
Scattered showers and isolated thunderstorms.
.THURSDAY...East winds 5 to 10 knots. Seas 1 foot or less.
Nearshore waters smooth to a light chop. Scattered showers and
isolated thunderstorms.
.THURSDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less.
Nearshore waters smooth to a light chop. Scattered showers and
isolated thunderstorms.
.FRIDAY AND FRIDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1
foot or less. Nearshore waters smooth to a light chop. Scattered
showers and isolated thunderstorms.

$$

GMZ042>044-050245-
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-
1033 AM EDT Mon Aug 4 2025

.TODAY...Southeast winds 5 to 10 knots. Seas 1 to 2 feet.
Nearshore waters smooth to a light chop. Isolated showers and
thunderstorms.
.TONIGHT...East to southeast winds near 10 knots. Seas 1 to
2 feet. Nearshore waters a light chop. Scattered showers and
isolated thunderstorms.
.TUESDAY...East to southeast winds 5 to 10 knots. Seas around
1 foot. Nearshore waters smooth to a light chop. Scattered
showers and isolated thunderstorms.
.TUESDAY NIGHT...Northeast to east winds 5 to 10 knots. Seas
around 1 foot. Nearshore waters smooth to a light chop. Scattered
showers and isolated thunderstorms.
.WEDNESDAY...Northeast to east winds 5 to 10 knots. Seas around
1 foot. Nearshore waters smooth to a light chop. Scattered
showers and thunderstorms.
.WEDNESDAY NIGHT...Northeast to east winds near 10 knots. Seas
1 to 2 feet. Nearshore waters a light chop. Scattered showers and
isolated thunderstorms.
.THURSDAY...East winds 5 to 10 knots. Seas around 1 foot.
Nearshore waters smooth to a light chop. Scattered showers and
isolated thunderstorms.
.THURSDAY NIGHT...East winds 5 to 10 knots. Seas around 1 foot.
Nearshore waters smooth to a light chop. Scattered showers and
isolated thunderstorms.
.FRIDAY...Southeast winds 5 to 10 knots. Seas around 1 foot.
Nearshore waters smooth to a light chop. Scattered showers and
isolated thunderstorms.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots, increasing to near
10 knots. Seas around 1 foot. Nearshore waters smooth to a light
chop, becoming a light chop. Scattered showers and isolated
thunderstorms.

$$

GMZ052>055-072>075-050245-
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-
1033 AM EDT Mon Aug 4 2025

.TODAY...Southeast winds near 10 knots. Seas 1 to 3 feet. Wave
Detail: East to southeast 2 feet at 4 seconds. Isolated showers
and thunderstorms.
.TONIGHT...East to southeast winds near 10 knots, increasing to 10
to 15 knots. Seas 1 to 3 feet. Wave Detail: East to southeast 2
feet at 4 seconds. Scattered showers and isolated thunderstorms.
.TUESDAY...East to southeast winds near 10 knots. Seas 1 to 2
feet. Wave Detail: East to southeast 2 feet at 4 seconds.
Scattered showers and isolated thunderstorms.
.TUESDAY NIGHT...Northeast to east winds near 10 knots. Seas 1 to
2 feet. Scattered showers and isolated thunderstorms.
.WEDNESDAY...Northeast to east winds 5 to 10 knots. Seas 1 to
2 feet. Scattered showers and thunderstorms.
.WEDNESDAY NIGHT...Northeast to east winds 5 to 10 knots. Seas
1 to 2 feet. Scattered showers and isolated thunderstorms.
.THURSDAY...East winds 5 to 10 knots. Seas 1 to 2 feet. Scattered
showers and isolated thunderstorms.
.THURSDAY NIGHT...Northeast to east winds 5 to 10 knots. Seas 1
to 2 feet. Scattered showers and isolated thunderstorms.
.FRIDAY...Southeast winds 5 to 10 knots. Seas 1 to 2 feet.
Scattered showers and isolated thunderstorms.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots, increasing to near
10 knots. Seas 1 to 2 feet. Scattered showers and isolated
thunderstorms.

$$

GMZ033-034-050245-
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-
1033 AM EDT Mon Aug 4 2025

.TODAY...Southeast winds 5 to 10 knots. Seas around 1 foot. Wave
Detail: Southeast 1 foot at 3 seconds. Isolated showers and
thunderstorms.
.TONIGHT...Southeast winds 5 to 10 knots. Seas around 1 foot.
Wave Detail: East to southeast 1 foot at 3 seconds. Scattered
showers and isolated thunderstorms.
.TUESDAY...East to southeast winds 5 to 10 knots. Seas around
1 foot. Wave Detail: Southeast 1 foot at 3 seconds. Scattered
showers and isolated thunderstorms.
.TUESDAY NIGHT...Northeast to east winds 5 to 10 knots. Seas
around 1 foot. Scattered showers and isolated thunderstorms.
.WEDNESDAY...Northeast winds 5 to 10 knots. Seas around 1 foot.
Scattered showers and thunderstorms.
.WEDNESDAY NIGHT...Northeast to east winds near 10 knots. Seas
1 to 2 feet. Scattered showers and isolated thunderstorms.
.THURSDAY...Northeast to east winds 5 to 10 knots. Seas around 1
foot. Numerous showers and isolated thunderstorms.
.THURSDAY NIGHT...East to southeast winds 5 to 10 knots. Seas
around 1 foot. Scattered showers and isolated thunderstorms.
.FRIDAY...Southeast to south winds 5 to 10 knots. Seas around 1
foot. Scattered showers and isolated thunderstorms.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots, increasing to near
10 knots. Seas building to 1 to 2 feet. Scattered showers and
isolated thunderstorms.

$$