388
FZUS52 KKEY 031508
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
1108 AM EDT Sun Aug 3 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.

GMZ005-040315-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1108 AM EDT Sun Aug 3 2025

.SYNOPSIS...A weak Atlantic surface ridge will remain nosed over
South Florida for the next few days promoting generally light
east to southeasterly breezes. Shifts to this feature`s position
through the forecast period will result in some days having
fresher breezes than others. A weak tropical wave is expected to
encroach the Keys waters by the midweek resulting in a period of
more unsettled weather.

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.

$$

GMZ031-040315-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
1108 AM EDT Sun Aug 3 2025

.THIS AFTERNOON...Southeast winds near 5 knots. Bay waters
smooth. Isolated showers and thunderstorms.
.TONIGHT...Southeast winds 5 to 10 knots, increasing to near 10
knots. Bay waters smooth to a light chop, becoming a light chop.
Isolated showers and thunderstorms.
.MONDAY...Southeast winds near 10 knots. Bay waters a light chop.
Scattered showers and isolated thunderstorms.
.MONDAY NIGHT...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...East winds 5 to 10 knots. Bay waters smooth to a
light chop. Scattered showers and thunderstorms.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Bay waters smooth to
a light chop. Scattered showers and isolated thunderstorms.
.THURSDAY...East to southeast winds 5 to 10 knots. Bay waters
smooth to a light chop. Scattered showers and isolated
thunderstorms.
.THURSDAY NIGHT...East winds 5 to 10 knots. Bay waters smooth to
a light chop. Scattered showers and isolated thunderstorms.

$$

GMZ032-035-040315-
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-
1108 AM EDT Sun Aug 3 2025

.THIS AFTERNOON...Southeast winds near 5 knots. Seas 1 foot or
less. Nearshore waters smooth. Isolated showers and thunderstorms.
.TONIGHT...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.
.MONDAY...Southeast winds 5 to 10 knots. Seas 1 foot or less.
Nearshore waters smooth to a light chop. Isolated showers and
thunderstorms.
.MONDAY NIGHT...East to southeast winds 5 to 10 knots, increasing
to near 10 knots. Seas 1 foot or less, building to around 1 foot.
Nearshore waters smooth to a light chop, becoming 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...East winds 5 to 10 knots. Seas 1 foot or less.
Nearshore waters smooth to a light chop. Scattered showers and
thunderstorms.
.WEDNESDAY NIGHT THROUGH THURSDAY NIGHT...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.

$$

GMZ042>044-040315-
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-
1108 AM EDT Sun Aug 3 2025

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

$$

GMZ052>055-072>075-040315-
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-
1108 AM EDT Sun Aug 3 2025

.THIS AFTERNOON...East to southeast winds 5 to 10 knots. Seas 1
to 2 feet. Wave Detail: East to southeast 1 foot at 4 seconds.
Isolated showers and thunderstorms.
.TONIGHT...East to southeast winds 5 to 10 knots. Seas 1 to
2 feet. Wave Detail: East to southeast 2 feet at 3 seconds.
Isolated showers and thunderstorms.
.MONDAY...East to southeast winds 5 to 10 knots. Seas 1 to
2 feet. Wave Detail: East to southeast 2 feet at 4 seconds.
Isolated showers and thunderstorms.
.MONDAY NIGHT...East to southeast winds near 10 knots, increasing
to 10 to 15 knots. Seas 1 to 3 feet. Scattered showers and
isolated thunderstorms.
.TUESDAY...East to southeast winds near 10 knots. Seas 1 to 2
feet. Scattered showers and isolated thunderstorms.
.TUESDAY NIGHT...Northeast to east winds 5 to 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 near 10 knots. Seas 1
to 2 feet. Numerous showers and isolated thunderstorms.
.THURSDAY...East winds 5 to 10 knots. Seas 1 to 2 feet. Scattered
showers and isolated thunderstorms.
.THURSDAY NIGHT...East winds near 10 knots. Seas 1 to 2 feet.
Scattered showers and isolated thunderstorms.

$$

GMZ033-034-040315-
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-
1108 AM EDT Sun Aug 3 2025

.THIS AFTERNOON...Southeast winds near 5 knots. Seas 1 foot or
less. Isolated showers and thunderstorms.
.TONIGHT...East to southeast winds near 5 knots, increasing to
5 to 10 knots. Seas 1 foot or less. Isolated showers and
thunderstorms.
.MONDAY...Southeast winds 5 to 10 knots. Seas around 1 foot. Wave
Detail: Southeast 1 foot at 3 seconds. Isolated showers and
thunderstorms.
.MONDAY NIGHT...East to southeast winds 5 to 10 knots. Seas
around 1 foot. Scattered showers and isolated thunderstorms.
.TUESDAY...East to southeast winds 5 to 10 knots. Seas around
1 foot. 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 to east winds 5 to 10 knots. Seas around 1
foot. Numerous showers and scattered thunderstorms.
.WEDNESDAY NIGHT...Northeast to east winds near 10 knots. Seas
1 to 2 feet. Numerous showers and isolated thunderstorms.
.THURSDAY...East winds 5 to 10 knots. Seas around 1 foot.
Numerous showers and isolated thunderstorms.
.THURSDAY NIGHT...East winds near 10 knots. Seas 1 to 2 feet.
Scattered showers and isolated thunderstorms.

$$