859
FZUS52 KKEY 011452
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
1052 AM EDT Fri Aug 1 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.

GMZ005-020300-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1052 AM EDT Fri Aug 1 2025

.SYNOPSIS...A weak western arm of an Atlantic ridge will remain
across South Florida and the Keys over the next couple of days.
This will result in light broadly southeasterly breezes across
Keys waters. The ridge will lift northward into Central Florida
heading into the weekend. As a result, marine winds will nudge
upwards slightly.

The Approximate Shoreward Edge of the Gulf Stream as of July 22...

59 NM South of Dry Tortugas Light...on Loggerhead Key.
 4 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
 2 NM South of Sand Key Light...off Key West.
 5 NM South of Looe Key...off Big Pine Key.
 6 NM Southeast of Sombrero Key Light...off Marathon.
 9 NM Southeast of Alligator Reef Light...off Islamorada.
 6 NM Southeast of Molasses Reef Light...off Key Largo.
 4 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.

$$

GMZ031-020300-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
1052 AM EDT Fri Aug 1 2025

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

$$

GMZ032-035-020300-
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-
1052 AM EDT Fri Aug 1 2025

.THIS AFTERNOON...East to southeast winds 5 to 10 knots. Seas 1
foot or less. Nearshore waters smooth to a light chop. Isolated
showers and thunderstorms.
.TONIGHT...East winds 5 to 10 knots. Seas 1 foot or less.
Nearshore waters smooth to a light chop. Isolated showers and
thunderstorms.
.SATURDAY...East to southeast winds 5 to 10 knots. Seas 1 foot or
less. Nearshore waters smooth to a light chop. Isolated showers
and thunderstorms.
.SATURDAY NIGHT...East winds near 5 knots. Seas 1 foot or less.
Nearshore waters smooth. Isolated showers and thunderstorms.
.SUNDAY...East to southeast winds near 5 knots. Seas 1 foot or
less. Nearshore waters smooth. Isolated showers and
thunderstorms.
.SUNDAY NIGHT...East to southeast winds 5 to 10 knots. Seas 1
foot or less. Nearshore waters smooth to a light chop. Isolated
showers and thunderstorms.
.MONDAY...Southeast winds near 10 knots. Seas around 1 foot.
Nearshore waters a light chop. Isolated showers and thunderstorms.
.MONDAY NIGHT...East to southeast winds near 10 knots. Seas
around 1 foot. Nearshore waters a light chop. Scattered showers
and isolated thunderstorms.
.TUESDAY...Southeast winds near 10 knots. Seas around 1 foot.
Nearshore waters a light chop. Scattered showers and isolated
thunderstorms.
.TUESDAY NIGHT...East to southeast winds near 10 knots. Seas
around 1 foot. Nearshore waters a light chop. Scattered showers
and isolated thunderstorms.

$$

GMZ042>044-020300-
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-
1052 AM EDT Fri Aug 1 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 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. Isolated showers and thunderstorms.
.SATURDAY...East to southeast winds decreasing to 5 to 10 knots.
Seas subsiding to around 1 foot. Nearshore waters becoming smooth
to a light chop. Isolated showers and thunderstorms.
.SATURDAY NIGHT...East winds 5 to 10 knots. Seas around 1 foot.
Nearshore waters smooth to a light chop. Isolated showers and
thunderstorms.
.SUNDAY...East to southeast winds near 5 knots. Seas around
1 foot. Nearshore waters smooth. Isolated showers and
thunderstorms.
.SUNDAY NIGHT...East to southeast winds increasing to near 10
knots. Seas around 1 foot, building to 1 to 2 feet. Nearshore
waters becoming 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 near 10 knots. Seas 1 to
2 feet. Nearshore waters a light chop. Scattered showers and
isolated thunderstorms.
.TUESDAY...Southeast winds near 10 knots, becoming east to
southeast in the afternoon. Seas 1 to 2 feet. Nearshore waters a
light chop. Scattered showers and isolated thunderstorms.
.TUESDAY NIGHT...East to southeast winds near 10 knots. Seas 1 to
2 feet. Nearshore waters a light chop. Scattered showers and
isolated thunderstorms.

$$

GMZ052>055-072>075-020300-
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-
1052 AM EDT Fri Aug 1 2025

.THIS AFTERNOON...East winds near 10 knots. Seas 1 to 2 feet.
Wave Detail: East to southeast 2 feet at 4 seconds. Isolated
showers and thunderstorms.
.TONIGHT...East winds 10 to 15 knots. Seas 1 to 2 feet, building
to 2 to 3 feet. Wave Detail: East 2 feet at 4 seconds. Isolated
showers and thunderstorms.
.SATURDAY...East winds decreasing to 5 to 10 knots. Seas subsiding
to 1 to 2 feet. Wave Detail: East to southeast 2 feet at 4
seconds. Isolated showers and thunderstorms.
.SATURDAY NIGHT...East winds 5 to 10 knots. Seas 1 to 2 feet.
Isolated showers and thunderstorms.
.SUNDAY...East to southeast winds 5 to 10 knots. Seas 1 to 2
feet. Isolated showers and thunderstorms.
.SUNDAY NIGHT...East winds near 10 knots. Seas 1 to 2 feet.
Scattered showers and isolated thunderstorms.
.MONDAY...East to southeast winds near 10 knots. Seas 1 to
2 feet. Scattered showers and isolated thunderstorms.
.MONDAY NIGHT...East to southeast winds 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...East winds near 10 knots. Seas 1 to 2 feet.
Scattered showers and isolated thunderstorms.

$$

GMZ033-034-020300-
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-
1052 AM EDT Fri Aug 1 2025

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

$$