599
FZUS52 KKEY 121428
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
1028 AM EDT Sat Jul 12 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.

GMZ005-130230-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1028 AM EDT Sat Jul 12 2025

.SYNOPSIS...Outflow boundaries will surge across the Florida Keys
coastal waters early this morning. These boundaries will produce
sudden, gusty, erratic winds. Outside of these boundaries,
sprawling high pressure in the North Atlantic will support light
to gentle east to southeast breezes through early next week. Near-
normal rain and thunder chances are expected through the weekend.
A disturbance off the Southeast is expected to dive southwestward
towards the Florida Peninsula for early next week, supporting
bouts of increased storm chances.

The Approximate Shoreward Edge of the Gulf Stream as of July 8...

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

$$

GMZ031-130230-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
1028 AM EDT Sat Jul 12 2025

.THIS AFTERNOON...Southeast winds near 10 knots. Bay waters 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.
.SUNDAY...East to southeast winds 5 to 10 knots. Bay waters
smooth to a light chop. Scattered showers and isolated
thunderstorms.
.SUNDAY NIGHT...East to southeast winds 5 to 10 knots. Bay waters
smooth to a light chop. Scattered showers and isolated
thunderstorms.
.MONDAY...East to southeast winds near 5 knots. Bay waters
smooth. Scattered showers and isolated thunderstorms.
.MONDAY NIGHT...East to southeast winds near 5 knots. Bay waters
smooth. Scattered showers and isolated thunderstorms.
.TUESDAY...East to southeast winds near 5 knots. Bay waters
smooth. Scattered showers and isolated thunderstorms.
.TUESDAY NIGHT...East to southeast winds 5 to 10 knots. Bay
waters smooth to a light chop. Scattered showers and isolated
thunderstorms.
.WEDNESDAY...Southeast to south winds near 10 knots. Bay waters a
light chop. Scattered showers and isolated thunderstorms.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters a
light to moderate chop. Scattered showers and isolated
thunderstorms.

$$

GMZ032-035-130230-
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-
1028 AM EDT Sat Jul 12 2025

.THIS AFTERNOON...Southeast winds near 10 knots. Seas around 1
foot. Nearshore waters a light chop. Scattered showers and
isolated thunderstorms.
.TONIGHT...East to southeast winds near 10 knots, decreasing to 5
to 10 knots. Seas around 1 foot. Nearshore waters a light chop,
becoming smooth to a light chop. Scattered showers and isolated
thunderstorms.
.SUNDAY AND SUNDAY 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.
.MONDAY...East to southeast winds near 5 knots. Seas 1 foot or
less. Nearshore waters smooth. Scattered showers and isolated
thunderstorms.
.MONDAY NIGHT...East to southeast winds near 5 knots. Seas 1 foot
or less. Nearshore waters smooth. Scattered showers and isolated
thunderstorms.
.TUESDAY...East to southeast winds near 5 knots. Seas 1 foot or
less. Nearshore waters smooth. Scattered showers and isolated
thunderstorms.
.TUESDAY NIGHT...East to southeast winds 5 to 10 knots. Seas
around 1 foot. Nearshore waters smooth to a light chop. Scattered
showers and isolated thunderstorms.
.WEDNESDAY...Southeast to south winds near 10 knots. Seas 1 to
2 feet. Nearshore waters a light chop. Scattered showers and
isolated thunderstorms.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 1 to 2
feet. Nearshore waters a light to moderate chop. Scattered
showers and isolated thunderstorms.

$$

GMZ042>044-130230-
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-
1028 AM EDT Sat Jul 12 2025

.THIS AFTERNOON...Southeast winds near 10 knots. Seas 1 to 2
feet. Nearshore waters a light chop. Scattered showers and
isolated thunderstorms.
.TONIGHT...East to southeast winds near 10 knots. Seas
1 to 2 feet. Nearshore waters a light chop. Scattered showers and
isolated thunderstorms.
.SUNDAY AND SUNDAY NIGHT...East to southeast winds 5 to 10 knots.
Seas around 1 foot. Nearshore waters smooth to a light chop.
Scattered showers and isolated thunderstorms.
.MONDAY...East to southeast winds near 5 knots. Seas around 1
foot. Nearshore waters smooth. Scattered showers and isolated
thunderstorms.
.MONDAY NIGHT...East to southeast winds near 5 knots.
Seas around 1 foot. Nearshore waters smooth. Scattered showers
and isolated thunderstorms.
.TUESDAY...South winds 5 to 10 knots. Seas around 1 foot.
Nearshore waters smooth to a light chop. Scattered showers and
isolated thunderstorms.
.TUESDAY NIGHT...Southeast to south winds 5 to 10 knots. Seas
around 1 foot. Nearshore waters smooth to a light chop. Scattered
showers and isolated thunderstorms.
.WEDNESDAY...Southeast to south winds near 10 knots. Seas 1 to 2
feet. Nearshore waters a light chop. Scattered showers and
isolated thunderstorms.
.WEDNESDAY NIGHT...Southeast winds increasing to 10 to 15 knots.
Seas 1 to 2 feet. Nearshore waters becoming a light to moderate
chop. Scattered showers and isolated thunderstorms.

$$

GMZ052>055-072>075-130230-
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-
1028 AM EDT Sat Jul 12 2025

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

$$

GMZ033-034-130230-
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-
1028 AM EDT Sat Jul 12 2025

.THIS AFTERNOON...Southeast winds near 10 knots. Seas 1 to 2
feet. Wave Detail: Southeast 1 foot at 3 seconds. Scattered
showers and isolated thunderstorms.
.TONIGHT...East to southeast winds near 10 knots. Seas 1 to 2
feet, subsiding to around 1 foot. Wave Detail: East 1 foot at 3
seconds. Scattered showers and isolated thunderstorms.
.SUNDAY...East to southeast winds 5 to 10 knots. Seas around 1
foot. Scattered showers and isolated thunderstorms.
.SUNDAY NIGHT...East to southeast winds near 5 knots. Seas around 1
foot. Scattered showers and isolated thunderstorms.
.MONDAY...East to southeast winds near 5 knots. Seas around 1
foot. Scattered showers and isolated thunderstorms.
.MONDAY NIGHT...Variable winds near 5 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...Southeast to south winds 5 to 10 knots. Seas
1 to 2 feet. Scattered showers and isolated thunderstorms.
.WEDNESDAY...East to southeast winds near 10 knots. Seas 1 to 2
feet. Scattered showers and isolated thunderstorms.
.WEDNESDAY NIGHT...East to southeast winds 10 to 15 knots. Seas 1
to 2 feet. Scattered showers and isolated thunderstorms.

$$