354
FZUS52 KKEY 240823
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
423 AM EDT Tue Jun 24 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.

GMZ005-242030-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
423 AM EDT Tue Jun 24 2025

.SYNOPSIS...High pressure will remain dominant over the Florida
Keys coastal waters through Wednesday, allowing for mainly
gentle to moderate easterly breezes. A tropical wave will
approach the Keys late Wednesday and Thursday. This feature, in
tandem with a retrograding upper-level low moving southwestward
towards the Florida Peninsula, will support enhanced rain and
thunder chances for Wednesday night through Thursday night. Gentle
to moderate east to southeast breezes, along with drier conditions,
are expected for late Friday through the weekend.

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

16 NM Southwest of Dry Tortugas Light...on Loggerhead Key.
21 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
28 NM South of Sand Key Light...off Key West.
36 NM South of Looe Key...off Big Pine Key.
22 NM South of Sombrero Key Light...off Marathon.
12 NM Southeast of Alligator Reef Light...off Islamorada.
 6 NM Southeast of Molasses Reef Light...off Key Largo.
 3 NM East 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.

$$

GMZ031-242030-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
423 AM EDT Tue Jun 24 2025

.TODAY...Northeast to east winds near 15 knots. Bay waters a
moderate chop. Scattered showers and isolated thunderstorms.
.TONIGHT...Northeast to east winds near 15 knots, decreasing to
10 to 15 knots. Bay waters a moderate chop, becoming a light to
moderate chop. Scattered showers and isolated thunderstorms.
.WEDNESDAY...East winds 10 to 15 knots. Bay waters a light to
moderate chop. Scattered showers and isolated thunderstorms.
.WEDNESDAY NIGHT...East to southeast winds 10 to 15 knots,
becoming southeast to south and decreasing to 5 to 10 knots. Bay
waters a light to moderate chop, becoming smooth to a light chop.
Scattered showers and isolated thunderstorms.
.THURSDAY...Southeast to south winds 5 to 10 knots. Bay waters
smooth to a light chop. Scattered showers and isolated
thunderstorms.
.THURSDAY NIGHT AND FRIDAY...East to southeast winds near 10
knots. Bay waters a light chop. Scattered showers and isolated
thunderstorms.
.FRIDAY NIGHT...East to southeast winds 10 to 15 knots. Bay
waters a light to moderate chop. Scattered showers and isolated
thunderstorms.
.SATURDAY AND SATURDAY NIGHT...East to southeast winds 10 to 15
knots. Bay waters a light to moderate chop. Isolated showers and
thunderstorms.

$$

GMZ032-035-242030-
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-
423 AM EDT Tue Jun 24 2025

.TODAY...Northeast to 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.
.TONIGHT...Northeast to east winds near 15 knots, decreasing to
10 to 15 knots. Seas 1 to 2 feet, except 2 to 3 feet west of the
Marquesas Keys. Nearshore waters a moderate chop, becoming a
light to moderate chop. Scattered showers and isolated
thunderstorms.
.WEDNESDAY...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.
.WEDNESDAY NIGHT...East to southeast winds 10 to 15 knots,
becoming southeast to south and decreasing to 5 to 10 knots.
Seas 1 to 2 feet, subsiding to around 1 foot. Nearshore waters a
light to moderate chop, becoming smooth to a light chop. Scattered
showers and isolated thunderstorms.
.THURSDAY...Southeast to south winds 5 to 10 knots. Seas around 1
foot. Nearshore waters smooth to a light chop. Scattered showers
and isolated thunderstorms.
.THURSDAY NIGHT AND FRIDAY..East to southeast winds near 10
knots. Seas around 1 foot. Nearshore waters a light chop.
Scattered showers and isolated thunderstorms.
.FRIDAY 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.
.SATURDAY AND SATURDAY NIGHT...East to southeast winds 10 to 15
knots. Seas 1 to 2 feet, except 2 to 3 feet west of the Marquesas
Keys. Nearshore waters a light to moderate chop. Isolated showers
and thunderstorms.

$$

GMZ042>044-242030-
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-
423 AM EDT Tue Jun 24 2025

.TODAY...Northeast to east winds near 15 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Nearshore waters a moderate chop.
Scattered showers and isolated thunderstorms.
.TONIGHT...Northeast to east winds 15 to 20 knots, becoming east
and decreasing to 10 to 15 knots. Seas 3 to 4 feet, occasionally
to 5 feet, subsiding to 2 to 3 feet. Nearshore waters choppy,
becoming a light to moderate chop. Scattered showers and isolated
thunderstorms.
.WEDNESDAY...East winds 10 to 15 knots. Seas around 2 feet.
Nearshore waters a light to moderate chop. Scattered showers and
isolated thunderstorms.
.WEDNESDAY NIGHT...East to southeast winds 10 to 15 knots,
becoming southeast to south and decreasing to 5 to 10 knots. Seas
around 2 feet, subsiding to 1 to 2 feet. Nearshore waters a light
to moderate chop, becoming smooth to a light chop. Scattered
showers and isolated thunderstorms.
.THURSDAY...Southeast to south winds 5 to 10 knots. Seas 1 to 2
feet. Nearshore waters smooth to a light chop. Scattered showers
and isolated thunderstorms.
.THURSDAY NIGHT...Southeast winds near 10 knots. Seas 1 to
2 feet. Nearshore waters a light chop. Scattered showers and
isolated thunderstorms.
.FRIDAY...East to southeast winds near 10 knots, increasing to 10
to 15 knots. Seas 1 to 2 feet, building to around 2 feet.
Nearshore waters a light chop, becoming a light to moderate chop.
Scattered showers and isolated thunderstorms.
.FRIDAY NIGHT...East to southeast winds 10 to 15 knots. Seas 2 to
3 feet. Nearshore waters a light to moderate chop. Scattered
showers and isolated thunderstorms.
.SATURDAY AND SATURDAY NIGHT...East to southeast winds 10 to 15
knots. Seas 2 to 3 feet. Nearshore waters a light to moderate
chop. Isolated showers and thunderstorms.

$$

GMZ052>055-072>075-242030-
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-
423 AM EDT Tue Jun 24 2025

...SMALL CRAFT SHOULD EXERCISE CAUTION...

.TODAY...Northeast to east winds 15 to 20 knots. Seas 3 to 5
feet, occasionally to 6 feet. Wave Detail: East 5 feet at 6
seconds. Scattered showers and isolated thunderstorms.
.TONIGHT...East winds 15 to 20 knots, decreasing to 10 to 15
knots. Seas 3 to 5 feet, occasionally to 6 feet, subsiding to 3
to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 5
seconds. Scattered showers and isolated thunderstorms.
.WEDNESDAY...East winds 10 to 15 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Wave Detail: East 3 feet at 5 seconds.
Scattered showers and isolated thunderstorms.
.WEDNESDAY NIGHT...East to southeast winds 10 to 15 knots,
becoming southeast to south and decreasing to 5 to 10 knots. Seas
2 to 3 feet, subsiding to around 2 feet. Scattered showers and
isolated thunderstorms.
.THURSDAY...Southeast to south winds 5 to 10 knots, increasing to
near 10 knots. Seas 1 to 2 feet. Scattered showers and isolated
thunderstorms.
.THURSDAY NIGHT...East to southeast winds 10 to 15 knots. Seas
around 2 feet. Scattered showers and isolated thunderstorms.
.FRIDAY...East to southeast winds 10 to 15 knots. Seas 2 to
3 feet. Scattered showers and isolated thunderstorms.
.FRIDAY NIGHT...East to southeast winds 10 to 15 knots, increasing
to near 15 knots. Seas 2 to 4 feet, occasionally to 5 feet.
Scattered showers and isolated thunderstorms.
.SATURDAY AND SATURDAY NIGHT...East to southeast winds near 15
knots. Seas 3 to 4 feet, occasionally to 5 feet. Isolated showers
and thunderstorms.

$$

GMZ033-034-242030-
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-
423 AM EDT Tue Jun 24 2025

.TODAY...Northeast to east winds near 15 knots, decreasing to 10
to 15 knots. Seas 2 to 3 feet. Wave Detail: Northeast to east 3
feet at 4 seconds. Scattered showers and isolated thunderstorms.
.TONIGHT...Northeast to east winds near 15 knots, decreasing to 10
to 15 knots. Seas 2 to 3 feet. Wave Detail: East 2 feet at 4
seconds. Scattered showers and isolated thunderstorms.
.WEDNESDAY...East winds 10 to 15 knots. Seas 2 to 3 feet,
subsiding to 1 to 2 feet. Wave Detail: Northeast to east 2 feet
at 4 seconds. Scattered showers and isolated thunderstorms.
.WEDNESDAY NIGHT...East to southeast winds 10 to 15 knots,
becoming southeast and decreasing to 5 to 10 knots. Seas 1 to 2
feet. Scattered showers and isolated thunderstorms.
.THURSDAY...Southeast to south winds 5 to 10 knots. Seas 1 to 2
feet. Scattered showers and isolated thunderstorms.
.THURSDAY NIGHT...Southeast to south winds near 10 knots. Seas
around 1 foot. Scattered showers and isolated thunderstorms.
.FRIDAY...East to southeast winds near 10 knots. Seas 1 to 2
feet. Scattered showers and isolated thunderstorms.
.FRIDAY NIGHT...East to southeast winds 10 to 15 knots. Seas 1 to
2 feet, building to 2 to 3 feet. Scattered showers and isolated
thunderstorms.
.SATURDAY AND SATURDAY NIGHT...East to southeast winds 10 to 15
knots. Seas 2 to 3 feet. Isolated showers and thunderstorms.

$$

BT