146
FZUS52 KKEY 010820
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
420 AM EDT Tue Jul 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.

GMZ005-012030-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
420 AM EDT Tue Jul 1 2025

.SYNOPSIS...Broad low-level ridging will continue to rebuild over
the North Atlantic and support gentle to moderate east to
southeasterly breezes across Florida Keys coastal waters, veering
to the southeast to south and modestly slackening throughout the
week. An upper-level low north of the Bahamas will continue to
move slowly northwestward towards the Florida east coast early
this week, supporting slightly enhanced rain and thunder chances.
Rain chances will briefly taper back mid-week before increasing
again late this week due to a new weather disturbance sliding into
the Southeast United States.

The Approximate Shoreward Edge of the Gulf Stream as of June 29...

14 NM Southwest of Dry Tortugas Light...on Loggerhead Key.
15 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
18 NM South of Sand Key Light...off Key West.
26 NM South of Looe Key...off Big Pine Key.
31 NM South of Sombrero Key Light...off Marathon.
18 NM Southeast of Alligator Reef Light...off Islamorada.
 9 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.

$$

GMZ031-012030-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
420 AM EDT Tue Jul 1 2025

.TODAY...East to southeast winds near 10 knots, becoming southeast
5 to 10 knots. Bay waters a light chop, becoming smooth to a light
chop. Scattered showers and thunderstorms, mainly this morning.
.TONIGHT...Southeast to south winds 5 to 10 knots. Bay waters
smooth to a light chop. Scattered showers and isolated
thunderstorms.
.WEDNESDAY...Southeast to south winds 5 to 10 knots. Bay waters
smooth to a light chop. Scattered showers and isolated
thunderstorms.
.WEDNESDAY NIGHT...Southeast to south winds 5 to 10 knots. Bay
waters smooth to a light chop. Isolated showers and
thunderstorms.
.THURSDAY...South winds 5 to 10 knots. Bay waters smooth to a
light chop. Isolated showers and thunderstorms.
.THURSDAY NIGHT...South winds near 5 knots. Bay waters smooth.
Isolated showers and thunderstorms.
.FRIDAY...South to southwest winds near 5 knots. Bay waters
smooth. Scattered showers and isolated thunderstorms.
.FRIDAY NIGHT...Variable winds near 5 knots. Bay waters smooth.
Scattered showers and thunderstorms.
.SATURDAY...Southwest winds near 5 knots. Bay waters smooth.
Scattered showers and thunderstorms.
.SATURDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters
smooth to a light chop. Scattered showers and isolated
thunderstorms.

$$

GMZ032-035-012030-
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-
420 AM EDT Tue Jul 1 2025

.TODAY...East to southeast winds near 10 knots, becoming southeast
5 to 10 knots. Seas around 1 foot, subsiding to 1 foot or less.
West of the Marquesas Keys, seas 1 to 2 feet, subsiding to around
1 foot. Nearshore waters a light chop, becoming smooth to a light
chop. Scattered showers and thunderstorms, mainly this morning.
.TONIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or less.
Nearshore waters smooth to a light chop. Scattered showers and
isolated thunderstorms.
.WEDNESDAY...Southeast to south winds 5 to 10 knots. Seas 1 foot
or less. Nearshore waters smooth to a light chop. Isolated
showers and thunderstorms.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or
less. Nearshore waters smooth to a light chop. Isolated showers
and thunderstorms.
.THURSDAY...South winds 5 to 10 knots. Seas 1 foot or less.
Nearshore waters smooth to a light chop. Isolated showers and
thunderstorms.
.THURSDAY NIGHT...South winds near 5 knots. Seas 1 foot or less.
Nearshore waters smooth. Isolated showers and thunderstorms.
.FRIDAY...South to southwest winds near 5 knots. Seas 1 foot or
less. Nearshore waters smooth. Scattered showers and isolated
thunderstorms.
.FRIDAY NIGHT...Light and variable winds. Seas 1 foot or less.
Nearshore waters smooth. Scattered showers and thunderstorms.
.SATURDAY...Southwest winds near 5 knots. Seas 1 foot or less.
Nearshore waters smooth. Scattered showers and thunderstorms.
.SATURDAY NIGHT...Southwest to west winds 5 to 10 knots. Seas 1
foot or less. Nearshore waters smooth to a light chop. Scattered
showers and isolated thunderstorms.

$$

GMZ042>044-012030-
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-
420 AM EDT Tue Jul 1 2025

.TODAY...East to southeast winds near 10 knots, becoming southeast
5 to 10 knots. Seas 1 to 2 feet, subsiding to around 1 foot.
Nearshore waters a light chop, becoming smooth to a light chop.
Scattered showers and thunderstorms, mainly this morning. Winds
and seas higher in and around thunderstorms.
.TONIGHT...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 5 to 10 knots. Seas around
1 foot. Nearshore waters smooth to a light chop. Isolated showers
and thunderstorms.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
1 foot. Nearshore waters smooth to a light chop. Isolated showers
and thunderstorms.
.THURSDAY...Southeast to south winds 5 to 10 knots. Seas around
1 foot. Nearshore waters smooth to a light chop. Isolated showers
and thunderstorms.
.THURSDAY NIGHT...East to southeast winds near 5 knots. Seas
around 1 foot. Nearshore waters smooth. Isolated showers and
thunderstorms.
.FRIDAY...South to southwest winds near 5 knots. Seas around
1 foot. Nearshore waters smooth. Scattered showers and isolated
thunderstorms.
.FRIDAY NIGHT...Variable winds near 5 knots. Seas 1 foot or less.
Nearshore waters smooth. Scattered showers and thunderstorms.
.SATURDAY...Southwest winds near 5 knots. Seas 1 foot or less.
Nearshore waters smooth. Scattered showers and thunderstorms.
.SATURDAY NIGHT...Southwest winds 5 to 10 knots. Seas around 1
foot. Nearshore waters smooth to a light chop. Scattered showers
and isolated thunderstorms.

$$

GMZ052>055-072>075-012030-
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-
420 AM EDT Tue Jul 1 2025

.TODAY...East to southeast winds near 10 knots, becoming southeast
5 to 10 knots. Seas 2 to 3 feet, subsiding to 1 to 2 feet. Wave
Detail: East to southeast 3 feet at 5 seconds. Scattered showers
and thunderstorms, mainly this morning. Winds and seas higher in
and around thunderstorms.
.TONIGHT...East to southeast winds 5 to 10 knots. Seas 1 to
2 feet. Wave Detail: East to southeast 2 feet at 4 seconds.
Scattered showers and isolated thunderstorms.
.WEDNESDAY...Southeast winds 5 to 10 knots. Seas 1 to 2 feet.
Wave Detail: East to southeast 2 feet at 5 seconds. Isolated
showers and thunderstorms.
.WEDNESDAY NIGHT...East to southeast winds 5 to 10 knots. Seas
1 to 2 feet. Isolated showers and thunderstorms.
.THURSDAY...Southeast winds 5 to 10 knots. Seas 1 to 2 feet.
Isolated showers and thunderstorms.
.THURSDAY NIGHT...East to southeast winds 5 to 10 knots. Seas
around 1 foot. Isolated showers and thunderstorms.
.FRIDAY...Southeast winds near 5 knots. Seas around 1 foot.
Scattered showers and isolated thunderstorms.
.FRIDAY NIGHT...Variable winds near 5 knots. Seas around 1 foot.
Scattered showers and thunderstorms.
.SATURDAY...Southwest to west winds near 5 knots. Seas around 1
foot. Scattered showers and thunderstorms.
.SATURDAY NIGHT...West winds near 5 knots, becoming southwest 5 to
10 knots. Seas around 1 foot. Scattered showers and isolated
thunderstorms.

$$

GMZ033-034-012030-
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-
420 AM EDT Tue Jul 1 2025

.TODAY...East to southeast winds near 10 knots, becoming
southeast to south 5 to 10 knots. Seas 1 to 2 feet. Wave Detail:
East to southeast 1 foot at 3 seconds. Scattered showers and
thunderstorms, mainly this morning.
.TONIGHT...Southeast to south winds near 5 knots. Seas around
1 foot. Wave Detail: East to southeast 1 foot at 3 seconds.
Scattered showers and isolated thunderstorms.
.WEDNESDAY...South winds 5 to 10 knots. Seas around 1 foot. Wave
Detail: Southeast 1 foot at 3 seconds. Isolated showers and
thunderstorms.
.WEDNESDAY NIGHT...Southwest winds near 5 knots, becoming
southeast to south. Seas 1 foot or less. Isolated showers and
thunderstorms.
.THURSDAY...South to southwest winds near 5 knots. Seas around
1 foot. Isolated showers and thunderstorms.
.THURSDAY NIGHT...West to northwest winds near 5 knots, becoming
south around 5 knots after midnight. Seas around 1 foot.
Scattered showers and isolated thunderstorms.
.FRIDAY...Southwest to west winds near 5 knots. Seas around
1 foot. Scattered showers and isolated thunderstorms.
.FRIDAY NIGHT...West to northwest winds 5 to 10 knots, becoming
southwest to west near 5 knots. Seas around 1 foot. Scattered
showers and thunderstorms.
.SATURDAY...South to southwest winds near 5 knots. Seas around
1 foot. Scattered showers and thunderstorms.
.SATURDAY NIGHT...Southwest winds 5 to 10 knots. Seas around 1
foot. Scattered showers and isolated thunderstorms.

$$