358
FZUS52 KKEY 142017
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
417 PM EDT Mon Jul 14 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.

GMZ005-150830-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
417 PM EDT Mon Jul 14 2025

.SYNOPSIS...Weak low pressure tries to develop in the vicinity of
Florida heading through the first half of the week. Initially,
the Keys will be on the southern fringe in a col region resulting
in mainly variable breezes through tonight. As the weak low
pressure area shifts to the west and high pressure builds in
behind, breezes will freshen becoming southeast to south at first,
before becoming east to southeast for mid to late week. Also,
expect increasing coverage of showers and thunderstorms through
the middle part of the week.

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.

$$

GMZ031-150830-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
417 PM EDT Mon Jul 14 2025

.TONIGHT...Variable winds near 5 knots. Bay waters smooth.
Bay waters rough and winds higher in and around numerous showers
and scattered thunderstorms.
.TUESDAY...Southeast to south winds 5 to 10 knots. Bay waters
smooth to a light chop. Bay waters rough and winds higher in and
around widespread showers and scattered thunderstorms.
.TUESDAY NIGHT...Southeast to south winds 5 to 10 knots,
becoming southeast and increasing to 10 to 15 knots after
midnight. Bay waters smooth to a light chop, becoming a light to
moderate chop. Numerous showers and scattered thunderstorms.
.WEDNESDAY...Southeast winds 10 to 15 knots, decreasing to 5 to
10 knots in the afternoon. Bay waters a light to moderate chop,
becoming smooth to a light chop. Numerous showers and scattered
thunderstorms.
.WEDNESDAY NIGHT...East to southeast winds near 10 knots,
increasing to 10 to 15 knots. Bay waters a light chop, becoming a
light to moderate chop. Scattered showers and isolated
thunderstorms.
.THURSDAY...East to southeast winds 10 to 15 knots. Bay waters a
light to moderate chop. Scattered showers and isolated
thunderstorms.
.THURSDAY NIGHT...East to southeast winds 10 to 15 knots. Bay
waters a light to moderate chop. Scattered showers and isolated
thunderstorms.
.FRIDAY...East winds 10 to 15 knots. Bay waters a light to
moderate chop. Scattered showers and isolated thunderstorms.
.FRIDAY NIGHT...East winds 10 to 15 knots. Bay waters a light to
moderate chop. Isolated showers and thunderstorms.
.SATURDAY...East winds near 10 knots. Bay waters a light chop.
Scattered showers and isolated thunderstorms.
.SATURDAY NIGHT...East winds near 10 knots. Bay waters a light
chop. Isolated showers and thunderstorms.

$$

GMZ032-035-150830-
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-
417 PM EDT Mon Jul 14 2025

.TONIGHT...Variable winds near 5 knots. Seas 1 foot or less.
Nearshore waters smooth. Winds and seas higher in and around
numerous showers and scattered thunderstorms.
.TUESDAY...South winds 5 to 10 knots. Seas around 1 foot.
Nearshore waters smooth to a light chop. Winds and seas higher in
and around widespread showers and scattered thunderstorms.
.TUESDAY NIGHT...Southeast to south winds 5 to 10 knots,
becoming southeast and increasing to 10 to 15 knots after
midnight. Seas around 1 foot, building to 1 to 2 feet. Nearshore
waters smooth to a light chop, becoming a light to moderate chop.
Numerous showers and scattered thunderstorms.
.WEDNESDAY...Southeast winds 10 to 15 knots, decreasing to 5 to 10
knots in the afternoon. Seas 1 to 2 feet, subsiding to around 1
foot. Nearshore waters a light to moderate chop, becoming smooth
to a light chop. Numerous showers and scattered thunderstorms.
.WEDNESDAY NIGHT...East to southeast winds 10 to 15 knots. Seas
1 to 2 feet, except building to 2 to 3 feet west of the Marquesas
Keys. Nearshore waters a light to moderate chop. Scattered
showers and isolated thunderstorms.
.THURSDAY...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. Scattered showers and isolated
thunderstorms.
.THURSDAY NIGHT...East to southeast winds near 15 knots. Seas
1 to 2 feet, except around 3 feet west of the Marquesas Keys.
Nearshore waters a moderate chop. Scattered showers and isolated
thunderstorms.
.FRIDAY...East winds near 15 knots. Seas 1 to 2 feet, except
around 3 feet west of the Marquesas Keys. Nearshore waters a
moderate chop. Scattered showers and isolated thunderstorms.
.FRIDAY NIGHT...East winds 10 to 15 knots. Seas 1 to 2 feet,
except around 2 feet west of the Marquesas Keys. Nearshore waters
a light to moderate chop. Scattered showers and isolated
thunderstorms.
.SATURDAY AND SATURDAY NIGHT...East winds near 10 knots. Seas 1
to 2 feet. Nearshore waters a light chop. Scattered showers and
isolated thunderstorms.

$$

GMZ042>044-150830-
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-
417 PM EDT Mon Jul 14 2025

.TONIGHT...Variable winds near 5 knots. Seas 1 foot or less.
Nearshore waters smooth. Winds and seas higher in and around
numerous showers and scattered thunderstorms.
.TUESDAY...Southeast to south winds 5 to 10 knots. Seas around 1
foot. Nearshore waters smooth to a light chop. Winds and seas
higher in and around widespread showers and scattered
thunderstorms.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots, becoming southeast
and increasing to 10 to 15 knots after midnight. Seas around 1
foot, building to around 2 feet. Nearshore waters smooth to a
light chop, becoming a light to moderate chop. Numerous showers
and scattered thunderstorms.
.WEDNESDAY...Southeast to south winds 10 to 15 knots, becoming
southeast and decreasing to 5 to 10 knots in the afternoon. Seas
around 2 feet, subsiding to 1 to 2 feet. Nearshore waters a light
to moderate chop, becoming smooth to a light chop. Numerous
showers and scattered thunderstorms.
.WEDNESDAY NIGHT...East to southeast winds 10 to 15 knots,
increasing to near 15 knots. Seas 1 to 2 feet, building to 2 to 3
feet. Nearshore waters a light to moderate chop, becoming a
moderate chop. Scattered showers and isolated thunderstorms.
.THURSDAY...East to southeast winds near 15 knots. Seas 2 to 3
feet. Nearshore waters a moderate chop. Scattered showers and
isolated thunderstorms.
.THURSDAY NIGHT...East to southeast winds near 15 knots. Seas
2 to 3 feet. Nearshore waters a moderate chop. Scattered showers
and isolated thunderstorms.
.FRIDAY...East winds 10 to 15 knots. Seas around 2 feet.
Nearshore waters a light to moderate chop. Scattered showers and
isolated thunderstorms.
.FRIDAY NIGHT...East winds 10 to 15 knots. Seas around 2 feet.
Nearshore waters a light to moderate chop. Scattered showers and
isolated thunderstorms.
.SATURDAY...East winds near 10 knots. Seas 1 to 2 feet. Nearshore
waters a light chop. Scattered showers and isolated
thunderstorms.
.SATURDAY NIGHT...East winds near 10 knots. Seas 1 to 2 feet.
Nearshore waters a light chop. Scattered showers and isolated
thunderstorms.

$$

GMZ052>055-072>075-150830-
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-
417 PM EDT Mon Jul 14 2025

.TONIGHT...Variable winds near 5 knots, becoming southeast and
increasing to 5 to 10 knots after midnight. Seas around 1 foot,
building to 1 to 2 feet. Wave Detail: Northeast 1 foot at 2
seconds. Winds and seas higher in and around numerous showers and
scattered thunderstorms.
.TUESDAY...Southeast to south winds 5 to 10 knots, becoming east
to southeast in the afternoon. Seas 1 to 2 feet. Wave Detail:
Southeast 1 foot at 3 seconds. Winds and seas higher in and
around numerous showers and scattered thunderstorms.
.TUESDAY NIGHT...East to southeast winds 5 to 10 knots, becoming
southeast and increasing to 10 to 15 knots after midnight. Seas 1
to 2 feet, building to 2 to 3 feet. Wave Detail: Southeast 1 foot
at 3 seconds, becoming southeast 2 feet at 3 seconds. Numerous
showers and scattered thunderstorms.
.WEDNESDAY...Southeast winds 10 to 15 knots, becoming east to
southeast and decreasing to 5 to 10 knots in the afternoon. Seas
2 to 3 feet, subsiding to around 2 feet. Scattered showers and
thunderstorms.
.WEDNESDAY NIGHT...East to southeast winds 10 to 15 knots,
increasing to 15 to 20 knots. Seas 2 to 3 feet, building to 2 to
4 feet, occasionally to 5 feet. Scattered showers and isolated
thunderstorms.
.THURSDAY...East to southeast winds 15 to 20 knots, decreasing to
near 15 knots. Seas 2 to 4 feet, occasionally to 5 feet.
Scattered showers and isolated thunderstorms.
.THURSDAY NIGHT...East winds 15 to 20 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Scattered showers and isolated
thunderstorms.
.FRIDAY...East winds near 15 knots, decreasing to 10 to 15 knots.
Seas 3 to 4 feet, occasionally to 5 feet, subsiding to 2 to 4
feet, occasionally to 5 feet. Scattered showers and isolated
thunderstorms.
.FRIDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.
Scattered showers and isolated thunderstorms.
.SATURDAY AND SATURDAY NIGHT...East winds near 10 knots. Seas 2
to 3 feet. Scattered showers and isolated thunderstorms.

$$

GMZ033-034-150830-
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-
417 PM EDT Mon Jul 14 2025

.TONIGHT...Northwest to north winds near 5 knots, becoming
variable after midnight. Seas 1 foot or less. Wave Detail:
Northwest to north 1 foot at 3 seconds. Winds and seas higher in
and around widespread showers and scattered thunderstorms.
.TUESDAY...South to southwest winds near 5 knots. Seas 1 foot or
less. Wave Detail: Northwest to north 1 foot at 5 seconds. Winds
and seas higher in and around widespread showers and scattered
thunderstorms.
.TUESDAY NIGHT...Southeast to south winds 5 to 10 knots,
increasing to 10 to 15 knots after midnight. Seas around 1 foot,
building to 1 to 2 feet. Numerous showers and scattered
thunderstorms.
.WEDNESDAY...Southeast to south winds 10 to 15 knots, becoming
southeast and decreasing to near 10 knots. Seas 1 to 2 feet.
Numerous showers and scattered thunderstorms.
.WEDNESDAY NIGHT...East to southeast winds 10 to 15 knots. Seas
around 2 feet. Scattered showers and isolated thunderstorms.
.THURSDAY...East to southeast winds 10 to 15 knots. Seas around
2 feet. Scattered showers and isolated thunderstorms.
.THURSDAY NIGHT...East to southeast winds 10 to 15 knots. Seas
2 to 3 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 winds 10 to 15 knots. Seas around 2 feet.
Scattered showers and isolated thunderstorms.
.SATURDAY...East winds near 10 knots. Seas 1 to 2 feet. Scattered
showers and isolated thunderstorms.
.SATURDAY NIGHT...East winds near 10 knots. Seas 1 to 2 feet.
Scattered showers and isolated thunderstorms.

$$