National Weather Service Marine Forecast FZUS52 KKEY
FZUS52 KKEY 140826
CWFKEY
Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
426 AM EDT Tue Jul 14 2026
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.
The Wave Detail section highlights the period and direction of origin for the highest-energy waves, as well as any long-period swells moving in a different direction than the wind.
GMZ005-142030
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
426 AM EDT Tue Jul 14 2026
SYNOPSIS
A ridge axis will stretch west across Central and South Florida this week, supporting gentle to moderate east to southeast breezes. The wind speeds will tend to peak in the evening and overnight hours before decreasing slightly in the morning and afternoon hours. In addition, a large area of Saharan dust will remain in place across the area for several days which will act to limit rain and thunder chances.
The Approximate Shoreward Edge of the Gulf Stream as of July 12...
63 NM South of Dry Tortugas Light...on Loggerhead Key. 38 NM South of Cosgrove Shoal Light...off the Marquesas Keys. 21 NM South of Sand Key Light...off Key West. 13 NM South of Looe Key...off Big Pine Key. 12 NM South of Sombrero Key Light...off Marathon. 7 NM Southeast of Alligator Reef Light...off Islamorada. 3 NM Southeast of Molasses Reef Light...off Key Largo. 2 NM Southeast of Carysfort Reef Light...off Ocean Reef.
Gulf Stream Information Courtesy of the National Weather Service in Key West, using data from RTOFS and NASA SPoRT SST.
GMZ031-142030
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound
426 AM EDT Tue Jul 14 2026
TODAY
East to southeast winds 10 to 15 knots, decreasing 5 to
10 knots. Bay waters a light to moderate chop, becoming smooth to
a light chop.
TONIGHT
Northeast to east winds increasing to near 15 knots.
Bay waters becoming a moderate chop.
WEDNESDAY
East winds 10 to 15 knots, decreasing to near 10
knots. Bay waters a light to moderate chop, becoming a light
chop. A slight chance of showers and thunderstorms.
WEDNESDAY NIGHT
East winds 5 to 10 knots. Bay waters smooth to
a light chop. A slight chance of showers and thunderstorms.
THURSDAY
East winds 5 to 10 knots. Bay waters smooth to a
light chop. A slight chance of showers and thunderstorms.
THURSDAY NIGHT
East to southeast winds near 5 knots. Bay
waters smooth. A slight chance of showers and thunderstorms.
FRIDAY
East to southeast winds near 5 knots. Bay waters
smooth. A slight chance of showers and thunderstorms.
FRIDAY NIGHT
Southeast winds near 5 knots. Bay waters smooth.
SATURDAY
Southeast winds 5 to 10 knots. Bay waters smooth to a
light chop. A slight chance of showers and thunderstorms.
SATURDAY NIGHT
Southeast winds 5 to 10 knots. Bay waters
smooth to a light chop.
GMZ032-035-142030
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
426 AM EDT Tue Jul 14 2026
TODAY
East to southeast 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.
TONIGHT
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.
WEDNESDAY
East winds 10 to 15 knots. Seas 1 to 2 feet.
Nearshore waters a light to moderate chop. A slight chance of
showers and thunderstorms.
WEDNESDAY NIGHT
East winds 10 to 15 knots. Seas 1 to 2 feet.
Nearshore waters a light to moderate chop. A slight chance of
showers and thunderstorms.
THURSDAY
East winds near 10 knots, decreasing to 5 to 10
knots. Seas around 1 foot, except 1 to 2 feet west of the
Marquesas Keys. Nearshore waters a light chop, becoming smooth to
a light chop. A slight chance of showers and thunderstorms.
THURSDAY NIGHT
East winds 5 to 10 knots. Seas 1 foot or less.
Nearshore waters smooth to a light chop. A slight chance of
showers and thunderstorms.
FRIDAY
East winds 5 to 10 knots. Seas 1 foot or less.
Nearshore waters smooth to a light chop. A slight chance of
showers and thunderstorms.
FRIDAY NIGHT
East to southeast winds near 5 knots. Seas 1 foot
or less. Nearshore waters smooth.
SATURDAY
Southeast winds near 5 knots. Seas 1 foot or less.
Nearshore waters smooth. A slight chance of showers.
SATURDAY NIGHT
Southeast winds 5 to 10 knots. Seas 1 foot or
less. Nearshore waters smooth to a light chop. A slight chance of
showers.
GMZ042>044-142030
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
426 AM EDT Tue Jul 14 2026
TODAY
East to southeast winds near 15 knots, becoming east and
decreasing to 10 to 15 knots. Seas 2 to 3 feet. Nearshore waters
a moderate chop, becoming a light to moderate chop.
TONIGHT
Northeast to east winds near 15 knots. Seas 2 to 3
feet. Nearshore waters a moderate chop.
WEDNESDAY
East winds 10 to 15 knots. Seas 2 to 3 feet.
Nearshore waters a light to moderate chop. A slight chance of
showers and thunderstorms.
WEDNESDAY NIGHT
East winds 10 to 15 knots. Seas 2 to 3 feet.
Nearshore waters a light to moderate chop. A slight chance of
showers and thunderstorms.
THURSDAY
East winds near 10 knots. Seas around 2 feet.
Nearshore waters a light chop. A slight chance of showers and
thunderstorms.
THURSDAY NIGHT
East winds 5 to 10 knots. Seas 1 to 2 feet.
Nearshore waters smooth to a light chop. A slight chance of
showers and thunderstorms.
FRIDAY
East winds 5 to 10 knots. Seas around 1 foot. Nearshore
waters smooth to a light chop. A slight chance of showers and
thunderstorms.
FRIDAY NIGHT
East winds near 5 knots. Seas around 1 foot.
Nearshore waters smooth.
SATURDAY
East to southeast winds near 5 knots. Seas around
1 foot. Nearshore waters smooth.
SATURDAY NIGHT
East to southeast winds 5 to 10 knots. Seas
around 1 foot. Nearshore waters smooth to a light chop.
GMZ052>055-072>075-142030
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
426 AM EDT Tue Jul 14 2026
TODAY
East to southeast winds near 15 knots, becoming east.
Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at
5 seconds.
TONIGHT
Northeast to east winds near 15 knots. Seas 3 to 4
feet, occasionally to 5 feet. Wave Detail: Northeast to east
4 feet at 5 seconds.
WEDNESDAY
East winds near 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: East 4 feet at 5 seconds. A
slight chance of showers and thunderstorms.
WEDNESDAY NIGHT
East winds 10 to 15 knots. Seas 2 to 4 feet,
occasionally to 5 feet. A slight chance of showers and
thunderstorms.
THURSDAY
East winds 10 to 15 knots. Seas 2 to 4 feet,
occasionally to 5 feet. A slight chance of showers and
thunderstorms.
THURSDAY NIGHT
East winds near 10 knots. Seas around 2 feet. A
slight chance of showers and thunderstorms.
FRIDAY
East winds 5 to 10 knots. Seas 1 to 2 feet.
FRIDAY NIGHT
East winds 5 to 10 knots. Seas 1 to 2 feet. A
slight chance of showers.
SATURDAY
East winds 5 to 10 knots. Seas 1 to 2 feet.
SATURDAY NIGHT
East to southeast winds 5 to 10 knots. Seas
1 to 2 feet.
GMZ033-034-142030
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
426 AM EDT Tue Jul 14 2026
TODAY
East to southeast winds near 15 knots, decreasing to 10
to 15 knots. Seas 2 to 3 feet. Wave Detail: East to southeast 3
feet at 4 seconds.
TONIGHT
East winds 10 to 15 knots. Seas 1 to 3 feet. Wave
Detail: East 2 feet at 4 seconds. A slight chance of showers and
thunderstorms.
WEDNESDAY
East winds 10 to 15 knots. Seas 1 to 3 feet. Wave
Detail: East 2 feet at 4 seconds.
WEDNESDAY NIGHT
East winds 10 to 15 knots. Seas 1 to 3 feet. A
slight chance of showers and thunderstorms.
THURSDAY
Northeast to east winds 10 to 15 knots, decreasing to
5 to 10 knots. Seas 1 to 3 feet, subsiding to 1 to 2 feet. A
slight chance of showers and thunderstorms.
THURSDAY NIGHT
Northeast to east winds near 5 knots,
increasing to 5 to 10 knots after midnight. Seas 1 to 2 feet. A
slight chance of showers and thunderstorms.
FRIDAY
Northeast winds 5 to 10 knots. Seas around 1 foot. A
slight chance of showers and thunderstorms.
FRIDAY NIGHT
Northeast winds near 5 knots. Seas around 1 foot.
A slight chance of showers and thunderstorms.
SATURDAY
East to southeast winds near 5 knots. Seas around
1 foot.
SATURDAY NIGHT
Southeast winds near 5 knots. Seas around
1 foot. A slight chance of showers and thunderstorms.
MJV
NDBC on Facebook
NOAA on LinkedIn
NDBC on Twitter