349
FZUS52 KKEY 030937
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
437 AM EST Tue Nov 3 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.

GMZ005-032145-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
437 AM EST Tue Nov 3 2026

.SYNOPSIS...
High pressure offshore the Mid Atlantic States will maintain
gentle to occasionally moderate east winds today. Slightly
elevated northerly swell will persist through today for the waters
southeast of the Upper Keys. Broad wind confluence across the
marine zones will keep shower and thunderstorm chances slightly
above normal through Wednesday. Expect slackening breezes and
drier air gradually decreasing rain and thunder chances during the
latter portion of the week.

The Approximate Shoreward Edge of the Gulf Stream as of October
27, 2026...

19 NM south of Dry Tortugas Light, on Loggerhead Key
34 NM south of Cosgrove Shoal Light, off the Marquesas Keys
28 NM south of Sand Key Light, off Key West
38 NM south of Looe Key, off Big Pine Key
31 NM southeast of Sombrero Key Light, off Marathon
17 NM south-southeast of Alligator Reef Light, off Islamorada
10 NM southeast of Molasses Reef Light, off Key Largo
10 NM northwest 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.

$$

GMZ031-032145-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
437 AM EST Tue Nov 3 2026

.TODAY...East winds 10 to 15 knots. Bay waters a light to
moderate chop. A chance of showers with a slight chance of
thunderstorms.
.TONIGHT...Northeast to east winds 10 to 15 knots. Bay waters a
light to moderate chop. A chance of showers with a slight chance
of thunderstorms.
.WEDNESDAY...Northeast to east winds near 10 knots. Bay waters a
light chop. A chance of showers with a slight chance of
thunderstorms.
.WEDNESDAY NIGHT...Northeast to east winds near 10 knots. Bay
waters a light chop. A chance of showers with a slight chance of
thunderstorms.
.THURSDAY...Northeast to east winds 5 to 10 knots. Bay waters
smooth to a light chop. A slight chance of showers and
thunderstorms.
.THURSDAY NIGHT...Northeast winds 5 to 10 knots. Bay waters
smooth to a light chop.
.FRIDAY...Northeast to east winds near 5 knots. Bay waters
smooth.
.FRIDAY NIGHT...Northeast winds near 5 knots. Bay waters smooth.
.SATURDAY AND SATURDAY NIGHT...Northeast to east winds near 5
knots. Bay waters smooth.

$$

GMZ032-035-032145-
Bayside and Gulf side from Craig Key to west end of Seven Mile
Bridge-
Gulf of Mexico from west end of Seven Mile Bridge to Halfmoon
Shoal out to 5 Fathoms-
437 AM EST Tue Nov 3 2026

.TODAY...East winds near 10 knots. Seas 1 to 2 feet. Nearshore
waters a light chop. A chance of showers with a slight chance of
thunderstorms.
.TONIGHT...East winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore
waters a light to moderate chop. A chance of showers with a
slight chance of thunderstorms.
.WEDNESDAY...East winds near 10 knots. Seas 1 to 2 feet, subsiding
to around 1 foot. Nearshore waters a light chop. A chance of
showers with a slight chance of thunderstorms.
.WEDNESDAY NIGHT...Northeast to east winds near 10 knots. Seas
around 1 foot. Nearshore waters a light chop. A chance of showers
with a slight chance of thunderstorms.
.THURSDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less.
Nearshore waters smooth to a light chop. A slight chance of
showers and thunderstorms.
.THURSDAY NIGHT...Northeast winds near 5 knots. Seas 1 foot or
less. Nearshore waters smooth.
.FRIDAY...North to northeast winds near 5 knots. Seas 1 foot or
less. Nearshore waters smooth.
.FRIDAY NIGHT...Northeast winds near 5 knots. Seas 1 foot or
less. Nearshore waters smooth.
.SATURDAY...Northeast winds near 5 knots. Seas 1 foot or less.
Nearshore waters smooth.
.SATURDAY NIGHT...Northeast winds near 5 knots. Seas 1 foot or
less. Nearshore waters smooth.

$$

GMZ042-032145-
Hawk Channel from Ocean Reef to Craig Key out to the reef-
437 AM EST Tue Nov 3 2026

.TODAY...East winds near 15 knots, decreasing to 10 to 15 knots.
Seas 2 to 3 feet. Nearshore waters a moderate chop, becoming a
light to moderate chop. A chance of showers with a slight chance
of thunderstorms.
.TONIGHT...Northeast to east winds 10 to 15 knots. Seas 2 to 3
feet. Nearshore waters a light to moderate chop. A chance of
showers with a slight chance of thunderstorms.
.WEDNESDAY...Northeast to east winds near 10 knots. Seas around 2
feet, subsiding to 1 to 2 feet. Nearshore waters a light chop. A
chance of showers with a slight chance of thunderstorms.
.WEDNESDAY NIGHT...Northeast to east winds near 10 knots. Seas
1 to 2 feet. Nearshore waters a light chop. A slight chance of
showers and thunderstorms.
.THURSDAY...Northeast to east winds near 10 knots. Seas 1 to 2 feet.
Nearshore waters a light chop. A slight chance of showers and
thunderstorms.
.THURSDAY NIGHT...Northeast winds 5 to 10 knots. Seas around
1 foot. Nearshore waters smooth to a light chop.
.FRIDAY...Northeast winds near 5 knots. Seas around 1 foot.
Nearshore waters smooth.
.FRIDAY NIGHT...Northeast to east winds 5 to 10 knots. Seas
around 1 foot. Nearshore waters smooth to a light chop.
.SATURDAY AND SATURDAY NIGHT...Northeast to east winds near 5
knots. Seas around 1 foot. Nearshore waters smooth.

$$

GMZ043-044-032145-
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-
437 AM EST Tue Nov 3 2026

.TODAY...East winds near 10 knots. Seas around 2 feet. Nearshore
waters a light chop. A chance of showers with a slight chance of
thunderstorms.
.TONIGHT...East winds 10 to 15 knots. Seas around 2 feet.
Nearshore waters a light to moderate chop. A chance of showers
with a slight chance of thunderstorms.
.WEDNESDAY...East winds near 10 knots. Seas 1 to 2 feet.
Nearshore waters a light chop. A slight chance of showers and
thunderstorms.
.WEDNESDAY NIGHT...Northeast to east winds near 10 knots. Seas
around 1 foot. Nearshore waters a light chop. A chance of showers
with a slight chance of thunderstorms.
.THURSDAY...Northeast winds near 10 knots. Seas around 1 foot.
Nearshore waters a light chop. A slight chance of showers and
thunderstorms.
.THURSDAY NIGHT...Northeast winds 5 to 10 knots. Seas around
1 foot. Nearshore waters smooth to a light chop.
.FRIDAY...North to northeast winds near 5 knots. Seas around
1 foot. Nearshore waters smooth.
.FRIDAY NIGHT...Northeast winds near 5 knots. Seas 1 foot or
less. Nearshore waters smooth.
.SATURDAY...Northeast winds near 5 knots. Seas 1 foot or less.
Nearshore waters smooth.
.SATURDAY NIGHT...Northeast to east winds 5 to 10 knots. Seas
around 1 foot. Nearshore waters smooth to a light chop.

$$

GMZ052-072-032145-
Straits of Florida from Ocean Reef to Craig Key out 20 NM-
Straits of Florida from Ocean Reef to Craig Key 20 to 60 NM out-
437 AM EST Tue Nov 3 2026

.TODAY...East winds near 15 knots early, decreasing to 10 to 15
knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail:
Northeast to east 4 feet at 6 seconds. A chance of showers with a
slight chance of thunderstorms.
.TONIGHT...Northeast to east winds 10 to 15 knots. Seas 3 to 4
feet, occasionally to 5 feet. Wave Detail: Northeast to east 3
feet at 5 seconds. A chance of showers with a slight chance of
thunderstorms.
.WEDNESDAY...Northeast to east winds 10 to 15 knots. Seas 2 to
3 feet. A chance of showers with a slight chance of
thunderstorms.
.WEDNESDAY NIGHT...Northeast to east winds 10 to 15 knots. Seas
around 2 feet. A slight chance of showers and thunderstorms.
.THURSDAY...Northeast winds near 10 knots. Seas around 2 feet. A
slight chance of showers and thunderstorms.
.THURSDAY NIGHT...Northeast to east winds 5 to 10 knots. Seas
1 to 2 feet.
.FRIDAY...Northeast winds 5 to 10 knots. Seas 1 to 2 feet.
.FRIDAY NIGHT...Northeast to east winds 5 to 10 knots. Seas 1 to
2 feet.
.SATURDAY...Northeast winds 5 to 10 knots. Seas 1 to 2 feet.
.SATURDAY NIGHT...Northeast to east winds 5 to 10 knots. Seas
around 1 foot.

$$

GMZ053>055-073>075-032145-
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 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-
437 AM EST Tue Nov 3 2026

.TODAY...East winds near 10 knots. Seas 2 to 3 feet. Wave Detail:
East 3 feet at 6 seconds. A chance of showers with a slight
chance of thunderstorms.
.TONIGHT...East winds 10 to 15 knots, decreasing to near 10
knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 6 seconds. A
chance of showers with a slight chance of thunderstorms.
.WEDNESDAY...Northeast to east winds near 10 knots, decreasing to
5 to 10 knots. Seas 1 to 2 feet. A slight chance of showers and
thunderstorms.
.WEDNESDAY NIGHT...Northeast to east winds near 10 knots. Seas
1 to 2 feet. A slight chance of showers and thunderstorms.
.THURSDAY...Northeast winds near 10 knots. Seas 1 to 2 feet. A
slight chance of showers and thunderstorms.
.THURSDAY NIGHT...Northeast winds 5 to 10 knots. Seas 1 to
2 feet.
.FRIDAY...Northeast winds 5 to 10 knots. Seas 1 to 2 feet.
.FRIDAY NIGHT...Northeast winds 5 to 10 knots. Seas around
1 foot.
.SATURDAY...Northeast winds 5 to 10 knots. Seas around 1 foot.
.SATURDAY NIGHT...Northeast to east winds 5 to 10 knots. Seas
around 1 foot.

$$

GMZ033-034-032145-
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-
437 AM EST Tue Nov 3 2026

.TODAY...East winds 10 to 15 knots early, decreasing to 10 to 15
knots. Seas 2 to 3 feet. Wave Detail: East to southeast 3 feet at
4 seconds. A chance of showers with a slight chance of
thunderstorms.
.TONIGHT...East winds 10 to 15 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 4 seconds. A chance of showers with a
slight chance of thunderstorms.
.WEDNESDAY...East winds near 10 knots, decreasing to 5 to 10
knots. Seas 1 to 2 feet. A slight chance of showers and
thunderstorms.
.WEDNESDAY NIGHT...Northeast to east winds 5 to 10 knots. Seas
around 1 foot. A slight chance of showers and thunderstorms.
.THURSDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less. A
slight chance of showers and thunderstorms.
.THURSDAY NIGHT...North to northeast winds near 5 knots. Seas
1 foot or less.
.FRIDAY...North to northeast winds near 5 knots. Seas 1 foot or
less.
.FRIDAY NIGHT...North to northeast winds near 5 knots. Seas
1 foot or less.
.SATURDAY...Northeast winds near 5 knots. Seas 1 foot or less.
.SATURDAY NIGHT...Northeast winds 5 to 10 knots. Seas 1 foot or
less.

$$