Coastal Waters Forecast
Issued by NWS Key West, FL

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865
FZUS52 KKEY 040224
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
924 PM 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.

GMZ005-041430-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
924 PM EST Tue Nov 3 2026

.SYNOPSIS...
High pressure offshore the Mid Atlantic States will maintain
gentle to occasionally moderate east breezes through the evening
followed by gradual slackening. Expect light to gentle breezes
through the remainder of the week along with drier conditions. A
surface high will develop across the Gulf beginning Friday, which
may lead to brief nocturnal wind surges along the west coast of
Florida and into the outer Gulf waters.


The Approximate Shoreward Edge of the Gulf Stream as of November
03, 2026...

57 NM south of Dry Tortugas Light, on Loggerhead Key
34 NM south of Cosgrove Shoal Light, off the Marquesas Keys
25 NM south of Sand Key Light, off Key West
17 NM south of Looe Key, off Big Pine Key
17 NM southeast of Sombrero Key Light, off Marathon
28 NM south-southeast of Alligator Reef Light, off Islamorada
26 NM southeast of Molasses Reef Light, off Key Largo
12 NM east-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.

$$

GMZ031-041430-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
924 PM EST Tue Nov 3 2026

.OVERNIGHT...East winds near 10 knots. Bay waters a a light 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 AND THURSDAY...Northeast to east winds near 10
knots. Bay waters a light chop. A slight chance of showers and
thunderstorms.
.THURSDAY NIGHT...Northeast winds near 10 knots. Bay waters a
light chop.
.FRIDAY...Northeast winds 5 to 10 knots. Bay waters smooth to a
light chop.
.FRIDAY NIGHT...Northeast winds 5 to 10 knots. Bay waters smooth
to a light chop.
.SATURDAY...North to northeast winds near 5 knots, becoming east
near 5 knots in the afternoon. Bay waters smooth.
.SATURDAY NIGHT...North to northeast winds 5 to 10 knots. Bay
waters smooth to a light chop.
.SUNDAY...North to northeast winds near 5 knots. Bay waters
smooth.
.SUNDAY NIGHT...Northwest to north winds 5 to 10 knots, increasing
to near 10 knots. Bay waters smooth to a light chop, becoming a
light chop. A slight chance of showers.

$$

GMZ032-035-041430-
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-
924 PM EST Tue Nov 3 2026

.OVERNIGHT...East winds near 10 knots. Seas around 1 foot, except
1 to 2 feet west of the Marquesas Keys. Nearshore waters a light
chop. 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 around 1 foot. Nearshore waters a light chop,
becoming smooth to 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 slight chance of
showers and thunderstorms.
.THURSDAY...Northeast to 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.
.THURSDAY NIGHT...Northeast to east winds near 10 knots,
decreasing to 5 to 10 knots. Seas around 1 foot. Nearshore waters
a light chop, becoming smooth to a light chop.
.FRIDAY...Northeast winds 5 to 10 knots, decreasing to near 5
knots. Seas 1 foot or less. Nearshore waters smooth to a light
chop, becoming smooth.
.FRIDAY NIGHT...North to northeast winds 5 to 10 knots. Seas 1
foot or less. Nearshore waters smooth to a light chop.
.SATURDAY...North to northeast winds near 5 knots. Seas 1 foot or
less. Nearshore waters smooth.
.SATURDAY NIGHT...North to northeast winds 5 to 10 knots. Seas 1
foot or less. Nearshore waters smooth to a light chop.
.SUNDAY...North winds near 5 knots, becoming northwest to north 5
to 10 knots. Seas 1 foot or less, building to around 1 foot.
Nearshore waters smooth, becoming smooth to a light chop.
.SUNDAY NIGHT...Northwest to north winds near 10 knots,
becoming north 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. A slight chance of showers.

$$

GMZ042>044-041430-
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-
924 PM EST Tue Nov 3 2026

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

$$

GMZ052-072-041430-
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-
924 PM EST Tue Nov 3 2026

.OVERNIGHT...East winds 10 to 15 knots, decreasing to near 10
knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail:
North to northeast 4 feet at 6 seconds. A chance of showers with a
slight chance of thunderstorms.
.WEDNESDAY...Northeast to east winds near 10 knots. Seas 2 to 3
feet. Wave Detail: North to northeast 2 feet at 6 seconds. A
chance of showers with a slight chance of thunderstorms.
.WEDNESDAY NIGHT...Northeast to east winds near 10 knots. Seas
2 to 3 feet, subsiding to around 2 feet. Wave Detail: North to
northeast to east 2 feet at 5 seconds. A slight chance of showers
and thunderstorms.
.THURSDAY...Northeast to east winds near 10 knots. Seas around
2 feet. A slight chance of showers and thunderstorms.
.THURSDAY NIGHT...Northeast winds 10 to 15 knots. Seas 2 to
3 feet.
.FRIDAY...Northeast winds near 10 knots. Seas around 2 feet.
.FRIDAY NIGHT THROUGH SATURDAY NIGHT...Northeast winds 5 to 10
knots. Seas 1 to 2 feet.
.SUNDAY...Northeast winds 5 to 10 knots. Seas 1 to 2 feet. A
slight chance of showers.
.SUNDAY NIGHT...North winds 5 to 10 knots, becoming north to
northeast near 10 knots. Seas 1 to 2 feet, building to around 2
feet. A chance of showers.

$$

GMZ053>055-073>075-041430-
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-
924 PM EST Tue Nov 3 2026

.OVERNIGHT...East to southeast winds near 10 knots, decreasing to
5 to 10 knots. Seas 2 to 3 feet, subsiding to around 2 feet. Wave
Detail: East 3 feet at 6 seconds. A chance of showers with a
slight chance of thunderstorms.
.WEDNESDAY...Northeast to east winds 5 to 10 knots. Seas around 2
feet, subsiding to 1 to 2 feet. Wave Detail: Northeast to east 2
feet at 6 seconds. A slight chance of showers and thunderstorms.
.WEDNESDAY NIGHT...Northeast to east winds near 10 knots. Seas
around 2 feet. Wave Detail: Northeast to east 2 feet at 5
seconds. A slight chance of showers and thunderstorms.
.THURSDAY...Northeast to east winds near 10 knots. Seas around 2
feet. A slight chance of showers and thunderstorms.
.THURSDAY NIGHT...Northeast to east winds 10 to 15 knots. Seas
2 to 3 feet. A slight chance of showers and thunderstorms.
.FRIDAY...Northeast winds near 10 knots, decreasing to 5 to 10
knots. Seas 1 to 2 feet.
.FRIDAY NIGHT THROUGH SATURDAY NIGHT...Northeast winds 5 to 10
knots. Seas 1 to 2 feet.
.SUNDAY...Northeast winds 5 to 10 knots. Seas 1 to 2 feet. A
slight chance of showers.
.SUNDAY NIGHT...North to northeast winds near 10 knots. Seas
around 2 feet. A chance of showers with a slight chance of
thunderstorms.

$$

GMZ033-034-041430-
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-
924 PM EST Tue Nov 3 2026

.OVERNIGHT...East to southeast winds 10 to 15 knots. Seas 1 to 3
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. Wave Detail: Northeast to east 1 foot at
3 seconds. A slight chance of showers and thunderstorms.
.WEDNESDAY NIGHT...Northeast to east winds near 10 knots. Seas
1 to 2 feet. Wave Detail: Northeast to east 1 foot at 3 seconds.
A slight chance of showers and thunderstorms.
.THURSDAY...Northeast to east winds 5 to 10 knots. Seas around
1 foot. A slight chance of showers and thunderstorms.
.THURSDAY NIGHT...Northeast to east winds 5 to 10 knots. Seas
around 1 foot. A slight chance of showers and thunderstorms.
.FRIDAY...Northeast winds 5 to 10 knots. Seas around 1 foot.
.FRIDAY NIGHT...Northwest to north winds near 10 knots, becoming
north to northeast. Seas 1 to 2 feet.
.SATURDAY...North to northeast winds 5 to 10 knots. Seas around 1
foot.
.SATURDAY NIGHT...Northwest to north winds near 10 knots, becoming
north to northeast. Seas 1 to 2 feet.
.SUNDAY...North winds 5 to 10 knots, becoming northwest to north
near 10 knots. Seas around 1 foot. A slight chance of showers.
.SUNDAY NIGHT...North winds 10 to 15 knots. Seas 1 to 2 feet,
building to 2 to 3 feet. A slight chance of showers.

$$

CLR