Coastal Waters Forecast
Issued by NWS Key West, FL

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FZUS52 KKEY 261516
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
1016 AM EST Tue Jan 26 2021

Florida Bay, Hawk Channel and Straits of Florida from Ocean Reef to
south of Dry Tortugas, and the extreme southeastern Gulf of
Mexico, 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.

GMZ005-262130-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1016 AM EST Tue Jan 26 2021

.SYNOPSIS...A broad high pressure system between Bermuda and
Puerto Rico will allow for light to gentle breezes this afternoon
through Wednesday. A powerful cold front will barrel through the
Florida Keys coastal waters late Wednesday night and Thursday
morning. Fresh to strong northwest to north breezes are expected
in the wake of the front through at least Thursday night. Breezes
will gradually slacken during the day Friday, becoming moderate to
occasionally fresh. Winds will veer east to southeast Saturday
and Sunday.

The Approximate Shoreward Edge of the Gulf Stream as
of January 23...

52 NM South of Dry Tortugas Light...on Loggerhead Key.
26 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
26 NM South of Sand Key Light...off Key West.
17 NM South of Looe Key...off Big Pine Key.
25 NM South of Sombrero Key Light...off Marathon.
16 NM Southeast of Alligator Reef Light...off Islamorada.
10 NM Southeast of Molasses Reef Light...off Key Largo.
 7 NM East of Carysfort Reef Light...off Ocean Reef.

Gulf Stream Information Courtesy of the Naval Oceanographic Office.

$$

GMZ031-262130-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
1016 AM EST Tue Jan 26 2021

.THIS AFTERNOON...Southeast to south winds 5 to 10 knots. Bay
waters smooth to a light chop.
.TONIGHT...Southeast winds 5 to 10 knots. Bay waters smooth to a
light chop.
.WEDNESDAY...Southeast to south winds 5 to 10 knots, becoming
variable and decreasing to near 5 knots. Bay waters smooth to a
light chop, becoming a smooth.
.WEDNESDAY NIGHT...West to northwest winds 5 to 10 knots, becoming
northwest and increasing to 10 to 15 knots. Bay waters smooth to
a light chop, becoming a light to moderate chop. Isolated showers
after midnight.
.THURSDAY...Northwest to north winds 15 to 20 knots, becoming
north to northeast. Bay waters choppy. Isolated showers in the
morning.
.THURSDAY NIGHT...North to northeast winds near 20 knots. Bay
waters rough.
.FRIDAY...Northeast to east winds near 15 knots, decreasing to 10
to 15 knots. Bay waters a moderate chop, becoming a light to
moderate chop.
.FRIDAY NIGHT AND SATURDAY...Northeast to east winds 10 to 15
knots. Bay waters a light to moderate chop.
.SATURDAY NIGHT...East to southeast winds 10 to 15 knots. Bay
waters a light to moderate chop.

$$

GMZ032-035-262130-
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-
1016 AM EST Tue Jan 26 2021

.THIS AFTERNOON...Southeast winds 5 to 10 knots. Seas 1 foot or
less. Nearshore waters smooth to a light chop.
.TONIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or less.
Nearshore waters smooth to a light chop.
.WEDNESDAY...Southeast to south winds 5 to 10 knots, becoming
variable and decreasing to near 5 knots. Seas 1 foot or less.
Nearshore waters smooth to a light chop, becoming smooth.
.WEDNESDAY NIGHT...West to northwest winds 5 to 10 knots, becoming
northwest and increasing to 10 to 15 knots. Seas 1 foot or less,
building to 1 to 2 feet. Nearshore waters smooth to a light chop,
becoming a light to moderate chop. Isolated showers after
midnight.
.THURSDAY...North to northeast winds 15 to 20 knots. Seas
building to 2 to 5 feet. West of the Marquesas Keys, seas building
to 6 to 7 feet. Nearshore waters choppy. Isolated showers in the
morning.
.THURSDAY NIGHT...Northeast winds near 20 knots. Seas 2 to 5
feet, except 5 to 6 feet west of the Marquesas Keys. Nearshore
waters rough.
.FRIDAY...Northeast to east winds 15 to 20 knots, decreasing to
near 15 knots. Seas 1 to 3 feet, except 3 to 4 feet west of the
Marquesas Keys. Nearshore waters choppy, becoming a moderate chop.
.FRIDAY NIGHT...Northeast to east winds near 15 knots. Seas 1 to
3 feet. Nearshore waters a moderate chop.
.SATURDAY...East winds near 15 knots. Seas 1 to 3 feet. Nearshore
waters a moderate chop.
.SATURDAY NIGHT...East to southeast winds near 15 knots, becoming
10 to 15 knots. Seas 1 to 3 feet. Nearshore waters a moderate
chop, becoming a light to moderate chop.

$$

GMZ042>044-262130-
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-
1016 AM EST Tue Jan 26 2021

.THIS AFTERNOON...Southeast to south winds 5 to 10 knots. Seas 1
to 2 feet. Nearshore waters smooth to a light chop.
.TONIGHT...Southeast winds 5 to 10 knots. Seas 1 to 2 feet.
Nearshore waters smooth to a light chop.
.WEDNESDAY...Southeast to south winds 5 to 10 knots, becoming
variable and decreasing to near 5 knots. Seas subsiding to around
1 foot. Nearshore waters smooth to a light chop, becoming smooth.
.WEDNESDAY NIGHT...West to northwest winds 5 to 10 knots,
becoming northwest and increasing to 10 to 15 knots. Seas around
1 foot, building to 1 to 2 feet. Nearshore waters smooth to a
light chop, becoming a light to moderate chop. Isolated showers
after midnight.
.THURSDAY...North to northeast winds 15 to 20 knots, increasing to
near 20 knots. Seas building to 2 to 4 feet. West of Cosgrove
Shoal Light, seas 3 to 6 feet, building to 5 to 7 feet. Nearshore
waters choppy, becoming rough. Isolated showers in the morning.
.THURSDAY NIGHT...Northeast winds near 20 knots. Seas 2 to 5
feet. Nearshore waters rough.
.FRIDAY...Northeast to east winds 15 to 20 knots, decreasing to
near 15 knots. Seas 2 to 4 feet. Nearshore waters choppy, becoming
a moderate chop.
.FRIDAY NIGHT...Northeast to east winds near 15 knots. Seas 2 to
3 feet. Nearshore waters a moderate chop.
.SATURDAY...East winds near 15 knots. Seas 2 to 3 feet. Nearshore
waters a moderate chop.
.SATURDAY NIGHT...East to southeast winds near 15 knots. Seas
2 to 3 feet. Nearshore waters a moderate chop.

$$

GMZ052>055-072>075-262130-
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-
1016 AM EST Tue Jan 26 2021

.THIS AFTERNOON...Southeast to south winds near 10 knots. Seas
around 2 feet.
.TONIGHT...Southeast winds 10 to 15 knots, decreasing to near 10
knots. Seas around 2 feet.
.WEDNESDAY...Southeast to south winds 5 to 10 knots, becoming
variable and decreasing to near 5 knots. Seas 1 to 2 feet.
.WEDNESDAY NIGHT...Northwest winds 5 to 10 knots, increasing to
10 to 15 knots. Seas building to 2 to 4 feet. Isolated showers
after midnight.
.THURSDAY...North winds 15 to 20 knots, becoming north to northeast
and increasing to 20 to 25 knots. Seas 2 to 5 feet, building to 5
to 8 feet. Isolated showers in the morning.
.THURSDAY NIGHT...Northeast winds 20 to 25 knots, decreasing to
near 20 knots. Seas 5 to 8 feet.
.FRIDAY...Northeast to east winds 15 to 20 knots. Seas 4 to
7 feet.
.FRIDAY NIGHT...Northeast to east winds 15 to 20 knots. Seas 4 to
5 feet.
.SATURDAY...East winds 15 to 20 knots. Seas 4 to 6 feet.
.SATURDAY NIGHT...East to southeast winds 15 to 20 knots,
decreasing to near 15 knots. Seas 4 to 5 feet.

$$

GMZ033-034-262130-
Gulf waters from East Cape Sable to Chokoloskee 20 to 60 NM out
and beyond 5 fathoms-
Gulf of Mexico including Dry Tortugas and Rebecca Shoal Channel-
1016 AM EST Tue Jan 26 2021

.THIS AFTERNOON...Southeast to south winds 5 to 10 knots. Seas 1
to 2 feet.
.TONIGHT...Southeast winds 5 to 10 knots. Seas 1 to 2 feet.
.WEDNESDAY...Southeast to south winds 5 to 10 knots, becoming
variable and decreasing to near 5 knots. Seas around 1 foot.
.WEDNESDAY NIGHT...West to northwest winds 5 to 10 knots,
becoming northwest to north and increasing to 15 to 20 knots.
Seas building to 2 to 4 feet. Isolated showers after midnight.
.THURSDAY...North to northeast winds increasing to 20 to 25
knots. Seas building to 5 to 9 feet. Isolated showers in the
morning.
.THURSDAY NIGHT...Northeast winds near 20 knots. Seas 4 to 7
feet.
.FRIDAY...Northeast winds 15 to 20 knots, decreasing to near 15
knots. Seas 3 to 6 feet, subsiding to 2 to 4 feet.
.FRIDAY NIGHT...Northeast to east winds near 15 knots. Seas 2 to
4 feet.
.SATURDAY...East winds near 15 knots. Seas 2 to 4 feet.
.SATURDAY NIGHT...East to southeast winds near 15 knots. Seas 2
to 4 feet.

$$

SDR


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