539
FZUS52 KKEY 262118 CCA
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
416 PM EST Wed Nov 26 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.

GMZ005-270930-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
416 PM EST Wed Nov 26 2025

.SYNOPSIS...A surface ridge will continue to pull away this
evening. As a result the pressure field will weaken, leading to
light to gentle, east to southeast breezes. A cold front
associated with a deepening trough will push through the Florida
Keys coastal waters late on Thursday. Breezes will freshen
drastically late Thursday night in the wake of the front, with
fresh to strong breezes and an increase in shower activity
expected through Saturday night. Breezes will begin to slacken by
Sunday.

The Approximate Shoreward Edge of the Gulf Stream as of November
22...

35 NM South of Dry Tortugas Light...on Loggerhead Key.
12 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
 6 NM South of Sand Key Light...off Key West.
 7 NM South of Looe Key...off Big Pine Key.
 8 NM Southeast of Sombrero Key Light...off Marathon.
 9 NM Southeast of Alligator Reef Light...off Islamorada.
 3 NM Southeast of Molasses Reef Light...off Key Largo.
 1 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.

$$

GMZ031-270930-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
416 PM EST Wed Nov 26 2025

.TONIGHT...East to southeast winds near 10 knots early, decreasing
to 5 to 10 knots. Bay waters a light chop, becoming smooth to a
light chop. Scattered showers and isolated thunderstorms.
.THURSDAY...Variable winds near 5 knots, becoming northwest to
north near 10 knots in the afternoon. Bay waters smooth, becoming
a light chop. Scattered showers and isolated thunderstorms.
.THURSDAY NIGHT...Northwest to north winds 10 to 15 knots,
becoming north 20 to 25 knots after midnight. Bay waters a light
to moderate chop, becoming very rough. Scattered showers.
.FRIDAY...North to northeast winds 20 to 25 knots. Bay waters
very rough. Isolated showers.
.FRIDAY NIGHT...Northeast winds 20 to 25 knots, decreasing to near
20 knots. Bay waters very rough, becoming rough. Isolated
showers.
.SATURDAY...Northeast to east winds near 20 knots. Bay waters
rough. Isolated showers.
.SATURDAY NIGHT...East winds decreasing to 15 to 20 knots. Bay
waters becoming choppy. Scattered showers.
.SUNDAY...East winds near 15 knots, decreasing to 10 to 15 knots.
Bay waters a moderate chop, becoming a light to moderate chop.
Isolated showers.
.SUNDAY NIGHT...East to southeast winds near 10 knots. Bay waters
a light chop. Isolated showers.
.MONDAY...Southeast winds 5 to 10 knots. Bay waters smooth to a
light chop. Isolated showers.
.MONDAY NIGHT...East winds near 5 knots. Bay waters smooth.

$$

GMZ032-035-270930-
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-
416 PM EST Wed Nov 26 2025

.TONIGHT...East to southeast winds near 10 knots early, decreasing
to 5 to 10 knots. Seas around 1 foot, subsiding to 1 foot or
less. Nearshore waters a light chop, becoming smooth to a light
chop. Scattered showers and isolated thunderstorms.
.THURSDAY...Northeast winds near 5 knots, becoming northwest to
north 10 to 15 knots in the afternoon. Seas 1 foot or less. West
of the Marquesas Keys, seas building to 1 to 2 feet. Nearshore
waters smooth, becoming a light to moderate chop. Scattered
showers and isolated thunderstorms.
.THURSDAY NIGHT...North winds 15 to 20 knots, becoming north to
northeast near 25 knots after midnight. Seas 1 to 2 feet, building
to 3 to 5 feet, occasionally to 6 feet. West of the Marquesas
Keys, seas 2 to 3 feet, building to 5 to 7 feet, occasionally to
9 feet. Nearshore waters choppy, becoming extremely rough.
Scattered showers.
.FRIDAY...North to northeast winds near 25 knots, decreasing to 20
to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet, except 6
to 9 feet, occasionally to 11 feet west of the Marquesas Keys.
Nearshore waters extremely rough, becoming very rough. Isolated
showers.
.FRIDAY NIGHT...Northeast winds 20 to 25 knots. Seas 3 to 5 feet,
occasionally to 6 feet, except 5 to 7 feet, occasionally to
9 feet west of the Marquesas Keys. Nearshore waters very rough.
Isolated showers.
.SATURDAY...Northeast to east winds near 20 knots. Seas 3 to 5
feet, occasionally to 6 feet, except 4 to 6 feet, occasionally to
8 feet west of the Marquesas Keys. Nearshore waters rough.
Isolated showers.
.SATURDAY NIGHT...East winds near 20 knots, decreasing to 15 to
20 knots. Seas 2 to 4 feet, occasionally to 5 feet, except 4 to 5
feet, occasionally to 6 feet west of the Marquesas Keys. Nearshore
waters rough, becoming choppy. Scattered showers.
.SUNDAY...East winds near 15 knots, decreasing to 10 to 15 knots.
Seas 2 to 3 feet, subsiding to 1 to 2 feet. West of the Marquesas
Keys, seas 3 to 4 feet, subsiding to 2 to 3 feet. Nearshore
waters a moderate chop, becoming a light to moderate chop.
Isolated showers.
.SUNDAY NIGHT...East to southeast winds near 10 knots. Seas 1 to 2
feet, subsiding to around 1 foot. Nearshore waters a light chop.
Isolated showers.
.MONDAY...East to southeast winds 5 to 10 knots. Seas 1 foot or
less. Nearshore waters smooth to a light chop. Isolated showers.
.MONDAY NIGHT...Northeast to east winds near 5 knots. Seas 1 foot
or less. Nearshore waters smooth.

$$

GMZ042>044-270930-
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-
416 PM EST Wed Nov 26 2025

.TONIGHT...East to southeast winds 10 to 15 knots, decreasing to 5
to 10 knots late. Seas 1 to 2 feet. Nearshore waters a light to
moderate chop, becoming smooth to a light chop. Scattered showers
and isolated thunderstorms.
.THURSDAY...Northeast to east winds near 5 knots, becoming
northwest to north 10 to 15 knots in the afternoon. Seas around 1
foot, except building to 1 to 2 feet west of Cosgrove Shoal Light.
Nearshore waters smooth, becoming a light to moderate chop.
Scattered showers and isolated thunderstorms.
.THURSDAY NIGHT...North winds 15 to 20 knots, becoming north to
northeast 20 to 25 knots after midnight. Seas 1 to 2 feet. West of
Cosgrove Shoal Light, seas 2 to 3 feet, building to 4 to 6 feet,
occasionally to 8 feet. Nearshore waters choppy, becoming very
rough. Scattered showers.
.FRIDAY...North to northeast winds near 20 knots, decreasing to
20 to 25 knots. Seas 2 to 4 feet, occasionally to 5 feet, except 5
to 7 feet, occasionally to 9 feet west of Cosgrove Shoal Light.
Nearshore waters extremely rough, becoming very rough. Isolated
showers.
.FRIDAY NIGHT...Northeast winds 20 to 25 knots. Seas 2 to 4 feet,
occasionally to 5 feet, except 5 to 6 feet, occasionally to
8 feet west of Cosgrove Shoal Light. Nearshore waters very rough.
Isolated showers.
.SATURDAY...Northeast to east winds near 20 knots. Seas 3 to
4 feet, occasionally to 5 feet, except 4 to 6 feet, occasionally
to 8 feet west of Cosgrove Shoal Light. Nearshore waters rough.
Isolated showers.
.SATURDAY NIGHT...East winds near 20 knots, decreasing to 15 to
20 knots late. Seas 3 to 5 feet, occasionally to 6 feet.
Nearshore waters rough, becoming choppy. Scattered showers.
.SUNDAY...East to southeast winds near 15 knots, decreasing to 10
to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Nearshore
waters a moderate chop, becoming a light to moderate chop.
Scattered showers.
.SUNDAY NIGHT...East to southeast winds decreasing to near 10
knots. Seas 2 to 3 feet, subsiding to around 2 feet. Nearshore
waters becoming a light chop. Isolated showers.
.MONDAY...East to southeast winds 5 to 10 knots. Seas 1 to 2
feet. Nearshore waters smooth to a light chop. Isolated showers.
.MONDAY NIGHT...East winds near 5 knots. Seas around 1 foot.
Nearshore waters smooth.

$$

GMZ052>055-072>075-270930-
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-
416 PM EST Wed Nov 26 2025

.TONIGHT...East to southeast winds 10 to 15 knots, decreasing to
near 10 knots. Seas around 2 feet. Wave Detail: East 2 feet at 5
seconds. Scattered showers and isolated thunderstorms.
.THURSDAY...East winds 5 to 10 knots, becoming north to northeast
10 to 15 knots in the afternoon. Seas 1 to 2 feet, except building
to 2 to 3 feet west of Halfmoon Shoal Light. Wave Detail: East 2
feet at 4 seconds. Scattered showers and isolated thunderstorms.
.THURSDAY NIGHT...North winds 15 to 20 knots, becoming north to
northeast near 25 knots after midnight. Seas 2 to 4 feet,
occasionally to 5 feet, building to 4 to 7 feet, occasionally to
9 feet. Wave Detail: North to northeast 3 feet at 4 seconds,
becoming north to northeast 6 feet at 5 seconds. Scattered
showers.
.FRIDAY...North to northeast winds near 25 knots. Seas 6 to
9 feet, occasionally to 11 feet. Scattered showers.
.FRIDAY NIGHT...Northeast winds decreasing to 20 to 25 knots.
Seas 7 to 9 feet, occasionally to 11 feet. Scattered showers.
.SATURDAY...Northeast to east winds near 20 knots. Seas 6 to
8 feet, occasionally to 10 feet. Scattered showers.
.SATURDAY NIGHT...East winds 20 to 25 knots, decreasing to 15 to
20 knots. Seas 5 to 7 feet, occasionally to 9 feet. Scattered
showers.
.SUNDAY...East to southeast winds near 15 knots, decreasing to 10
to 15 knots. Seas 4 to 6 feet, occasionally to 8 feet, subsiding
to 3 to 5 feet, occasionally to 6 feet. Isolated showers.
.SUNDAY NIGHT...East to southeast winds 10 to 15 knots. Seas 2 to
4 feet, occasionally to 5 feet. Isolated showers.
.MONDAY...East to southeast winds near 10 knots, decreasing to 5
to 10 knots. Seas 2 to 3 feet. Isolated showers.
.MONDAY NIGHT...East winds 5 to 10 knots. Seas 1 to 2 feet.

$$

GMZ033-034-270930-
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-
416 PM EST Wed Nov 26 2025

.TONIGHT...East winds near 10 knots early, decreasing to 5 to 10
knots. Seas around 1 foot. Wave Detail: East 1 foot at 3 seconds.
Scattered showers and isolated thunderstorms.
.THURSDAY...Northeast winds 5 to 10 knots, becoming north 15 to
20 knots in the afternoon. Seas building to 1 to 3 feet. Wave
Detail: North 2 feet at 3 seconds. Scattered showers and isolated
thunderstorms.
.THURSDAY NIGHT...North winds near 20 knots, increasing to near
25 knots. Seas 3 to 5 feet, occasionally to 6 feet, building to 5
to 8 feet, occasionally to 10 feet. Wave Detail:
Northwest to north 6 feet at 6 seconds, becoming north 6 feet at 7
seconds. Isolated showers.
.FRIDAY...North to northeast winds 25 to 30 knots, decreasing to
20 to 25 knots. Seas 6 to 9 feet, occasionally to 11 feet.
Isolated showers.
.FRIDAY NIGHT...Northeast winds 20 to 25 knots. Seas 5 to 7 feet,
occasionally to 9 feet. Isolated showers.
.SATURDAY...Northeast to east winds near 20 knots. Seas 4 to 6
feet, occasionally to 8 feet. Isolated showers.
.SATURDAY NIGHT...East winds near 20 knots, decreasing to 15 to
20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Scattered
showers.
.SUNDAY...East to southeast winds near 15 knots, decreasing to 10
to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet, subsiding
to 1 to 3 feet. Isolated showers.
.SUNDAY NIGHT...East to southeast winds decreasing to near 10
knots. Seas subsiding to 1 to 2 feet. Isolated showers.
.MONDAY...East to southeast winds 5 to 10 knots. Seas subsiding to
around 1 foot. Isolated showers.
.MONDAY NIGHT...Northeast to east winds near 5 knots. Seas 1 foot
or less.

$$