669
FZUS52 KKEY 022125
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
425 PM EST Tue Dec 2 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.

GMZ005-030930-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
425 PM EST Tue Dec 2 2025

.SYNOPSIS...A developing low pressure system extends from the
Carolinas to the Florida Panhandle. A corresponding cold front is
expected to press through the Keys late overnight into Wednesday
morning. In the wake, breezes will freshen out of the north to
northeast Wednesday. Another surface high builds back in following
the front with gentle broadly southern breezes returning in time
for the weekend. There is the potential for another frontal
passage Sunday afternoon and evening.

The Approximate Shoreward Edge of the Gulf Stream as of November
28...

28 NM South of Dry Tortugas Light...on Loggerhead Key.
20 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
17 NM South of Sand Key Light...off Key West.
15 NM South of Looe Key...off Big Pine Key.
15 NM Southeast of Sombrero Key Light...off Marathon.
10 NM Southeast of Alligator Reef Light...off Islamorada.
 9 NM Southeast of Molasses Reef Light...off Key Largo.
 8 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.

$$

GMZ031-030930-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
425 PM EST Tue Dec 2 2025

.TONIGHT...Southwest winds near 10 knots early, becoming
southwest to west 5 to 10 knots in the evening, then becoming
northwest near 5 knots after midnight. Bay waters a light chop,
becoming smooth. Patchy fog developing after midnight.
.WEDNESDAY...Variable winds near 5 knots. Bay waters smooth.
Patchy fog in the morning.
.WEDNESDAY NIGHT...Winds becoming north to northeast and
increasing to 5 to 10 knots. Bay waters becoming smooth to a
light chop.
.THURSDAY...Northeast to east winds near 10 knots. Bay waters a
light chop.
.THURSDAY NIGHT...Northeast to east winds 10 to 15 knots. Bay
waters a light to moderate chop.
.FRIDAY...East winds 10 to 15 knots, becoming east to southeast
near 10 knots. Bay waters a light to moderate chop, becoming a
light chop.
.FRIDAY NIGHT...East to southeast winds 5 to 10 knots. Bay waters
smooth to a light chop.
.SATURDAY...Southeast to south winds 5 to 10 knots. Bay waters
smooth to a light chop.
.SATURDAY NIGHT...Southeast to south winds increasing to near 10
knots. Bay waters becoming a light chop. Isolated showers.
.SUNDAY...Southwest winds 10 to 15 knots. Bay waters a light to
moderate chop. Scattered showers.
.SUNDAY NIGHT...West to northwest winds 10 to 15 knots. Bay
waters a light to moderate chop. Scattered showers.

$$

GMZ032-035-030930-
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-
425 PM EST Tue Dec 2 2025

.TONIGHT...Southwest to west winds 5 to 10 knots, becoming
west to northwest near 5 knots. Seas 1 foot or less. Nearshore
waters smooth to a light chop, becoming smooth. Isolated showers.
Patchy fog developing after midnight.
.WEDNESDAY...North winds increasing to 5 to 10 knots. Seas
building to around 1 foot, except building to 1 to 2 feet west of
the Marquesas Keys. Nearshore waters becoming smooth to a light
chop. Patchy fog in the morning.
.WEDNESDAY NIGHT...Northwest to north winds near 10 knots,
becoming north to northeast 10 to 15 knots. Seas 1 to 2 feet,
except building to 2 to 3 feet west of the Marquesas Keys.
Nearshore waters a light chop, becoming a light to moderate chop.
.THURSDAY...Northeast to east 10 to 15 knots, briefly decreasing
to 5 to 10 knots in the afternoon. Seas 1 to 2 feet. West of the
Marquesas Keys, seas 2 to 3 feet, subsiding to around 2 feet.
Nearshore waters a light to moderate chop, becoming smooth to a
light chop.
.THURSDAY NIGHT...Northeast to east winds near 10 knots,
increasing to 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters
a light chop, becoming a light to moderate chop.
.FRIDAY...Northeast to east winds 10 to 15 knots, becoming east
to southeast near 10 knots. Seas 1 to 2 feet, subsiding to around
1 foot. Nearshore waters a light to moderate chop, becoming a
light chop.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots. Seas subsiding to 1
foot or less. Nearshore waters smooth to a light chop. Isolated
showers.
.SATURDAY...Southeast to south winds 5 to 10 knots. Seas 1 foot
or less. Nearshore waters smooth to a light chop. Isolated
showers.
.SATURDAY NIGHT...Southeast to south winds increasing to near 10
knots. Seas building to around 1 foot, except building to 1 to 2
feet west of the Marquesas Keys. Nearshore waters becoming a
light chop. Isolated showers.
.SUNDAY...Southwest winds 10 to 15 knots. Seas 1 to 2 feet, except
2 to 3 feet west of the Marquesas Keys. Nearshore waters a light
to moderate chop. Scattered showers.
.SUNDAY NIGHT...West to northwest winds 10 to 15 knots. Seas 1 to
2 feet, except 2 to 3 feet west of the Marquesas Keys. Nearshore
waters a light to moderate chop. Scattered showers.

$$

GMZ042>044-030930-
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-
425 PM EST Tue Dec 2 2025

.TONIGHT...Southwest winds 10 to 15 knots early, becoming
southwest to west near 10 knots in the evening, then becoming west
to northwest 5 to 10 knots after midnight. Seas around 2 feet,
subsiding to around 1 foot. Nearshore waters smooth to a light to
moderate chop, becoming smooth to a light chop. Isolated showers.
.WEDNESDAY...North winds 5 to 10 knots. Seas around 1 foot, except
building to 1 to 2 feet west of Cosgrove Shoal Light. Nearshore
waters smooth to a light chop. Patchy fog in the morning.
.WEDNESDAY NIGHT...North to northeast winds near 10 knots,
increasing to 10 to 15 knots. Seas 1 to 2 feet, except building to
2 to 3 feet west of Cosgrove Shoal Light. Nearshore waters a
light chop, becoming a light to moderate chop.
.THURSDAY...Northeast to east winds 10 to 15 knots. Seas 1 to
2 feet. West of Cosgrove Shoal Light, seas 2 to 3 feet, subsiding
to around 2 feet. Nearshore waters a light to moderate chop.
.THURSDAY NIGHT...Northeast to east winds 10 to 15 knots. Seas
around 2 feet. Nearshore waters a light to moderate chop.
.FRIDAY...East to southeast winds 10 to 15 knots, decreasing to
near 10 knots. Seas subsiding to 1 to 2 feet. Nearshore waters a
light to moderate chop, becoming a light chop.
.FRIDAY NIGHT...Southeast winds near 10 knots. Seas 1 to 2 feet.
Nearshore waters a light chop. Isolated showers.
.SATURDAY...Southeast to south winds near 10 knots. Seas 1 to 2
feet. Nearshore waters a light chop. Isolated showers.
.SATURDAY NIGHT...Southeast winds near 10 knots, becoming south
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.
Isolated showers.
.SUNDAY...Southwest winds 10 to 15 knots. Seas 2 to 3 feet.
Nearshore waters a light to moderate chop. Scattered showers.
.SUNDAY NIGHT...West to northwest winds 10 to 15 knots. Seas 1 to
2 feet, except 2 to 3 feet west of Cosgrove Shoal Light.
Nearshore waters a light to moderate chop. Scattered showers.

$$

GMZ052>055-072>075-030930-
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-
425 PM EST Tue Dec 2 2025

.TONIGHT...Southwest to west winds 10 to 15 knots early, becoming
west near 10 knots in the evening, then becoming west to northwest
5 to 10 knots. Seas 2 to 3 feet, subsiding to 1 to 2 feet. Wave
Detail: Southwest to west 2 feet at 4 seconds. Isolated showers.
.WEDNESDAY...North winds 5 to 10 knots. Seas 1 to 2 feet. Wave
Detail: Northwest to north 1 foot at 4 seconds. Isolated showers.
.WEDNESDAY NIGHT...North to northeast winds near 10 knots,
increasing to 10 to 15 knots. Seas building to 2 to 3 feet. Wave
Detail: North to northeast 2 feet at 3 seconds and west to
northwest 2 feet at 6 seconds.
.THURSDAY...Northeast to east winds 10 to 15 knots. Seas 2 to
3 feet.
.THURSDAY NIGHT...Northeast to east winds near 15 knots. Seas 2
to 4 feet.
.FRIDAY...East to southeast winds 10 to 15 knots. Seas 2 to
3 feet.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to 3 feet.
Isolated showers.
.SATURDAY...Southeast winds near 10 knots. Seas around 2 feet,
subsiding to 1 to 2 feet. Isolated showers.
.SATURDAY NIGHT...East to southeast winds near 10 knots, becoming
south 10 to 15 knots. Seas 1 to 3 feet. Scattered showers.
.SUNDAY...Southwest winds 10 to 15 knots. Seas 2 to 3 feet.
Scattered showers.
.SUNDAY NIGHT...West to northwest winds 10 to 15 knots. Seas 2 to
3 feet. Scattered showers.

$$

GMZ033-034-030930-
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-
425 PM EST Tue Dec 2 2025

.TONIGHT...Southwest to west winds near 10 knots, becoming west to
northwest 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: Southwest
2 feet at 4 seconds. Isolated showers.
.WEDNESDAY...North to northeast winds near 10 knots. Seas building
to around 2 feet. Wave Detail: West to northwest 2 feet at 6
seconds. Isolated showers.
.WEDNESDAY NIGHT...North to northeast winds 10 to 15 knots. Seas
2 to 3 feet. Wave Detail: Northwest 3 feet at 6 seconds.
.THURSDAY...Northeast to east winds 10 to 15 knots, briefly
decreasing to 5 to 10 knots in the afternoon. Seas 2 to 3 feet,
subsiding to 1 to 2 feet.
.THURSDAY NIGHT...Northeast to east winds near 10 knots,
increasing to 10 to 15 knots. Seas 1 to 2 feet, building to around
2 feet.
.FRIDAY...East to southeast winds 10 to 15 knots, decreasing to
near 10 knots. Seas subsiding to 1 to 2 feet.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 to 2 feet,
subsiding to around 1 foot. Isolated showers.
.SATURDAY...Southeast to south winds 5 to 10 knots. Seas around
1 foot. Isolated showers.
.SATURDAY NIGHT...Southeast to south winds near 10 knots,
becoming south 10 to 15 knots. Seas 1 to 2 feet. Scattered
showers.
.SUNDAY...Southwest winds 10 to 15 knots. Seas building to 2 to 3
feet. Scattered showers.
.SUNDAY NIGHT...West to northwest winds 10 to 15 knots, increasing
to near 15 knots. Seas 2 to 3 feet. Isolated showers.

$$