FZUS52 KKEY 250927
CWFKEY
Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
427 AM EST Thu Dec 25 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.
GMZ005-252130-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
427 AM EST Thu Dec 25 2025
.SYNOPSIS...High pressure centered over the northeastern Gulf supports
gentle to moderate northeast to east breezes, except moderate to
fresh across the Straits of Florida this morning. The high will
weaken as it continues to drift slowly southeastward through the
weekend, leading to slackening breezes.
The Approximate Shoreward Edge of the Gulf Stream as of December
21...
24 NM South of Dry Tortugas Light...on Loggerhead Key.
14 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
14 NM South of Sand Key Light...off Key West.
16 NM South of Looe Key...off Big Pine Key.
17 NM Southeast of Sombrero Key Light...off Marathon.
18 NM Southeast of Alligator Reef Light...off Islamorada.
11 NM Southeast of Molasses Reef Light...off Key Largo.
6 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 and RTOFS.
$$
GMZ031-252130-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
427 AM EST Thu Dec 25 2025
.TODAY...North to northeast winds 10 to 15 knots, becoming
northeast and decreasing to 5 to 10 knots. Bay waters a light to
moderate chop, becoming smooth to a light chop. Isolated showers.
.TONIGHT...North to northeast winds near 5 knots, becoming north
and increasing to 5 to 10 knots. Bay waters smooth, becoming
smooth to a light chop. Isolated showers.
.FRIDAY...North to northeast winds 5 to 10 knots, becoming
variable and decreasing to 5 knots in the afternoon. Bay waters
smooth to a light chop, becoming smooth.
.FRIDAY NIGHT...Variable winds near 5 knots, becoming northwest
to north. Bay waters smooth.
.SATURDAY...North winds near 5 knots, becoming variable. Bay
waters smooth.
.SATURDAY NIGHT...Variable winds near 5 knots, becoming north.
Bay waters smooth.
.SUNDAY...North to northeast winds near 5 knots, becoming east.
Bay waters smooth.
.SUNDAY NIGHT...Northeast to east winds near 5 knots. Bay waters
smooth.
.MONDAY...Variable winds near 5 knots. Bay waters smooth.
.MONDAY NIGHT...West to northwest winds near 5 knots. Bay waters
smooth.
$$
GMZ032-035-252130-
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-
427 AM EST Thu Dec 25 2025
.TODAY...North to northeast winds 10 to 15 knots, decreasing to
near 10 knots. Seas 1 to 2 feet, subsiding to around 1 foot. West
of the Marquesas Keys, seas 2 to 3 feet, subsiding to 1 to 2
feet. Nearshore waters a light to moderate chop, becoming a light
chop.
.TONIGHT...North winds 5 to 10 knots, becoming north to northeast
and increasing to near 10 knots. Seas 1 to 2 feet, except around
2 feet west of the Marquesas Keys. Nearshore waters smooth to a
light chop, becoming a light chop.
.FRIDAY...North to northeast winds near 10 knots, decreasing to 5
to 10 knots. Seas 1 to 2 feet, subsiding to around 1 foot.
Nearshore waters a light chop, becoming smooth to a light chop.
.FRIDAY NIGHT...North to northeast winds near 5 knots. Seas 1
foot or less. Nearshore waters smooth.
.SATURDAY...North winds near 5 knots. Seas 1 foot or less.
Nearshore waters smooth.
.SATURDAY NIGHT...North winds near 5 knots. Seas 1 foot or less.
Nearshore waters smooth.
.SUNDAY AND SUNDAY NIGHT...Northeast to east winds near 5 knots.
Seas 1 foot or less. Nearshore waters smooth.
.MONDAY...Variable winds near 5 knots. Seas 1 foot or less.
Nearshore waters smooth.
.MONDAY NIGHT...Northwest winds near 5 knots. Seas 1 foot or
less. Nearshore waters smooth.
$$
GMZ042>044-252130-
Hawk Channel from Ocean Reef to Craig Key out to the reef-
Hawk Channel from Craig Key to west end of Seven Mile Bridge out
to the reef-
Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal
out to the reef-
427 AM EST Thu Dec 25 2025
.TODAY...Northeast winds near 15 knots, becoming north to
northeast and decreasing to 10 to 15 knots. Seas 2 to 3 feet,
except 3 to 4 feet, occasionally to 5 feet west of Cosgrove Shoal
Light. Nearshore waters a moderate chop, becoming a light to
moderate chop. Isolated showers.
.TONIGHT...North to northeast winds near 10 knots, increasing to
10 to 15 knots. Seas 1 to 2 feet, except 2 to 3 feet west of
Cosgrove Shoal Light. Nearshore waters a light chop, becoming a
light to moderate chop. Isolated showers.
.FRIDAY...North to northeast winds near 10 knots, decreasing to 5
to 10 knots. Seas 1 to 2 feet, subsiding to around 1 foot.
Nearshore waters a light chop, becoming smooth to a light chop.
.FRIDAY NIGHT...North to northeast winds near 5 knots. Seas
1 foot or less. Nearshore waters smooth.
.SATURDAY...North to northeast winds near 5 knots. Seas 1 foot or
less. Nearshore waters smooth.
.SATURDAY NIGHT...North to northeast winds near 5 knots. Seas
1 foot or less. Nearshore waters smooth.
.SUNDAY...Northeast to east winds 5 to 10 knots. Seas around 1
foot. Nearshore waters smooth to a light chop.
.SUNDAY NIGHT...East winds 5 to 10 knots, decreasing to near 5
knots. Seas 1 foot or less. Nearshore waters smooth to a light
chop, becoming smooth.
.MONDAY...Variable winds near 5 knots. Seas 1 foot or less.
Nearshore waters smooth.
.MONDAY NIGHT...Northwest to north winds near 5 knots. Seas
1 foot or less. Nearshore waters smooth.
$$
GMZ052>055-072>075-252130-
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-
427 AM EST Thu Dec 25 2025
...SMALL CRAFT SHOULD EXERCISE CAUTION UNTIL WINDS DECREASE AND
SEAS SUBSIDE...
.TODAY...Northeast to east winds 15 to 20 knots, becoming
northeast and decreasing to 10 to 15 knots. Seas 4 to 6 feet,
occasionally to 8 feet, subsiding to 3 to 5 feet, occasionally to
7 feet. Wave Detail: Northeast to east 5 feet at 6 seconds.
Isolated showers.
.TONIGHT...Northeast winds 10 to 15 knots, becoming north to
northeast. Seas 2 to 4 feet, occasionally to 5 feet, subsiding to
2 to 3 feet. Wave Detail: Northeast to east 3 feet at 6 seconds,
becoming northeast to east 2 feet at 5 seconds. Isolated showers.
.FRIDAY...North to northeast winds near 10 knots, becoming
northeast and decreasing to 5 to 10 knots. Seas 2 to 3 feet,
subsiding to around 2 feet. Wave Detail: Northeast 2 feet at 5
seconds.
.FRIDAY NIGHT...Northeast 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 winds 5 to 10 knots, becoming
northeast to east and decreasing to near 5 knots. Seas 1 to 2
feet.
.SUNDAY...Northeast to east winds 5 to 10 knots. Seas 1 to 2 feet.
.SUNDAY NIGHT...East winds 5 to 10 knots, becoming east to
southeast. Seas 1 to 2 feet.
.MONDAY...East to southeast winds near 5 knots, becoming
northeast to east. Seas 1 to 2 feet.
.MONDAY NIGHT...North to northeast winds near 5 knots, becoming
north. Seas 1 to 2 feet.
$$
GMZ033-034-252130-
Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM
out and beyond 5 fathoms-
Gulf of America including Dry Tortugas and Rebecca Shoal Channel-
427 AM EST Thu Dec 25 2025
.TODAY...Northeast to east winds 10 to 15 knots, becoming north to
northeast. Seas 2 to 3 feet. Wave Detail: Northeast 2 feet at 4
seconds.
.TONIGHT...North winds 10 to 15 knots, becoming north to northeast.
Seas 2 to 3 feet. Wave Detail: North to northeast 1 foot at 3
seconds.
.FRIDAY...North to northeast winds near 10 knots, decreasing to 5
to 10 knots. Seas around 2 feet, subsiding to around 1 foot. Wave
Detail: North to northeast 1 foot at 3 seconds.
.FRIDAY NIGHT...North winds near 5 knots. Seas 1 foot or less.
.SATURDAY...North to northeast winds near 5 knots. Seas 1 foot or
less.
.SATURDAY NIGHT...North to northeast winds near 5 knots. Seas
1 foot or less.
.SUNDAY...Northeast to east winds 5 to 10 knots. Seas around 1
foot.
.SUNDAY NIGHT...East winds near 5 knots. Seas 1 foot or less.
.MONDAY...Variable winds near 5 knots. Seas 1 foot or less.
.MONDAY NIGHT...Northwest to north winds near 5 knots. Seas
1 foot or less.
$$
MJV
CWFKEY
Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
427 AM EST Thu Dec 25 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.
GMZ005-252130-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
427 AM EST Thu Dec 25 2025
.SYNOPSIS...High pressure centered over the northeastern Gulf supports
gentle to moderate northeast to east breezes, except moderate to
fresh across the Straits of Florida this morning. The high will
weaken as it continues to drift slowly southeastward through the
weekend, leading to slackening breezes.
The Approximate Shoreward Edge of the Gulf Stream as of December
21...
24 NM South of Dry Tortugas Light...on Loggerhead Key.
14 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
14 NM South of Sand Key Light...off Key West.
16 NM South of Looe Key...off Big Pine Key.
17 NM Southeast of Sombrero Key Light...off Marathon.
18 NM Southeast of Alligator Reef Light...off Islamorada.
11 NM Southeast of Molasses Reef Light...off Key Largo.
6 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 and RTOFS.
$$
GMZ031-252130-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
427 AM EST Thu Dec 25 2025
.TODAY...North to northeast winds 10 to 15 knots, becoming
northeast and decreasing to 5 to 10 knots. Bay waters a light to
moderate chop, becoming smooth to a light chop. Isolated showers.
.TONIGHT...North to northeast winds near 5 knots, becoming north
and increasing to 5 to 10 knots. Bay waters smooth, becoming
smooth to a light chop. Isolated showers.
.FRIDAY...North to northeast winds 5 to 10 knots, becoming
variable and decreasing to 5 knots in the afternoon. Bay waters
smooth to a light chop, becoming smooth.
.FRIDAY NIGHT...Variable winds near 5 knots, becoming northwest
to north. Bay waters smooth.
.SATURDAY...North winds near 5 knots, becoming variable. Bay
waters smooth.
.SATURDAY NIGHT...Variable winds near 5 knots, becoming north.
Bay waters smooth.
.SUNDAY...North to northeast winds near 5 knots, becoming east.
Bay waters smooth.
.SUNDAY NIGHT...Northeast to east winds near 5 knots. Bay waters
smooth.
.MONDAY...Variable winds near 5 knots. Bay waters smooth.
.MONDAY NIGHT...West to northwest winds near 5 knots. Bay waters
smooth.
$$
GMZ032-035-252130-
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-
427 AM EST Thu Dec 25 2025
.TODAY...North to northeast winds 10 to 15 knots, decreasing to
near 10 knots. Seas 1 to 2 feet, subsiding to around 1 foot. West
of the Marquesas Keys, seas 2 to 3 feet, subsiding to 1 to 2
feet. Nearshore waters a light to moderate chop, becoming a light
chop.
.TONIGHT...North winds 5 to 10 knots, becoming north to northeast
and increasing to near 10 knots. Seas 1 to 2 feet, except around
2 feet west of the Marquesas Keys. Nearshore waters smooth to a
light chop, becoming a light chop.
.FRIDAY...North to northeast winds near 10 knots, decreasing to 5
to 10 knots. Seas 1 to 2 feet, subsiding to around 1 foot.
Nearshore waters a light chop, becoming smooth to a light chop.
.FRIDAY NIGHT...North to northeast winds near 5 knots. Seas 1
foot or less. Nearshore waters smooth.
.SATURDAY...North winds near 5 knots. Seas 1 foot or less.
Nearshore waters smooth.
.SATURDAY NIGHT...North winds near 5 knots. Seas 1 foot or less.
Nearshore waters smooth.
.SUNDAY AND SUNDAY NIGHT...Northeast to east winds near 5 knots.
Seas 1 foot or less. Nearshore waters smooth.
.MONDAY...Variable winds near 5 knots. Seas 1 foot or less.
Nearshore waters smooth.
.MONDAY NIGHT...Northwest winds near 5 knots. Seas 1 foot or
less. Nearshore waters smooth.
$$
GMZ042>044-252130-
Hawk Channel from Ocean Reef to Craig Key out to the reef-
Hawk Channel from Craig Key to west end of Seven Mile Bridge out
to the reef-
Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal
out to the reef-
427 AM EST Thu Dec 25 2025
.TODAY...Northeast winds near 15 knots, becoming north to
northeast and decreasing to 10 to 15 knots. Seas 2 to 3 feet,
except 3 to 4 feet, occasionally to 5 feet west of Cosgrove Shoal
Light. Nearshore waters a moderate chop, becoming a light to
moderate chop. Isolated showers.
.TONIGHT...North to northeast winds near 10 knots, increasing to
10 to 15 knots. Seas 1 to 2 feet, except 2 to 3 feet west of
Cosgrove Shoal Light. Nearshore waters a light chop, becoming a
light to moderate chop. Isolated showers.
.FRIDAY...North to northeast winds near 10 knots, decreasing to 5
to 10 knots. Seas 1 to 2 feet, subsiding to around 1 foot.
Nearshore waters a light chop, becoming smooth to a light chop.
.FRIDAY NIGHT...North to northeast winds near 5 knots. Seas
1 foot or less. Nearshore waters smooth.
.SATURDAY...North to northeast winds near 5 knots. Seas 1 foot or
less. Nearshore waters smooth.
.SATURDAY NIGHT...North to northeast winds near 5 knots. Seas
1 foot or less. Nearshore waters smooth.
.SUNDAY...Northeast to east winds 5 to 10 knots. Seas around 1
foot. Nearshore waters smooth to a light chop.
.SUNDAY NIGHT...East winds 5 to 10 knots, decreasing to near 5
knots. Seas 1 foot or less. Nearshore waters smooth to a light
chop, becoming smooth.
.MONDAY...Variable winds near 5 knots. Seas 1 foot or less.
Nearshore waters smooth.
.MONDAY NIGHT...Northwest to north winds near 5 knots. Seas
1 foot or less. Nearshore waters smooth.
$$
GMZ052>055-072>075-252130-
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-
427 AM EST Thu Dec 25 2025
...SMALL CRAFT SHOULD EXERCISE CAUTION UNTIL WINDS DECREASE AND
SEAS SUBSIDE...
.TODAY...Northeast to east winds 15 to 20 knots, becoming
northeast and decreasing to 10 to 15 knots. Seas 4 to 6 feet,
occasionally to 8 feet, subsiding to 3 to 5 feet, occasionally to
7 feet. Wave Detail: Northeast to east 5 feet at 6 seconds.
Isolated showers.
.TONIGHT...Northeast winds 10 to 15 knots, becoming north to
northeast. Seas 2 to 4 feet, occasionally to 5 feet, subsiding to
2 to 3 feet. Wave Detail: Northeast to east 3 feet at 6 seconds,
becoming northeast to east 2 feet at 5 seconds. Isolated showers.
.FRIDAY...North to northeast winds near 10 knots, becoming
northeast and decreasing to 5 to 10 knots. Seas 2 to 3 feet,
subsiding to around 2 feet. Wave Detail: Northeast 2 feet at 5
seconds.
.FRIDAY NIGHT...Northeast 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 winds 5 to 10 knots, becoming
northeast to east and decreasing to near 5 knots. Seas 1 to 2
feet.
.SUNDAY...Northeast to east winds 5 to 10 knots. Seas 1 to 2 feet.
.SUNDAY NIGHT...East winds 5 to 10 knots, becoming east to
southeast. Seas 1 to 2 feet.
.MONDAY...East to southeast winds near 5 knots, becoming
northeast to east. Seas 1 to 2 feet.
.MONDAY NIGHT...North to northeast winds near 5 knots, becoming
north. Seas 1 to 2 feet.
$$
GMZ033-034-252130-
Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM
out and beyond 5 fathoms-
Gulf of America including Dry Tortugas and Rebecca Shoal Channel-
427 AM EST Thu Dec 25 2025
.TODAY...Northeast to east winds 10 to 15 knots, becoming north to
northeast. Seas 2 to 3 feet. Wave Detail: Northeast 2 feet at 4
seconds.
.TONIGHT...North winds 10 to 15 knots, becoming north to northeast.
Seas 2 to 3 feet. Wave Detail: North to northeast 1 foot at 3
seconds.
.FRIDAY...North to northeast winds near 10 knots, decreasing to 5
to 10 knots. Seas around 2 feet, subsiding to around 1 foot. Wave
Detail: North to northeast 1 foot at 3 seconds.
.FRIDAY NIGHT...North winds near 5 knots. Seas 1 foot or less.
.SATURDAY...North to northeast winds near 5 knots. Seas 1 foot or
less.
.SATURDAY NIGHT...North to northeast winds near 5 knots. Seas
1 foot or less.
.SUNDAY...Northeast to east winds 5 to 10 knots. Seas around 1
foot.
.SUNDAY NIGHT...East winds near 5 knots. Seas 1 foot or less.
.MONDAY...Variable winds near 5 knots. Seas 1 foot or less.
.MONDAY NIGHT...Northwest to north winds near 5 knots. Seas
1 foot or less.
$$
MJV