FZUS52 KKEY 230929
CWFKEY
Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
429 AM EST Tue Dec 23 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.
GMZ005-232130-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
429 AM EST Tue Dec 23 2025
.SYNOPSIS...A sprawling high pressure system centered over the
western North Atlantic will support fresh to strong northeast to
east breezes across Florida Keys coastal waters today. Thereafter,
high pressure areas north of the Florida Keys will fluctuate in
both position and intensity. Moderate to fresh northeast to east
breezes will prevail across Keys coastal waters through mid week,
diminishing thereafter.
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.
$$
GMZ031-232130-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
429 AM EST Tue Dec 23 2025
...SMALL CRAFT ADVISORY IN EFFECT...
.TODAY...Northeast to east winds 20 to 25 knots, decreasing to
near 20 knots. Bay waters very rough, becoming rough. Isolated
showers.
.TONIGHT...Northeast to east winds near 20 knots, decreasing to
15 to 20 knots. Bay waters rough, becoming choppy. Isolated
showers.
.WEDNESDAY...Northeast to east winds 15 to 20 knots. Bay waters
choppy.
.WEDNESDAY NIGHT...Northeast to east winds 15 to 20 knots,
becoming northeast and decreasing to near 15 knots. Bay waters
choppy, becoming a moderate chop.
.THURSDAY...Northeast winds near 15 knots, decreasing to near 10
knots in the afternoon. Bay waters a moderate chop, becoming a
light chop.
.THURSDAY NIGHT...North to northeast winds 5 to 10 knots. Bay
waters smooth to a light chop.
.FRIDAY...North to northeast winds 5 to 10 knots, becoming east
and decreasing to near 5 knots. Bay waters smooth to a light
chop, becoming smooth.
.FRIDAY NIGHT...East winds near 5 knots, becoming north to
northeast. Bay waters smooth.
.SATURDAY...North to northeast winds 5 to 10 knots, becoming east.
Bay waters smooth to a light chop.
.SATURDAY NIGHT...Northeast to east winds near 5 knots. Bay
waters smooth.
$$
GMZ032-035-232130-
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-
429 AM EST Tue Dec 23 2025
...SMALL CRAFT ADVISORY IN EFFECT...
.TODAY...Northeast to east winds 20 to 25 knots, decreasing to
near 20 knots. Seas 2 to 4 feet, occasionally to 5 feet, except 4
to 6 feet, occasionally to 8 feet west of the Marquesas Keys.
Nearshore waters very rough, becoming rough. Isolated showers.
.TONIGHT...Northeast to east winds near 20 knots. Seas 2 to
3 feet, except around 4 feet, occasionally to 5 feet west of the
Marquesas Keys. Nearshore waters rough. Isolated showers.
.WEDNESDAY...Northeast to east winds 15 to 20 knots. Seas 2 to 4
feet, occasionally to 5 feet, except 3 to 5 feet, occasionally to
6 feet west of the Marquesas Keys. Nearshore waters choppy.
.WEDNESDAY NIGHT...Northeast to east winds 15 to 20 knots. Seas 2
to 3 feet, except 3 to 4 feet, occasionally to 5 feet west of the
Marquesas Keys. Nearshore waters choppy.
.THURSDAY...Northeast winds 15 to 20 knots, decreasing to 10 to
15 knots in the afternoon. Seas 2 to 3 feet, subsiding to 1 to 2
feet. West of the Marquesas Keys, seas 2 to 4 feet, occasionally
to 5 feet, subsiding to 2 to 3 feet. Nearshore waters choppy,
becoming a light to moderate chop.
.THURSDAY NIGHT...North to northeast winds near 10 knots. Seas 1
to 2 feet, except around 2 feet west of the Marquesas Keys.
Nearshore waters becoming a light chop.
.FRIDAY...North to northeast winds near 10 knots, becoming east
and 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...East winds 5 to 10 knots, becoming northeast.
Seas around 1 foot. Nearshore waters smooth to a light chop.
.SATURDAY...Northeast winds 5 to 10 knots, becoming northeast to
east. Seas around 1 foot. Nearshore waters smooth to a light
chop.
.SATURDAY NIGHT...Northeast to east winds 5 to 10 knots. Seas
around 1 foot. Nearshore waters smooth to a light chop.
$$
GMZ042>044-232130-
Hawk Channel from Ocean Reef to Craig Key out to the reef-
Hawk Channel from Craig Key to west end of Seven Mile Bridge out
to the reef-
Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal
out to the reef-
429 AM EST Tue Dec 23 2025
...SMALL CRAFT ADVISORY IN EFFECT...
.TODAY...Northeast to east winds 20 to 25 knots, decreasing to
near 20 knots. Seas 4 to 6 feet, occasionally to 8 feet.
Nearshore waters very rough, becoming rough. Isolated showers.
.TONIGHT...Northeast to east winds near 20 knots. Seas 3 to
5 feet, occasionally to 6 feet. Nearshore waters rough. Isolated
showers.
.WEDNESDAY...Northeast to east winds 15 to 20 knots. Seas 3 to
4 feet, occasionally to 5 feet. Nearshore waters choppy.
.WEDNESDAY NIGHT...Northeast to east winds 15 to 20 knots. Seas
3 to 4 feet, occasionally to 5 feet. Nearshore waters choppy.
.THURSDAY...Northeast winds 15 to 20 knots, decreasing to 10 to
15 knots in the afternoon. Seas 2 to 4 feet, occasionally to 5
feet, subsiding to 2 to 3 feet. Nearshore waters choppy, becoming
a light to moderate chop.
.THURSDAY NIGHT...Northeast winds near 10 knots. Seas 2 to 3
feet. Nearshore waters a light chop.
.FRIDAY...Northeast winds near 10 knots, becoming northeast to
east and decreasing to 5 to 10 knots. Seas around 2 feet,
subsiding to 1 to 2 feet. Nearshore waters a light chop, becoming
smooth to a light chop.
.FRIDAY NIGHT...Northeast to east winds 5 to 10 knots. Seas
around 1 foot. Nearshore waters smooth to a light chop.
.SATURDAY...Northeast to east winds 5 to 10 knots. Seas around
1 foot. Nearshore waters smooth to a light chop.
.SATURDAY NIGHT...East winds 5 to 10 knots. Seas around 1 foot.
Nearshore waters smooth to a light chop.
$$
GMZ052>055-072>075-232130-
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-
429 AM EST Tue Dec 23 2025
...SMALL CRAFT ADVISORY IN EFFECT...
.TODAY...Northeast to east winds near 25 knots, decreasing to 20
to 25 knots. Seas 8 to 11 feet, occasionally to 14 feet,
subsiding to 7 to 10 feet, occasionally to 12 feet. Wave Detail:
Northeast to east 9 feet at 8 seconds. Isolated showers.
.TONIGHT...Northeast to east winds 20 to 25 knots. Seas 6 to
9 feet, occasionally to 11 feet. Wave Detail: Northeast to east 8
feet at 7 seconds. Isolated showers.
.WEDNESDAY...Northeast to east winds near 20 knots. Seas 5 to
7 feet, occasionally to 9 feet. Wave Detail: Northeast to east 7
feet at 7 seconds. Isolated showers.
.WEDNESDAY NIGHT...Northeast to east winds near 20 knots. Seas
5 to 7 feet, occasionally to 9 feet.
.THURSDAY...Northeast to east winds 15 to 20 knots, decreasing to
near 15 knots. Seas 4 to 7 feet, occasionally to 8 feet,
subsiding to 3 to 6 feet, occasionally to 7 feet.
.THURSDAY NIGHT...Northeast to east winds 10 to 15 knots. Seas 2
to 4 feet, occasionally to 5 feet. Isolated showers.
.FRIDAY...Northeast to east winds near 10 knots. Seas 2 to
3 feet.
.FRIDAY NIGHT THROUGH SATURDAY NIGHT...East winds near 10 knots.
Seas around 2 feet.
$$
GMZ033-034-232130-
Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM
out and beyond 5 fathoms-
Gulf of America including Dry Tortugas and Rebecca Shoal Channel-
429 AM EST Tue Dec 23 2025
...SMALL CRAFT ADVISORY IN EFFECT...
.TODAY...Northeast to east winds 20 to 25 knots, decreasing to 15
to 20 knots this afternoon. Seas 4 to 6 feet, occasionally to 8
feet, subsiding to 3 to 5 feet, occasionally to 6 feet. Wave
Detail: Northeast to east 4 feet at 5 seconds. Isolated showers.
.TONIGHT...Northeast to east winds 15 to 20 knots, increasing to
near 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave
Detail: Northeast to east 4 feet at 5 seconds. Isolated showers.
.WEDNESDAY...Northeast winds near 20 knots, decreasing to 15 to
20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail:
Northeast to east 4 feet at 5 seconds.
.WEDNESDAY NIGHT...Northeast winds near 15 knots, becoming northeast
to east and increasing to 15 to 20 knots after midnight. Seas 2
to 4 feet, occasionally to 5 feet.
.THURSDAY...Northeast winds 15 to 20 knots, becoming north to
northeast and decreasing to 10 to 15 knots in the afternoon. Seas
2 to 4 feet, occasionally to 5 feet, subsiding to 2 to 3 feet.
.THURSDAY NIGHT...North to northeast winds near 10 knots. Seas
2 to 3 feet, subsiding to 1 to 2 feet.
.FRIDAY...Northeast winds near 10 knots, decreasing to 5 to 10
knots. Seas 1 to 2 feet, subsiding to around 1 foot.
.FRIDAY NIGHT...Northeast winds 5 to 10 knots. Seas around 1
foot.
.SATURDAY AND SATURDAY NIGHT...Northeast to east winds 5 to 10
knots. Seas around 1 foot.
$$
MJV
CWFKEY
Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
429 AM EST Tue Dec 23 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.
GMZ005-232130-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
429 AM EST Tue Dec 23 2025
.SYNOPSIS...A sprawling high pressure system centered over the
western North Atlantic will support fresh to strong northeast to
east breezes across Florida Keys coastal waters today. Thereafter,
high pressure areas north of the Florida Keys will fluctuate in
both position and intensity. Moderate to fresh northeast to east
breezes will prevail across Keys coastal waters through mid week,
diminishing thereafter.
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.
$$
GMZ031-232130-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
429 AM EST Tue Dec 23 2025
...SMALL CRAFT ADVISORY IN EFFECT...
.TODAY...Northeast to east winds 20 to 25 knots, decreasing to
near 20 knots. Bay waters very rough, becoming rough. Isolated
showers.
.TONIGHT...Northeast to east winds near 20 knots, decreasing to
15 to 20 knots. Bay waters rough, becoming choppy. Isolated
showers.
.WEDNESDAY...Northeast to east winds 15 to 20 knots. Bay waters
choppy.
.WEDNESDAY NIGHT...Northeast to east winds 15 to 20 knots,
becoming northeast and decreasing to near 15 knots. Bay waters
choppy, becoming a moderate chop.
.THURSDAY...Northeast winds near 15 knots, decreasing to near 10
knots in the afternoon. Bay waters a moderate chop, becoming a
light chop.
.THURSDAY NIGHT...North to northeast winds 5 to 10 knots. Bay
waters smooth to a light chop.
.FRIDAY...North to northeast winds 5 to 10 knots, becoming east
and decreasing to near 5 knots. Bay waters smooth to a light
chop, becoming smooth.
.FRIDAY NIGHT...East winds near 5 knots, becoming north to
northeast. Bay waters smooth.
.SATURDAY...North to northeast winds 5 to 10 knots, becoming east.
Bay waters smooth to a light chop.
.SATURDAY NIGHT...Northeast to east winds near 5 knots. Bay
waters smooth.
$$
GMZ032-035-232130-
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-
429 AM EST Tue Dec 23 2025
...SMALL CRAFT ADVISORY IN EFFECT...
.TODAY...Northeast to east winds 20 to 25 knots, decreasing to
near 20 knots. Seas 2 to 4 feet, occasionally to 5 feet, except 4
to 6 feet, occasionally to 8 feet west of the Marquesas Keys.
Nearshore waters very rough, becoming rough. Isolated showers.
.TONIGHT...Northeast to east winds near 20 knots. Seas 2 to
3 feet, except around 4 feet, occasionally to 5 feet west of the
Marquesas Keys. Nearshore waters rough. Isolated showers.
.WEDNESDAY...Northeast to east winds 15 to 20 knots. Seas 2 to 4
feet, occasionally to 5 feet, except 3 to 5 feet, occasionally to
6 feet west of the Marquesas Keys. Nearshore waters choppy.
.WEDNESDAY NIGHT...Northeast to east winds 15 to 20 knots. Seas 2
to 3 feet, except 3 to 4 feet, occasionally to 5 feet west of the
Marquesas Keys. Nearshore waters choppy.
.THURSDAY...Northeast winds 15 to 20 knots, decreasing to 10 to
15 knots in the afternoon. Seas 2 to 3 feet, subsiding to 1 to 2
feet. West of the Marquesas Keys, seas 2 to 4 feet, occasionally
to 5 feet, subsiding to 2 to 3 feet. Nearshore waters choppy,
becoming a light to moderate chop.
.THURSDAY NIGHT...North to northeast winds near 10 knots. Seas 1
to 2 feet, except around 2 feet west of the Marquesas Keys.
Nearshore waters becoming a light chop.
.FRIDAY...North to northeast winds near 10 knots, becoming east
and 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...East winds 5 to 10 knots, becoming northeast.
Seas around 1 foot. Nearshore waters smooth to a light chop.
.SATURDAY...Northeast winds 5 to 10 knots, becoming northeast to
east. Seas around 1 foot. Nearshore waters smooth to a light
chop.
.SATURDAY NIGHT...Northeast to east winds 5 to 10 knots. Seas
around 1 foot. Nearshore waters smooth to a light chop.
$$
GMZ042>044-232130-
Hawk Channel from Ocean Reef to Craig Key out to the reef-
Hawk Channel from Craig Key to west end of Seven Mile Bridge out
to the reef-
Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal
out to the reef-
429 AM EST Tue Dec 23 2025
...SMALL CRAFT ADVISORY IN EFFECT...
.TODAY...Northeast to east winds 20 to 25 knots, decreasing to
near 20 knots. Seas 4 to 6 feet, occasionally to 8 feet.
Nearshore waters very rough, becoming rough. Isolated showers.
.TONIGHT...Northeast to east winds near 20 knots. Seas 3 to
5 feet, occasionally to 6 feet. Nearshore waters rough. Isolated
showers.
.WEDNESDAY...Northeast to east winds 15 to 20 knots. Seas 3 to
4 feet, occasionally to 5 feet. Nearshore waters choppy.
.WEDNESDAY NIGHT...Northeast to east winds 15 to 20 knots. Seas
3 to 4 feet, occasionally to 5 feet. Nearshore waters choppy.
.THURSDAY...Northeast winds 15 to 20 knots, decreasing to 10 to
15 knots in the afternoon. Seas 2 to 4 feet, occasionally to 5
feet, subsiding to 2 to 3 feet. Nearshore waters choppy, becoming
a light to moderate chop.
.THURSDAY NIGHT...Northeast winds near 10 knots. Seas 2 to 3
feet. Nearshore waters a light chop.
.FRIDAY...Northeast winds near 10 knots, becoming northeast to
east and decreasing to 5 to 10 knots. Seas around 2 feet,
subsiding to 1 to 2 feet. Nearshore waters a light chop, becoming
smooth to a light chop.
.FRIDAY NIGHT...Northeast to east winds 5 to 10 knots. Seas
around 1 foot. Nearshore waters smooth to a light chop.
.SATURDAY...Northeast to east winds 5 to 10 knots. Seas around
1 foot. Nearshore waters smooth to a light chop.
.SATURDAY NIGHT...East winds 5 to 10 knots. Seas around 1 foot.
Nearshore waters smooth to a light chop.
$$
GMZ052>055-072>075-232130-
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-
429 AM EST Tue Dec 23 2025
...SMALL CRAFT ADVISORY IN EFFECT...
.TODAY...Northeast to east winds near 25 knots, decreasing to 20
to 25 knots. Seas 8 to 11 feet, occasionally to 14 feet,
subsiding to 7 to 10 feet, occasionally to 12 feet. Wave Detail:
Northeast to east 9 feet at 8 seconds. Isolated showers.
.TONIGHT...Northeast to east winds 20 to 25 knots. Seas 6 to
9 feet, occasionally to 11 feet. Wave Detail: Northeast to east 8
feet at 7 seconds. Isolated showers.
.WEDNESDAY...Northeast to east winds near 20 knots. Seas 5 to
7 feet, occasionally to 9 feet. Wave Detail: Northeast to east 7
feet at 7 seconds. Isolated showers.
.WEDNESDAY NIGHT...Northeast to east winds near 20 knots. Seas
5 to 7 feet, occasionally to 9 feet.
.THURSDAY...Northeast to east winds 15 to 20 knots, decreasing to
near 15 knots. Seas 4 to 7 feet, occasionally to 8 feet,
subsiding to 3 to 6 feet, occasionally to 7 feet.
.THURSDAY NIGHT...Northeast to east winds 10 to 15 knots. Seas 2
to 4 feet, occasionally to 5 feet. Isolated showers.
.FRIDAY...Northeast to east winds near 10 knots. Seas 2 to
3 feet.
.FRIDAY NIGHT THROUGH SATURDAY NIGHT...East winds near 10 knots.
Seas around 2 feet.
$$
GMZ033-034-232130-
Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM
out and beyond 5 fathoms-
Gulf of America including Dry Tortugas and Rebecca Shoal Channel-
429 AM EST Tue Dec 23 2025
...SMALL CRAFT ADVISORY IN EFFECT...
.TODAY...Northeast to east winds 20 to 25 knots, decreasing to 15
to 20 knots this afternoon. Seas 4 to 6 feet, occasionally to 8
feet, subsiding to 3 to 5 feet, occasionally to 6 feet. Wave
Detail: Northeast to east 4 feet at 5 seconds. Isolated showers.
.TONIGHT...Northeast to east winds 15 to 20 knots, increasing to
near 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave
Detail: Northeast to east 4 feet at 5 seconds. Isolated showers.
.WEDNESDAY...Northeast winds near 20 knots, decreasing to 15 to
20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail:
Northeast to east 4 feet at 5 seconds.
.WEDNESDAY NIGHT...Northeast winds near 15 knots, becoming northeast
to east and increasing to 15 to 20 knots after midnight. Seas 2
to 4 feet, occasionally to 5 feet.
.THURSDAY...Northeast winds 15 to 20 knots, becoming north to
northeast and decreasing to 10 to 15 knots in the afternoon. Seas
2 to 4 feet, occasionally to 5 feet, subsiding to 2 to 3 feet.
.THURSDAY NIGHT...North to northeast winds near 10 knots. Seas
2 to 3 feet, subsiding to 1 to 2 feet.
.FRIDAY...Northeast winds near 10 knots, decreasing to 5 to 10
knots. Seas 1 to 2 feet, subsiding to around 1 foot.
.FRIDAY NIGHT...Northeast winds 5 to 10 knots. Seas around 1
foot.
.SATURDAY AND SATURDAY NIGHT...Northeast to east winds 5 to 10
knots. Seas around 1 foot.
$$
MJV