FZUS52 KKEY 211429
CWFKEY
Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
Issued by National Weather Service Miami FL
1029 AM EDT Wed May 21 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.
GMZ005-220230-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1029 AM EDT Wed May 21 2025
.SYNOPSIS...The Florida Keys and surrounding coastal waters will
enter a col region later today resulting winds boxing around the
compass through Friday. An approaching, decaying front on
Thursday will bring a threat for isolated thunderstorms. Rain and
thunder chances will gradually increase by Saturday along with
freshening easterly breezes.
The Approximate Shoreward Edge of the Gulf Stream as of May
10th...
22 NM South of Dry Tortugas Light...on Loggerhead Key.
8 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
6 NM South of Sand Key Light...off Key West.
5 NM South of Looe Key...off Big Pine Key.
7 NM South of Sombrero Key Light...off Marathon.
12 NM Southeast of Alligator Reef Light...off Islamorada.
8 NM Southeast of Molasses Reef Light...off Key Largo.
2 NM East of Carysfort Reef Light...off Ocean Reef.
Gulf Stream Information Courtesy of the Naval Oceanographic
Office.
$$
GMZ031-220230-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
1029 AM EDT Wed May 21 2025
.THIS AFTERNOON...Southeast to south winds 5 to 10 knots,
becoming southwest. Bay waters smooth to a light chop.
.TONIGHT...Winds becoming variable near 5 knots. Bay waters
becoming smooth.
.THURSDAY...Southeast winds near 5 knots, becoming southwest 5 to
10 knots in the afternoon. Bay waters smooth, becoming smooth to
a light chop. Isolated showers and thunderstorms.
.THURSDAY NIGHT...Northwest to north winds 5 to 10 knots,
becoming southeast to south after midnight. Bay waters smooth to
a light chop. Isolated showers and thunderstorms.
.FRIDAY...Southeast to south winds 5 to 10 knots, becoming south
to southwest. Bay waters smooth to a light chop. Isolated showers
and thunderstorms.
.FRIDAY NIGHT...Winds becoming east to southeast and increasing to
near 10 knots. Bay waters becoming a light chop. Isolated showers
and thunderstorms.
.SATURDAY...East to southeast winds near 10 knots. Bay waters a
light chop. Isolated showers and thunderstorms.
.SATURDAY NIGHT...East winds 10 to 15 knots. Bay waters a light
to moderate chop. Scattered showers and isolated thunderstorms.
.SUNDAY AND SUNDAY NIGHT...East to southeast winds near 15 knots.
Bay waters a moderate chop. Isolated showers and thunderstorms.
$$
GMZ032-035-220230-
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-
1029 AM EDT Wed May 21 2025
.THIS AFTERNOON...Southeast to south winds 5 to 10 knots,
becoming west to northwest. Seas around 1 foot, subsiding to 1
foot or less. Nearshore waters smooth to a light chop.
.TONIGHT...Northwest to north winds 5 to 10 knots, becoming
northeast to east near 5 knots. Seas 1 foot or less. Nearshore
waters smooth to a light chop, becoming smooth.
.THURSDAY...Variable winds near 5 knots, becoming southwest to
west 5 to 10 knots in the afternoon. Seas 1 foot or less.
Nearshore waters smooth, becoming smooth to a light chop.
Isolated showers and thunderstorms.
.THURSDAY NIGHT...Northwest to north winds 5 to 10 knots,
becoming east to southeast. Seas 1 foot or less. Nearshore waters
smooth to a light chop. Isolated showers and thunderstorms.
.FRIDAY...Southeast to south winds 5 to 10 knots, becoming
variable in the afternoon. Seas 1 foot or less. Nearshore waters
smooth to a light chop. Isolated showers and thunderstorms.
.FRIDAY NIGHT...Variable winds near 5 knots, becoming east 5 to 10
knots. Seas 1 foot or less. Nearshore waters smooth, becoming smooth
to a light chop. Isolated showers and thunderstorms.
.SATURDAY...East to southeast winds near 10 knots. Seas around 1
foot. Nearshore waters a light chop. Isolated showers and
thunderstorms.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas 1 to 2 feet.
Nearshore waters a light to moderate chop. Isolated showers and
thunderstorms.
.SUNDAY AND SUNDAY NIGHT...East to southeast winds near 15 knots.
Seas 1 to 2 feet, except 2 to 3 feet west of the Marquesas Keys.
Nearshore waters a moderate chop. Isolated showers and
thunderstorms.
$$
GMZ042>044-220230-
Hawk Channel from Ocean Reef to Craig Key out to the reef-
Hawk Channel from Craig Key to west end of Seven Mile Bridge out
to the reef-
Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal
out to the reef-
1029 AM EDT Wed May 21 2025
.THIS AFTERNOON...Southeast to south winds near 10 knots,
becoming variable 5 to 10 knots. Seas around 1 foot. Nearshore
waters a light chop, becoming smooth to a light chop.
.TONIGHT...Variable winds 5 to 10 knots, decreasing to near 5
knots. Seas around 1 foot. Nearshore waters smooth to a light
chop, becoming smooth.
.THURSDAY...East to southeast winds near 5 knots, becoming
variable in the afternoon. Seas around 1 foot. Nearshore waters
smooth. Isolated showers and thunderstorms.
.THURSDAY NIGHT...North to northeast winds near 5 knots, becoming
east to southeast 5 to 10 knots. Seas around 1 foot. Nearshore
waters smooth, becoming smooth to a light chop. Isolated showers
and thunderstorms.
.FRIDAY...Southeast winds 5 to 10 knots, becoming variable. Seas
around 1 foot. Nearshore waters smooth to a light chop. Isolated
showers and thunderstorms.
.FRIDAY NIGHT...Winds becoming east and increasing to near 10
knots. Seas around 1 foot. Nearshore waters becoming a light
chop. Isolated showers and thunderstorms.
.SATURDAY...East to southeast winds near 10 knots. Seas building
to 1 to 2 feet. Nearshore waters a light chop. Isolated showers
and thunderstorms.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas 1 to 3 feet.
Nearshore waters a light to moderate chop. Isolated showers and
thunderstorms.
.SUNDAY...East to southeast winds near 15 knots. Seas 2 to
3 feet. Nearshore waters a moderate chop. Isolated showers and
thunderstorms.
.SUNDAY NIGHT...East to southeast winds 15 to 20 knots. Seas 2 to
4 feet, occasionally to 5 feet. Nearshore waters choppy. Isolated
showers and thunderstorms.
$$
GMZ052>055-072>075-220230-
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-
1029 AM EDT Wed May 21 2025
.THIS AFTERNOON...Southeast winds near 10 knots, becoming
northeast to east 5 to 10 knots. Seas 1 to 2 feet, subsiding to
around 1 foot. Wave Detail: East 1 foot at 4 seconds. Isolated
showers.
.TONIGHT...Northeast to east winds 5 to 10 knots, becoming east to
southeast. Seas around 1 foot. Wave Detail: East 1 foot at 4
seconds. Isolated showers and thunderstorms.
.THURSDAY...East to southeast winds 5 to 10 knots, becoming
northeast to east. Seas around 1 foot. Wave Detail: East to
southeast 1 foot at 3 seconds. Isolated showers and thunderstorms.
.THURSDAY NIGHT...Northeast to east winds 5 to 10 knots, becoming
east to southeast near 10 knots. Seas around 1 foot. Isolated
showers and thunderstorms.
.FRIDAY...East to southeast winds near 10 knots, becoming
northeast to east 5 to 10 knots. Seas around 1 foot.
.FRIDAY NIGHT...Northeast to east winds near 10 knots, becoming
east. Seas building to 1 to 2 feet. Isolated showers and
thunderstorms.
.SATURDAY...East winds near 10 knots. Seas building to around 2
feet. Isolated showers and thunderstorms.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.
Isolated showers and thunderstorms.
.SUNDAY...East winds near 15 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Isolated showers and thunderstorms.
.SUNDAY NIGHT...East winds 15 to 20 knots. Seas 3 to 5 feet.
Isolated showers and thunderstorms.
$$
GMZ033-034-220230-
Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM
out and beyond 5 fathoms-
Gulf of America including Dry Tortugas and Rebecca Shoal Channel-
1029 AM EDT Wed May 21 2025
.THIS AFTERNOON...Southeast to south winds 5 to 10 knots,
becoming variable near 5 knots. Seas around 1 foot. Wave Detail:
Southeast to south 1 foot at 3 seconds.
.TONIGHT...Northwest to north winds 5 to 10 knots, becoming
northeast to east near 5 knots. Seas around 1 foot.
.THURSDAY...Northeast winds near 5 knots, becoming northwest to
north 5 to 10 knots. Seas around 1 foot. Isolated showers and
thunderstorms.
.THURSDAY NIGHT...Northwest to north winds near 10 knots,
becoming northeast to east 5 to 10 knots. Seas around 1 foot.
Isolated showers and thunderstorms.
.FRIDAY...Variable winds near 5 knots, becoming north to
northeast in the afternoon. Seas around 1 foot. Isolated showers
and thunderstorms.
.FRIDAY NIGHT...North to northeast winds 5 to 10 knots, becoming
east after midnight. Seas around 1 foot. Isolated showers and
thunderstorms.
.SATURDAY...East to southeast winds 5 to 10 knots. Seas around
1 foot. Isolated showers and thunderstorms.
.SATURDAY NIGHT...East winds near 10 knots, increasing to 10 to
15 knots. Seas 1 to 2 feet, building to around 2 feet. Isolated
showers and thunderstorms.
.SUNDAY...East to southeast winds 10 to 15 knots. Seas around
2 feet. Isolated showers and thunderstorms.
.SUNDAY NIGHT...East to southeast winds 15 to 20 knots. Seas 2 to
3 feet. Isolated showers and thunderstorms.
$$
CWFKEY
Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
Issued by National Weather Service Miami FL
1029 AM EDT Wed May 21 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.
GMZ005-220230-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1029 AM EDT Wed May 21 2025
.SYNOPSIS...The Florida Keys and surrounding coastal waters will
enter a col region later today resulting winds boxing around the
compass through Friday. An approaching, decaying front on
Thursday will bring a threat for isolated thunderstorms. Rain and
thunder chances will gradually increase by Saturday along with
freshening easterly breezes.
The Approximate Shoreward Edge of the Gulf Stream as of May
10th...
22 NM South of Dry Tortugas Light...on Loggerhead Key.
8 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
6 NM South of Sand Key Light...off Key West.
5 NM South of Looe Key...off Big Pine Key.
7 NM South of Sombrero Key Light...off Marathon.
12 NM Southeast of Alligator Reef Light...off Islamorada.
8 NM Southeast of Molasses Reef Light...off Key Largo.
2 NM East of Carysfort Reef Light...off Ocean Reef.
Gulf Stream Information Courtesy of the Naval Oceanographic
Office.
$$
GMZ031-220230-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
1029 AM EDT Wed May 21 2025
.THIS AFTERNOON...Southeast to south winds 5 to 10 knots,
becoming southwest. Bay waters smooth to a light chop.
.TONIGHT...Winds becoming variable near 5 knots. Bay waters
becoming smooth.
.THURSDAY...Southeast winds near 5 knots, becoming southwest 5 to
10 knots in the afternoon. Bay waters smooth, becoming smooth to
a light chop. Isolated showers and thunderstorms.
.THURSDAY NIGHT...Northwest to north winds 5 to 10 knots,
becoming southeast to south after midnight. Bay waters smooth to
a light chop. Isolated showers and thunderstorms.
.FRIDAY...Southeast to south winds 5 to 10 knots, becoming south
to southwest. Bay waters smooth to a light chop. Isolated showers
and thunderstorms.
.FRIDAY NIGHT...Winds becoming east to southeast and increasing to
near 10 knots. Bay waters becoming a light chop. Isolated showers
and thunderstorms.
.SATURDAY...East to southeast winds near 10 knots. Bay waters a
light chop. Isolated showers and thunderstorms.
.SATURDAY NIGHT...East winds 10 to 15 knots. Bay waters a light
to moderate chop. Scattered showers and isolated thunderstorms.
.SUNDAY AND SUNDAY NIGHT...East to southeast winds near 15 knots.
Bay waters a moderate chop. Isolated showers and thunderstorms.
$$
GMZ032-035-220230-
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-
1029 AM EDT Wed May 21 2025
.THIS AFTERNOON...Southeast to south winds 5 to 10 knots,
becoming west to northwest. Seas around 1 foot, subsiding to 1
foot or less. Nearshore waters smooth to a light chop.
.TONIGHT...Northwest to north winds 5 to 10 knots, becoming
northeast to east near 5 knots. Seas 1 foot or less. Nearshore
waters smooth to a light chop, becoming smooth.
.THURSDAY...Variable winds near 5 knots, becoming southwest to
west 5 to 10 knots in the afternoon. Seas 1 foot or less.
Nearshore waters smooth, becoming smooth to a light chop.
Isolated showers and thunderstorms.
.THURSDAY NIGHT...Northwest to north winds 5 to 10 knots,
becoming east to southeast. Seas 1 foot or less. Nearshore waters
smooth to a light chop. Isolated showers and thunderstorms.
.FRIDAY...Southeast to south winds 5 to 10 knots, becoming
variable in the afternoon. Seas 1 foot or less. Nearshore waters
smooth to a light chop. Isolated showers and thunderstorms.
.FRIDAY NIGHT...Variable winds near 5 knots, becoming east 5 to 10
knots. Seas 1 foot or less. Nearshore waters smooth, becoming smooth
to a light chop. Isolated showers and thunderstorms.
.SATURDAY...East to southeast winds near 10 knots. Seas around 1
foot. Nearshore waters a light chop. Isolated showers and
thunderstorms.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas 1 to 2 feet.
Nearshore waters a light to moderate chop. Isolated showers and
thunderstorms.
.SUNDAY AND SUNDAY NIGHT...East to southeast winds near 15 knots.
Seas 1 to 2 feet, except 2 to 3 feet west of the Marquesas Keys.
Nearshore waters a moderate chop. Isolated showers and
thunderstorms.
$$
GMZ042>044-220230-
Hawk Channel from Ocean Reef to Craig Key out to the reef-
Hawk Channel from Craig Key to west end of Seven Mile Bridge out
to the reef-
Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal
out to the reef-
1029 AM EDT Wed May 21 2025
.THIS AFTERNOON...Southeast to south winds near 10 knots,
becoming variable 5 to 10 knots. Seas around 1 foot. Nearshore
waters a light chop, becoming smooth to a light chop.
.TONIGHT...Variable winds 5 to 10 knots, decreasing to near 5
knots. Seas around 1 foot. Nearshore waters smooth to a light
chop, becoming smooth.
.THURSDAY...East to southeast winds near 5 knots, becoming
variable in the afternoon. Seas around 1 foot. Nearshore waters
smooth. Isolated showers and thunderstorms.
.THURSDAY NIGHT...North to northeast winds near 5 knots, becoming
east to southeast 5 to 10 knots. Seas around 1 foot. Nearshore
waters smooth, becoming smooth to a light chop. Isolated showers
and thunderstorms.
.FRIDAY...Southeast winds 5 to 10 knots, becoming variable. Seas
around 1 foot. Nearshore waters smooth to a light chop. Isolated
showers and thunderstorms.
.FRIDAY NIGHT...Winds becoming east and increasing to near 10
knots. Seas around 1 foot. Nearshore waters becoming a light
chop. Isolated showers and thunderstorms.
.SATURDAY...East to southeast winds near 10 knots. Seas building
to 1 to 2 feet. Nearshore waters a light chop. Isolated showers
and thunderstorms.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas 1 to 3 feet.
Nearshore waters a light to moderate chop. Isolated showers and
thunderstorms.
.SUNDAY...East to southeast winds near 15 knots. Seas 2 to
3 feet. Nearshore waters a moderate chop. Isolated showers and
thunderstorms.
.SUNDAY NIGHT...East to southeast winds 15 to 20 knots. Seas 2 to
4 feet, occasionally to 5 feet. Nearshore waters choppy. Isolated
showers and thunderstorms.
$$
GMZ052>055-072>075-220230-
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-
1029 AM EDT Wed May 21 2025
.THIS AFTERNOON...Southeast winds near 10 knots, becoming
northeast to east 5 to 10 knots. Seas 1 to 2 feet, subsiding to
around 1 foot. Wave Detail: East 1 foot at 4 seconds. Isolated
showers.
.TONIGHT...Northeast to east winds 5 to 10 knots, becoming east to
southeast. Seas around 1 foot. Wave Detail: East 1 foot at 4
seconds. Isolated showers and thunderstorms.
.THURSDAY...East to southeast winds 5 to 10 knots, becoming
northeast to east. Seas around 1 foot. Wave Detail: East to
southeast 1 foot at 3 seconds. Isolated showers and thunderstorms.
.THURSDAY NIGHT...Northeast to east winds 5 to 10 knots, becoming
east to southeast near 10 knots. Seas around 1 foot. Isolated
showers and thunderstorms.
.FRIDAY...East to southeast winds near 10 knots, becoming
northeast to east 5 to 10 knots. Seas around 1 foot.
.FRIDAY NIGHT...Northeast to east winds near 10 knots, becoming
east. Seas building to 1 to 2 feet. Isolated showers and
thunderstorms.
.SATURDAY...East winds near 10 knots. Seas building to around 2
feet. Isolated showers and thunderstorms.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.
Isolated showers and thunderstorms.
.SUNDAY...East winds near 15 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Isolated showers and thunderstorms.
.SUNDAY NIGHT...East winds 15 to 20 knots. Seas 3 to 5 feet.
Isolated showers and thunderstorms.
$$
GMZ033-034-220230-
Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM
out and beyond 5 fathoms-
Gulf of America including Dry Tortugas and Rebecca Shoal Channel-
1029 AM EDT Wed May 21 2025
.THIS AFTERNOON...Southeast to south winds 5 to 10 knots,
becoming variable near 5 knots. Seas around 1 foot. Wave Detail:
Southeast to south 1 foot at 3 seconds.
.TONIGHT...Northwest to north winds 5 to 10 knots, becoming
northeast to east near 5 knots. Seas around 1 foot.
.THURSDAY...Northeast winds near 5 knots, becoming northwest to
north 5 to 10 knots. Seas around 1 foot. Isolated showers and
thunderstorms.
.THURSDAY NIGHT...Northwest to north winds near 10 knots,
becoming northeast to east 5 to 10 knots. Seas around 1 foot.
Isolated showers and thunderstorms.
.FRIDAY...Variable winds near 5 knots, becoming north to
northeast in the afternoon. Seas around 1 foot. Isolated showers
and thunderstorms.
.FRIDAY NIGHT...North to northeast winds 5 to 10 knots, becoming
east after midnight. Seas around 1 foot. Isolated showers and
thunderstorms.
.SATURDAY...East to southeast winds 5 to 10 knots. Seas around
1 foot. Isolated showers and thunderstorms.
.SATURDAY NIGHT...East winds near 10 knots, increasing to 10 to
15 knots. Seas 1 to 2 feet, building to around 2 feet. Isolated
showers and thunderstorms.
.SUNDAY...East to southeast winds 10 to 15 knots. Seas around
2 feet. Isolated showers and thunderstorms.
.SUNDAY NIGHT...East to southeast winds 15 to 20 knots. Seas 2 to
3 feet. Isolated showers and thunderstorms.
$$