FZUS52 KKEY 200814
CWFKEY
Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
Issued by National Weather Service Miami FL
414 AM EDT Tue May 20 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.
GMZ005-202015-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
414 AM EDT Tue May 20 2025
.SYNOPSIS...A dry pattern defined by a distant high pressure
system in the central North Atlantic and lack of other major
synoptic influences will lead to one more day of breezes shifting
from light to moderate. Winds will oscillate throughout the day
peaking overnight and lulling with daytime heating. Near nil
shower chances will persist through Wednesday. An approaching,
decaying front on Thursday will lead to an increase in rain and
thunder chances as well as a period of light and variable winds.
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.
$$
GMZ031-202015-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
414 AM EDT Tue May 20 2025
.TODAY...Southeast to south winds 10 to 15 knots, decreasing to
near 10 knots. Bay waters a light to moderate chop, becoming a
light chop.
.TONIGHT...Southeast winds near 10 knots. Bay waters a light
chop.
.WEDNESDAY...Southeast to south winds 5 to 10 knots, becoming
south to southwest in the afternoon. Bay waters smooth to a light
chop.
.WEDNESDAY NIGHT...Variable winds near 5 knots. Bay waters
smooth.
.THURSDAY...Variable winds near 5 knots, becoming south to
southwest 5 to 10 knots in the afternoon. Bay waters smooth,
becoming smooth to a light chop. Isolated showers and
thunderstorms.
.THURSDAY NIGHT...West to northwest winds 5 to 10 knots, becoming
variable near 5 knots. Bay waters smooth to a light chop,
becoming smooth. Isolated showers and thunderstorms.
.FRIDAY...Variable winds near 5 knots. Bay waters smooth.
Isolated showers and thunderstorms.
.FRIDAY NIGHT...Variable winds 5 to 10 knots, becoming east to
southeast. Bay waters smooth to a light chop. Isolated showers
and thunderstorms.
.SATURDAY...East to southeast winds near 10 knots. Bay waters a
light chop. Isolated showers and thunderstorms.
.SATURDAY NIGHT...East to southeast winds 10 to 15 knots. Bay
waters a light to moderate chop. Isolated showers and
thunderstorms.
$$
GMZ032-035-202015-
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-
414 AM EDT Tue May 20 2025
.TODAY...Southeast to south winds 10 to 15 knots, decreasing to
near 10 knots. Seas 1 to 2 feet, subsiding to around 1 foot.
Nearshore waters a light to moderate chop, becoming a light chop.
.TONIGHT...Southeast winds near 10 knots. Seas around 1 foot.
Nearshore waters a light chop.
.WEDNESDAY...Southeast to south winds 5 to 10 knots, becoming
variable near 5 knots in the afternoon. Seas 1 foot or less.
Nearshore waters smooth to a light chop, becoming smooth.
.WEDNESDAY NIGHT...Variable winds near 5 knots. Seas 1 foot or
less. Nearshore waters smooth.
.THURSDAY...Variable winds near 5 knots, becoming west to
northwest 5 to 10 knots late. 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 northeast to east near 5 knots. Seas 1 foot or less.
Nearshore waters smooth to a light chop, becoming smooth. Isolated
showers and thunderstorms.
.FRIDAY...Variable winds near 5 knots. Seas 1 foot or less.
Nearshore waters smooth. Isolated showers and thunderstorms.
.FRIDAY NIGHT...North winds 5 to 10 knots, becoming northeast to
east after midnight. Seas 1 foot or less. Nearshore waters 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 to southeast winds 10 to 15 knots. Seas
building to 1 to 2 feet. Nearshore waters a light to moderate
chop. Isolated showers and thunderstorms.
$$
GMZ042>044-202015-
Hawk Channel from Ocean Reef to Craig Key out to the reef-
Hawk Channel from Craig Key to west end of Seven Mile Bridge out
to the reef-
Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal
out to the reef-
414 AM EDT Tue May 20 2025
.TODAY...Southeast to south winds 10 to 15 knots, decreasing to
near 10 knots. Seas 2 to 3 feet, subsiding to 1 to 2 feet.
Nearshore waters a light to moderate chop, becoming a light chop.
.TONIGHT...East to southeast winds near 10 knots. Seas 1 to 2
feet. Nearshore waters a light chop.
.WEDNESDAY...Southeast winds near 10 knots, becoming variable 5 to
10 knots in the afternoon. Seas 1 to 2 feet. Nearshore waters a
light chop, becoming smooth to a light chop.
.WEDNESDAY NIGHT...Variable winds near 5 knots. Seas around 1
foot. Nearshore waters smooth.
.THURSDAY...Variable winds increasing to 5 to 10 knots. Seas
around 1 foot. Nearshore waters becoming smooth to a light chop.
Isolated showers and thunderstorms.
.THURSDAY NIGHT...Northwest to north winds 5 to 10 knots,
becoming east to southeast. Seas around 1 foot. Nearshore waters
smooth to a light chop. Isolated showers and thunderstorms.
.FRIDAY...Winds becoming variable near 5 knots. Seas around 1
foot. Nearshore waters smooth. Isolated showers and
thunderstorms.
.FRIDAY NIGHT...Winds becoming northeast to east and increasing to
5 to 10 knots. Seas around 1 foot. Nearshore waters becoming
smooth to a light chop. Isolated showers and thunderstorms.
.SATURDAY...East to southeast winds near 10 knots. Seas 1 to
2 feet. Nearshore waters a light chop. Isolated showers and
thunderstorms.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas building to 2 to
3 feet. Nearshore waters a light to moderate chop. Isolated
showers and thunderstorms.
$$
GMZ052>055-072>075-202015-
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-
414 AM EDT Tue May 20 2025
.TODAY...Southeast winds 10 to 15 knots, becoming east to
southeast. Seas 2 to 3 feet. Wave Detail: East to southeast 3
feet at 5 seconds.
.TONIGHT...East to southeast winds 10 to 15 knots. Seas 2 to
3 feet. Wave Detail: East to southeast 2 feet at 4 seconds.
.WEDNESDAY...East to southeast winds near 10 knots, becoming
northeast to east 5 to 10 knots in the afternoon. Seas around 2
feet, subsiding to 1 to 2 feet. Wave Detail: East to southeast 2
feet at 4 seconds.
.WEDNESDAY NIGHT...East to southeast winds 5 to 10 knots. Seas
1 to 2 feet.
.THURSDAY...East winds 5 to 10 knots. Seas around 1 foot.
Isolated showers and thunderstorms.
.THURSDAY NIGHT...Northeast to east winds near 10 knots, becoming
east to southeast. Seas around 1 foot. Isolated showers and
thunderstorms.
.FRIDAY...East to southeast winds 5 to 10 knots, becoming
northeast to east. Seas around 1 foot. Isolated showers and
thunderstorms.
.FRIDAY NIGHT...Northeast to east winds increasing to near 10
knots. Seas building to 1 to 2 feet. Isolated showers and
thunderstorms.
.SATURDAY...East winds 10 to 15 knots. Seas building to 2 to 3
feet. Isolated showers and thunderstorms.
.SATURDAY NIGHT...East to southeast winds 10 to 15 knots. Seas 2
to 3 feet. Isolated showers and thunderstorms.
$$
GMZ033-034-202015-
Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM
out and beyond 5 fathoms-
Gulf of America including Dry Tortugas and Rebecca Shoal Channel-
414 AM EDT Tue May 20 2025
.TODAY...Southeast to south winds 10 to 15 knots, decreasing to
near 10 knots. Seas 1 to 2 feet. Wave Detail: Southeast 2 feet at
4 seconds.
.TONIGHT...East to southeast winds 5 to 10 knots, becoming
southeast to south near 10 knots. Seas 1 to 2 feet. Wave Detail:
East to southeast 1 foot at 4 seconds.
.WEDNESDAY...Southeast to south winds 5 to 10 knots, becoming
variable near 5 knots in the afternoon. Seas around 1 foot. Wave
Detail: South 1 foot at 4 seconds.
.WEDNESDAY NIGHT...North to northeast winds 5 to 10 knots,
becoming northeast to east near 5 knots. Seas around 1 foot.
.THURSDAY...Northeast winds near 5 knots, becoming northwest 5 to
10 knots late. Seas around 1 foot.
.THURSDAY NIGHT...Northwest to north winds near 10 knots,
becoming northeast 5 to 10 knots. Seas around 1 foot. Isolated
showers and thunderstorms.
.FRIDAY...Variable winds near 5 knots, becoming northwest 5 to 10
knots in the afternoon. Seas around 1 foot. Isolated showers and
thunderstorms.
.FRIDAY NIGHT...Northwest to north winds near 10 knots, becoming
north to northeast. Seas around 1 foot.
.SATURDAY...East winds near 10 knots. Seas around 1 foot.
Isolated showers and thunderstorms.
.SATURDAY NIGHT...East winds increasing to to 10 to 15 knots.
Seas 1 to 2 feet. Isolated showers and thunderstorms.
$$
CWFKEY
Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
Issued by National Weather Service Miami FL
414 AM EDT Tue May 20 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.
GMZ005-202015-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
414 AM EDT Tue May 20 2025
.SYNOPSIS...A dry pattern defined by a distant high pressure
system in the central North Atlantic and lack of other major
synoptic influences will lead to one more day of breezes shifting
from light to moderate. Winds will oscillate throughout the day
peaking overnight and lulling with daytime heating. Near nil
shower chances will persist through Wednesday. An approaching,
decaying front on Thursday will lead to an increase in rain and
thunder chances as well as a period of light and variable winds.
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.
$$
GMZ031-202015-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
414 AM EDT Tue May 20 2025
.TODAY...Southeast to south winds 10 to 15 knots, decreasing to
near 10 knots. Bay waters a light to moderate chop, becoming a
light chop.
.TONIGHT...Southeast winds near 10 knots. Bay waters a light
chop.
.WEDNESDAY...Southeast to south winds 5 to 10 knots, becoming
south to southwest in the afternoon. Bay waters smooth to a light
chop.
.WEDNESDAY NIGHT...Variable winds near 5 knots. Bay waters
smooth.
.THURSDAY...Variable winds near 5 knots, becoming south to
southwest 5 to 10 knots in the afternoon. Bay waters smooth,
becoming smooth to a light chop. Isolated showers and
thunderstorms.
.THURSDAY NIGHT...West to northwest winds 5 to 10 knots, becoming
variable near 5 knots. Bay waters smooth to a light chop,
becoming smooth. Isolated showers and thunderstorms.
.FRIDAY...Variable winds near 5 knots. Bay waters smooth.
Isolated showers and thunderstorms.
.FRIDAY NIGHT...Variable winds 5 to 10 knots, becoming east to
southeast. Bay waters smooth to a light chop. Isolated showers
and thunderstorms.
.SATURDAY...East to southeast winds near 10 knots. Bay waters a
light chop. Isolated showers and thunderstorms.
.SATURDAY NIGHT...East to southeast winds 10 to 15 knots. Bay
waters a light to moderate chop. Isolated showers and
thunderstorms.
$$
GMZ032-035-202015-
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-
414 AM EDT Tue May 20 2025
.TODAY...Southeast to south winds 10 to 15 knots, decreasing to
near 10 knots. Seas 1 to 2 feet, subsiding to around 1 foot.
Nearshore waters a light to moderate chop, becoming a light chop.
.TONIGHT...Southeast winds near 10 knots. Seas around 1 foot.
Nearshore waters a light chop.
.WEDNESDAY...Southeast to south winds 5 to 10 knots, becoming
variable near 5 knots in the afternoon. Seas 1 foot or less.
Nearshore waters smooth to a light chop, becoming smooth.
.WEDNESDAY NIGHT...Variable winds near 5 knots. Seas 1 foot or
less. Nearshore waters smooth.
.THURSDAY...Variable winds near 5 knots, becoming west to
northwest 5 to 10 knots late. 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 northeast to east near 5 knots. Seas 1 foot or less.
Nearshore waters smooth to a light chop, becoming smooth. Isolated
showers and thunderstorms.
.FRIDAY...Variable winds near 5 knots. Seas 1 foot or less.
Nearshore waters smooth. Isolated showers and thunderstorms.
.FRIDAY NIGHT...North winds 5 to 10 knots, becoming northeast to
east after midnight. Seas 1 foot or less. Nearshore waters 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 to southeast winds 10 to 15 knots. Seas
building to 1 to 2 feet. Nearshore waters a light to moderate
chop. Isolated showers and thunderstorms.
$$
GMZ042>044-202015-
Hawk Channel from Ocean Reef to Craig Key out to the reef-
Hawk Channel from Craig Key to west end of Seven Mile Bridge out
to the reef-
Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal
out to the reef-
414 AM EDT Tue May 20 2025
.TODAY...Southeast to south winds 10 to 15 knots, decreasing to
near 10 knots. Seas 2 to 3 feet, subsiding to 1 to 2 feet.
Nearshore waters a light to moderate chop, becoming a light chop.
.TONIGHT...East to southeast winds near 10 knots. Seas 1 to 2
feet. Nearshore waters a light chop.
.WEDNESDAY...Southeast winds near 10 knots, becoming variable 5 to
10 knots in the afternoon. Seas 1 to 2 feet. Nearshore waters a
light chop, becoming smooth to a light chop.
.WEDNESDAY NIGHT...Variable winds near 5 knots. Seas around 1
foot. Nearshore waters smooth.
.THURSDAY...Variable winds increasing to 5 to 10 knots. Seas
around 1 foot. Nearshore waters becoming smooth to a light chop.
Isolated showers and thunderstorms.
.THURSDAY NIGHT...Northwest to north winds 5 to 10 knots,
becoming east to southeast. Seas around 1 foot. Nearshore waters
smooth to a light chop. Isolated showers and thunderstorms.
.FRIDAY...Winds becoming variable near 5 knots. Seas around 1
foot. Nearshore waters smooth. Isolated showers and
thunderstorms.
.FRIDAY NIGHT...Winds becoming northeast to east and increasing to
5 to 10 knots. Seas around 1 foot. Nearshore waters becoming
smooth to a light chop. Isolated showers and thunderstorms.
.SATURDAY...East to southeast winds near 10 knots. Seas 1 to
2 feet. Nearshore waters a light chop. Isolated showers and
thunderstorms.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas building to 2 to
3 feet. Nearshore waters a light to moderate chop. Isolated
showers and thunderstorms.
$$
GMZ052>055-072>075-202015-
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-
414 AM EDT Tue May 20 2025
.TODAY...Southeast winds 10 to 15 knots, becoming east to
southeast. Seas 2 to 3 feet. Wave Detail: East to southeast 3
feet at 5 seconds.
.TONIGHT...East to southeast winds 10 to 15 knots. Seas 2 to
3 feet. Wave Detail: East to southeast 2 feet at 4 seconds.
.WEDNESDAY...East to southeast winds near 10 knots, becoming
northeast to east 5 to 10 knots in the afternoon. Seas around 2
feet, subsiding to 1 to 2 feet. Wave Detail: East to southeast 2
feet at 4 seconds.
.WEDNESDAY NIGHT...East to southeast winds 5 to 10 knots. Seas
1 to 2 feet.
.THURSDAY...East winds 5 to 10 knots. Seas around 1 foot.
Isolated showers and thunderstorms.
.THURSDAY NIGHT...Northeast to east winds near 10 knots, becoming
east to southeast. Seas around 1 foot. Isolated showers and
thunderstorms.
.FRIDAY...East to southeast winds 5 to 10 knots, becoming
northeast to east. Seas around 1 foot. Isolated showers and
thunderstorms.
.FRIDAY NIGHT...Northeast to east winds increasing to near 10
knots. Seas building to 1 to 2 feet. Isolated showers and
thunderstorms.
.SATURDAY...East winds 10 to 15 knots. Seas building to 2 to 3
feet. Isolated showers and thunderstorms.
.SATURDAY NIGHT...East to southeast winds 10 to 15 knots. Seas 2
to 3 feet. Isolated showers and thunderstorms.
$$
GMZ033-034-202015-
Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM
out and beyond 5 fathoms-
Gulf of America including Dry Tortugas and Rebecca Shoal Channel-
414 AM EDT Tue May 20 2025
.TODAY...Southeast to south winds 10 to 15 knots, decreasing to
near 10 knots. Seas 1 to 2 feet. Wave Detail: Southeast 2 feet at
4 seconds.
.TONIGHT...East to southeast winds 5 to 10 knots, becoming
southeast to south near 10 knots. Seas 1 to 2 feet. Wave Detail:
East to southeast 1 foot at 4 seconds.
.WEDNESDAY...Southeast to south winds 5 to 10 knots, becoming
variable near 5 knots in the afternoon. Seas around 1 foot. Wave
Detail: South 1 foot at 4 seconds.
.WEDNESDAY NIGHT...North to northeast winds 5 to 10 knots,
becoming northeast to east near 5 knots. Seas around 1 foot.
.THURSDAY...Northeast winds near 5 knots, becoming northwest 5 to
10 knots late. Seas around 1 foot.
.THURSDAY NIGHT...Northwest to north winds near 10 knots,
becoming northeast 5 to 10 knots. Seas around 1 foot. Isolated
showers and thunderstorms.
.FRIDAY...Variable winds near 5 knots, becoming northwest 5 to 10
knots in the afternoon. Seas around 1 foot. Isolated showers and
thunderstorms.
.FRIDAY NIGHT...Northwest to north winds near 10 knots, becoming
north to northeast. Seas around 1 foot.
.SATURDAY...East winds near 10 knots. Seas around 1 foot.
Isolated showers and thunderstorms.
.SATURDAY NIGHT...East winds increasing to to 10 to 15 knots.
Seas 1 to 2 feet. Isolated showers and thunderstorms.
$$