Coastal Waters Forecast
Issued by NWS Key West, FL

Home |  Current Version |  Previous Version |  Graphics & Text |  Print | Product List |  Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29
255
FZUS52 KKEY 271434
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
1034 AM EDT Mon May 27 2024

Florida Bay, Hawk Channel and Straits of Florida from Ocean Reef
to south of Dry Tortugas, and the extreme southeastern Gulf of
Mexico, 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.

GMZ005-272045-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1034 AM EDT Mon May 27 2024

.SYNOPSIS...High pressure over the western North Atlantic will
maintain light to gentle southeast to south breezes through
Tuesday. Breezes will breifly lull this afternoon and then surge
one more time overnight into Tuesday where breezes may
occasionally become moderate. As the high slides further east into
the Atlantic, breezes will slacken and become variable for
Tuesday night and Wednesday. Another strengthening high pressure
moves across the eastern United States and builds southward
resulting in strengthening northeast to east breezes for late
week.

The Approximate Shoreward Edge of the Gulf Stream as of May 26,
2024...

50 NM South of Dry Tortugas Light...on Loggerhead Key.
47 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
41 NM South of Sand Key Light...off Key West.
27 NM South of Looe Key...off Big Pine Key.
23 NM South of Sombrero Key Light...off Marathon.
26 NM South of Alligator Reef Light...off Islamorada.
21 NM South of Molasses Reef Light...off Key Largo.

Gulf Stream Information Courtesy of the National Weather Service in
Key West.

$$

GMZ031-272045-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
1034 AM EDT Mon May 27 2024

.THIS AFTERNOON...Southeast to south winds 5 to 10 knots. Bay
waters smooth to a light chop.
.TONIGHT...Southeast to south winds 5 to 10 knots, increasing to
10 to 15 knots after midnight. Bay waters smooth to a light chop,
becoming a light to moderate chop. Isolated showers.
.TUESDAY...Southeast to south winds 5 to 10 knots, becoming south
to southwest and decreasing to near 5 knots. Bay waters smooth to
a light chop, becoming smooth. Isolated showers.
.TUESDAY NIGHT...Southwest winds near 5 knots. Bay waters smooth.
Isolated showers.
.WEDNESDAY...West winds near 5 knots, becoming south to southwest
in the afternoon. Bay waters smooth. Isolated showers.
.WEDNESDAY NIGHT...Southeast to south winds near 5 knots. Bay
waters smooth. Isolated showers.
.THURSDAY...East to southeast winds near 5 knots, increasing to 5
to 10 knots. Bay waters smooth, becoming smooth to a light chop.
Isolated showers.
.THURSDAY NIGHT AND FRIDAY...East winds near 10 knots. Bay waters
a light chop. Isolated showers and thunderstorms.
.FRIDAY NIGHT...Northeast to east winds near 10 knots, increasing
to 10 to 15 knots. Bay waters a light chop, becoming a light to
moderate chop. Isolated showers and thunderstorms.

$$

GMZ032-035-272045-
Bayside and Gulf side from Craig Key to west end of Seven Mile
Bridge-
Gulf of Mexico from west end of Seven Mile Bridge to Halfmoon
Shoal out to 5 Fathoms-
1034 AM EDT Mon May 27 2024

.THIS AFTERNOON...Southeast to south winds 5 to 10 knots,
becoming southeast. Seas 1 foot or less. Nearshore waters smooth
to a light chop.
.TONIGHT...Southeast winds 5 to 10 knots, increasing to 10 to 15
knots after midnight. Seas 1 foot or less, building to around 1
foot. Nearshore waters smooth to a light chop, becoming a light to
moderate chop.
.TUESDAY...Southeast to south winds 5 to 10 knots, becoming
variable and decreasing to near 5 knots. Seas around 1 foot,
subsiding to 1 foot or less. Nearshore waters smooth to a light
chop, becoming smooth. Isolated showers.
.TUESDAY NIGHT AND WEDNESDAY...Variable winds near 5 knots. Seas
1 foot or less. Nearshore waters smooth. Isolated showers.
.WEDNESDAY NIGHT...Southwest to west winds near 5 knots, becoming
east to southeast after midnight. Seas 1 foot or less. Nearshore
waters smooth. Isolated showers.
.THURSDAY...East to southeast winds near 5 knots, increasing to 5
to 10 knots. Seas 1 foot or less. Nearshore waters smooth,
becoming smooth to a light chop. Isolated showers.
.THURSDAY NIGHT...East winds 5 to 10 knots, increasing to 10 to
15 knots after midnight. Seas 1 foot or less, building to around
1 foot, except building to 1 to 2 feet west of the Marquesas Keys.
Nearshore waters smooth to a light chop, becoming a light to
moderate chop. Isolated showers and thunderstorms.
.FRIDAY...East winds near 10 knots. Seas around 1 foot. Nearshore
waters a light chop. Isolated showers and thunderstorms.
.FRIDAY NIGHT...Northeast to east winds near 10 knots, increasing
to 10 to 15 knots. Seas around 1 foot, building to 1 to 2 feet.
Nearshore waters a light chop, becoming a light to moderate chop.
Isolated showers and thunderstorms.

$$

GMZ042>044-272045-
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-
1034 AM EDT Mon May 27 2024

.THIS AFTERNOON...Southeast winds 5 to 10 knots. Seas around 1
foot. Nearshore waters smooth to light chop.
.TONIGHT...East to southeast winds 5 to 10 knots, becoming
southeast and increasing to 10 to 15 knots after midnight. Seas 1
to 2 feet, building to around 2 feet. Nearshore waters smooth to
a light chop, becoming a light to moderate chop.
.TUESDAY...Southeast winds near 10 knots, becoming variable and
decreasing to near 5 knots. Seas 1 to 2 feet, subsiding to around
1 foot. Nearshore waters a light chop, becoming smooth. Isolated
showers.
.TUESDAY NIGHT AND WEDNESDAY...Variable winds near 5 knots. Seas
1 foot or less. Nearshore waters smooth. Isolated showers.
.WEDNESDAY NIGHT...Variable winds near 5 knots, becoming east to
southeast. Seas 1 foot or less. Nearshore waters smooth. Isolated
showers.
.THURSDAY...East to southeast winds near 5 knots, becoming east
and increasing to 5 to 10 knots. Seas 1 foot or less, building to
around 1 foot. Nearshore waters smooth, becoming smooth to a
light chop. Isolated showers.
.THURSDAY NIGHT...East winds near 10 knots, increasing to 10 to
15 knots after midnight. Seas 1 to 2 feet. Nearshore waters a
light chop, becoming a light to moderate chop. Isolated showers
and thunderstorms.
.FRIDAY...East winds near 10 knots. Seas 1 to 2 feet. Nearshore
waters a light chop. Isolated showers and thunderstorms.
.FRIDAY NIGHT...Northeast to east winds near 10 knots, increasing
to 10 to 15 knots. Seas 1 to 2 feet, building to 1 to 3 feet.
Nearshore waters a light chop, becoming a light to moderate chop.
Isolated showers and thunderstorms.

$$

GMZ052>055-072>075-272045-
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-
1034 AM EDT Mon May 27 2024

.THIS AFTERNOON...Southeast to south winds near 10 knots,
becoming east to southeast and decreasing to 5 to 10 knots. Seas 1
to 2 feet. Wave Detail: East to southeast 1 foot at 4 seconds.
.TONIGHT...East winds near 10 knots, becoming east to southeast
and increasing to 10 to 15 knots. Seas 1 to 2 feet, building to 1
to 3 feet. Wave Detail: East to southeast 2 feet at 3 seconds.
.TUESDAY...East to southeast winds near 10 knots, becoming
variable and decreasing to 5 to 10 knots. Seas 1 to 2 feet. Wave
Detail: East to southeast 1 foot at 4 seconds.
.TUESDAY NIGHT...Variable winds 5 to 10 knots, becoming northeast
to east. Seas 1 to 2 feet.
.WEDNESDAY...Northeast to east winds 5 to 10 knots. Seas 1 to 2
feet.
.WEDNESDAY NIGHT...Northeast to east winds 5 to 10 knots, becoming
east to southeast. Seas 1 to 2 feet. Isolated showers.
.THURSDAY...East to southeast winds 5 to 10 knots, becoming
northeast to east and increasing to near 10 knots. Seas 1 to 2
feet. Isolated showers.
.THURSDAY NIGHT...Northeast to east winds 10 to 15 knots, becoming
east. Seas around 2 feet. Isolated showers and thunderstorms.
.FRIDAY...East winds near 10 knots, becoming northeast to east.
Seas 1 to 2 feet. Isolated showers and thunderstorms.
.FRIDAY NIGHT...Northeast to east winds 10 to 15 knots. Seas 2 to
3 feet. Isolated showers and thunderstorms.

$$

GMZ033-034-272045-
Gulf waters from East Cape Sable to Chokoloskee 20 to 60 NM out
and beyond 5 fathoms-
Gulf of Mexico including Dry Tortugas and Rebecca Shoal Channel-
1034 AM EDT Mon May 27 2024

.THIS AFTERNOON...Southeast to south winds 5 to 10 knots. Seas 1
to 2 feet, subsiding to around 1 foot. Wave Detail: Southeast 1
foot at 3 seconds.
.TONIGHT...Variable winds 5 to 10 knots, becoming southeast and
increasing to near 10 knots. Seas around 1 foot. Wave Detail:
Northeast 1 foot at 2 seconds.
.TUESDAY...East to southeast winds 5 to 10 knots, becoming
variable and decreasing to near 5 knots in the afternoon. Seas
around 1 foot, subsiding to 1 foot or less. Wave Detail: East 1
foot at 3 seconds. Isolated showers.
.TUESDAY NIGHT...North to northeast winds 5 to 10 knots. Seas
around 1 foot. Isolated showers.
.WEDNESDAY...North winds near 5 knots. Seas 1 foot or less.
.WEDNESDAY NIGHT...Northwest to north winds near 5 knots,
becoming east to southeast after midnight. Seas 1 foot or less.
Isolated showers.
.THURSDAY...East to southeast winds near 5 knots. Seas 1 foot or
less.
.THURSDAY NIGHT...East winds 5 to 10 knots, becoming east to
southeast and increasing to near 10 knots. Seas 1 foot or less,
building to 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 5 to 10 knots, increasing
to 10 to 15 knots. Seas around 1 foot, building to 1 to 2 feet.
Isolated showers and thunderstorms.

$$

AP