718
FZUS52 KKEY 220824
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
424 AM EDT Sun Sep 22 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.

GMZ005-221430-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
424 AM EDT Sun Sep 22 2024

.SYNOPSIS...Light easterly flow across the Keys coastal waters
today and tonight will gradually increase Monday through Tuesday,
as high pressure builds along the Eastern Seaboard, and a
tropical low slowly develops in the northwestern Caribbean Sea.
Heading through the middle and later part of the week, the
forecast will depend on the potential development and movement of
this low. At this time, we expect fresh to strong east to
southeast breezes to develop late Tuesday, becoming southerly late
in the week, with the strongest winds over western sections of
the Keys waters. Mariners should continue to closely monitor the
latest forecast updates during the next several days.

The Approximate Shoreward Edge of the Gulf Stream as of September
18...

63 NM South of Dry Tortugas Light...on Loggerhead Key.
23 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
 8 NM South of Sand Key Light...off Key West.
12 NM South of Looe Key...off Big Pine Key.
13 NM South of Sombrero Key Light...off Marathon.
 6 NM Southeast of Alligator Reef Light...off Islamorada.
 4 NM Southeast of Molasses Reef Light...off Key Largo.
 5 NM East of Carysfort Reef Light...off Ocean Reef.

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

$$

GMZ031-221430-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
424 AM EDT Sun Sep 22 2024

.TODAY...Northeast to east winds near 5 knots. Bay waters smooth.
Isolated showers and thunderstorms.
.TONIGHT...East winds near 5 knots, increasing to 5 to 10 knots.
Bay waters smooth, becoming smooth to a light chop. Scattered
showers and isolated thunderstorms.
.MONDAY...East winds 5 to 10 knots, increasing to near 10 knots.
Bay waters smooth to a light chop, becoming a light chop.
Isolated showers and thunderstorms.
.MONDAY NIGHT...East winds 10 to 15 knots. Bay waters a light to
moderate chop. Scattered showers and isolated thunderstorms.
.TUESDAY...East winds 10 to 15 knots, increasing to near 15 knots.
Bay waters a light to moderate chop, becoming a moderate chop.
Scattered showers and thunderstorms.
.TUESDAY NIGHT...East to southeast winds near 15 knots. Bay
waters a moderate chop. Numerous showers and scattered
thunderstorms.
.WEDNESDAY...East to southeast winds 15 to 20 knots. Bay waters
choppy. Numerous showers and scattered thunderstorms.
.WEDNESDAY NIGHT...Southeast winds near 20 knots. Bay waters
rough. Numerous showers and scattered thunderstorms.
.THURSDAY...Southeast to south winds near 20 knots. Bay waters
rough. Numerous showers and scattered thunderstorms.
.THURSDAY NIGHT...South winds 15 to 20 knots. Bay waters choppy.
Numerous showers and scattered thunderstorms.

$$

GMZ032-035-221430-
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-
424 AM EDT Sun Sep 22 2024

.TODAY...Northeast to east winds near 5 knots. Seas 1 foot or
less. Nearshore waters smooth. Isolated showers and
thunderstorms.
.TONIGHT...Northeast to east winds near 5 knots, becoming east 5
to 10 knots. Seas 1 foot or less. Nearshore waters smooth,
becoming smooth to a light chop. Scattered showers and isolated
thunderstorms.
.MONDAY...East winds 5 to 10 knots, increasing to near 10 knots.
Seas around 1 foot. Nearshore waters smooth to a light chop,
becoming a light chop. Isolated showers and thunderstorms.
.MONDAY NIGHT...East winds 10 to 15 knots. Seas 1 to 2 feet.
Nearshore waters a light to moderate chop. Scattered showers and
isolated thunderstorms.
.TUESDAY...East winds near 15 knots, increasing to 15 to 20
knots. Seas 1 to 2 feet, except building to 2 to 3 feet west of
the Marquesas Keys. Nearshore waters a moderate chop, becoming
choppy. Scattered showers and thunderstorms.
.TUESDAY NIGHT...East to southeast 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. Numerous showers and
scattered thunderstorms.
.WEDNESDAY...East to southeast winds near 20 knots. Seas 2 to
3 feet, except 4 to 5 feet, occasionally to 6 feet, west of the
Marquesas Keys. Nearshore waters rough. Numerous showers and
scattered thunderstorms.
.WEDNESDAY NIGHT...Southeast winds 20 to 25 knots. Seas 2 to
4 feet, except 4 to 6 feet, occasionally to 8 feet, west of the
Marquesas Keys. Nearshore waters very rough. Numerous showers and
scattered thunderstorms.
.THURSDAY...Southeast to south winds 20 to 25 knots. Seas 2 to
4 feet, except 5 to 7 feet, occasionally to 9 feet, west of the
Marquesas Keys. Nearshore waters very rough. Numerous showers and
scattered thunderstorms.
.THURSDAY NIGHT...South winds near 20 knots. Seas 2 to 3 feet,
except 5 to 6 feet, occasionally to 8 feet, west of the Marquesas
Keys. Nearshore waters rough. Numerous showers and scattered
thunderstorms.

$$

GMZ042>044-221430-
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-
424 AM EDT Sun Sep 22 2024

.TODAY...Northeast to east winds near 5 knots. Seas 1 foot or
less. Nearshore waters smooth. Isolated showers and
thunderstorms.
.TONIGHT...East winds 5 to 10 knots. Seas around 1 foot.
Nearshore waters smooth to a light chop. Scattered showers and
isolated thunderstorms.
.MONDAY...East winds 5 to 10 knots, increasing to near 10 knots.
Seas building to 1 to 2 feet. Nearshore waters smooth to a light
chop, becoming a light chop. Isolated showers and thunderstorms.
.MONDAY NIGHT...East winds 10 to 15 knots. Seas building to 2 to
3 feet. Nearshore waters a light to moderate chop. Scattered
showers and isolated thunderstorms.
.TUESDAY...East winds near 15 knots, increasing to 15 to 20
knots. Seas 2 to 3 feet, building to 2 to 4 feet. Nearshore
waters a moderate chop, becoming choppy. Scattered showers and
thunderstorms.
.TUESDAY NIGHT...East to southeast winds 15 to 20 knots. Seas
3 to 4 feet, occasionally to 5 feet. Nearshore waters choppy.
Numerous showers and scattered thunderstorms.
.WEDNESDAY...East to southeast winds near 20 knots. Seas 3 to 4
feet, occasionally to 5 feet, except 4 to 6 feet, occasionally to
8 feet, west of Cosgrove Shoal Light. Nearshore waters rough.
Numerous showers and scattered thunderstorms.
.WEDNESDAY NIGHT...Southeast winds 20 to 25 knots. Seas 4 to
6 feet, occasionally to 8 feet, except 5 to 6 feet, occasionally
to 8 feet, west of Cosgrove Shoal Light. Nearshore waters very
rough. Numerous showers and scattered thunderstorms.
.THURSDAY...Southeast to south winds 20 to 25 knots. Seas 4 to
6 feet, occasionally to 8 feet, except 6 to 7 feet, occasionally
to 9 feet, west of Cosgrove Shoal Light. Nearshore waters very
rough. Numerous showers and scattered thunderstorms.
.THURSDAY NIGHT...South winds near 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet, except 5 to 7 feet, occasionally to 9
feet,west of Cosgrove Shoal Light. Nearshore waters rough.
Numerous showers and scattered thunderstorms.

$$

GMZ052>055-072>075-221430-
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-
424 AM EDT Sun Sep 22 2024

.TODAY...Northeast to east winds 5 to 10 knots. Seas 1 to 2 feet.
Wave Detail: Northeast to east 1 foot at 3 seconds. Isolated
showers and thunderstorms.
.TONIGHT...East winds 5 to 10 knots. Seas 1 to 2 feet. Wave
Detail: Northeast to east 1 foot at 3 seconds. Scattered showers
and isolated thunderstorms.
.MONDAY...East winds near 10 knots, increasing to 10 to 15 knots.
Seas building to 2 to 3 feet. Wave Detail: East 2 feet at 4
seconds. Scattered showers and isolated thunderstorms.
.MONDAY NIGHT...East winds near 15 knots. Seas building to 3 to 4
feet. Scattered showers and isolated thunderstorms.
.TUESDAY...East winds near 15 knots, increasing to 15 to 20
knots. Seas 3 to 4 feet, occasionally to 5 feet, building to 4 to
5 feet, occasionally to 6 feet. Scattered showers and
thunderstorms.
.TUESDAY NIGHT...East to southeast winds 15 to 20 knots. Seas
4 to 5 feet, occasionally to 6 feet. Numerous showers and
scattered thunderstorms.
.WEDNESDAY...East to southeast winds near 20 knots. Seas 4 to 6
feet, occasionally to 8 feet. Numerous showers and scattered
thunderstorms.
.WEDNESDAY NIGHT...Southeast winds 20 to 25 knots. Seas 5 to
7 feet, occasionally to 9 feet. Numerous showers and scattered
thunderstorms.
.THURSDAY...Southeast to south winds 20 to 25 knots. Seas 5 to
7 feet, occasionally to 9 feet. Numerous showers and scattered
thunderstorms.
.THURSDAY NIGHT...South winds near 20 knots. Seas 5 to 7 feet,
occasionally to 9 feet. Numerous showers and scattered
thunderstorms.

$$

GMZ033-034-221430-
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-
424 AM EDT Sun Sep 22 2024

.TODAY...Northeast to east winds near 5 knots. Seas 1 foot or
less. Wave Detail: Northeast to east 1 foot at 3 seconds.
Isolated showers and thunderstorms.
.TONIGHT...Northeast to east winds 5 to 10 knots. Seas 1 foot or
less. Scattered showers and isolated thunderstorms.
.MONDAY...East winds 5 to 10 knots. Seas around 1 foot. Wave
Detail: East 1 foot at 2 seconds. Scattered showers and isolated
thunderstorms.
.MONDAY NIGHT...East winds near 10 knots early, increasing to 10
to 15 knots. Seas 1 to 2 feet, building to 2 to 3 feet. Scattered
showers and isolated thunderstorms.
.TUESDAY...East winds near 15 knots, increasing to 15 to 20
knots. Seas 2 to 3 feet, building to 3 to 4 feet, occasionally to
5 feet. Scattered showers and thunderstorms.
.TUESDAY NIGHT...East to southeast winds near 20 knots. Seas 3 to
5 feet, occasionally to 6 feet. Numerous showers and scattered
thunderstorms.
.WEDNESDAY...East to southeast winds 20 to 25 knots. Seas 4 to
6 feet, occasionally to 8 feet. Widespread showers and scattered
thunderstorms.
.WEDNESDAY NIGHT...Southeast winds near 25 knots. Seas 5 to 7
feet, occasionally to 9 feet. Widespread showers and scattered
thunderstorms.
.THURSDAY...Southeast to south winds near 25 knots. Seas 5 to 8
feet, occasionally to 10 feet. Widespread showers and scattered
thunderstorms.
.THURSDAY NIGHT...South winds near 20 knots. Seas 5 to 7 feet,
occasionally to 9 feet. Widespread showers and scattered
thunderstorms.

$$