693
FZUS52 KKEY 230221
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
1021 PM 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.

GMZ005-230900-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1021 PM EDT Sun Sep 22 2024

.SYNOPSIS...Light to gentle easterly flow across the Keys coastal
waters overnight will continue to 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.

$$

GMZ031-230900-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
1021 PM EDT Sun Sep 22 2024

.OVERNIGHT...East winds 5 to 10 knots. Bay waters smooth to a
light chop. Scattered showers and isolated thunderstorms.
.MONDAY...East winds 5 to 10 knots. Bay waters smooth to a light
chop. Isolated showers and thunderstorms.
.MONDAY NIGHT...East winds near 10 knots, increasing to 10 to 15
knots. Bay waters a light chop, becoming a light to moderate
chop. Scattered showers and isolated thunderstorms.
.TUESDAY...East winds 10 to 15 knots. Bay waters a light to
moderate chop. Scattered showers and thunderstorms.
.TUESDAY NIGHT...East to southeast winds near 15 knots, increasing
to 15 to 20 knots. Bay waters a moderate chop, becoming choppy.
Numerous showers and scattered thunderstorms.
.WEDNESDAY...Southeast winds 15 to 20 knots. Bay waters choppy.
Numerous showers and scattered thunderstorms.
.WEDNESDAY NIGHT AND THURSDAY...Southeast 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.
.FRIDAY...South to southwest winds near 15 knots. Bay waters a
moderate chop. Scattered showers and thunderstorms.
.FRIDAY NIGHT...South winds 10 to 15 knots. Bay waters a light to
moderate chop. Scattered showers and thunderstorms.

$$

GMZ032-035-230900-
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-
1021 PM EDT Sun Sep 22 2024

.OVERNIGHT...East winds 5 to 10 knots, increasing to near 10 knots.
Seas 1 foot or less. Nearshore waters smooth to a light chop,
becoming a light chop. Scattered showers and isolated
thunderstorms.
.MONDAY...East winds near 10 knots. Seas 1 foot or less.
Nearshore waters a light chop. Isolated showers and
thunderstorms.
.MONDAY NIGHT...East winds near 10 knots, increasing to 10 to 15
knots. Seas building to 1 to 2 feet. Nearshore waters a light
chop, becoming a light to moderate chop. Scattered showers and
isolated thunderstorms.
.TUESDAY...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. 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...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 to south winds 20 to 25 knots. Seas
2 to 3 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
3 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.
.FRIDAY...South to southwest winds 15 to 20 knots. Seas 2 to
3 feet, except 4 to 5 feet, occasionally to 6 feet west of the
Marquesas Keys. Nearshore waters choppy. Scattered showers and
thunderstorms.
.FRIDAY NIGHT...South winds near 15 knots. Seas 2 to 4 feet,
occasionally to 5 feet, except 5 to 6 feet, occasionally to 8 feet
west of the Marquesas Keys. Nearshore waters a moderate chop.
Scattered showers and thunderstorms.

$$

GMZ042>044-230900-
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-
1021 PM EDT Sun Sep 22 2024

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

$$

GMZ052>055-072>075-230900-
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-
1021 PM EDT Sun Sep 22 2024

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

$$

GMZ033-034-230900-
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-
1021 PM EDT Sun Sep 22 2024

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

$$