Coastal Waters Forecast
Issued by NWS Key West, FL

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194
FZUS52 KKEY 180834
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
434 AM EDT Fri Oct 18 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.

GMZ005-181430-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
434 AM EDT Fri Oct 18 2024

.SYNOPSIS...A sprawling autumn high pressure system over the
eastern United States will maintain strong northeast to east
breezes, possibly near gale force tonight. Breezes will only
modestly slacken for early next week, when fresh to strong
northeasterly breezes are expected.

The Approximate Shoreward Edge of the Gulf Stream as of October
16...

18 NM South of Dry Tortugas Light...on Loggerhead Key.
11 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
11 NM South of Sand Key Light...off Key West.
28 NM South of Looe Key...off Big Pine Key.
38 NM South of Sombrero Key Light...off Marathon.
19 NM Southeast of Alligator Reef Light...off Islamorada.
11 NM Southeast of Molasses Reef Light...off Key Largo.
 9 NM East of Carysfort Reef Light...off Ocean Reef.

Gulf Stream Information Courtesy of the National Weather Service
in Key West based on products from the Real Time Ocean Forecast
System.

$$

GMZ031-181430-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
434 AM EDT Fri Oct 18 2024

...SMALL CRAFT ADVISORY IN EFFECT...
...GALE WATCH IN EFFECT...

.TODAY...Northeast winds 20 to 25 knots, increasing to near 25
knots. Bay waters very rough, becoming extremely rough. Areas of
rain, scattered showers, and isolated thunderstorms developing
later this morning.
.TONIGHT...Northeast to east winds 20 to 25 knots. Bay waters
very rough. Areas of rain, scattered showers, and isolated
thunderstorms.
.SATURDAY...Northeast to east winds 20 to 25 knots. Bay waters
very rough. Scattered showers.
.SATURDAY NIGHT...Northeast winds 20 to 25 knots, decreasing near
20 knots. Bay waters very rough, becoming rough. Isolated
showers.
.SUNDAY...Northeast to east winds 15 to 20 knots. Bay waters
choppy. Isolated showers.
.SUNDAY NIGHT...Northeast winds 15 to 20 knots. Bay waters
choppy. Isolated showers.
.MONDAY THROUGH TUESDAY NIGHT...Northeast to east winds 15 to 20
knots. Bay waters choppy. Isolated showers.

$$

GMZ032-035-181430-
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-
434 AM EDT Fri Oct 18 2024

...SMALL CRAFT ADVISORY IN EFFECT...
...GALE WATCH IN EFFECT...

.TODAY...Northeast winds 25 to 30 knots. Seas 3 to 5 feet,
occasionally to 6 feet, except 6 to 8 feet, occasionally to 10
feet west of the Marquesas Keys. Nearshore waters extremely rough.
Areas of rain, scattered showers, and isolated thunderstorms
developing later today.
.TONIGHT...Northeast to east winds 25 to 30 knots. Seas 3 to 5
feet, occasionally to 6 feet, except 7 to 9 feet, occasionally to
11 feet west of the Marquesas Keys. Nearshore waters extremely
rough. Areas of rain, scattered showers, and isolated
thunderstorms.
.SATURDAY...Northeast to east winds near 25 knots. Seas 3 to
5 feet, occasionally to 6 feet, except 6 to 7 feet, occasionally
to 9 feet west of the Marquesas Keys. Nearshore waters extremely
rough. Scattered showers.
.SATURDAY NIGHT...Northeast winds near 25 knots, decreasing to 20
to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet, except 5
to 7 feet, occasionally to 9 feet west of the Marquesas Keys.
Nearshore waters extremely rough, becoming very rough. Isolated
showers.
.SUNDAY...Northeast to east winds near 20 knots, decreasing to 15
to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. West of
the Marquesas Keys, seas 5 to 6 feet, occasionally to 8 feet,
subsiding to around 4 feet, occasionally to 5 feet. Nearshore
waters rough, becoming choppy. Isolated showers.
.SUNDAY NIGHT THROUGH TUESDAY...Northeast winds near 20 knots.
Seas 2 to 4 feet, occasionally to 5 feet, except 3 to 5 feet,
occasionally to 6 feet west of the Marquesas Keys. Nearshore
waters rough. Isolated showers.
.TUESDAY NIGHT...Northeast winds 15 to 20 knots. Seas 2 to
3 feet. West of the Marquesas Keys, seas 2 to 4 feet,
occasionally to 5 feet. Nearshore waters choppy. Isolated showers.

$$

GMZ042>044-181430-
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-
434 AM EDT Fri Oct 18 2024

...SMALL CRAFT ADVISORY IN EFFECT...
...GALE WATCH IN EFFECT...

.TODAY...Northeast to east winds 25 to 30 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 extremely
rough. Areas of rain, numerous showers, and isolated
thunderstorms developing later this morning.
.TONIGHT...Northeast to east winds 25 to 30 knots. Seas 4 to 6
feet, occasionally to 8 feet, except 6 to 8 feet, occasionally to
10 feet west of Cosgrove Shoal Light. Nearshore waters extremely
rough. Areas of rain, numerous showers, and isolated
thunderstorms.
.SATURDAY...Northeast to east winds near 25 knots. Seas 4 to
6 feet, occasionally to 8 feet, except 5 to 7 feet, occasionally
to 9 feet west of Cosgrove Shoal Light. Nearshore waters
extremely rough. Scattered showers.
.SATURDAY NIGHT...Northeast winds near 25 knots, decreasing to 20
to 25 knots. Seas 4 to 6 feet, occasionally to 8 feet, except 5
to 7 feet, occasionally to 9 feet west of Cosgrove Shoal Light.
Nearshore waters extremely rough, becoming very rough. Isolated
showers.
.SUNDAY...Northeast to east 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.
Isolated showers.
.SUNDAY NIGHT THROUGH TUESDAY NIGHT...Northeast winds near 20
knots. Seas 2 to 4 feet, occasionally to 5 feet, except 3 to 5
feet, occasionally to 6 feet west of Cosgrove Shoal Light.
Nearshore waters rough. Isolated showers.

$$

GMZ052>055-072>075-181430-
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-
434 AM EDT Fri Oct 18 2024

...SMALL CRAFT ADVISORY IN EFFECT...
...GALE WATCH IN EFFECT...

.TODAY...Northeast to east winds 25 to 30 knots. Seas 8 to 11
feet, occasionally to 14 feet. Wave Detail: Northeast to east 11
feet at 8 seconds. Widespread rain, numerous showers, and isolated
thunderstorms developing.
.TONIGHT...Northeast to east winds 25 to 30 knots. Seas 8 to 11
feet, occasionally to 14 feet. Wave Detail: Northeast to east 10
feet at 8 seconds. Areas of rain, numerous showers, and isolated
thunderstorms.
.SATURDAY...Northeast to east winds 25 to 30 knots. Seas 9 to
11 feet, occasionally to 14 feet. Wave Detail: Northeast to east
10 feet at 8 seconds. Numerous showers and isolated
thunderstorms.
.SATURDAY NIGHT...Northeast to east winds 25 to 30 knots,
decreasing to 20 to 25 knots. Seas 8 to 11 feet, occasionally to
14 feet. Isolated showers and thunderstorms.
.SUNDAY...Northeast to east winds 20 to 25 knots. Seas 6 to
9 feet, occasionally to 11 feet, subsiding to 5 to 7 feet,
occasionally to 9 feet. Isolated showers.
.SUNDAY NIGHT AND MONDAY...Northeast to east winds near 20 knots.
Seas 5 to 7 feet, occasionally to 9 feet. Isolated showers.
.MONDAY NIGHT...Northeast to east winds near 20 knots. Seas 5 to
7 feet, occasionally to 9 feet. Scattered showers.
.TUESDAY...Northeast to east winds near 20 knots. Seas 6 to
7 feet, occasionally to 9 feet. Isolated showers.
.TUESDAY NIGHT...Northeast winds near 20 knots. Seas 5 to 7 feet,
occasionally to 9 feet. Scattered showers.

$$

GMZ033-034-181430-
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-
434 AM EDT Fri Oct 18 2024

...SMALL CRAFT ADVISORY IN EFFECT...
...GALE WATCH IN EFFECT...

.TODAY...Northeast to east winds 25 to 30 knots. Seas 6 to 9
feet, occasionally to 11 feet. Wave Detail: Northeast 7 feet at 6
seconds. Areas of rain, scattered showers, and isolated
thunderstorms developing later today.
.TONIGHT...Northeast to east winds 25 to 30 knots. Seas 6 to 9
feet, occasionally to 11 feet. Wave Detail: Northeast 8 feet at 6
seconds. Areas of rain, scattered showers, and isolated
thunderstorms.
.SATURDAY...Northeast to east winds near 25 knots. Seas 5 to
8 feet, occasionally to 10 feet. Wave Detail: Northeast 8 feet at
6 seconds. Scattered showers.
.SATURDAY NIGHT...Northeast to east winds near 25 knots,
decreasing to 20 to 25 knots. Seas 5 to 8 feet, occasionally to
10 feet. Isolated showers.
.SUNDAY...Northeast winds 20 to 25 knots, decreasing to 15 to 20
knots. Seas 4 to 7 feet, occasionally to 9 feet. Isolated
showers.
.SUNDAY NIGHT THROUGH TUESDAY NIGHT...Northeast to east winds
near 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. Isolated
showers.

$$

Kasper