Coastal Waters Forecast
Issued by NWS

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FZUS52 KKEY 181530
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
1030 AM EST Mon Dec 18 2017

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.

GMZ005-182130-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1030 AM EST Mon Dec 18 2017

.SYNOPSIS...A high pressure cell will persist from the subtropical
North Atlantic to the eastern Gulf of Mexico, from this afternoon
through Friday.

The Approximate Shoreward Edge of the Gulf Stream as of
December 16, 2017,

30 NM South of Dry Tortugas Light, on Loggerhead Key.
17 NM South of Cosgrove Shoal Light, off the Marquesas Keys.
26 NM South of Sand Key Light, off Key West.
32 NM South of Looe Key, off Big Pine Key.
29 NM South of Sombrero Key Light, off Marathon.
14 NM Southeast of Alligator Reef Light, off Islamorada.
 9 NM Southeast of Molasses Reef Light, off Key Largo.
 6 NM East of Carysfort Reef Light, off Ocean Reef.

Gulf Stream Information Courtesy of the Naval Oceanographic Office.

$$

GMZ031-182130-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
1030 AM EST Mon Dec 18 2017

.THIS AFTERNOON...East to southeast winds near 10 knots. Bay
waters a light chop.
.TONIGHT...East winds 5 to 10 knots. Bay waters smooth to a light
chop.
.TUESDAY...East winds near 10 knots. Bay waters a light chop.
.TUESDAY NIGHT...East winds near 10 knots. Bay waters a light
chop.
.WEDNESDAY...Southeast to south winds near 10 knots. Bay waters
a light chop.
.WEDNESDAY NIGHT...South winds 5 to 10 knots. Bay waters smooth.
.THURSDAY...East to southeast winds 5 to 10 knots. Bay waters
smooth to a light chop.
.THURSDAY NIGHT AND FRIDAY NIGHT...East winds near 10 knots. Bay
waters a light chop.

$$

GMZ032-035-182130-
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-
1030 AM EST Mon Dec 18 2017

.THIS AFTERNOON...East to southeast winds near 10 knots. Seas 1
foot or less. Nearshore waters smooth to a light chop.
.TONIGHT...East winds near 10 knots. Seas 1 foot or less.
Nearshore waters smooth to a light chop.
.TUESDAY...East winds near 10 knots. Seas 1 foot or less.
Nearshore waters smooth to a light chop.
.TUESDAY NIGHT...East winds 10 to 15 knots. Seas around 1 foot.
Nearshore waters a light to moderate chop.
.WEDNESDAY...East to southeast winds near 10 knots. Seas 1 foot
or less. Nearshore waters smooth to a light chop.
.WEDNESDAY NIGHT...East to southeast winds 5 to 10 knots. Seas 1
foot or less. Nearshore waters smooth.
.THURSDAY...East to southeast winds 5 to 10 knots. Seas 1 foot or
less. Nearshore waters smooth to a light chop.
.THURSDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less.
Nearshore waters smooth to a light chop.
.FRIDAY...East winds 10 to 15 knots. Seas around 1 foot.
Nearshore waters a light to moderate chop.
.FRIDAY NIGHT...East winds 10 to 15 knots. Seas around 1 foot.
Nearshore waters a light to moderate chop.

$$

GMZ042>044-182130-
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-
1030 AM EST Mon Dec 18 2017

.THIS AFTERNOON...East winds near 15 knots. Seas 2 to 3 feet.
Nearshore waters a moderate chop.
.TONIGHT...East winds near 15 knots. Seas 2 to 3 feet. Nearshore
waters a moderate chop.
.TUESDAY...East winds near 15 knots. Seas 2 to 3 feet. Nearshore
waters a moderate chop.
.TUESDAY NIGHT...East to southeast winds near 15 knots. Seas 2 to
3 feet. Nearshore waters a moderate chop.
.WEDNESDAY...Southeast winds near 10 knots. Seas 1 to 3 feet.
Nearshore waters smooth to a light chop.
.WEDNESDAY NIGHT...East to southeast winds 5 to 10 knots. Seas
1 to 2 feet. Nearshore waters smooth to a light chop.
.THURSDAY...East to southeast winds near 10 knots. Seas 1 to 2
feet. Nearshore waters a light chop.
.THURSDAY NIGHT...East to southeast winds near 10 knots. Seas 1
to 2 feet. Nearshore waters a light chop.
.FRIDAY...East winds 10 to 15 knots. Seas 1 to 3 feet. Nearshore
waters a light to moderate chop.
.FRIDAY NIGHT...East to southeast winds 10 to 15 knots. Seas 2 to
3 feet. Nearshore waters a light to moderate chop.

$$

GMZ052>055-072>075-182130-
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-
1030 AM EST Mon Dec 18 2017

...SMALL CRAFT SHOULD EXERCISE CAUTION...

.THIS AFTERNOON...East winds 15 to 20 knots. Seas 4 to 6 feet.
.TONIGHT...East winds 15 to 20 knots. Seas 4 to 6 feet.
.TUESDAY...East winds 15 to 20 knots. Seas 3 to 5 feet.
.TUESDAY NIGHT...East winds near 15 knots. Seas 3 to 5 feet.
.WEDNESDAY...East to southeast winds 10 to 15 knots. Seas 2 to
4 feet.
.WEDNESDAY NIGHT...East to southeast winds 10 to 15 knots. Seas
1 to 3 feet.
.THURSDAY...East to southeast winds 10 to 15 knots. Seas 1 to
3 feet.
.THURSDAY NIGHT...East to southeast winds 10 to 15 knots. Seas
2 to 4 feet.
.FRIDAY...East winds 15 to 20 knots. Seas 3 to 5 feet.
.FRIDAY NIGHT...East to southeast winds 15 to 20 knots. Seas 3 to
5 feet.

$$

GMZ033-034-182130-
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-
1030 AM EST Mon Dec 18 2017

.THIS AFTERNOON...East to southeast winds 10 to 15 knots. Seas 1
to 3 feet.
.TONIGHT...East winds 10 to 15 knots. Seas 1 to 3 feet.
.TUESDAY...East to southeast winds 10 to 15 knots. Seas 1 to
3 feet.
.TUESDAY NIGHT...East to southeast winds 10 to 15 knots. Seas
1 to 3 feet.
.WEDNESDAY...East to southeast winds near 10 knots. Seas 1 to 3
feet.
.WEDNESDAY NIGHT...Southeast winds near 5 knots. Seas 1 foot or
less.
.THURSDAY...Southeast winds 5 to 10 knots. Seas around 1 foot.
.THURSDAY NIGHT...East to southeast winds 5 to 10 knots. Seas
1 to 3 feet.
.FRIDAY...East to southeast winds 10 to 15 knots. Seas 2 to
4 feet.
.FRIDAY NIGHT...East to southeast winds near 15 knots. Seas 3 to
5 feet.

$$

Kasper



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