Coastal Waters Forecast
Issued by NWS

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FZUS52 KKEY 212131
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
431 PM EST Tue Nov 21 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.

GMZ005-220330-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
431 PM EST Tue Nov 21 2017

.SYNOPSIS...Gentle breezes will continue across the coastal
waters of the Florida Keys today through Thursday. A broad area of
low pressure likely will develop over the Gulf of Mexico
Wednesday and Wednesday night, then slowly move northeast across
the Florida Peninsula Thursday through Friday. The exact track of
this non-tropical low remains uncertain. High pressure will build
into the Mississippi River Valley Saturday and Saturday night,
turning breezes to the northwest to north across the coastal
waters of the Florida Keys.

The approximate shoreward edge of the Gulf Stream current, as of
November 21th, 2017,

82 NM South of Dry Tortugas Light...on Loggerhead Key.
 7 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
 1 NM South of Sand Key Light...off Key West.
 2 NM South of Looe Key...off Big Pine Key.
 3 NM South of Sombrero Key Light...off Marathon.
 2 NM Southeast of Alligator Reef Light...off Islamorada.
 Less than 1 NM Southeast of Molasses Reef Light...off Key Largo.
 3 NM East of Carysfort Reef Light...off Ocean Reef.

Gulf Stream Information Courtesy of the Naval Oceanographic Office.

$$

GMZ031-220330-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
431 PM EST Tue Nov 21 2017

.TONIGHT...East winds 5 to 10 knots becoming north to northeast
late. Bay waters smooth to a light chop. Isolated showers.
.WEDNESDAY...Northeast to east winds 5 to 10 knots. Bay waters
smooth to a light chop. Isolated showers.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Bay waters smooth to
a light chop. Isolated showers.
.THURSDAY...South winds 5 to 10 knots. Bay waters smooth to a
light chop. Scattered showers and isolated thunderstorms.
.THURSDAY NIGHT...South to southwest winds 5 to 10 knots. Bay
waters smooth to a light chop. Scattered showers and isolated
thunderstorms.
.FRIDAY...South to southwest winds near 10 knots. Bay waters a
light chop. Scattered showers and isolated thunderstorms.
.FRIDAY NIGHT...Southwest winds near 10 knots becoming west to
northwest late. Bay waters a light chop. Isolated showers.
.SATURDAY...Northwest winds near 10 knots. Bay waters a light
chop. Isolated showers.
.SATURDAY NIGHT...Northwest to north winds near 10 knots. Bay
waters a light chop. Isolated showers.
.SUNDAY...Northwest to north winds near 10 knots. Bay waters a
light chop. Isolated showers.
.SUNDAY NIGHT...North winds 10 to 15 knots. Bay waters a light to
moderate chop. Isolated showers.

$$

GMZ032-035-220330-
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-
431 PM EST Tue Nov 21 2017

.TONIGHT...Northeast to east winds 5 to 10 knots. Seas 1 foot or
less. Nearshore waters smooth to a light chop. Isolated showers.
.WEDNESDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less.
Nearshore waters smooth to a light chop. Isolated showers.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less.
Nearshore waters smooth to a light chop. Isolated showers.
.THURSDAY...Southeast to south winds near 10 knots. Seas around 1
foot. Nearshore waters a light chop. Scattered showers and
isolated thunderstorms.
.THURSDAY NIGHT...South to southwest winds 5 to 10 knots. Seas
1 foot or less. Nearshore waters smooth to a light chop.
Scattered showers and isolated thunderstorms.
.FRIDAY...South to southwest winds near 10 knots. Seas around 1
foot. Nearshore waters a light chop. Scattered showers and
isolated thunderstorms.
.FRIDAY NIGHT...Southwest to west winds near 10 knots becoming
west to northwest late. Seas around 1 foot. Nearshore waters a
light chop. Isolated showers.
.SATURDAY...Northwest to north winds near 10 knots. Seas around 1
foot. Nearshore waters a light chop. Isolated showers.
.SATURDAY NIGHT...Northwest to north winds near 10 knots. Seas
around 1 foot. Nearshore waters a light chop. Isolated showers.
.SUNDAY...Northwest to north winds 10 to 15 knots. Seas 1 to 2
feet. Nearshore waters a light to moderate chop. Isolated
showers.
.SUNDAY NIGHT...North winds near 15 knots. Seas 1 to 3 feet.
Nearshore waters a moderate chop. Isolated showers.

$$

GMZ042>044-220330-
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-
431 PM EST Tue Nov 21 2017

.TONIGHT...East winds 5 to 10 knots. Seas around 1 foot.
Nearshore waters smooth to a light chop. Isolated showers.
.WEDNESDAY...Northeast to east winds 5 to 10 knots. Seas 1 foot
or less. Nearshore waters smooth to a light chop. Isolated
showers.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas around 1 foot.
Nearshore waters smooth to a light chop. Isolated showers.
.THURSDAY...Southeast to south winds near 10 knots. Seas 1 to 2
feet. Nearshore waters a light chop. Scattered showers and
isolated thunderstorms.
.THURSDAY NIGHT...South to southwest winds near 10 knots. Seas 1
to 2 feet. Nearshore waters a light chop. Scattered showers and
isolated thunderstorms.
.FRIDAY...South to southwest winds near 10 knots. Seas 1 to
2 feet. Nearshore waters a light chop. Scattered showers and
isolated thunderstorms.
.FRIDAY NIGHT...Southwest to west winds near 10 knots becoming
west to northwest late. Seas 1 to 2 feet. Nearshore waters a
light chop. Isolated showers.
.SATURDAY AND SATURDAY NIGHT...Northwest to north winds near 10
knots. Seas 1 to 2 feet. Nearshore waters a light chop. Isolated
showers.
.SUNDAY...Northwest to north winds 10 to 15 knots. Seas 1 to
3 feet. Nearshore waters a light to moderate chop. Isolated
showers.
.SUNDAY NIGHT...North winds 15 to 20 knots. Seas 2 to 3 feet.
Nearshore waters choppy. Isolated showers.

$$

GMZ052>055-072>075-220330-
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-
431 PM EST Tue Nov 21 2017

.TONIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Isolated
showers.
.WEDNESDAY...Northeast to east winds 5 to 10 knots. Seas 1 to
2 feet. Isolated showers.
.WEDNESDAY NIGHT...East winds near 10 knots. Seas 1 to 2 feet.
Isolated showers.
.THURSDAY AND THURSDAY NIGHT...South to southwest winds near 10
knots. Seas 2 to 3 feet. Scattered showers and isolated
thunderstorms.
.FRIDAY...South to southwest winds near 10 knots. Seas 2 to 3
feet. Scattered showers and isolated thunderstorms.
.FRIDAY NIGHT...West winds near 10 knots. Seas 2 to 3 feet.
Isolated showers.
.SATURDAY...Northwest to north winds near 10 knots. Seas 2 to 3
feet. Isolated showers.
.SATURDAY NIGHT...Northwest to north winds 10 to 15 knots. Seas
2 to 4 feet. Isolated showers.
.SUNDAY...Northwest to north winds 10 to 15 knots. Seas 2 to 4
feet. Isolated showers.
.SUNDAY NIGHT...North winds 15 to 20 knots. Seas 3 to 6 feet.
Isolated showers.

$$

GMZ033-034-220330-
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-
431 PM EST Tue Nov 21 2017

.TONIGHT...East winds 5 to 10 knots. Seas around 1 foot. Isolated
showers.
.WEDNESDAY...Northeast to east winds 5 to 10 knots. Seas around 1
foot. Isolated showers.
.WEDNESDAY NIGHT...East to southeast winds 5 to 10 knots. Seas
around 1 foot. Isolated showers.
.THURSDAY...South to southwest winds near 10 knots. Seas 1 to
2 feet. Scattered showers and isolated thunderstorms.
.THURSDAY NIGHT...South to southwest winds near 10 knots. Seas 1
to 3 feet. Scattered showers and isolated thunderstorms.
.FRIDAY...Southwest winds near 10 knots. Seas 2 to 3 feet.
Scattered showers and isolated thunderstorms.
.FRIDAY NIGHT...West winds near 10 knots becoming northwest late.
Seas 2 to 3 feet. Isolated showers.
.SATURDAY...Northwest to north winds near 10 knots. Seas 2 to 3
feet. Isolated showers.
.SATURDAY NIGHT...Northwest to north winds near 10 knots. Seas
1 to 2 feet. Isolated showers.
.SUNDAY...Northwest to north winds 10 to 15 knots. Seas 1 to
3 feet. Isolated showers.
.SUNDAY NIGHT...North to northeast winds 15 to 20 knots. Seas
3 to 4 feet. Isolated showers.

$$

MCLOVIN



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