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National Weather Service Marine Forecast FZUS52 KKEY

FZUS52 KKEY 230220
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
1020 PM EDT Mon Apr 22 2019

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.

GMZ005-230830-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1020 PM EDT Mon Apr 22 2019

SYNOPSIS
A surface ridge axis from the Florida Panhandle to
the Georgia coast will gradually settle south toward Central
Florida through Wednesday, then weaken as it reaches South
Florida on Thursday. A low pressure trough will enter the western
Gulf on Thursday and reach the central Gulf on Friday. The trough
will gradually weaken over the eastern Gulf on Saturday and
Sunday, with light to gentle breezes over the waters this
weekend.

The Approximate Shoreward Edge of the Gulf Stream as of
April 22...

40 NM South of Dry Tortugas Light...on Loggerhead Key.
29 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
25 NM South of Sand Key Light...off Key West.
22 NM South of Looe Key...off Big Pine Key.
19 NM South of Sombrero Key Light...off Marathon.
14 NM Southeast of Alligator Reef Light...off Islamorada.
10 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.



GMZ031-230830-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
1020 PM EDT Mon Apr 22 2019

OVERNIGHT
East to northeast winds near 15 knots, decreasing to
10 to 15 knots late. Bay waters a moderate chop, becoming a light
to moderate chop.

TUESDAY
Northeast to east winds 10 to 15 knots in the morning,
increasing to near 15 knots in the afternoon. Bay waters a light
to moderate chop, becoming a moderate chop.

TUESDAY NIGHT
Northeast winds near 15 knots, decreasing to
near 10 knots late. Bay waters a light to moderate chop, becoming
a light chop.

WEDNESDAY
East winds 5 to 10 knots. Bay waters smooth to a
light chop.

WEDNESDAY NIGHT
East winds near 10 knots. Bay waters a light
chop.

THURSDAY
East to southeast winds 5 to 10 knots. Bay waters
smooth to a light chop.

THURSDAY NIGHT
Southeast winds near 10 knots. Bay waters a
light chop. Isolated showers after midnight.

FRIDAY
Southeast to south winds 10 to 15 knots. Bay waters a
light to moderate chop. Scattered showers and isolated
thunderstorms.

FRIDAY NIGHT
South winds 5 to 10 knots. Bay waters smooth to a
light chop. Scattered showers and thunderstorms.

SATURDAY AND SATURDAY NIGHT
South to southwest winds near 10
knots. Bay waters a light chop. Scattered showers and
thunderstorms.



GMZ032-035-230830-
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-
1020 PM EDT Mon Apr 22 2019

OVERNIGHT
Northeast to east winds 10 to 15 knots, increasing to
near 15 knots. Seas 1 to 2 feet. Nearshore waters a light to
moderate chop, becoming a moderate chop.

TUESDAY
Northeast to east winds 10 to 15 knots. Seas 1 to 2
feet. Nearshore waters a light to moderate chop.

TUESDAY NIGHT
Northeast to east winds near 15 knots, decreasing
to 10 to 15 knots after midnight. Seas 1 to 2 feet. Nearshore
waters a moderate chop, becoming a light to moderate chop.

WEDNESDAY
East winds near 10 knots, decreasing to 5 to 10
knots. Seas 1 foot or less. Nearshore waters a light chop,
becoming smooth to a light chop.

WEDNESDAY NIGHT
East winds near 10 knots. Seas 1 foot or less.
Nearshore waters a light chop.

THURSDAY
East to southeast winds 5 to 10 knots. Seas 1 foot or
less. Nearshore waters smooth to a light chop.

THURSDAY NIGHT
Southeast winds 10 to 15 knots. Seas 1 to 2
feet. Nearshore waters a light to moderate chop. Isolated showers
after midnight.

FRIDAY
Southeast to south winds 10 to 15 knots. Seas 1 to 2
feet. Nearshore waters a light to moderate chop. Scattered showers
and isolated thunderstorms.

FRIDAY NIGHT
South winds 5 to 10 knots. Seas 1 foot or less.
Nearshore waters smooth to a light chop. Scattered showers and
thunderstorms.

SATURDAY AND SATURDAY NIGHT
South to southwest winds near 10
knots. Seas 1 to 2 feet. Nearshore waters a light chop. Scattered
showers and thunderstorms.



GMZ042>044-230830-
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-
1020 PM EDT Mon Apr 22 2019

SMALL CRAFT SHOULD EXERCISE CAUTION


OVERNIGHT
Northeast to east winds 15 to 20 knots, decreasing to
near 15 knots late. Seas 2 to 3 feet. Nearshore waters choppy,
becoming a moderate chop.

TUESDAY
Northeast to east winds near 15 knots. Seas 1 to 3
feet. Nearshore waters a moderate chop.

TUESDAY NIGHT
Northeast to east winds near 15 knots, decreasing
to 10 to 15 knots after midnight. Seas 1 to 2 feet. Nearshore
waters a moderate chop, becoming a light to moderate chop.

WEDNESDAY
East winds near 10 knots. Seas 1 to 2 feet.
Nearshore waters a light chop.

WEDNESDAY NIGHT
East winds 10 to 15 knots. Seas 1 to 2 feet.
Nearshore waters a light to moderate chop.

THURSDAY
East to southeast winds 5 to 10 knots. Seas 1 to
2 feet. Nearshore waters smooth to a light chop.

THURSDAY NIGHT
Southeast winds 10 to 15 knots. Seas 1 to
2 feet. Nearshore waters a light to moderate chop. Isolated
showers after midnight.

FRIDAY
Southeast to south winds 10 to 15 knots. Seas 1 to 2
feet. Nearshore waters a light to moderate chop. Isolated showers
and thunderstorms.

FRIDAY NIGHT
South winds 5 to 10 knots. Seas 1 to 2 feet.
Nearshore waters smooth to a light chop. Scattered showers and
thunderstorms.

SATURDAY AND SATURDAY NIGHT
South to southwest winds near 10
knots. Seas 1 to 2 feet. Nearshore waters a light chop. Scattered
showers and thunderstorms.



GMZ052>055-072>075-230830-
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-
1020 PM EDT Mon Apr 22 2019

SMALL CRAFT SHOULD EXERCISE CAUTION


OVERNIGHT
Northeast to east winds 15 to 20 knots. Seas 3 to
5 feet.

TUESDAY
Northeast to east winds near 15 knots. Seas 3 to 5
feet.

TUESDAY NIGHT
Northeast to east winds 15 to 20 knots,
decreasing to near 15 knots after midnight. Seas 3 to 5 feet.

WEDNESDAY
East winds 10 to 15 knots. Seas 2 to 4 feet.

WEDNESDAY NIGHT AND THURSDAY
East winds 10 to 15 knots. Seas 2
to 3 feet.

THURSDAY NIGHT
Southeast winds 10 to 15 knots. Seas 1 to
3 feet. Isolated showers after midnight.

FRIDAY
Southeast to south winds 10 to 15 knots. Seas 1 to 3
feet. Isolated showers and thunderstorms.

FRIDAY NIGHT
South to southwest winds near 10 knots. Seas 1 to
2 feet. Scattered showers and thunderstorms.

SATURDAY AND SATURDAY NIGHT
South to southwest winds near 10
knots. Seas 1 to 2 feet. Scattered showers and thunderstorms. 



GMZ033-034-230830-
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-
1020 PM EDT Mon Apr 22 2019

OVERNIGHT
East winds 5 to 10 knots, increasing to near 15 knots
after midnight. Seas 1 to 2 feet, building to 2 to 3 feet.

TUESDAY
East winds near 15 knots in the morning, decreasing to
5 to 10 knots in the afternoon. Seas 2 to 3 feet, subsiding to 1
to 2 feet.

TUESDAY NIGHT
East winds 5 to 10 knots, increasing to 10 to 15
knots. Seas 1 to 2 feet.

WEDNESDAY
East winds near 10 knots, decreasing to 5 to 10
knots. Seas 1 to 2 feet.

WEDNESDAY NIGHT
East winds 10 to 15 knots. Seas 1 to 2 feet.

THURSDAY
East to southeast winds 10 to 15 knots, decreasing to
near 5 knots during the afternoon. Seas 1 to 2 feet.

THURSDAY NIGHT
East to southeast winds 5 to 10 knots, becoming
southeast and increasing to near 15 knots after midnight. Seas 1
to 2 feet, building to 2 to 3 feet. Isolated showers after
midnight.

FRIDAY
South winds near 15 knots. Seas 2 to 3 feet. Scattered
showers and isolated thunderstorms.

FRIDAY NIGHT
South to southwest winds 5 to 10 knots. Seas 1 to
2 feet. Scattered showers and thunderstorms.

SATURDAY
South to southwest winds 10 to 15 knots. Seas around
2 feet. Scattered showers and thunderstorms.

SATURDAY NIGHT
South to southwest winds near 10 knots. Seas 1
to 2 feet. Scattered showers and isolated thunderstorms.