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National Weather Service Marine Forecast FZUS52 KKEY

FZUS52 KKEY 190846
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
446 AM EDT Mon Aug 19 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.

GMZ005-191500-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
446 AM EDT Mon Aug 19 2019

SYNOPSIS
A weak trough in the easterlies located over the
Bahamas will press west today, then pass through the Florida Keys
tonight and Tuesday. Enhanced breezes are expected as this trough
passes through the Keys. High pressure will stretch west across
the Florida Peninsula Tuesday night through Friday night.

The Approximate Shoreward Edge of the Gulf Stream as of
August 17...

44 NM South of Dry Tortugas Light...on Loggerhead Key.
47 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
49 NM South of Sand Key Light...off Key West.
53 NM South of Looe Key...off Big Pine Key.
48 NM South of Sombrero Key Light...off Marathon.
18 NM Southeast of Alligator Reef Light...off Islamorada.
12 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.



GMZ031-191500-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
446 AM EDT Mon Aug 19 2019

TODAY
Northeast to east winds 10 to 15 knots, increasing to
near 15 knots. Bay waters a light to moderate chop, becoming a
moderate chop. Isolated showers and thunderstorms in the morning,
then scattered showers and isolated thunderstorms developing.

TONIGHT
East to southeast winds 10 to 15 knots. Bay waters a
light to moderate chop. Scattered showers and thunderstorms.

TUESDAY
East to southeast winds 10 to 15 knots. Bay waters a
light to moderate chop. Numerous showers and scattered
thunderstorms.

TUESDAY NIGHT AND WEDNESDAY
East to southeast winds near 10
knots. Bay waters a light chop. Scattered showers and
thunderstorms.

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

THURSDAY
East winds near 10 knots. Bay waters a light chop.
Scattered showers and thunderstorms.

THURSDAY NIGHT
Northeast to east winds near 10 knots. Bay
waters a light chop. Scattered showers and thunderstorms.

FRIDAY AND FRIDAY NIGHT
East to southeast winds near 10 knots.
Bay waters a light chop. Scattered showers and thunderstorms.



GMZ032-035-191500-
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-
446 AM EDT Mon Aug 19 2019

TODAY
Northeast to east winds 10 to 15 knots, increasing to near
15 knots. Seas 2 to 3 feet. Nearshore waters a light to moderate
chop, becoming a moderate chop. Isolated showers and thunderstorms
in the morning, then scattered showers and isolated thunderstorms
developing.

TONIGHT
East to southeast winds near 15 knots, decreasing to 10
to 15 knots late. Seas 1 to 3 feet. Nearshore waters a moderate
chop, becoming a light to moderate chop. Scattered showers and
thunderstorms.

TUESDAY AND TUESDAY NIGHT
East to southeast winds 10 to 15
knots. Seas 1 to 2 feet. Nearshore waters a light to moderate
chop. Scattered showers and thunderstorms.

WEDNESDAY
East to southeast winds near 10 knots. Seas 1 foot
or less. Nearshore waters a light chop. Scattered showers and
thunderstorms.

WEDNESDAY NIGHT AND THURSDAY
East winds near 10 knots. Seas 1
foot or less. Nearshore waters a light chop. Scattered showers and
thunderstorms.

THURSDAY NIGHT
Northeast to east winds 10 to 15 knots. Seas
1 to 2 feet. Nearshore waters a light to moderate chop. Scattered
showers and thunderstorms.

FRIDAY AND FRIDAY NIGHT
East winds near 10 knots. Seas around
1 foot. Nearshore waters a light chop. Scattered showers and
thunderstorms.



GMZ042>044-191500-
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-
446 AM EDT Mon Aug 19 2019

SMALL CRAFT SHOULD EXERCISE CAUTION FOR INCREASING WINDS


TODAY
Northeast to east winds near 15 knots, increasing to 15
to 20 knots. Seas 2 to 4 feet. Nearshore waters a moderate chop,
becoming choppy. Isolated showers and thunderstorms in the morning,
then scattered showers and isolated thunderstorms developing.

TONIGHT
East to southeast winds near 15 knots. Seas 2 to 3
feet. Nearshore waters a moderate chop. Scattered showers and
thunderstorms.

TUESDAY AND TUESDAY NIGHT
East to southeast winds 10 to 15
knots. Seas 2 to 3 feet. Nearshore waters a light to moderate
chop. Scattered showers and thunderstorms.

WEDNESDAY
East to southeast winds near 10 knots. Seas 1 to
2 feet. Nearshore waters a light chop. Scattered showers and
thunderstorms.

WEDNESDAY NIGHT
East winds near 10 knots. Seas 1 to 2 feet.
Nearshore waters a light chop. Scattered showers and
thunderstorms.

THURSDAY
East winds 10 to 15 knots. Seas 1 to 2 feet.
Nearshore waters a light to moderate chop. Scattered showers and
thunderstorms.

THURSDAY NIGHT
Northeast to east winds 10 to 15 knots. Seas
1 to 2 feet. Nearshore waters a light to moderate chop. Scattered
showers and thunderstorms.

FRIDAY AND FRIDAY NIGHT
East to southeast winds near 10 knots.
Seas 1 to 2 feet. Nearshore waters a light chop. Scattered
showers and thunderstorms.



GMZ052>055-072>075-191500-
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-
446 AM EDT Mon Aug 19 2019

SMALL CRAFT SHOULD EXERCISE CAUTION


TODAY
Northeast to east winds 15 to 20 knots. Seas 4 to
6 feet. Scattered showers and isolated thunderstorms.

TONIGHT
East to southeast winds 15 to 20 knots. Seas 4 to 6
feet, subsiding to 3 to 5 feet. Scattered showers and
thunderstorms.

TUESDAY AND TUESDAY NIGHT
East to southeast winds 10 to 15
knots. Seas 2 to 4 feet. Scattered showers and thunderstorms.

WEDNESDAY
East winds near 10 knots. Seas 2 to 3 feet.
Scattered showers and thunderstorms.

WEDNESDAY NIGHT AND THURSDAY
East winds 10 to 15 knots. Seas 2
to 3 feet. Scattered showers and thunderstorms.

THURSDAY NIGHT
Northeast to east winds 10 to 15 knots. Seas 2
to 3 feet. Scattered showers and thunderstorms.

FRIDAY
East winds 10 to 15 knots. Seas 2 to 3 feet. Scattered
showers and thunderstorms.

FRIDAY NIGHT
East to southeast winds 10 to 15 knots. Seas 2 to
3 feet. Scattered showers and thunderstorms.



GMZ033-034-191500-
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-
446 AM EDT Mon Aug 19 2019

TODAY
Northeast to east winds near 15 knots. Seas 2 to 4 feet.
Isolated showers and thunderstorms in the morning, then scattered
showers and isolated thunderstorms developing.

TONIGHT
East winds near 15 knots. Seas 2 to 4 feet. Scattered
showers and thunderstorms.

TUESDAY
East to southeast winds 10 to 15 knots. Seas 2 to
3 feet. Scattered showers and thunderstorms.

TUESDAY NIGHT
East to southeast winds 10 to 15 knots. Seas
around 2 feet. Scattered showers and thunderstorms.

WEDNESDAY
East to southeast winds near 10 knots. Seas 1 to
2 feet. Scattered showers and thunderstorms.

WEDNESDAY NIGHT AND THURSDAY
East winds 5 to 10 knots. Seas 1
to 2 feet. Scattered showers and thunderstorms.

THURSDAY NIGHT
East winds 5 to 10 knots. Seas around 1 foot.
Scattered showers and thunderstorms.

FRIDAY
Northeast to east winds 5 to 10 knots. Seas 1 to
2 feet. Scattered showers and thunderstorms.

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



WLC