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National Weather Service Marine Forecast FZUS52 KKEY

FZUS52 KKEY 182126
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
426 PM EST Sun Feb 18 2018

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.

GMZ005-190330-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
426 PM EST Sun Feb 18 2018

SYNOPSIS
An Atlantic ridge of high pressure will extend across
the Southeastern United States tonight through Thursday night.
This ridge of high pressure should shift southward Friday and
Friday night. Fresh to strong east to southeast breezes expected
on all Keys coastal waters tonight through Friday night.

The Approximate Shoreward Edge of the Gulf Stream current, as of
February 17th, 2018...

31 NM South of Dry Tortugas Light, on Loggerhead Key.
10 NM South of Cosgrove Shoal Light, off the Marquesas Keys.
 3 NM South of Sand Key Light, off Key West.
 7 NM South of Looe Key, off Big Pine Key.
 9 NM South of Sombrero Key Light, off Marathon.
13 NM Southeast of Alligator Reef Light, off Islamorada.
12 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.



GMZ031-190330-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
426 PM EST Sun Feb 18 2018

TONIGHT
East to southeast winds near 15 knots. Bay waters a
moderate chop.

MONDAY
East to southeast winds 15 to 20 knots. Bay waters
choppy.

MONDAY NIGHT
East to southeast winds 15 to 20 knots. Bay waters
choppy. Scattered showers.

TUESDAY
East to southeast winds 15 to 20 knots. Bay waters
choppy. Isolated showers.

TUESDAY NIGHT AND WEDNESDAY
East to southeast winds 15 to 20
knots. Bay waters choppy.

WEDNESDAY NIGHT AND THURSDAY
East winds near 15 knots. Bay
waters a moderate chop. Isolated showers.

THURSDAY NIGHT AND FRIDAY
East winds 15 to 20 knots. Bay
waters choppy. Isolated showers.

FRIDAY NIGHT
East winds near 15 knots. Bay waters a moderate
chop. Isolated showers.



GMZ032-035-190330-
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-
426 PM EST Sun Feb 18 2018

SMALL CRAFT SHOULD EXERCISE CAUTION


TONIGHT
East to southeast winds 15 to 20 knots. Seas 2 to 3
feet. Nearshore waters choppy. 

MONDAY
East to southeast winds 15 to 20 knots. Seas 2 to 3
feet. Nearshore waters choppy.

MONDAY NIGHT
East to southeast winds near 20 knots. Seas 2 to 4
feet. Nearshore waters rough. Scattered showers.

TUESDAY
East to southeast winds near 20 knots. Seas 2 to 4
feet. Nearshore waters rough. Isolated showers.

TUESDAY NIGHT
East to southeast winds near 20 knots. Seas 2 to
4 feet. Nearshore waters rough. 

WEDNESDAY
East to southeast winds 15 to 20 knots. Seas 2 to 3
feet. Nearshore waters choppy.

WEDNESDAY NIGHT THROUGH FRIDAY NIGHT
East winds 15 to 20 knots.
Seas 2 to 3 feet. Nearshore waters choppy. Isolated showers.



GMZ042>044-190330-
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-
426 PM EST Sun Feb 18 2018

SMALL CRAFT ADVISORY IN EFFECT FOR INCREASING WINDS


TONIGHT
East winds 15 to 20 knots, increasing to near 20 knots
after midnight. Seas 2 to 4 feet. Nearshore waters choppy,
becoming rough.

MONDAY
East to southeast winds near 20 knots. Seas 3 to 5 feet.
Nearshore waters rough.

MONDAY NIGHT
East to southeast winds near 20 knots. Seas 3 to 5
feet. Nearshore waters rough. Scattered showers.

TUESDAY
East to southeast winds near 20 knots. Seas 3 to 5
feet. Nearshore waters rough. Isolated showers.

TUESDAY NIGHT
East to southeast winds near 20 knots. Seas 3 to
5 feet. Nearshore waters rough.

WEDNESDAY
East to southeast winds 15 to 20 knots. Seas 2 to 4
feet. Nearshore waters choppy.

WEDNESDAY NIGHT THROUGH FRIDAY NIGHT
East winds 15 to 20 knots.
Seas 2 to 4 feet. Nearshore waters choppy. Isolated showers.



GMZ052>055-072>075-190330-
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-
426 PM EST Sun Feb 18 2018

SMALL CRAFT ADVISORY IN EFFECT FOR INCREASING WINDS


TONIGHT
East winds 15 to 20 knots, increasing to near 20 knots
by midnight. Seas 4 to 6 feet, building to 5 to 7 feet. Isolated
showers.

MONDAY
East to southeast winds near 20 knots. Seas 5 to 7 feet.

MONDAY NIGHT
East to southeast winds 20 to 25 knots. Seas 6 to
8 feet. Scattered showers.

TUESDAY
East to southeast winds 20 to 25 knots. Seas 6 to 8
feet. Isolated showers.

TUESDAY NIGHT
East to southeast winds 20 to 25 knots. Seas 6 to
8 feet.

WEDNESDAY
East to southeast winds near 20 knots. Seas 5 to 7
feet.

WEDNESDAY NIGHT THROUGH FRIDAY NIGHT
East winds near 20 knots.
Seas 5 to 7 feet. Isolated showers.



GMZ033-034-190330-
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-
426 PM EST Sun Feb 18 2018

SMALL CRAFT SHOULD EXERCISE CAUTION


TONIGHT
East winds 15 to 20 knots. Seas 3 to 5 feet.

MONDAY
East to southeast winds 15 to 20 knots. Seas 3 to 5
feet. 

MONDAY NIGHT
East to southeast winds near 20 knots. Seas 4 to 6
feet. Scattered showers.

TUESDAY
East to southeast winds near 20 knots. Seas 4 to 6
feet. Isolated showers.

TUESDAY NIGHT
East to southeast winds near 20 knots. Seas 4 to
6 feet. 

WEDNESDAY
East to southeast winds 15 to 20 knots. Seas 3 to 5
feet. 

WEDNESDAY NIGHT THROUGH FRIDAY NIGHT
East winds 15 to 20 knots.
Seas 3 to 5 feet. Isolated showers.


BS