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Coastal Waters Forecast (CWF)

Issued by Key West, FL (KEY)

                            
000
FZUS52 KKEY 182039
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
439 PM EDT Wed Sep 18 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.

GMZ005-190245-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
439 PM EDT Wed Sep 18 2019

.SYNOPSIS...High pressure will consolidate over the southeastern
United States tonight. Fresh to strong, northeast to east breezes
are expected across the coastal waters of the Florida Keys 
tonight through Sunday. Breezes will occasionally peak and lull, 
especially in the lee of the Florida Peninsula.

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

58 NM South of Dry Tortugas Light...on Loggerhead Key.
32 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
22 NM South of Sand Key Light...off Key West.
14 NM South of Looe Key...off Big Pine Key.
15 NM South of Sombrero Key Light...off Marathon.
11 NM Southeast of Alligator Reef Light...off Islamorada.
 6 NM Southeast of Molasses Reef Light...off Key Largo.
 5 NM East of Carysfort Reef Light...off Ocean Reef.

Gulf Stream Information Courtesy of the Naval Oceanographic Office.

$$

GMZ031-190245-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
439 PM EDT Wed Sep 18 2019

...SMALL CRAFT ADVISORY IN EFFECT...

.TONIGHT...Northeast winds 10 to 15 knots, increasing to near 20 
knots. Bay waters a light to moderate chop, becoming rough. 
Isolated showers and thunderstorms.
.THURSDAY...Northeast winds near 20 knots, decreasing to 15 to 20
knots. Bay waters rough, becoming choppy. Isolated showers and 
thunderstorms.
.THURSDAY NIGHT...Northeast to east winds 15 to 20 knots,
increasing to 20 to 25 knots. Bay waters choppy, becoming very
rough. Scattered showers and isolated thunderstorms. 
.FRIDAY...Northeast to east winds near 20 knots. Bay waters
rough. Scattered showers and isolated thunderstorms. 
.FRIDAY NIGHT...Northeast to east winds 20 to 25 knots. Bay
waters very rough. Scattered showers and isolated thunderstorms. 
.SATURDAY...Northeast to east winds near 20 knots. Bay waters
rough. Scattered showers and isolated thunderstorms. 
.SATURDAY NIGHT THROUGH SUNDAY NIGHT...Northeast to east winds 
near 20 knots. Bay waters rough. Scattered showers and isolated 
thunderstorms. 
.MONDAY...Northeast to east winds 15 to 20 knots. Bay waters
choppy. Scattered showers and isolated thunderstorms. 
.MONDAY NIGHT...Northeast winds 15 to 20 knots. Bay waters
choppy. Scattered showers and isolated thunderstorms. 

$$

GMZ032-035-190245-
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-
439 PM EDT Wed Sep 18 2019

...SMALL CRAFT ADVISORY IN EFFECT...

.TONIGHT...Northeast winds 10 to 15 knots, increasing to near 20
knots. Seas 1 to 2 feet, building to 2 to 3 feet, except building
to around 4 feet west of the Marquesas Keys. Nearshore waters a 
light to moderate chop, becoming rough. Isolated showers and 
thunderstorms.
.THURSDAY...Northeast winds near 20 knots, decreasing to 15 to 20
knots. Seas 2 to 3 feet, except around 4 feet west of the
Marquesas Keys. Nearshore waters rough, becoming choppy. 
Scattered showers and isolated thunderstorms. 
.THURSDAY NIGHT...Northeast to east winds 15 to 20 knots, 
increasing to 20 to 25 knots. Seas 2 to 4 feet, except around 5
feet west of the Marquesas Keys. Nearshore waters choppy, 
becoming very rough. Scattered showers and isolated thunderstorms.
.FRIDAY AND FRIDAY NIGHT...Northeast to east winds 20 to 25 
knots. Seas 2 to 4 feet, except around 5 feet west of the 
Marquesas Keys. Nearshore waters very rough. Scattered showers and
isolated thunderstorms. 
.SATURDAY...Northeast to east winds near 20 knots. Seas 2 to 3 
feet, except around 4 feet west of the Marquesas Keys. Nearshore 
waters rough. Scattered showers and isolated thunderstorms. 
.SATURDAY NIGHT THROUGH SUNDAY NIGHT...Northeast to east winds 
near 20 knots. Seas 2 to 3 feet, except around 4 feet west of the
Marquesas Keys. Nearshore waters rough. Scattered showers and 
isolated thunderstorms. 
.MONDAY...Northeast to east winds 15 to 20 knots. Seas 1 to 3 
feet, except 3 to 4 feet west of the Marquesas Keys. Nearshore 
waters choppy. Scattered showers and isolated thunderstorms. 
.MONDAY NIGHT...Northeast winds 15 to 20 knots. Seas 1 to 3 feet,
except 3 to 4 feet west of the Marquesas Keys. Nearshore waters 
choppy. Scattered showers and isolated thunderstorms. 

$$

GMZ042>044-190245-
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-
439 PM EDT Wed Sep 18 2019

...SMALL CRAFT ADVISORY IN EFFECT...

.TONIGHT...Northeast winds near 15 knots, increasing to near 20
knots. Seas 2 to 3 feet, building to 3 to 4 feet. Nearshore 
waters a moderate chop, becoming rough. Scattered showers and 
isolated thunderstorms. 
.THURSDAY...Northeast winds near 20 knots, decreasing to 15 to 20
knots. Seas 3 to 4 feet, subsiding to 2 to 3 feet. Nearshore 
waters rough, becoming choppy. Isolated showers and thunderstorms.
.THURSDAY NIGHT...Northeast to east winds 15 to 20 knots,
increasing to 20 to 25 knots. Seas 2 to 3 feet, building to 3 to 5
feet. Nearshore waters choppy, becoming very rough. Scattered 
showers and isolated thunderstorms.
.FRIDAY AND FRIDAY NIGHT...Northeast to east winds 20 to 25 
knots. Seas 3 to 5 feet. Nearshore waters very rough. Scattered 
showers and isolated thunderstorms. 
.SATURDAY...Northeast to east winds near 20 knots. Seas 3 to 4 
feet. Nearshore waters rough. Scattered showers and isolated 
thunderstorms. 
.SATURDAY NIGHT THROUGH SUNDAY NIGHT...Northeast to east winds 
near 20 knots. Seas 3 to 4 feet. Nearshore waters rough. 
Scattered showers and isolated thunderstorms.  
.MONDAY AND MONDAY NIGHT...Northeast to east winds 15 to 20 
knots. Seas 2 to 4 feet. Nearshore waters choppy. Scattered 
showers and isolated thunderstorms. 

$$

GMZ052-072-190245-
Straits of Florida from Ocean Reef to Craig Key out 20 NM-
Straits of Florida from Ocean Reef to Craig Key 20 to 60 NM out-
439 PM EDT Wed Sep 18 2019

...SMALL CRAFT ADVISORY IN EFFECT...

.TONIGHT...Northeast winds 15 to 20 knots, increasing to 20 to 25
knots. Seas 5 to 7 feet, composed of north swells. Seas building 
to 6 to 8 feet. Scattered showers and isolated thunderstorms. 
.THURSDAY...Northeast winds near 20 knots. Seas 5 to 8 feet,
composed of north swells. Scattered showers and isolated 
thunderstorms.
.THURSDAY NIGHT...Northeast to east winds 20 to 25 knots. Seas 6 
to 8 feet, composed of north swells. Scattered showers and 
isolated thunderstorms.
.FRIDAY...Northeast to east winds near 20 knots. Seas 5 to
8 feet, composed of north swells. Scattered showers and isolated 
thunderstorms.
.FRIDAY NIGHT...East winds 20 to 25 knots. Seas 6 to 8 feet, 
composed of north swells. Scattered showers and isolated 
thunderstorms.
.SATURDAY...Northeast to east winds near 20 knots. Seas 5 to
8 feet, composed of north swells. Scattered showers and isolated 
thunderstorms.
.SATURDAY NIGHT...East winds near 20 knots. Seas 5 to 8 feet,
composed of north swells. Scattered showers and isolated 
thunderstorms.
.SUNDAY AND SUNDAY NIGHT...Northeast to east winds 20 to 25 
knots. Seas 5 to 8 feet. Scattered showers and isolated 
thunderstorms. 
.MONDAY AND MONDAY NIGHT...Northeast winds near 20 knots. Seas 4 
to 7 feet. Scattered showers and isolated thunderstorms. 

$$

GMZ053>055-073>075-190245-
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 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-
439 PM EDT Wed Sep 18 2019

...SMALL CRAFT ADVISORY IN EFFECT...

.TONIGHT...Northeast winds near 15 knots, increasing to near 20 
knots. Seas 3 to 4 feet, building to 4 to 6 feet. Scattered 
showers and isolated thunderstorms. 
.THURSDAY...Northeast winds near 20 knots. Seas 4 to 7 feet. 
Scattered showers and isolated thunderstorms. 
.THURSDAY NIGHT THROUGH FRIDAY NIGHT...Northeast to east winds 20
to 25 knots. Seas 5 to 8 feet. Scattered showers and isolated 
thunderstorms. 
.SATURDAY...Northeast to east winds near 20 knots. Seas 4 to 7 
feet. Scattered showers and isolated thunderstorms. 
.SATURDAY NIGHT AND SUNDAY...East winds near 20 knots. Seas 4 to 
7 feet. Scattered showers and isolated thunderstorms. 
.SUNDAY NIGHT...Northeast to east winds 20 to 25 knots. Seas 5 to
8 feet. Scattered showers and isolated thunderstorms. 
.MONDAY AND MONDAY NIGHT...Northeast to east winds near 20 knots.
Seas 4 to 7 feet. Scattered showers and isolated thunderstorms. 

$$

GMZ033-034-190245-
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-
439 PM EDT Wed Sep 18 2019

...SMALL CRAFT ADVISORY IN EFFECT...

.TONIGHT...Northeast winds near 10 knots, increasing to near 20
knots late. Seas around 2 feet, building to 3 to 5 feet. 
Scattered showers and isolated thunderstorms. 
.THURSDAY...Northeast winds near 20 knots, decreasing to near 15 
knots. Seas 4 to 5 feet, subsiding to 2 to 4 feet. Scattered 
showers and isolated thunderstorms. 
.THURSDAY NIGHT...Northeast to east winds 15 to 20 knots, 
increasing to 20 to 25 knots. Seas 3 to 5 feet, building to 4 to 6
feet. Scattered showers and isolated thunderstorms. 
.FRIDAY...Northeast to east winds near 20 knots. Seas 3 to
6 feet. Scattered showers and isolated thunderstorms. 
.FRIDAY NIGHT...Northeast to east winds 20 to 25 knots. Seas 4 to
6 feet. Scattered showers and isolated thunderstorms. 
.SATURDAY...East winds near 20 knots. Seas 3 to 6 feet. Scattered
showers and isolated thunderstorms. 
.SATURDAY NIGHT AND SUNDAY...Northeast to east winds near 20 
knots. Seas 3 to 6 feet. Scattered showers and isolated 
thunderstorms. 
.SUNDAY NIGHT...Northeast to east winds 20 to 25 knots. Seas 4 to
6 feet. Scattered showers and isolated thunderstorms. 
.MONDAY AND MONDAY NIGHT...Northeast to east winds 15 to 20 
knots. Seas 3 to 5 feet. Scattered showers and isolated 
thunderstorms. 

$$

CLR