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Coastal Waters Forecast (CWF)

Issued by Key West, FL (KEY)

                            
000
FZUS52 KKEY 180832
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
432 AM 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.

GMZ005-181445-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
432 AM EDT Wed Sep 18 2019

.SYNOPSIS...High pressure over the east coast will continue to
build into the area, bringing moderate to fresh northwest breezes
to the Florida Keys coastal waters this evening. These general
conditions are expected to persist from this evening through this
weekend.

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.

$$

GMZ031-181445-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
432 AM EDT Wed Sep 18 2019

.TODAY...Northeast winds near 10 knots, increasing to 10 to 15 
knots by the late morning. Bay waters a light chop, becoming a
light to moderate chop. Isolated showers and thunderstorms. 
.TONIGHT AND THURSDAY...Northeast winds 10 to 15 knots. Bay 
waters a light to moderate chop. Isolated showers and 
thunderstorms.
.THURSDAY NIGHT...Northeast to east winds 10 to 15 knots. Bay
waters a light to moderate chop. Scattered showers and
thunderstorms. 
.FRIDAY...Northeast to east winds 15 to 20 knots. Bay waters
choppy. Scattered showers and thunderstorms. 
.FRIDAY NIGHT...Northeast to east winds 15 to 20 knots. Bay
waters choppy. Scattered showers and thunderstorms. 
.SATURDAY...East winds 15 to 20 knots. Bay waters choppy.
Scattered showers and thunderstorms. 
.SATURDAY NIGHT AND SUNDAY...Northeast to east winds 15 to 20 
knots. Bay waters choppy. Scattered showers and thunderstorms. 
.SUNDAY NIGHT...Northeast to east winds 10 to 15 knots. Bay
waters a light to moderate chop. Scattered showers and
thunderstorms. 

$$

GMZ032-035-181445-
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-
432 AM EDT Wed Sep 18 2019

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

$$

GMZ042-181445-
Hawk Channel from Ocean Reef to Craig Key out to the reef-
432 AM EDT Wed Sep 18 2019

.TODAY...Northeast winds 10 to 15 knots. Seas 1 to 3 feet.
Nearshore waters a light to moderate chop. Isolated showers and
thunderstorms. 
.TONIGHT...Northeast winds near 15 knots. Seas 2 to 4 feet.
Nearshore waters a moderate chop. Isolated showers and
thunderstorms. 
.THURSDAY...Northeast winds near 15 knots. Seas 2 to 4 feet. 
Nearshore waters a moderate chop. Isolated showers and 
thunderstorms. 
.THURSDAY NIGHT AND FRIDAY...Northeast to east winds 15 to 20 
knots. Seas 2 to 4 feet. Nearshore waters choppy. Scattered 
showers and thunderstorms. 
.FRIDAY NIGHT AND SATURDAY...Northeast to east winds 15 to 20 
knots. Seas 2 to 5 feet. Nearshore waters choppy. Scattered 
showers and thunderstorms. 
.SATURDAY NIGHT...East winds 15 to 20 knots. Seas 3 to 5 feet.
Nearshore waters choppy. Scattered showers and thunderstorms. 
.SUNDAY...Northeast to east winds 15 to 20 knots. Seas 3 to 5 
feet. Nearshore waters choppy. Scattered showers and 
thunderstorms. 
.SUNDAY NIGHT...Northeast to east winds near 15 knots. Seas 2 to
4 feet. Nearshore waters a moderate chop. Scattered showers and
thunderstorms. 

$$

GMZ043-044-181445-
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-
432 AM EDT Wed Sep 18 2019

.TODAY...Northeast winds 10 to 15 knots. Seas 1 to 3 feet. 
Nearshore waters a light to moderate chop. Isolated showers and 
thunderstorms. 
.TONIGHT...Northeast winds 15 to 20 knots. Seas 2 to 4 feet. 
Nearshore waters choppy. Isolated showers and thunderstorms. 
.THURSDAY THROUGH FRIDAY...Northeast winds 15 to 20 knots. Seas 2
to 4 feet. Nearshore waters choppy. Scattered showers and 
thunderstorms.  
.FRIDAY NIGHT...Northeast to east winds 15 to 20 knots. Seas 2 to
4 feet. Nearshore waters choppy. Scattered showers and
thunderstorms. 
.SATURDAY...East winds 15 to 20 knots. Seas 2 to 5 feet.
Nearshore waters choppy. Scattered showers and thunderstorms. 
.SATURDAY NIGHT...East winds 20 to 25 knots. Seas 3 to 5 feet.
Nearshore waters very rough. Scattered showers and thunderstorms.
.SUNDAY AND SUNDAY NIGHT...East winds 15 to 20 knots. Seas 2 to 4
feet. Nearshore waters choppy. Scattered showers and 
thunderstorms. 

$$

GMZ052-072-181445-
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-
432 AM EDT Wed Sep 18 2019

...SMALL CRAFT SHOULD EXERCISE CAUTION FOR SEAS...
...SMALL CRAFT ADVISORY LIKELY TONIGHT...

.TODAY...Northeast winds 10 to 15 knots. Seas 3 to 6 feet due to 
north swells. Scattered showers and thunderstorms. 
.TONIGHT AND THURSDAY...Northeast winds 15 to 20 knots. Seas 5 to
8 feet due to north swells. Isolated showers and thunderstorms. 
.THURSDAY NIGHT...Northeast to east winds 15 to 20 knots. Seas
5 to 8 feet due to north swells. Isolated showers and 
thunderstorms.
.FRIDAY...Northeast to east winds 15 to 20 knots. Seas 5 to
8 feet due to north swells. Scattered showers and thunderstorms.
.FRIDAY NIGHT...East winds near 20 knots. Seas 6 to 8 feet due to
north swells. Scattered showers and thunderstorms. 
.SATURDAY...Northeast to east winds near 20 knots. Seas 5 to
8 feet due to north swells. Scattered showers and thunderstorms. 
.SATURDAY NIGHT...East winds near 20 knots. Seas 5 to 8 feet due
to north swells. Scattered showers and thunderstorms. 
.SUNDAY AND SUNDAY NIGHT...Northeast to east winds 15 to 20 
knots. Seas 4 to 6 feet. Scattered showers and thunderstorms. 

$$

GMZ053>055-073>075-181445-
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-
432 AM EDT Wed Sep 18 2019

.TODAY...Northeast winds 10 to 15 knots. Seas 2 to 4 feet.
Isolated showers and thunderstorms. 
.TONIGHT...Northeast winds 15 to 20 knots. Seas 3 to 6 feet.
Scattered showers and thunderstorms. 
.THURSDAY...Northeast winds 15 to 20 knots. Seas 4 to 6 feet.
Scattered showers and thunderstorms. 
.THURSDAY NIGHT AND FRIDAY...Northeast to east winds 15 to 20 
knots. Seas 4 to 6 feet. Scattered showers and thunderstorms.
.FRIDAY NIGHT THROUGH SATURDAY NIGHT...East winds 15 to 20 
knots. Seas 5 to 7 feet. Scattered showers and thunderstorms.
.SUNDAY...Northeast to east winds 15 to 20 knots. Seas 4 to
6 feet. Scattered showers and thunderstorms. 
.SUNDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 6 feet. 
Scattered showers and thunderstorms. 

$$

GMZ033-034-181445-
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-
432 AM EDT Wed Sep 18 2019

.TODAY...North to northeast winds 10 to 15 knots. Seas 1 to 2 
feet. Isolated showers and thunderstorms.
.TONIGHT...Northeast winds 15 to 20 knots. Seas 2 to 4 feet.
Scattered showers and thunderstorms. 
.THURSDAY...Northeast winds near 15 knots. Seas 2 to 4 feet.
Scattered showers and thunderstorms. 
.THURSDAY NIGHT AND FRIDAY...Northeast to east winds 15 to 20 
knots. Seas 3 to 5 feet. Scattered showers and thunderstorms.
.FRIDAY NIGHT...Northeast to east winds 20 to 25 knots. Seas 3 
to 6 feet. Scattered showers and thunderstorms. 
.SATURDAY...East winds near 20 knots. Seas 3 to 5 feet. Scattered
showers and thunderstorms. 
.SATURDAY NIGHT...East winds 20 to 25 knots. Seas 3 to 6 feet.
Scattered showers and thunderstorms. 
.SUNDAY...East winds 15 to 20 knots. Seas 2 to 5 feet. Scattered
showers and thunderstorms. 
.SUNDAY NIGHT...East winds 15 to 20 knots. Seas 2 to 4 feet.
Scattered showers and thunderstorms. 

$$

Devanas