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Coastal Waters Forecast (CWF)

Issued by Key West, FL (KEY)

                            
000
FZUS52 KKEY 192026
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
426 PM 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.

GMZ005-200230-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
426 PM EDT Mon Aug 19 2019

.SYNOPSIS...A trough over the Bahamas will slide west through the
coastal waters of the Florida Keys tonight and Tuesday. High 
pressure will stretch west across the Florida Peninsula Tuesday 
night through Friday night, sliding south towards the Keys this 
weekend. Breezes will begin to diminish Tuesday night and 
Wednesday, and gentle breezes are expected Wednesday night through
Saturday. 

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.

$$

GMZ031-200230-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
426 PM EDT Mon Aug 19 2019

.TONIGHT...East to southeast winds 10 to 15 knots, increasing to 
near 15 knots. Bay waters a light to moderate chop, becoming a 
moderate chop. Winds higher and bay waters rough in and near 
scattered showers and thunderstorms.
.TUESDAY...Southeast winds 10 to 15 knots, decreasing to near 10 
knots. Bay waters a light to moderate chop, becoming a light 
chop. Numerous showers and scattered thunderstorms. 
.TUESDAY NIGHT THROUGH WEDNESDAY NIGHT...East to southeast winds 
5 to 10 knots. Bay waters smooth to a light chop. Scattered 
showers and isolated thunderstorms. 
.THURSDAY...East to southeast winds 5 to 10 knots. Bay waters 
smooth to a light chop. Scattered showers and thunderstorms. 
.THURSDAY NIGHT...East winds 5 to 10 knots. Bay waters smooth to
a light chop. Scattered showers and isolated thunderstorms. 
.FRIDAY AND FRIDAY NIGHT...East to southeast winds 5 to 10 knots.
Bay waters smooth to a light chop. Scattered showers and 
thunderstorms. 
.SATURDAY AND SATURDAY NIGHT...Southeast winds 5 to 10 knots. Bay
waters smooth to a light chop. Scattered showers and 
thunderstorms.  

$$

GMZ032-035-200230-
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 EDT Mon Aug 19 2019

.TONIGHT...East to southeast winds 10 to 15 knots, increasing to 
near 15 knots. Seas 1 to 2 feet, building to 1 to 3 feet. 
Nearshore waters a light to moderate chop, becoming a moderate 
chop. Winds and seas higher in and near scattered showers and 
thunderstorms.
.TUESDAY...Southeast winds 10 to 15 knots, decreasing to near 10 
knots. Seas 1 to 3 feet, subsiding to 1 to 2 feet. Nearshore 
waters a light to moderate chop, becoming a light chop. Numerous 
showers and scattered thunderstorms.
.TUESDAY NIGHT...East to southeast winds near 10 knots. Seas
1 to 2 feet. Nearshore waters a light chop. Scattered showers and
isolated thunderstorms. 
.WEDNESDAY AND WEDNESDAY NIGHT...East to southeast winds near 10 
knots. Seas 1 to 2 feet. Nearshore waters a light chop. Scattered
showers and thunderstorms. 
.THURSDAY...East to southeast winds 5 to 10 knots. Seas 1 foot or
less. Nearshore waters smooth to a light chop. Scattered showers 
and thunderstorms. 
.THURSDAY NIGHT...East winds 5 to 10 knots. Seas around 1 foot. 
Nearshore waters smooth to a light chop. Scattered showers and 
isolated 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. 
.SATURDAY AND SATURDAY NIGHT...Southeast winds 5 to 10 knots. 
Seas 1 foot or less. Nearshore waters smooth to a light chop. 
Scattered showers and thunderstorms. 

$$

GMZ042>044-200230-
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 EDT Mon Aug 19 2019

.TONIGHT...East to southeast winds 10 to 15 knots, increasing to 
near 15 knots. Seas 1 to 3 feet, building to 2 to 3 feet. 
Nearshore waters a light to moderate chop, becoming a moderate 
chop. Winds and seas higher in and near numerous showers and 
scattered thunderstorms.
.TUESDAY...Southeast winds near 15 knots, decreasing to near 10
knots. Seas 2 to 3 feet, subsiding to 1 to 2 feet. Nearshore 
waters a moderate chop, becoming a light chop late. Numerous 
showers and scattered thunderstorms. 
.TUESDAY NIGHT...East to southeast winds near 10 knots. Seas 1 to
2 feet. Nearshore waters a light chop. Scattered showers and 
isolated thunderstorms. 
.WEDNESDAY AND WEDNESDAY NIGHT...East to southeast winds near 10 
knots. Seas 1 to 2 feet. Nearshore waters a light chop. Scattered
showers and thunderstorms. 
.THURSDAY...East to southeast winds near 10 knots. Seas 1 to
2 feet. Nearshore waters a light chop. Scattered showers and
thunderstorms. 
.THURSDAY NIGHT...East winds near 10 knots. Seas 1 to 2 feet.
Nearshore waters a light chop. Isolated 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. 
.SATURDAY AND SATURDAY NIGHT...Southeast winds 5 to 10 knots. 
Seas around 1 foot. Nearshore waters smooth to a light chop. 
Scattered showers and thunderstorms. 

$$

GMZ052>055-072>075-200230-
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 EDT Mon Aug 19 2019

...SMALL CRAFT SHOULD EXERCISE CAUTION FOR INCREASING WINDS...

.TONIGHT...East to southeast winds near 15 knots, increasing to 
15 to 20 knots. Seas 3 to 5 feet, building to 4 to 6 feet. Winds 
and seas higher in and near numerous showers and scattered 
thunderstorms.
.TUESDAY...Southeast winds near 15 knots, decreasing to 10 to 15
knots. Seas 3 to 5 feet, subsiding to 2 to 4 feet. Numerous 
showers and scattered thunderstorms. 
.TUESDAY NIGHT...East to southeast winds near 10 knots. Seas 1 to
3 feet. Scattered showers and isolated thunderstorms. 
.WEDNESDAY AND WEDNESDAY NIGHT...East to southeast winds near 10 
knots. Seas 1 to 3 feet. Scattered showers and thunderstorms. 
.THURSDAY...East to southeast winds near 10 knots. Seas 1 to 3 
feet. Scattered showers and thunderstorms. 
.THURSDAY NIGHT...East winds near 10 knots. Seas 1 to 3 feet. 
Isolated showers and thunderstorms. 
.FRIDAY AND FRIDAY NIGHT...East to southeast winds near 10 knots.
Seas 1 to 3 feet. Scattered showers and thunderstorms. 
.SATURDAY AND SATURDAY NIGHT...Southeast winds 5 to 10 knots. 
Seas 1 to 2 feet. Scattered showers and thunderstorms. 

$$

GMZ033-034-200230-
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 EDT Mon Aug 19 2019

.TONIGHT...East to southeast winds 10 to 15 knots, becoming east
and increasing to near 15 knots. Seas 1 to 3 feet, building to 2
to 4 feet. Winds and seas higher in and near numerous showers and
scattered thunderstorms.
.TUESDAY...Southeast winds 10 to 15 knots, decreasing to near 10 
knots. Seas 2 to 3 feet, subsiding to 1 to 3 feet. Scattered 
showers and thunderstorms.
.TUESDAY NIGHT...East to southeast winds 5 to 10 knots. Seas
1 to 2 feet. Scattered showers and isolated thunderstorms. 
.WEDNESDAY AND WEDNESDAY NIGHT...East to southeast winds 5 to 10 
knots. Seas 1 to 2 feet. Scattered showers and thunderstorms. 
.THURSDAY...East to southeast winds 5 to 10 knots. Seas 1 to
2 feet. Scattered showers and thunderstorms. 
.THURSDAY NIGHT...East winds 5 to 10 knots. Seas 1 to 2 feet.
Isolated showers and thunderstorms. 
.FRIDAY AND FRIDAY NIGHT...East winds near 10 knots. Seas 1 to 3 
feet. Scattered showers and thunderstorms. 
.SATURDAY AND SATURDAY NIGHT...Southeast winds 5 to 10 knots. 
Seas 1 to 2 feet. Scattered showers and thunderstorms. 

$$

Futterman