Coastal Waters Forecast
Issued by NWS

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932
FZUS52 KKEY 171954
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
354 PM EDT Fri Aug 17 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.

GMZ005-180230-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
354 PM EDT Fri Aug 17 2018

.SYNOPSIS...A high pressure system centered near Bermuda will
persist tonight and Saturday. This area of high pressure will
drift northeastward into the western North Atlantic Saturday
night through Wednesday.

The Approximate Shoreward Edge of the Gulf Stream as of
August 16...

28 NM South of Dry Tortugas Light...on Loggerhead Key.
27 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
25 NM South of Sand Key Light...off Key West.
17 NM South of Looe Key...off Big Pine Key.
12 NM South of Sombrero Key Light...off Marathon.
 5 NM Southeast of Alligator Reef Light...off Islamorada.
 Less than 1 NM Southeast of Molasses Reef Light...off Key Largo.
 Less than 1 NM East of Carysfort Reef Light...off Ocean Reef.

Gulf Stream Information Courtesy of the Naval Oceanographic Office.

$$

GMZ031-180230-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
354 PM EDT Fri Aug 17 2018

.TONIGHT...East winds 10 to 15 knots. Bay waters a light to
moderate chop. Scattered showers and isolated thunderstorms developing.
.SATURDAY...East to southeast winds 10 to 15 knots. Bay waters a
light to moderate chop. Scattered showers and isolated
thunderstorms.
.SATURDAY NIGHT AND SUNDAY...East to southeast winds near 10
knots. Bay waters a light chop. Scattered showers and isolated
thunderstorms.
.SUNDAY NIGHT...East to southeast winds near 10 knots. Bay waters
a light chop. Isolated showers and thunderstorms.
.MONDAY...East to southeast winds near 10 knots. Bay waters a
light chop. Scattered showers and isolated thunderstorms.
.MONDAY NIGHT...East winds 10 to 15 knots. Bay waters a light to
moderate chop. Scattered showers and isolated thunderstorms.
.TUESDAY...East to southeast winds near 10 knots. Bay waters a
light chop. Scattered showers and isolated thunderstorms.
.TUESDAY NIGHT...East to southeast winds 5 to 10 knots. Bay
waters smooth to a light chop. Scattered showers and isolated
thunderstorms.
.WEDNESDAY AND WEDNESDAY NIGHT...Southeast winds 5 to 10 knots.
Bay waters smooth to a light chop. Scattered showers and isolated
thunderstorms.

$$

GMZ032-035-180230-
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-
354 PM EDT Fri Aug 17 2018

.TONIGHT...East winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore
waters a light to moderate chop. Scattered showers and isolated
thunderstorms developing.
.SATURDAY...East to southeast winds 10 to 15 knots. Seas 1 to 2
feet. Nearshore waters a light to moderate chop. Scattered showers
and isolated thunderstorms.
.SATURDAY NIGHT AND SUNDAY...East to southeast winds near 10
knots. Seas around 1 foot. Nearshore waters a light chop.
Scattered showers and isolated thunderstorms.
.SUNDAY NIGHT...East to southeast winds near 10 knots. Seas around
1 foot. Nearshore waters a light chop. Isolated showers and
thunderstorms.
.MONDAY...East to southeast winds near 10 knots. Seas around 1
foot. Nearshore waters a light chop. Scattered showers and
isolated thunderstorms.
.MONDAY NIGHT AND TUESDAY...East to southeast winds 10 to 15
knots. Seas 1 to 2 feet. Nearshore waters a light to moderate
chop. Scattered showers and isolated thunderstorms.
.TUESDAY NIGHT...East to southeast winds near 10 knots. Seas
around 1 foot. Nearshore waters a light chop. Scattered showers
and isolated thunderstorms.
.WEDNESDAY AND WEDNESDAY NIGHT...East to southeast winds 5 to 10
knots. Seas 1 foot or less. Nearshore waters smooth to a light
chop. Scattered showers and isolated thunderstorms.

$$

GMZ042>044-180230-
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-
354 PM EDT Fri Aug 17 2018

.TONIGHT...East winds 10 to 15 knots. Seas around 2 feet.
Nearshore waters a light to moderate chop. Scattered showers and
isolated thunderstorms developing.
.SATURDAY THROUGH SUNDAY...East to southeast winds 10 to 15
knots. Seas around 2 feet. Nearshore waters a light to moderate
chop. Scattered showers and isolated thunderstorms.
.SUNDAY NIGHT...East to southeast winds 10 to 15 knots. Seas
around 2 feet. Nearshore waters a light to moderate chop.
Isolated showers and thunderstorms.
.MONDAY...East to southeast winds 10 to 15 knots. Seas around 2
feet. Nearshore waters a light to moderate chop. Scattered showers
and isolated thunderstorms.
.MONDAY NIGHT AND TUESDAY...East to southeast winds 10 to 15
knots. Seas around 2 feet. Nearshore waters a light to moderate
chop. Scattered showers and isolated 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 5 to 10
knots. Seas around 1 foot. Nearshore waters smooth to a light
chop. Scattered showers and isolated thunderstorms.

$$

GMZ052>055-072>075-180230-
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-
354 PM EDT Fri Aug 17 2018

.TONIGHT...East winds near 15 knots. Seas 3 to 5 feet. Scattered
showers and isolated thunderstorms developing.
.SATURDAY THROUGH SUNDAY...East to southeast winds 10 to 15
knots. Seas 2 to 4 feet. Scattered showers and isolated
thunderstorms.
.SUNDAY NIGHT...East to southeast winds near 15 knots. Seas 3 to
5 feet. Isolated showers and thunderstorms.
.MONDAY...East winds near 15 knots. Seas 3 to 5 feet. Scattered
showers and isolated thunderstorms.
.MONDAY NIGHT...East to southeast winds near 15 knots. Seas 3 to
5 feet. Scattered showers and isolated thunderstorms.
.TUESDAY AND TUESDAY NIGHT...East to southeast winds 10 to 15
knots. Seas 2 to 4 feet. Scattered showers and isolated
thunderstorms.
.WEDNESDAY AND WEDNESDAY NIGHT...East to southeast winds near 10
knots. Seas 2 to 3 feet. Scattered showers and isolated
thunderstorms.

$$

GMZ033-034-180230-
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-
354 PM EDT Fri Aug 17 2018

.TONIGHT...East winds near 15 knots. Seas 2 to 3 feet. Scattered
showers and isolated thunderstorms developing.
.SATURDAY...East to southeast winds 10 to 15 knots. Seas 1 to 3
feet. Scattered showers and isolated thunderstorms.
.SATURDAY NIGHT AND SUNDAY...East to southeast winds near 10
knots. Seas 1 to 2 feet. Scattered showers and isolated
thunderstorms.
.SUNDAY NIGHT...East to southeast winds 10 to 15 knots. Seas 1 to
3 feet. Isolated showers and thunderstorms.
.MONDAY...East to southeast winds 10 to 15 knots. Seas 1 to
3 feet. Scattered showers and isolated thunderstorms.
.MONDAY NIGHT AND TUESDAY...East to southeast winds 10 to 15
knots. Seas 1 to 3 feet. Scattered showers and isolated
thunderstorms.
.TUESDAY NIGHT...East to southeast winds near 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 around 1 foot. Scattered showers and isolated
thunderstorms.

$$

CLR



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