Coastal Waters Forecast
Issued by NWS

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FZUS52 KKEY 150320
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
1020 PM EST Thu Dec 14 2017

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.

GMZ005-150930-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1020 PM EST Thu Dec 14 2017

.SYNOPSIS...Weak high pressure near the Florida Keys will remain
nearby through Friday. Another high pressure system will intensify
and advance eastward across the southeastern United States and
western North Atlantic Friday night through Sunday night before
sliding eastward into the Western Atlantic early next week.

The Approximate Shoreward Edge of the Gulf Stream as of
December 12, 2017,

50 NM South of Dry Tortugas Light, on Loggerhead Key.
13 NM South of Cosgrove Shoal Light, off the Marquesas Keys.
21 NM South of Sand Key Light, off Key West.
31 NM South of Looe Key, off Big Pine Key.
36 NM South of Sombrero Key Light, off Marathon.
15 NM Southeast of Alligator Reef Light, off Islamorada.
10 NM Southeast of Molasses Reef Light, off Key Largo.
 2 NM East of Carysfort Reef Light, off Ocean Reef.

Gulf Stream Information Courtesy of the Naval Oceanographic Office.

$$

GMZ031-150930-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
1020 PM EST Thu Dec 14 2017

.OVERNIGHT...Variable winds around 5 knots. Bay waters smooth.
.FRIDAY AND FRIDAY NIGHT...Northeast winds 5 to 10 knots. Bay
waters smooth to a light chop.
.SATURDAY AND SATURDAY NIGHT...Northeast to east winds 10 to 15
knots. Bay waters a light to moderate chop. Isolated showers.
.SUNDAY...East winds 10 to 15 knots. Bay waters a light to
moderate chop. Isolated showers.
.SUNDAY NIGHT...East winds 10 to 15 knots. Bay waters a light to
moderate chop. Isolated showers.
.MONDAY...East to southeast winds 5 to 10 knots. Bay waters
smooth to a light chop. Isolated showers.
.MONDAY NIGHT AND TUESDAY...East winds near 5 knots. Bay waters
smooth. Isolated showers.
.TUESDAY NIGHT...Wind variable less than 5 knots becoming north
to northeast near 5 knots after midnight. Bay waters smooth.
Isolated showers.

$$

GMZ032-035-150930-
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-
1020 PM EST Thu Dec 14 2017

.OVERNIGHT...Variable winds around 5 knots. Seas less than 1 foot.
Nearshore waters smooth.
.FRIDAY AND FRIDAY NIGHT...Northeast winds 5 to 10 knots. Seas 1
foot or less. Nearshore waters smooth to a light chop.
.SATURDAY AND SATURDAY NIGHT...Northeast to east winds increasing
to near 15 knots. Seas building to 1 to 2 feet. Nearshore waters
becoming a moderate chop. Isolated showers.
.SUNDAY...East winds 10 to 15 knots. Seas around 1 foot. Nearshore
waters a light to moderate chop. Isolated showers.
.SUNDAY NIGHT...East winds 10 to 15 knots. Seas around 1 foot.
Nearshore waters a light to moderate chop. Isolated showers.
.MONDAY...East to southeast winds 5 to 10 knots. Seas 1 foot or
less. Nearshore waters smooth to a light chop. Isolated showers.
.MONDAY NIGHT AND TUESDAY...East winds 5 to 10 knots. Seas 1 foot
or less. Nearshore waters smooth to a light chop. Isolated
showers.
.TUESDAY NIGHT...North to northeast winds 5 to 10 knots. Seas
1 foot or less. Nearshore waters smooth to a light chop. Isolated
showers.

$$

GMZ042>044-150930-
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-
1020 PM EST Thu Dec 14 2017

.OVERNIGHT...East to southeast winds 5 to 10 knots, becoming
variable. Seas 1 foot or less. Nearshore waters smooth to a light
chop.
.FRIDAY AND FRIDAY NIGHT...Northeast winds 5 to 10 knots. Seas
around 1 foot. Nearshore waters smooth to a light chop.
.SATURDAY AND SATURDAY NIGHT...Northeast to east winds increasing
to near 15 knots. Seas building to 2 to 3 feet. Nearshore waters
becoming moderate chop. Isolated showers.
.SUNDAY...East winds 10 to 15 knots. Seas 1 to 3 feet. Nearshore
waters a light to moderate chop. Isolated showers.
.SUNDAY NIGHT...East winds 10 to 15 knots. Seas 1 to 3 feet.
Nearshore waters a light to moderate chop. Isolated showers.
.MONDAY...East to southeast winds near 10 knots. Seas 1 to 2
feet. Nearshore waters a light chop. Isolated showers.
.MONDAY NIGHT AND TUESDAY...East winds 5 to 10 knots. Seas around
1 foot. Nearshore waters smooth to a light chop. Isolated
showers.
.TUESDAY NIGHT...North to northeast winds 5 to 10 knots. Seas
around 1 foot. Nearshore waters smooth to a light chop. Isolated
showers.

$$

GMZ052>055-072>075-150930-
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-
1020 PM EST Thu Dec 14 2017

.OVERNIGHT...Variable winds 5 to 10 knots. Seas 1 to 2 feet.
.FRIDAY AND FRIDAY NIGHT...Northeast to east winds 10 to 15
knots. Seas 1 to 3 feet. Isolated showers.
.SATURDAY THROUGH SUNDAY...East winds increasing to 15 to 20
knots. Seas building to 4 to 6 feet. Isolated showers.
.SUNDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 5 feet.
Isolated showers.
.MONDAY...East to southeast winds 10 to 15 knots. Seas 2 to 4
feet. Isolated showers.
.MONDAY NIGHT AND TUESDAY...East winds decreasing to 5 to 10
knots. Seas subsiding to 1 to 3 feet. Isolated showers.
.TUESDAY NIGHT...Northeast winds 5 to 10 knots. Seas 1 to 3 feet.
Isolated showers.

$$

GMZ033-034-150930-
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-
1020 PM EST Thu Dec 14 2017

.OVERNIGHT...Variable winds near 5 knots. Seas 1 to 2 feet.
.FRIDAY AND FRIDAY NIGHT...Northeast to east winds 10 to 15
knots. Seas 1 to 3 feet.
.SATURDAY AND SATURDAY NIGHT...Northeast to east winds increasing
to near 15 knots. Seas building to 2 to 4 feet. Isolated showers.
.SUNDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Isolated
showers.
.SUNDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.
Isolated showers.
.MONDAY...East to southeast winds 10 to 15 knots. Seas 2 to
3 feet. Isolated showers.
.MONDAY NIGHT AND TUESDAY...East winds decreasing to 5 to 10
knots. Seas subsiding to 1 to 2 feet. Isolated showers.
.TUESDAY NIGHT...North to northeast winds 5 to 10 knots. Seas
1 foot or less. Isolated showers.

$$



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