Coastal Waters Forecast
Issued by NWS

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FZUS52 KKEY 190313
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
1013 PM EST Sat Nov 18 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.

GMZ005-190930-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1013 PM EST Sat Nov 18 2017

.SYNOPSIS...A weak cold front will progress southward down the
Florida peninsula overnight and Sunday. This feeble cold front
should pass through the Florida Keys Sunday night. The cold front
should stall near the Bahamas Monday, before moving northward as a
warm front Monday night. An area of low pressure will likely
develop over the central or eastern Gulf of Mexico by the middle
of next week.

The approximate shoreward edge of the Gulf Stream current, as of
November 18th, 2017,

72 NM South of Dry Tortugas Light, on Loggerhead Key.
14 NM South of Cosgrove Shoal Light, off the Marquesas Keys.
 3 NM South of Sand Key Light, off Key West.
 Less than 1 NM South of Sombrero Key Light, off Marathon.
 1 NM Southeast of Alligator Reef Light, off Islamorada.
 2 NM Southeast of Molasses Reef Light, off Key Largo.
 4 NM East of Carysfort Reef Light, off Ocean Reef.

Gulf Stream Information Courtesy of the Naval Oceanographic Office.

$$

GMZ031-190930-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
1013 PM EST Sat Nov 18 2017

.OVERNIGHT...Northeast to east winds 5 to 10 knots, becoming
north. Bay waters smooth to a light chop.
.SUNDAY...Northwest to north winds near 10 knots. Bay waters a
light chop.
.SUNDAY NIGHT...Northwest to north winds near 10 knots, becoming
northeast and increasing to 15 to 20 knots after midnight. Bay
waters a light chop, becoming choppy. Isolated showers.
.MONDAY...Northeast to east winds 15 to 20 knots. Bay waters
choppy. Scattered showers.
.MONDAY NIGHT...East winds near 15 knots. Bay waters a moderate
chop. Scattered showers.
.TUESDAY...East to southeast winds 10 to 15 knots, decreasing to 5
to 10 knots by noon. Bay waters a light to moderate chop, becoming
mostly smooth. Scattered showers.
.TUESDAY NIGHT...Variable winds 5 to 10 knots. Bay waters mostly
smooth. Scattered showers.
.WEDNESDAY...Variable winds 5 to 10 knots, becoming west to
northwest and increasing to near 10 knots in the afternoon. Bay
waters mostly smooth, becoming a light chop. Scattered showers.
.WEDNESDAY NIGHT...West to northwest winds 10 to 15 knots. Bay
waters a light to moderate chop. Scattered showers.
.THURSDAY...Northwest winds near 15 knots. Bay waters a moderate
chop. Scattered showers.
.THURSDAY NIGHT...Northwest to north winds near 15 knots. Bay
waters a moderate chop. Scattered showers.

$$

GMZ032-035-190930-
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-
1013 PM EST Sat Nov 18 2017

.OVERNIGHT...Northeast to east winds 5 to 10 knots, becoming
north. Seas less than 1 foot. Nearshore waters smooth to a light
chop.
.SUNDAY...Northwest to north winds near 10 knots. Seas 1 foot or
less. Nearshore waters a light chop.
.SUNDAY NIGHT...Northwest to north winds near 10 knots, becoming
northeast and increasing to 15 to 20 knots after midnight. Seas 1
foot or less, building to around 2 feet. Nearshore waters a light
chop, becoming choppy. Isolated showers.
.MONDAY...Northeast to east winds 15 to 20 knots. Seas around 2
feet. Nearshore waters choppy. Scattered showers.
.MONDAY NIGHT...East winds 15 to 20 knots. Seas around 2 feet.
Nearshore waters choppy. Scattered showers.
.TUESDAY...East to southeast winds near 15 knots, decreasing to
near 10 knots by noon. Seas 1 to 2 feet, subsiding to 1 foot or
less. Nearshore waters a moderate chop, becoming a light chop.
Scattered showers.
.TUESDAY NIGHT...Variable winds 5 to 10 knots. Seas less than 1
foot. Nearshore waters smooth to a light chop. Scattered showers.
.WEDNESDAY...Variable winds 5 to 10 knots, becoming west to
northwest and increasing to near 10 knots in the afternoon. Seas 1
foot or less. Nearshore waters mostly smooth, becoming a light
chop. Scattered showers.
.WEDNESDAY NIGHT...West to northwest winds 10 to 15 knots. Seas
around 1 foot. Nearshore waters a light to moderate chop.
Scattered showers.
.THURSDAY...Northwest winds near 15 knots. Seas 1 to 2 feet.
Nearshore waters a moderate chop. Scattered showers.
.THURSDAY NIGHT...Northwest to north winds near 15 knots. Seas 1
to 2 feet. Nearshore waters a moderate chop. Scattered showers.

$$

GMZ042>044-190930-
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-
1013 PM EST Sat Nov 18 2017

.OVERNIGHT...Northeast to east winds 5 to 10 knots, becoming
north. Seas around 1 foot. Nearshore waters smooth to a light
chop.
.SUNDAY...Northwest to north winds near 10 knots. Seas 1 to 2
feet. Nearshore waters a light chop.
.SUNDAY NIGHT...Northwest to north winds near 10 knots, becoming
northeast and increasing to 15 to 20 knots after midnight. Seas 1
to 2 feet, building to 2 to 4 feet. Nearshore waters a light chop,
becoming choppy. Isolated showers.
.MONDAY...Northeast to east winds near 20 knots. Seas 3 to 4 feet.
Nearshore waters rough. Scattered showers.
.MONDAY NIGHT...East winds 15 to 20 knots. Seas 2 to 4 feet.
Nearshore waters choppy. Scattered showers.
.TUESDAY...East to southeast winds near 15 knots, decreasing to
near 10 knots by noon. Seas 2 to 3 feet, subsiding to 1 to 2 feet.
Nearshore waters a moderate chop, becoming a light chop. Scattered
showers.
.TUESDAY NIGHT...Variable winds 5 to 10 knots. Seas around 1 foot.
Nearshore waters smooth to a light chop. Scattered showers.
.WEDNESDAY...Variable winds 5 to 10 knots, becoming west to
northwest and increasing to 10 to 15 knots in the afternoon. Seas
around 1 foot, building to around 2 feet. Nearshore waters mostly
smooth, becoming a light to moderate chop. Scattered showers.
.WEDNESDAY NIGHT...West to northwest winds near 15 knots. Seas 2
to 3 feet. Nearshore waters a moderate chop. Scattered showers.
.THURSDAY...Northwest winds 15 to 20 knots. Seas 2 to 4 feet.
Nearshore waters choppy. Scattered showers.
.THURSDAY NIGHT...Northwest to north winds 15 to 20 knots. Seas 2
to 4 feet. Nearshore waters choppy. Scattered showers.

$$

GMZ052>055-072>075-190930-
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-
1013 PM EST Sat Nov 18 2017

.OVERNIGHT...Northeast to east winds near 10 knots, becoming
north. Seas 2 to 3 feet. Isolated showers.
.SUNDAY...Northwest to north winds 10 to 15 knots. Seas 2 to 4
feet. Isolated showers.
.SUNDAY NIGHT...Northwest to north winds 10 to 15 knots, becoming
northeast and increasing to 15 to 20 knots after midnight. Seas 2
to 4 feet, building to 4 to 6 feet. Isolated showers.
.MONDAY...Northeast to east winds near 20 knots. Seas 4 to 7 feet.
Scattered showers.
.MONDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 6 feet.
Scattered showers.
.TUESDAY...East to southeast winds near 15 knots, decreasing to
near 10 knots by noon. Seas 3 to 5 feet, subsiding to 2 to 4 feet.
Scattered showers.
.TUESDAY NIGHT...East to southeast winds near 10 knots. Seas 2 to
3 feet. Scattered showers.
.WEDNESDAY...Variable winds 5 to 10 knots, becoming west to
northwest and increasing to 10 to 15 knots in the afternoon. Seas
around 2 feet, building to 2 to 4 feet. Scattered showers.
.WEDNESDAY NIGHT...West to northwest winds near 15 knots. Seas 3
to 5 feet. Scattered showers.
.THURSDAY...Northwest winds 15 to 20 knots. Seas 4 to 6 feet.
Scattered showers.
.THURSDAY NIGHT...Northwest to north winds 15 to 20 knots. Seas 4
to 6 feet. Scattered showers.

$$

GMZ033-034-190930-
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-
1013 PM EST Sat Nov 18 2017

.OVERNIGHT...Northeast winds 5 to 10 knots, becoming north. Seas 1
to 2 feet.
.SUNDAY...Northwest to north winds near 10 knots. Seas 1 to 2
feet.
.SUNDAY NIGHT...Northwest to north winds near 10 knots, becoming
northeast and increasing to 15 to 20 knots after midnight. Seas 1
to 2 feet, building to 3 to 5 feet. Isolated showers.
.MONDAY...Northeast to east winds near 20 knots. Seas 4 to 6 feet.
Scattered showers.
.MONDAY NIGHT...East winds 15 to 20 knots. Seas 3 to 5 feet.
Scattered showers.
.TUESDAY...East to southeast winds near 15 knots, decreasing to
near 10 knots by noon. Seas 2 to 4 feet, subsiding to around 2
feet. Scattered showers.
.TUESDAY NIGHT...Variable winds 5 to 10 knots. Seas 1 to 2 feet.
Scattered showers.
.WEDNESDAY...Variable winds 5 to 10 knots, becoming west to
northwest and increasing to 10 to 15 knots in the afternoon. Seas
1 to 2 feet, building to 2 to 3 feet. Scattered showers.
.WEDNESDAY NIGHT...West to northwest winds near 15 knots. Seas 2
to 4 feet. Scattered showers.
.THURSDAY...Northwest winds 15 to 20 knots. Seas 3 to 5 feet.
Scattered showers.
.THURSDAY NIGHT...Northwest to north winds 15 to 20 knots. Seas 3
to 5 feet. Scattered showers.

$$
BS


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