Coastal Waters Forecast
Issued by NWS Key West, FL

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FZUS52 KKEY 050330
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
1030 PM EST Wed Dec 4 2024

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.

Wave Detail will include details about the period and direction
of origin for the highest energy waves. Long-period swells coming
from a different direction than the wind would be included in the
Wave Detail.

GMZ005-050930-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1030 PM EST Wed Dec 4 2024

.SYNOPSIS...As surface high pressure continues to slide eastward
off the Southeast, northeast to east breezes will slacken through
Friday. Breezes will freshen once again Friday night through
Saturday night, with a weak frontal passage and a secondary high
building in its wake. As this high slides offshore early next
week, moderate to fresh breezes will clock around to the east to
southeast.

The Approximate Shoreward Edge of the Gulf Stream as of November
27...

32 NM South of Dry Tortugas Light...on Loggerhead Key.
21 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
13 NM South of Sand Key Light...off Key West.
 9 NM South of Looe Key...off Big Pine Key.
11 NM South of Sombrero Key Light...off Marathon.
16 NM Southeast of Alligator Reef Light...off Islamorada.
13 NM Southeast of Molasses Reef Light...off Key Largo.
10 NM East of Carysfort Reef Light...off Ocean Reef.

Gulf Stream Information Courtesy of the National Weather Service in
Key West based on products from the Real Time Ocean Forecast
System.

$$

GMZ031-050930-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
1030 PM EST Wed Dec 4 2024

.OVERNIGHT...North to northeast winds near 10 knots. Bay waters a
light chop.
.THURSDAY...Northeast winds near 10 knots, decreasing to 5 to 10
knots. Bay waters a light chop, becoming smooth to a light chop.
.THURSDAY NIGHT...North to northeast winds 5 to 10 knots,
increasing to near 10 knots. Bay waters smooth to a light chop,
becoming a light chop.
.FRIDAY...North to northeast winds 5 to 10 knots. Bay waters
smooth to a light chop.
.FRIDAY NIGHT...North to northeast winds near 10 knots,
increasing to 10 to 15 knots. Bay waters a light chop, becoming a
light to moderate chop.
.SATURDAY...Northeast to east winds near 15 knots. Bay waters a
moderate chop.
.SATURDAY NIGHT...Northeast to east winds 15 to 20 knots,
decreasing to near 15 knots. Bay waters choppy, becoming a moderate
chop.
.SUNDAY...Northeast to east winds near 15 knots. Bay waters a
moderate chop.
.SUNDAY NIGHT...East winds near 15 knots. Bay waters a moderate
chop.
.MONDAY...East to southeast winds near 15 knots, decreasing to 10
to 15 knots. Bay waters a moderate chop, becoming a light to
moderate chop.
.MONDAY NIGHT...East to southeast winds 10 to 15 knots. Bay
waters a light to moderate chop.

$$

GMZ032-035-050930-
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-
1030 PM EST Wed Dec 4 2024

.OVERNIGHT...Northeast to east winds 10 to 15 knots, decreasing
to near 10 knots. Seas 1 to 2 feet, except 2 to 3 feet west of the
Marquesas Keys. Nearshore waters a light to moderate chop,
becoming a light chop.
.THURSDAY...Northeast winds near 10 knots, decreasing to 5 to 10
knots. Seas 1 to 2 feet. Nearshore waters a light chop, becoming
smooth to a light chop.
.THURSDAY NIGHT...North to northeast winds 5 to 10 knots,
increasing to near 10 knots. Seas around 1 foot. Nearshore waters
smooth to a light chop, becoming a light chop.
.FRIDAY...North to northeast winds 5 to 10 knots. Seas around 1
foot. Nearshore waters smooth to a light chop.
.FRIDAY NIGHT...North to northeast winds near 10 knots, increasing
to near 15 knots. Seas 1 to 2 feet, except building to 2 to 3 feet
west of the Marquesas Keys. Nearshore waters a light chop,
becoming a moderate chop.
.SATURDAY...Northeast winds near 15 knots. Seas building to 2 to
3 feet, except building to 3 to 4 feet west of the Marquesas
Keys. Nearshore waters a moderate chop.
.SATURDAY NIGHT...Northeast to east winds 15 to 20 knots. Seas
2 to 3 feet, except 3 to 4 feet, occasionally to 5 feet west of
the Marquesas Keys. Nearshore waters choppy.
.SUNDAY...Northeast to east winds 15 to 20 knots. Seas 2 to
4 feet, except 4 to 5 feet, occasionally to 6 feet west of the
Marquesas Keys. Nearshore waters choppy.
.SUNDAY NIGHT...East winds 15 to 20 knots. Seas 2 to 4 feet,
except 4 to 5 feet, occasionally to 6 feet west of the Marquesas
Keys. Nearshore waters choppy.
.MONDAY...East to southeast winds 15 to 20 knots, decreasing to
near 15 knots. Seas subsiding to 2 to 3 feet, except subsiding to 3
to 4 feet, occasionally to 5 feet west of the Marquesas Keys.
Nearshore waters choppy, becoming a moderate chop.
.MONDAY NIGHT...East to southeast winds 10 to 15 knots. Seas 1 to
2 feet, except 2 to 3 feet west of the Marquesas Keys. Nearshore
waters a light to moderate chop.

$$

GMZ042>044-050930-
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-
1030 PM EST Wed Dec 4 2024

.OVERNIGHT...Northeast to east winds near 15 knots, decreasing to
near 10 knots. Seas 2 to 4 feet, occasionally to 5 feet,
subsiding to 2 to 3 feet. Nearshore waters a moderate chop,
becoming a light chop.
.THURSDAY...Northeast winds near 10 knots, decreasing to 5 to 10
knots. Seas around 2 feet, subsiding to 1 to 2 feet. Nearshore
waters a light chop, becoming smooth to a light chop.
.THURSDAY NIGHT...Northeast winds 5 to 10 knots, becoming north to
northeast and increasing to near 10 knots. Seas 1 to 2 feet.
Nearshore waters smooth to a light chop, becoming a light chop.
.FRIDAY...North to northeast winds near 10 knots. Seas 1 to 2 feet.
Nearshore waters a light chop.
.FRIDAY NIGHT...North to northeast winds 10 to 15 knots, increasing
to near 15 knots. Seas 1 to 2 feet, except building to 2 to 3 feet
west of Cosgrove Shoal Light. Nearshore waters a light to moderate
chop, becoming a moderate chop.
.SATURDAY...Northeast winds 15 to 20 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Nearshore waters choppy.
.SATURDAY NIGHT...Northeast to east winds 15 to 20 knots. Seas 2 to
4 feet, occasionally to 5 feet, except 3 to 5 feet, occasionally to
6 feet west of Cosgrove Shoal Light. Nearshore waters choppy.
.SUNDAY...Northeast to east winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet, except 4 to 5 feet, occasionally to 6 feet
west of Cosgrove Shoal Light. Nearshore waters choppy.
.SUNDAY NIGHT...East winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Nearshore waters choppy.
.MONDAY...East to southeast winds 15 to 20 knots, decreasing to near
15 knots. Seas 3 to 5 feet, occasionally to 6 feet, subsiding to 3
to 4 feet, occasionally to 5 feet. Nearshore waters choppy, becoming
a moderate chop.
.MONDAY NIGHT...East to southeast winds near 15 knots. Seas 2 to 4
feet, occasionally to 5 feet. Nearshore waters a moderate chop.

$$

GMZ052>055-072>075-050930-
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-
1030 PM EST Wed Dec 4 2024

.OVERNIGHT...Northeast to east winds near 15 knots, decreasing to
10 to 15 knots. Seas 4 to 6 feet, occasionally to 7 feet,
subsiding to 3 to 5 feet, occasionally to 6 feet. Wave Detail:
Northeast to east 5 feet at 6 seconds.
.THURSDAY...Northeast to east winds 10 to 15 knots. Seas 2 to 4
feet, occasionally to 5 feet. Wave Detail: Northeast to east 3
feet at 6 seconds and northwest 1 foot at 5 seconds.
.THURSDAY NIGHT...Northeast winds 10 to 15 knots. Seas 2 to
3 feet. Wave Detail: Northeast to east 2 feet at 5 seconds.
.FRIDAY...North to northeast winds 10 to 15 knots. Seas 2 to 3
feet.
.FRIDAY NIGHT...North to northeast winds 10 to 15 knots,
increasing to 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5
feet, building to 3 to 5 feet, occasionally to 6 feet.
.SATURDAY...Northeast winds 15 to 20 knots. Seas 4 to 6 feet,
occasionally to 8 feet.
.SATURDAY NIGHT...Northeast to east winds near 20 knots. Seas
5 to 7 feet, occasionally to 9 feet. Isolated showers.
.SUNDAY...Northeast to east winds near 20 knots. Seas 5 to 7
feet, occasionally to 9 feet.
.SUNDAY NIGHT...East winds near 20 knots. Seas 6 to 8 feet,
occasionally to 10 feet, subsiding to 5 to 7 feet, occasionally to
9 feet.
.MONDAY...East to southeast winds near 20 knots, decreasing to 15
to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet.
.MONDAY NIGHT...East to southeast winds 15 to 20 knots. Seas 3 to
5 feet, occasionally to 6 feet.

$$

GMZ033-034-050930-
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-
1030 PM EST Wed Dec 4 2024

.OVERNIGHT...Northeast to east winds 10 to 15 knots, decreasing
to near 10 knots. Seas subsiding to 2 to 3 feet. Wave Detail:
North to northeast 2 feet at 5 seconds.
.THURSDAY...Northeast near 10 knots, decreasing to winds 5 to 10
knots. Seas subsiding to 1 to 2 feet. Wave Detail: North 2 feet
at 4 seconds.
.THURSDAY NIGHT...North to northeast winds 5 to 10 knots,
increasing to near 10 knots. Seas 1 to 2 feet. Wave Detail: North
1 foot at 4 seconds.
.FRIDAY...Northeast winds near 10 knots, becoming north to
northeast winds 10 to 15 knots. Seas 1 to 2 feet.
.FRIDAY NIGHT...North to northeast winds 10 to 15 knots,
becoming northeast and increasing to 15 to 20 knots. Seas 1 to 2
feet, building to 2 to 3 feet.
.SATURDAY...Northeast winds 15 to 20 knots. Seas 2 to 4 feet,
occasionally to 5 feet.
.SATURDAY NIGHT...Northeast to east winds 15 to 20 knots,
increasing to near 20 knots. Seas building to 3 to 5 feet,
occasionally to 6 feet.
.SUNDAY...Northeast to east winds near 20 knots, becoming east and
decreasing to 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6
feet.
.SUNDAY NIGHT...East winds near 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet.
.MONDAY...East to southeast winds 15 to 20 knots, decreasing to
near 15 knots. Seas 3 to 5 feet, occasionally to 6 feet, subsiding
to 2 to 4 feet, occasionally to 5 feet.
.MONDAY NIGHT...East to southeast winds 10 to 15 knots. Seas 2 to
3 feet.

$$