299
FZUS52 KKEY 121530
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
1030 AM EST Wed Nov 12 2025

Florida Bay, Hawk Channel and Straits of Florida from Ocean Reef
to south of Dry Tortugas, and the extreme southeastern Gulf of
America, 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.

GMZ005-130330-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1030 AM EST Wed Nov 12 2025

.SYNOPSIS...Moderate to occasionally fresh breezes will gradually
slacken through the week as an area of high pressure builds in
across the Southeastern United States. Moderate to occasionally
fresh breezes will remain possible through the end of the work
week. Then breezes should slacken to gentle to moderate as the
high pressure flattens and weakens.

The Approximate Shoreward Edge of the Gulf Stream as of November
4...

42 NM South of Dry Tortugas Light...on Loggerhead Key.
42 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
30 NM South of Sand Key Light...off Key West.
29 NM South of Looe Key...off Big Pine Key.
27 NM Southeast of Sombrero Key Light...off Marathon.
14 NM Southeast of Alligator Reef Light...off Islamorada.
 4 NM Southeast of Molasses Reef Light...off Key Largo.
 3 NM Southeast of Carysfort Reef Light...off Ocean Reef.

Gulf Stream Information Courtesy of the National Weather Service
in Key West based on products from NASA SPoRT.

$$

GMZ031-130330-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
1030 AM EST Wed Nov 12 2025

.THIS AFTERNOON...Northeast winds near 15 knots. Bay waters a
moderate chop.
.TONIGHT...Northeast winds near 15 knots. Bay waters a moderate
chop.
.THURSDAY...Northeast winds near 15 knots. Bay waters a moderate
chop.
.THURSDAY NIGHT...Northeast winds near 15 knots. Bay waters a
moderate chop.
.FRIDAY...Northeast winds near 15 knots. Bay waters a moderate
chop.
.FRIDAY NIGHT...Northeast winds 10 to 15 knots. Bay waters a
light to moderate chop.
.SATURDAY...Northeast to east winds near 10 knots. Bay waters a
light chop.
.SATURDAY NIGHT...East winds near 10 knots. Bay waters a light
chop.
.SUNDAY...East winds 5 to 10 knots. Bay waters smooth to a light
chop. Isolated showers.
.SUNDAY NIGHT...East winds 5 to 10 knots. Bay waters smooth to a
light chop. Isolated showers.

$$

GMZ032-035-130330-
Bayside and Gulfside from Craig Key to west end of Seven Mile
Bridge-
Gulf of America from west end of Seven Mile Bridge to Halfmoon
Shoal out to 5 Fathoms-
1030 AM EST Wed Nov 12 2025

...SMALL CRAFT SHOULD EXERCISE CAUTION UNTIL WINDS DECREASE...

.THIS AFTERNOON...Northeast winds 15 to 20 knots early, decreasing
to near 15 knots. Seas 2 to 4 feet, occasionally to 5 feet,
except 3 to 5 feet, occasionally to 6 feet west of the Marquesas
Keys. Nearshore waters choppy, becoming a moderate chop.
.TONIGHT...Northeast winds near 15 knots. Seas 2 to 3 feet.
Nearshore waters a moderate chop.
.THURSDAY...Northeast winds 15 to 20 knots. Seas 2 to 3 feet.
Nearshore waters choppy.
.THURSDAY NIGHT...Northeast winds near 15 knots, increasing to 15
to 20 knots. Seas around 2 feet, except 2 to 3 feet west of the
Marquesas Keys. Nearshore waters a moderate chop, becoming choppy.
.FRIDAY...Northeast winds 15 to 20 knots, decreasing to near 15
knots. Seas 2 to 3 feet, except around 3 feet west of the
Marquesas Keys. Nearshore waters choppy, becoming a moderate
chop.
.FRIDAY NIGHT...Northeast to east winds 10 to 15 knots. Seas 1 to
2 feet. Nearshore waters a light to moderate chop.
.SATURDAY...Northeast winds 10 to 15 knots. Seas 1 to 2 feet.
Nearshore waters a light to moderate chop.
.SATURDAY NIGHT...Northeast to east winds near 10 knots. Seas
around 1 foot. Nearshore waters a light chop.
.SUNDAY...Northeast to east winds 5 to 10 knots. Seas 1 foot or
less. Nearshore waters smooth to a light chop. Isolated showers.
.SUNDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less.
Nearshore waters smooth to a light chop. Isolated showers.

$$

GMZ042>044-130330-
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 AM EST Wed Nov 12 2025

...SMALL CRAFT SHOULD EXERCISE CAUTION...

.THIS AFTERNOON...Northeast winds 15 to 20 knots. Seas 2 to
3 feet, except 3 to 5 feet, occasionally to 6 feet west of
Cosgrove Shoal Light. Nearshore waters choppy.
.TONIGHT...Northeast winds near 15 knots. Seas 2 to 3 feet.
Nearshore waters a moderate chop.
.THURSDAY...Northeast winds 15 to 20 knots. Seas 2 to 3 feet.
Nearshore waters choppy.
.THURSDAY NIGHT...Northeast winds 15 to 20 knots. Seas 2 to 3
feet. Nearshore waters choppy.
.FRIDAY...Northeast winds 15 to 20 knots, decreasing to near 15
knots. Seas 2 to 3 feet. Nearshore waters a moderate chop.
.FRIDAY NIGHT...Northeast to east winds 10 to 15 knots. Seas
around 2 feet. Nearshore waters a light to moderate chop.
.SATURDAY...Northeast to east winds 10 to 15 knots. Seas 1 to
2 feet. Nearshore waters a light to moderate chop.
.SATURDAY NIGHT...Northeast to east winds near 10 knots. Seas 1
to 2 feet. Nearshore waters a light chop. Isolated showers.
.SUNDAY...Northeast to east winds 5 to 10 knots. Seas around 1
foot. Nearshore waters smooth to a light chop. Isolated showers.
.SUNDAY NIGHT...East winds 5 to 10 knots. Seas around 1 foot.
Nearshore waters smooth to a light chop. Isolated showers.

$$

GMZ052>055-072>075-130330-
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 AM EST Wed Nov 12 2025

...SMALL CRAFT SHOULD EXERCISE CAUTION...

.THIS AFTERNOON...Northeast winds 15 to 20 knots. Seas 4 to 6
feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 7
seconds and west to northwest 3 feet at 8 seconds.
.TONIGHT...Northeast to east winds 15 to 20 knots. Seas 4 to
6 feet, occasionally to 8 feet. Wave Detail: Northeast to east
5 feet at 6 seconds and west to northwest 2 feet at 7 seconds.
.THURSDAY...Northeast winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Wave Detail: Northeast 4 feet at
5 seconds and northwest 1 foot at 5 seconds. Isolated showers.
.THURSDAY NIGHT...Northeast winds 15 to 20 knots. Seas 3 to
5 feet, occasionally to 6 feet. Isolated showers.
.FRIDAY...Northeast winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Isolated showers.
.FRIDAY NIGHT...Northeast to east winds decreasing to near 15
knots. Seas 3 to 4 feet, occasionally to 5 feet.
.SATURDAY...Northeast to east winds 10 to 15 knots. Seas 2 to
3 feet.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.
Isolated showers.
.SUNDAY AND SUNDAY NIGHT...East winds near 10 knots. Seas 1 to 2
feet. Isolated showers.

$$

GMZ033-034-130330-
Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM
out and beyond 5 fathoms-
Gulf of America including Dry Tortugas and Rebecca Shoal Channel-
1030 AM EST Wed Nov 12 2025

...SMALL CRAFT SHOULD EXERCISE CAUTION UNTIL WINDS DECREASE...

.THIS AFTERNOON...Northeast winds 15 to 20 knots early, decreasing
to 10 to 15 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave
Detail: North 4 feet at 6 seconds.
.TONIGHT...Northeast winds near 15 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Wave Detail: North 3 feet at 5 seconds.
.THURSDAY...Northeast winds 15 to 20 knots. Seas 2 to 4 feet.
Wave Detail: North 3 feet at 5 seconds.
.THURSDAY NIGHT...Northeast winds near 15 knots. Seas 2 to 3
feet.
.FRIDAY...Northeast winds 10 to 15 knots. Seas 2 to 3 feet.
.FRIDAY NIGHT...Northeast to east winds 10 to 15 knots. Seas 1 to
2 feet.
.SATURDAY...Northeast to east winds 10 to 15 knots, becoming 5 to
10 knots in the afternoon. Seas 1 to 2 feet.
.SATURDAY NIGHT...Northeast to east winds near 10 knots. Seas
around 1 foot.
.SUNDAY...Northeast to east winds 5 to 10 knots. Seas around 1
foot.
.SUNDAY NIGHT...Northeast to east winds 5 to 10 knots. Seas around
1 foot. Isolated showers.

$$