938
FZUS52 KKEY 110933
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
433 AM EST Tue Nov 11 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.

GMZ005-112145-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
433 AM EST Tue Nov 11 2025

.SYNOPSIS...Strong northerly breezes will be at their peak early
this morning in the wake of a cold front that pushed across the
Florida Keys marine zones yesterday. Winds will shift out of the
northeast and gradually slacken through the week while an area of
high pressure builds in behind the front. Moderate to occasionally
fresh breezes will remain possible through the end of the work
week.

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.

$$

GMZ031-112145-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
433 AM EST Tue Nov 11 2025

...SMALL CRAFT ADVISORY IN EFFECT...

.TODAY...North to northeast winds near 25 knots, decreasing to
near 20 knots. Bay waters extremely rough, becoming rough.
.TONIGHT...North to northeast winds near 20 knots, decreasing to
15 to 20 knots. Bay waters rough, becoming choppy.
.WEDNESDAY...Northeast winds near 15 knots. Bay waters a moderate
chop.
.WEDNESDAY NIGHT...Northeast winds 10 to 15 knots. Bay waters a
light to moderate chop.
.THURSDAY...Northeast winds near 15 knots. Bay waters a moderate
chop.
.THURSDAY NIGHT AND FRIDAY...Northeast winds near 15 knots. Bay
waters a moderate chop.
.FRIDAY NIGHT AND SATURDAY...Northeast winds 10 to 15 knots. Bay
waters a light to moderate chop.
.SATURDAY NIGHT...East winds 10 to 15 knots. Bay waters a light
to moderate chop.

$$

GMZ032-035-112145-
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-
433 AM EST Tue Nov 11 2025

...SMALL CRAFT ADVISORY IN EFFECT...

.TODAY...North to northeast winds 25 to 30 knots, decreasing to 20
to 25 knots. Seas 4 to 6 feet, occasionally to 8 feet, except 7
to 10 feet, occasionally to 13 feet west of the Marquesas Keys.
Nearshore waters extremely rough, becoming very rough.
.TONIGHT...Northeast winds near 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet, except 5 to 6 feet, occasionally to 8 feet
west of the Marquesas Keys. Nearshore waters rough.
.WEDNESDAY...Northeast 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 the Marquesas Keys. Nearshore waters choppy.
.WEDNESDAY NIGHT...Northeast winds near 15 knots. Seas around 2
feet, except 2 to 3 feet west of the Marquesas Keys. 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. Seas around 2
feet, except 2 to 3 feet west of the Marquesas Keys. Nearshore
waters a moderate chop.
.FRIDAY...Northeast winds near 15 knots. Seas 2 to 3 feet.
Nearshore waters a moderate chop.
.FRIDAY NIGHT...Northeast to east winds 10 to 15 knots. Seas 1 to
2 feet, except around 2 feet west of the Marquesas Keys.
Nearshore waters a light to moderate chop.
.SATURDAY...Northeast to east winds 10 to 15 knots. Seas 1 to
2 feet, except around 2 feet west of the Marquesas Keys.
Nearshore waters a light to moderate chop.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas 1 to 2 feet,
except around 2 feet west of the Marquesas Keys. Nearshore waters
a light to moderate chop.

$$

GMZ042>044-112145-
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-
433 AM EST Tue Nov 11 2025

...SMALL CRAFT ADVISORY IN EFFECT...

.TODAY...North to northeast winds 25 to 30 knots, decreasing to
20 to 25 knots. Seas 2 to 4 feet, occasionally to 5 feet, except 6
to 8 feet, occasionally to 10 feet west of Cosgrove Shoal Light.
Nearshore waters extremely rough, becoming very rough.
.TONIGHT...Northeast winds 20 to 25 knots, decreasing to 15 to 20
knots. Seas 2 to 4 feet, occasionally to 5 feet, except 4 to 6
feet, occasionally to 8 feet west of Cosgrove Shoal Light.
Nearshore waters very rough, becoming choppy.
.WEDNESDAY...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.
.WEDNESDAY NIGHT...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. Seas 2 to
3 feet. Nearshore waters a moderate chop.
.FRIDAY...Northeast winds near 15 knots. Seas 2 to 3 feet.
Nearshore waters a moderate chop.
.FRIDAY NIGHT AND SATURDAY...Northeast to east winds 10 to 15
knots. Seas around 2 feet. Nearshore waters a light to moderate
chop.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas 1 to 2 feet.
Nearshore waters a light to moderate chop.

$$

GMZ052>055-072>075-112145-
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-
433 AM EST Tue Nov 11 2025

...SMALL CRAFT ADVISORY IN EFFECT...

.TODAY...North to northeast winds 25 to 30 knots, becoming
northeast and decreasing to 20 to 25 knots late. Seas 7 to 10
feet, occasionally to 13 feet. Wave Detail: North to northeast 9
feet at 7 seconds and west to northwest 7 feet at 9 seconds.
.TONIGHT...Northeast winds 20 to 25 knots, becoming northeast to
east and decreasing to near 20 knots. Seas 6 to 9 feet,
occasionally to 11 feet. Wave Detail: Northeast 8 feet at 8
seconds and west to northwest 5 feet at 9 seconds. Isolated
showers.
.WEDNESDAY...Northeast to east winds 15 to 20 knots. Seas 5 to
7 feet, occasionally to 9 feet. Wave Detail: Northeast to east
6 feet at 7 seconds and west to northwest 3 feet at 9 seconds.
.WEDNESDAY NIGHT...Northeast to east winds 15 to 20 knots. Seas
3 to 5 feet, occasionally to 6 feet.
.THURSDAY...Northeast winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet.
.THURSDAY NIGHT...Northeast winds 15 to 20 knots. Seas 3 to
5 feet, occasionally to 6 feet. Isolated showers.
.FRIDAY...Northeast winds near 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet.
.FRIDAY NIGHT...Northeast to east winds near 15 knots. Seas 2 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.

$$

GMZ033-034-112145-
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-
433 AM EST Tue Nov 11 2025

...SMALL CRAFT ADVISORY IN EFFECT...

.TODAY...North to northeast winds 25 to 30 knots, decreasing to
20 to 25 knots. Seas 7 to 10 feet, occasionally to 13 feet,
subsiding to 5 to 8 feet, occasionally to 10 feet. Wave Detail:
North 9 feet at 7 seconds, becoming north 7 feet at 7 seconds.
.TONIGHT...Northeast winds 20 to 25 knots, decreasing to 15 to 20
knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail:
Northwest 5 feet at 8 seconds and northeast 4 feet at 5 seconds.
.WEDNESDAY...Northeast winds 15 to 20 knots, decreasing to near
15 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail:
Northwest to north 4 feet at 6 seconds.
.WEDNESDAY NIGHT...Northeast winds near 15 knots. Seas 2 to 3
feet.
.THURSDAY...Northeast winds 15 to 20 knots. Seas 2 to 3 feet.
.THURSDAY NIGHT...Northeast to east winds near 15 knots. Seas 2
to 3 feet.
.FRIDAY...Northeast winds near 15 knots. Seas 2 to 3 feet.
.FRIDAY NIGHT...Northeast to east winds 10 to 15 knots. Seas
around 2 feet.
.SATURDAY...Northeast to east winds 10 to 15 knots. Seas around 2
feet.
.SATURDAY NIGHT...Northeast to east winds 10 to 15 knots. Seas 1
to 2 feet.

$$

JAM