Coastal Waters Forecast
Issued by NWS Key West, FL

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118
FZUS52 KKEY 120333
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
1033 PM 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.

GMZ005-121545-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1033 PM EST Tue Nov 11 2025

.SYNOPSIS...Fresh to strong breezes will shift further northeast
and 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.

$$

GMZ031-121545-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
1033 PM EST Tue Nov 11 2025

...SMALL CRAFT ADVISORY IN EFFECT...

.OVERNIGHT...North to northeast winds near 20 knots. Bay waters
rough.
.WEDNESDAY...Northeast winds near 15 knots. Bay waters a moderate
chop.
.WEDNESDAY NIGHT...Northeast to east 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 decreasing to 10 to 15 knots. Bay
waters becoming a light to moderate chop.
.SATURDAY...Northeast winds 10 to 15 knots. Bay waters a light to
moderate chop.
.SATURDAY NIGHT...Northeast to east winds 10 to 15 knots. Bay
waters a light to moderate chop.
.SUNDAY...East winds near 10 knots. Bay waters a light chop.
Isolated showers.
.SUNDAY NIGHT...East to southeast winds near 10 knots. Bay waters
a light chop. Isolated showers.

$$

GMZ032-035-121545-
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-
1033 PM EST Tue Nov 11 2025

...SMALL CRAFT ADVISORY IN EFFECT...

.OVERNIGHT...Northeast winds near 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet, except 5 to 7 feet, occasionally to
9 feet west of the Marquesas Keys. Nearshore waters rough.
.WEDNESDAY...Northeast winds 15 to 20 knots, decreasing to near 15
knots. Seas 2 to 4 feet, occasionally to 5 feet, except 4 to 5
feet, occasionally to 6 feet west of the Marquesas Keys. Nearshore
waters choppy, becoming a moderate chop.
.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,
except 3 to 4 feet west of the Marquesas Keys. Nearshore waters
choppy.
.THURSDAY NIGHT...Northeast winds near 15 knots, increasing to 15
to 20 knots. Seas 2 to 3 feet, except 3 to 4 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, subsiding to 1 to 2 feet. West of the
Marquesas Keys, seas 3 to 4 feet, subsiding to 2 to 3 feet.
Nearshore waters choppy, becoming a moderate chop.
.FRIDAY NIGHT...Northeast to east winds decreasing to 10 to 15
knots. Seas 1 to 3 feet. Nearshore waters becoming a light to
moderate chop.
.SATURDAY...Northeast winds 10 to 15 knots. Seas subsiding to 1
to 2 feet. Nearshore waters a light to moderate chop.
.SATURDAY NIGHT...Northeast to east winds 10 to 15 knots. Seas
1 to 2 feet. Nearshore waters a light to moderate chop.
.SUNDAY...East winds near 10 knots. Seas subsiding to around 1
foot. Nearshore waters a light chop. Isolated showers.
.SUNDAY NIGHT...East to southeast winds near 10 knots. Seas
around 1 foot. Nearshore waters a light chop. Isolated showers.

$$

GMZ042>044-121545-
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-
1033 PM EST Tue Nov 11 2025

...SMALL CRAFT ADVISORY IN EFFECT...

.OVERNIGHT...Northeast winds near 20 knots. Seas 2 to 4 feet,
occasionally to 5 feet. West of Cosgrove Shoal Light, seas 5 to 7
feet, occasionally to 9 feet, subsiding to 4 to 5 feet,
occasionally to 6 feet. Nearshore waters rough.
.WEDNESDAY...Northeast winds 15 to 20 knots. Seas 2 to 4 feet,
occasionally to 5 feet, except 4 to 5 feet, occasionally to
6 feet west of Cosgrove Shoal Light. Nearshore waters choppy.
.WEDNESDAY NIGHT...Northeast to east winds 15 to 20 knots. Seas
2 to 4 feet, occasionally to 5 feet. Nearshore waters choppy.
.THURSDAY...Northeast winds 15 to 20 knots. Seas 2 to 3 feet,
except 3 to 4 feet west of Cosgrove Shoal Light. Nearshore waters
choppy.
.THURSDAY NIGHT...Northeast winds 15 to 20 knots. Seas 2 to
3 feet, except 3 to 4 feet west of Cosgrove Shoal Light.
Nearshore waters choppy.
.FRIDAY...Northeast winds 15 to 20 knots, decreasing to near 15
knots. Seas 2 to 3 feet, except 3 to 4 feet west of Cosgrove
Shoal Light. Nearshore waters choppy, becoming a moderate chop.
.FRIDAY NIGHT...Northeast to east winds decreasing to 10 to 15
knots. Seas 2 to 3 feet. Nearshore waters becoming a light to
moderate chop.
.SATURDAY...Northeast winds 10 to 15 knots. Seas 2 to 3 feet.
Nearshore waters a light to moderate chop.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas around 2 feet.
Nearshore waters a light to moderate chop.
.SUNDAY...East winds near 10 knots. Seas 1 to 2 feet. Nearshore
waters a light chop. Isolated showers.
.SUNDAY NIGHT...East to southeast winds near 10 knots. Seas 1 to
2 feet. Nearshore waters a light chop. Isolated showers.

$$

GMZ052>055-072>075-121545-
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-
1033 PM EST Tue Nov 11 2025

...SMALL CRAFT ADVISORY IN EFFECT...

.OVERNIGHT...Northeast winds near 20 knots. Seas 7 to 10 feet,
occasionally to 13 feet, subsiding to 5 to 8 feet, occasionally to
10 feet. Wave Detail: Northeast 9 feet at 8 seconds and west to
northwest 5 feet at 9 seconds. Isolated showers.
.WEDNESDAY...Northeast to east winds near 20 knots, decreasing to
15 to 20 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave
Detail: Northeast 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
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 4 to 5 feet,
occasionally to 6 feet.
.THURSDAY NIGHT...Northeast winds 15 to 20 knots. Seas 4 to
6 feet, occasionally to 8 feet. Isolated showers.
.FRIDAY...Northeast winds 15 to 20 knots. Seas 3 to 6 feet,
occasionally to 7 feet.
.FRIDAY NIGHT...Northeast to east winds 15 to 20 knots, decreasing
to near 15 knots. Seas 3 to 5 feet, occasionally to 6 feet.
.SATURDAY...Northeast to east winds 10 to 15 knots. Seas 2 to
4 feet, occasionally to 5 feet.
.SATURDAY NIGHT...East winds near 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet.
.SUNDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Isolated
showers.
.SUNDAY NIGHT...East to southeast winds 10 to 15 knots. Seas 2 to
3 feet. Isolated showers.

$$

GMZ033-034-121545-
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-
1033 PM EST Tue Nov 11 2025

...SMALL CRAFT ADVISORY IN EFFECT...

.OVERNIGHT...Northeast winds near 20 knots. Seas 5 to 8 feet,
occasionally to 10 feet, subsiding to 4 to 6 feet, occasionally
to 8 feet after midnight. Wave Detail: Northwest 6 feet at
9 seconds and northeast 4 feet at 5 seconds, becoming northeast
4 feet at 5 seconds and northwest 4 feet at 8 seconds.
.WEDNESDAY...Northeast winds 15 to 20 knots, decreasing to near 15
knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail:
North 4 feet at 6 seconds.
.WEDNESDAY NIGHT...Northeast to east winds near 15 knots. Seas
2 to 4 feet, occasionally to 5 feet. Wave Detail: North 3 feet at
6 seconds.
.THURSDAY...Northeast winds 15 to 20 knots. Seas 2 to 4 feet,
occasionally to 5 feet.
.THURSDAY NIGHT...Northeast to east winds 15 to 20 knots. Seas
2 to 4 feet, occasionally to 5 feet.
.FRIDAY...Northeast winds 15 to 20 knots, decreasing to 10 to 15
knots in the afternoon. Seas 2 to 4 feet, occasionally to 5 feet.
.FRIDAY NIGHT...Northeast to east winds 10 to 15 knots. Seas 2 to
3 feet.
.SATURDAY...Northeast winds 10 to 15 knots. Seas subsiding to 1
to 2 feet.
.SATURDAY NIGHT...Northeast to east winds 10 to 15 knots. Seas
1 to 2 feet.
.SUNDAY AND SUNDAY NIGHT...East winds near 10 knots. Seas 1 to 2
feet. Isolated showers.

$$