900
FZUS52 KKEY 281517
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
1017 AM EST Fri Nov 28 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.

GMZ005-290330-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1017 AM EST Fri Nov 28 2025

.SYNOPSIS...A cold front across the area will maintain fresh to
strong north to northeasterly breezes, and Small Craft Advisories
will likely extend through Saturday night. As the front decays,
breezes will slacken over the beginning of the new week. Another
cold front may be on the horizon for the middle of the week,
reflected in the breezes turning around the clock ahead of it. Shower
activity will wax and wane throughout the marine forecast period.

The Approximate Shoreward Edge of the Gulf Stream as of November
28...

28 NM South of Dry Tortugas Light...on Loggerhead Key.
20 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
17 NM South of Sand Key Light...off Key West.
15 NM South of Looe Key...off Big Pine Key.
15 NM Southeast of Sombrero Key Light...off Marathon.
10 NM Southeast of Alligator Reef Light...off Islamorada.
 9 NM Southeast of Molasses Reef Light...off Key Largo.
 8 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.

$$

GMZ031-290330-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
1017 AM EST Fri Nov 28 2025

...SMALL CRAFT ADVISORY IN EFFECT...

.THIS AFTERNOON...North to northeast winds 20 to 25 knots. Bay
waters very rough.
.TONIGHT...Northeast winds near 20 knots. Bay waters rough.
.SATURDAY...Northeast to east winds 20 to 25 knots. Bay waters
very rough. Scattered showers.
.SATURDAY NIGHT...Northeast to east winds 20 to 25 knots,
decreasing to near 20 knots. Bay waters very rough, becoming rough.
Scattered showers.
.SUNDAY...East winds 15 to 20 knots, decreasing to near 15 knots.
Bay waters choppy, becoming a moderate chop. Scattered showers.
.SUNDAY NIGHT...Northeast to east winds 10 to 15 knots. Bay
waters a light to moderate chop. Isolated showers.
.MONDAY...East winds 10 to 15 knots. Bay waters a light to
moderate chop. Isolated showers.
.MONDAY NIGHT...East to southeast winds 10 to 15 knots. Bay
waters a light to moderate chop.
.TUESDAY...Southeast to south winds near 10 knots, becoming
southwest. Bay waters a light chop. Isolated showers.
.TUESDAY NIGHT...West to northwest winds near 10 knots. Bay
waters a light chop. Isolated showers.

$$

GMZ032-035-290330-
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-
1017 AM EST Fri Nov 28 2025

...SMALL CRAFT ADVISORY IN EFFECT...

.THIS AFTERNOON...North to northeast winds near 25 knots. Seas 4
to 6 feet, occasionally to 8 feet, except 7 to 9 feet,
occasionally to 11 feet west of the Marquesas Keys. Nearshore
waters extremely rough.
.TONIGHT...Northeast winds 20 to 25 knots. Seas 3 to 5 feet,
occasionally to 6 feet, except 6 to 7 feet, occasionally to
9 feet west of the Marquesas Keys. Nearshore waters very rough.
.SATURDAY...Northeast to east winds 20 to 25 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 very
rough. Scattered showers.
.SATURDAY NIGHT...East winds 20 to 25 knots, decreasing to near 20
knots. Seas 2 to 4 feet, occasionally to 5 feet, except 4 to 6
feet, occasionally to 8 feet west of the Marquesas Keys. Nearshore
waters very rough, becoming rough. Scattered showers.
.SUNDAY...East winds near 20 knots, decreasing to 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 rough, becoming choppy.
Scattered showers.
.SUNDAY NIGHT...Northeast to east winds near 15 knots, decreasing
to 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a moderate
chop, becoming a light to moderate chop. Isolated showers.
.MONDAY...East winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore
waters a light to moderate chop. Isolated showers.
.MONDAY NIGHT...East to southeast winds 10 to 15 knots, decreasing
to near 10 knots. Seas 1 to 2 feet, subsiding to around 1 foot.
Nearshore waters a light to moderate chop, becoming a light chop.
Isolated showers.
.TUESDAY...South winds near 10 knots, becoming southwest to west.
Seas around 1 foot. Nearshore waters a light chop. Isolated
showers.
.TUESDAY NIGHT...Northwest winds near 10 knots. Seas around 1 foot.
Nearshore waters a light chop. Isolated showers.

$$

GMZ042>044-290330-
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-
1017 AM EST Fri Nov 28 2025

...SMALL CRAFT ADVISORY IN EFFECT...

.THIS AFTERNOON...North to northeast winds near 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.
.TONIGHT...Northeast winds 20 to 25 knots. Seas 3 to 5 feet,
occasionally to 6 feet, except 5 to 7 feet, occasionally to
9 feet west of Cosgrove Shoal Light. Nearshore waters very rough.
.SATURDAY...Northeast to east winds 20 to 25 knots. Seas 4 to
6 feet, occasionally to 8 feet, except 5 to 6 feet, occasionally
to 8 feet west of Cosgrove Shoal Light. Nearshore waters very
rough. Scattered showers.
.SATURDAY NIGHT...Northeast to east winds near 25 knots, becoming
east and decreasing to 20 to 25 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Nearshore waters extremely rough, becoming
very rough. Scattered showers.
.SUNDAY...East winds near 20 knots, decreasing to 15 to 20 knots.
Seas 3 to 5 feet, occasionally to 6 feet. Nearshore waters rough,
becoming choppy. Scattered showers.
.SUNDAY NIGHT...Northeast to east winds decreasing to 10 to 15
knots. Seas subsiding to 2 to 3 feet. Nearshore waters becoming a
light to moderate chop. Isolated showers.
.MONDAY...East winds 10 to 15 knots. Seas around 2 feet.
Nearshore waters a light to moderate chop. Isolated showers.
.MONDAY NIGHT...East to southeast winds 10 to 15 knots, becoming
southeast. Seas around 2 feet. Nearshore waters a light to moderate
chop. Isolated showers.
.TUESDAY...South winds 10 to 15 knots, becoming southwest to west.
Seas 1 to 2 feet. Nearshore waters a light to moderate chop,
becoming a light chop. Isolated showers.
.TUESDAY NIGHT...Northwest winds near 10 knots. Seas around
1 foot. Nearshore waters a light chop. Isolated showers.

$$

GMZ052>055-072>075-290330-
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-
1017 AM EST Fri Nov 28 2025

...SMALL CRAFT ADVISORY IN EFFECT...

.THIS AFTERNOON...North to northeast winds near 25 knots. Seas 6
to 9 feet, occasionally to 11 feet. Wave Detail: Northeast 9 feet
at 7 seconds and northwest 5 feet at 8 seconds. Isolated showers.
.TONIGHT...Northeast winds 20 to 25 knots. Seas 8 to 10 feet,
occasionally to 13 feet. Wave Detail: Northeast 9 feet at
8 seconds and west to northwest 4 feet at 9 seconds. Scattered
showers.
.SATURDAY...Northeast to east winds near 25 knots. Seas 8 to
10 feet, occasionally to 13 feet. Wave Detail: Northeast to east
9 feet at 8 seconds and west to northwest 3 feet at 8 seconds.
Scattered showers.
.SATURDAY NIGHT...East winds near 25 knots, decreasing to 20 to
25 knots. Seas 8 to 10 feet, occasionally to 13 feet, subsiding to
6 to 9 feet, occasionally to 11 feet. Numerous showers.
.SUNDAY...East winds near 20 knots, decreasing to 15 to 20 knots.
Seas 5 to 7 feet, occasionally to 9 feet. Scattered showers.
.SUNDAY NIGHT...East winds near 15 knots, decreasing to 10 to 15
knots. Seas 3 to 4 feet, occasionally to 5 feet, subsiding to 2 to
3 feet. Isolated showers.
.MONDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Isolated
showers.
.MONDAY NIGHT...East to southeast winds 10 to 15 knots, becoming
south. Seas 2 to 3 feet. Isolated showers.
.TUESDAY...South winds 10 to 15 knots, becoming southwest to west.
Seas 2 to 3 feet. Isolated showers.
.TUESDAY NIGHT...Northwest winds near 10 knots. Seas 1 to 2 feet.
Isolated showers.

$$

GMZ033-034-290330-
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-
1017 AM EST Fri Nov 28 2025

...SMALL CRAFT ADVISORY IN EFFECT...

.THIS AFTERNOON...North to northeast winds near 25 knots,
decreasing to 20 to 25 knots. Seas 6 to 9 feet, occasionally to 11
feet. Wave Detail:
North 7 feet at 7 seconds.
.TONIGHT...Northeast winds 20 to 25 knots. Seas 5 to 8 feet,
occasionally to 10 feet. Wave Detail: North 6 feet at 7 seconds.
.SATURDAY...Northeast to east winds 20 to 25 knots. Seas 5 to
7 feet, occasionally to 9 feet. Wave Detail: North to northeast
6 feet at 7 seconds. Isolated showers.
.SATURDAY NIGHT...East winds 20 to 25 knots, decreasing to near 20
knots. Seas 5 to 7 feet, occasionally to 9 feet. Isolated
showers.
.SUNDAY...East winds 15 to 20 knots, decreasing to near 15 knots.
Seas 3 to 5 feet, occasionally to 6 feet. Isolated showers.
.SUNDAY NIGHT...Northeast to east winds 10 to 15 knots. Seas 2 to
3 feet. Isolated showers.
.MONDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Isolated
showers.
.MONDAY NIGHT...East to southeast winds 10 to 15 knots, decreasing
to near 10 knots. Seas 1 to 2 feet. Isolated showers.
.TUESDAY...South winds near 10 knots, becoming southwest to west.
Seas 1 to 2 feet. Isolated showers.
.TUESDAY NIGHT...West to northwest winds near 10 knots, becoming
northwest to north. Seas 1 to 2 feet. Isolated showers.

$$