996
FZUS52 KKEY 091522
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
1022 AM EST Sun Nov 9 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.

GMZ005-100330-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1022 AM EST Sun Nov 9 2025

.SYNOPSIS...High pressure will continue to slide eastward across
the central North Atlantic today. This will result in mainly
light southeast breezes, potentially becoming variable at times.
A potent cold front will push through the Florida Keys marine
zones on Monday, bringing fresh to strong northerly winds by
Monday afternoon. While the next high builds in behind the front,
winds will shift out of the northeast and gradually slacken.
Moderate to occasionally fresh breezes will remain possible.

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.

$$

GMZ031-100330-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
1022 AM EST Sun Nov 9 2025

.THIS AFTERNOON...Southeast to south winds near 5 knots, becoming
variable. Bay waters smooth. Isolated showers.
.TONIGHT...West winds near 5 knots, increasing to 5 to 10 knots.
Bay waters smooth, becoming smooth to a light chop. Isolated
showers.
.MONDAY...West to northwest winds near 10 knots, becoming
northwest and increasing to 20 to 25 knots. Bay waters a light
chop, becoming very rough. Isolated showers.
.MONDAY NIGHT...Northwest to north winds near 25 knots. Bay
waters extremely rough.
.TUESDAY...North winds 20 to 25 knots, becoming north to
northeast near 20 knots. Bay waters very rough, becoming rough.
.TUESDAY NIGHT...North to northeast winds decreasing to 15 to 20
knots. Bay waters becoming choppy.
.WEDNESDAY...Northeast to east 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...Northeast winds 10 to 15 knots. Bay waters a
light to moderate chop.

$$

GMZ032-035-100330-
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-
1022 AM EST Sun Nov 9 2025

.THIS AFTERNOON...Southeast to south winds near 5 knots, becoming
variable. Seas 1 foot or less. Nearshore waters smooth. Isolated
showers.
.TONIGHT...West to northwest 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. Isolated showers.
.MONDAY...Northwest winds 10 to 15 knots, becoming northwest to
north and increasing to 25 to 30 knots. Seas around 1 foot,
building to 3 to 5 feet, occasionally to 6 feet. West of the
Marquesas Keys, seas 1 to 2 feet, building to 5 to 7 feet,
occasionally to 9 feet. Nearshore waters a light to moderate chop,
becoming extremely rough. Isolated showers.
.MONDAY NIGHT...Northwest to north winds 25 to 30 knots. Seas
4 to 6 feet, occasionally to 8 feet, except 8 to 10 feet,
occasionally to 13 feet west of the Marquesas Keys. Nearshore
waters extremely rough.
.TUESDAY...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.
.TUESDAY NIGHT...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. 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.
.WEDNESDAY NIGHT...Northeast winds near 15 knots. Seas 2 to 3
feet, except around 3 feet west of the Marquesas Keys. Nearshore
waters a moderate chop.
.THURSDAY AND THURSDAY NIGHT...Northeast winds near 15 knots.
Seas 2 to 3 feet. Nearshore waters a moderate chop.

$$

GMZ042>044-100330-
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-
1022 AM EST Sun Nov 9 2025

.THIS AFTERNOON...Southeast to south winds near 5 knots, becoming
variable. Seas around 1 foot. Nearshore waters smooth. Isolated
showers.
.TONIGHT...West to northwest winds 5 to 10 knots. Seas around 1
foot. Nearshore waters smooth to a light chop. Isolated showers.
.MONDAY...Northwest winds 10 to 15 knots, becoming northwest to
north and increasing to 25 to 30 knots. Seas 1 to 2 feet. West of
Cosgrove Shoal Light, seas 1 to 2 feet, building to 5 to 7 feet,
occasionally to 9 feet in the afternoon. Nearshore waters a light
to moderate chop, becoming extremely rough. Isolated showers.
.MONDAY NIGHT...Northwest to north winds 25 to 30 knots. Seas
2 to 3 feet, except 6 to 9 feet, occasionally to 11 feet west of
Cosgrove Shoal Light. Nearshore waters extremely rough.
.TUESDAY...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.
.TUESDAY NIGHT...Northeast winds near 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 rough.
.WEDNESDAY...Northeast to east 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 THROUGH THURSDAY NIGHT...Northeast winds 15 to
20 knots. Seas 2 to 3 feet. Nearshore waters choppy.

$$

GMZ052>055-072>075-100330-
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-
1022 AM EST Sun Nov 9 2025

.THIS AFTERNOON...Southeast to south winds 5 to 10 knots,
becoming variable. Seas 1 to 2 feet. Wave Detail: East to
southeast 1 foot at 3 seconds. Isolated showers.
.TONIGHT...Northwest winds 5 to 10 knots, increasing to near 10
knots. Seas 1 to 2 feet. Wave Detail: East 1 foot at 3 seconds.
Scattered showers.
.MONDAY...Northwest winds 10 to 15 knots, becoming northwest to
north and increasing to near 25 knots. Seas 1 to 2 feet, building
to 4 to 6 feet, occasionally to 8 feet in the afternoon. Wave
Detail: North 2 feet at 3 seconds, becoming northwest 6 feet at 5
seconds. Scattered showers.
.MONDAY NIGHT...Northwest to north winds 25 to 30 knots. Seas 5
to 8 feet, occasionally to 10 feet, building to 7 to 10 feet,
occasionally to 13 feet after midnight.
.TUESDAY...North to northeast winds 25 to 30 knots, decreasing to
near 25 knots. Seas 8 to 11 feet, occasionally to 14 feet.
.TUESDAY NIGHT...Northeast winds 20 to 25 knots, decreasing to
near 20 knots. Seas 6 to 9 feet, occasionally to 11 feet.
.WEDNESDAY...Northeast to east winds 15 to 20 knots. Seas 5 to
7 feet, occasionally to 9 feet. Isolated showers.
.WEDNESDAY NIGHT...Northeast to east winds 15 to 20 knots. Seas
4 to 6 feet, occasionally to 8 feet. Isolated showers.
.THURSDAY AND THURSDAY NIGHT...Northeast winds 15 to 20 knots.
Seas 3 to 5 feet, occasionally to 6 feet. Isolated showers.

$$

GMZ033-034-100330-
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-
1022 AM EST Sun Nov 9 2025

.THIS AFTERNOON...Southeast to south winds near 5 knots, becoming
variable. Seas 1 foot or less. Isolated showers.
.TONIGHT...West to northwest winds 5 to 10 knots, increasing to
10 to 15 knots. Seas 1 foot or less, building to 1 to 2 feet.
Wave Detail: West to northwest 1 foot at 2 seconds. Scattered
showers.
.MONDAY...Northwest winds near 15 knots, becoming northwest to
north and increasing to 25 to 30 knots. Seas 2 to 3 feet,
building to 6 to 9 feet, occasionally to 11 feet in the afternoon.
Wave Detail: Northwest 3 feet at 5 seconds, becoming northwest to
north 9 feet at 7 seconds. Isolated showers.
.MONDAY NIGHT...North winds 25 to 30 knots. Seas 8 to 10 feet,
occasionally to 13 feet.
.TUESDAY...North to northeast winds 25 to 30 knots, becoming
northeast and decreasing to 20 to 25 knots. Seas 7 to 10 feet,
occasionally to 13 feet.
.TUESDAY NIGHT...Northeast winds near 20 knots, decreasing to 15
to 20 knots. Seas 5 to 7 feet, occasionally to 9 feet.
.WEDNESDAY...Northeast winds 15 to 20 knots, decreasing to near 15
knots. Seas 3 to 5 feet, occasionally to 6 feet.
.WEDNESDAY NIGHT...Northeast to east winds near 15 knots. Seas 2
to 3 feet.
.THURSDAY AND THURSDAY NIGHT...Northeast winds near 15 knots.
Seas 2 to 3 feet.

$$