574
FZUS52 KKEY 231531
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
1031 AM EST Sun Nov 23 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.

GMZ005-240345-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1031 AM EST Sun Nov 23 2025

.SYNOPSIS...Light, predominantly northeasterly breezes will
linger this afternoon into tomorrow due to weak ridging across
Florida. A continental high will push in to the eastern United
States early this week, resulting in freshening northeast to
easterly breezes. This high will progress eastward into the
Atlantic, and after mid week, breezes should collapse as the
pressure field becomes nebulous. Probability is increasing that a
cold front will push southward through Keys waters very late in
the forecast, resulting in what appears to be the start of a
prolonged period of fresh northeast to easterly breezes.

The Approximate Shoreward Edge of the Gulf Stream as of November
22...

35 NM South of Dry Tortugas Light...on Loggerhead Key.
12 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
 6 NM South of Sand Key Light...off Key West.
 7 NM South of Looe Key...off Big Pine Key.
 8 NM Southeast of Sombrero Key Light...off Marathon.
 9 NM Southeast of Alligator Reef Light...off Islamorada.
 3 NM Southeast of Molasses Reef Light...off Key Largo.
 1 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.

$$

GMZ031-240345-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
1031 AM EST Sun Nov 23 2025

.THIS AFTERNOON...North winds near 10 knots, becoming east 5 to
10 knots. Bay waters a light chop, becoming smooth to a light
chop.
.TONIGHT...Variable winds 5 to 10 knots, becoming north. Bay
waters smooth, becoming smooth to a light chop.
.MONDAY...Northeast to east winds near 10 knots. Bay waters
a light chop.
.MONDAY NIGHT...East winds 10 to 15 knots, increasing to near 15
knots. Bay waters a light to moderate chop, becoming a moderate
chop.
.TUESDAY...East winds 10 to 15 knots. Bay waters a light to
moderate chop. Isolated showers.
.TUESDAY NIGHT...East winds 10 to 15 knots. Bay waters a light to
moderate chop. Isolated showers.
.WEDNESDAY...East to southeast winds near 10 knots. Bay waters a
light chop. Isolated showers.
.WEDNESDAY NIGHT...East winds near 10 knots. Bay waters a light
chop. Isolated showers.
.THURSDAY...Northeast winds 5 to 10 knots. Bay waters smooth to a
light chop. Isolated showers.
.THURSDAY NIGHT...Northeast winds near 10 knots, increasing to
near 15 knots. Bay waters a light chop, becoming a moderate chop.
Isolated showers.

$$

GMZ032-035-240345-
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-
1031 AM EST Sun Nov 23 2025

.THIS AFTERNOON...North to northeast winds near 10 knots,
becoming variable 5 to 10 knots. Seas around 1 foot, subsiding to
1 foot or less. Nearshore waters a light chop, becoming smooth to
a light chop.
.TONIGHT...North to northeast winds 5 to 10 knots. Seas 1 foot or
less. Nearshore waters smooth to a light chop.
.MONDAY...Northeast to east winds near 10 knots. Seas around 1
foot. Nearshore waters a light chop.
.MONDAY NIGHT...East winds 10 to 15 knots, increasing to near 15
knots. Seas building to 1 to 2 feet, except building to 2 to 3
feet west of the Marquesas Keys. Nearshore waters a light to
moderate chop, becoming a moderate chop.
.TUESDAY...East winds 10 to 15 knots. Seas 1 to 2 feet, except
2 to 3 feet west of the Marquesas Keys. Nearshore waters a light
to moderate chop. Isolated showers.
.TUESDAY NIGHT...East winds 10 to 15 knots. Seas 1 to 2 feet,
except 2 to 3 feet west of the Marquesas Keys. Nearshore waters a
light to moderate chop. Isolated showers.
.WEDNESDAY...East winds 10 to 15 knots, decreasing to near 10
knots. Seas 1 to 2 feet. Nearshore waters a light to moderate
chop, becoming a light chop. Isolated showers.
.WEDNESDAY NIGHT...Northeast to east winds near 10 knots. Seas
around 1 foot. Nearshore waters a light chop. Isolated showers.
.THURSDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less.
Nearshore waters smooth to a light chop. Isolated showers.
.THURSDAY NIGHT...North to northeast winds 10 to 15 knots,
increasing to near 15 knots. Seas 1 foot, building to 1 to 2 feet,
except building to 2 to 3 feet west of the Marquesas Keys.
Nearshore waters a light to moderate chop, becoming a moderate
chop. Isolated showers.

$$

GMZ042>044-240345-
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-
1031 AM EST Sun Nov 23 2025

.THIS AFTERNOON...North to northeast winds 10 to 15 knots,
decreasing to 5 to 10 knots. Seas 1 to 2 feet, subsiding to around
1 foot. Nearshore waters a light to moderate chop, becoming
smooth to a light chop.
.TONIGHT...North to northeast winds 5 to 10 knots. Seas around 1
foot. Nearshore waters smooth to a light chop.
.MONDAY...Northeast to east winds near 10 knots, increasing to 10
to 15 knots. Seas building to 1 to 2 feet. Nearshore waters a
light chop, becoming a light to moderate chop.
.MONDAY NIGHT...East winds increasing to near 15 knots. Seas
building to 2 to 3 feet. Nearshore waters becoming a moderate
chop.
.TUESDAY...East winds near 15 knots, decreasing to 10 to 15
knots. Seas 2 to 3 feet. Nearshore waters a moderate chop,
becoming a light to moderate chop. Isolated showers.
.TUESDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.
Nearshore waters a light to moderate chop. Isolated showers.
.WEDNESDAY...East winds 10 to 15 knots, decreasing to near 10
knots. Seas 2 to 3 feet, subsiding to around 2 feet. Nearshore
waters a light to moderate chop, becoming a light chop. Isolated
showers.
.WEDNESDAY NIGHT...East winds near 10 knots. Seas 1 to 2 feet.
Nearshore waters a light chop. Isolated showers.
.THURSDAY...Northeast to east winds 5 to 10 knots, increasing to
near 10 knots. Seas 1 to 2 feet. Nearshore waters smooth to a
light chop, becoming a light chop. Isolated showers.
.THURSDAY NIGHT...North to northeast winds 10 to 15 knots,
increasing to near 15 knots. Seas 1 to 2 feet, except building to 2
to 3 feet west of Cosgrove Shoal Light. Nearshore waters a light
to moderate chop, becoming a moderate chop. Isolated showers.

$$

GMZ052>055-072>075-240345-
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-
1031 AM EST Sun Nov 23 2025

.THIS AFTERNOON...North to northeast winds 10 to 15 knots,
becoming northeast 5 to 10 knots. Seas around 2 feet, subsiding to 1
to 2 feet. Wave Detail: Northeast 2 feet at 4 seconds.
.TONIGHT...Northeast winds increasing to 10 to 15 knots. Seas 1
to 2 feet. Wave Detail: Northeast to east 2 feet at 4 seconds.
.MONDAY...Northeast to east winds 10 to 15 knots. Seas 2 to
3 feet. Wave Detail: Northeast to east 3 feet at 4 seconds.
.MONDAY NIGHT...East winds 15 to 20 knots. Seas building to 3 to
5 feet.
.TUESDAY...East winds near 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Isolated showers.
.TUESDAY NIGHT...East winds 15 to 20 knots, decreasing to near 15
knots. Seas 3 to 4 feet, occasionally to 5 feet. Isolated
showers.
.WEDNESDAY...East to southeast winds 10 to 15 knots. Seas
subsiding to 2 to 3 feet. Isolated showers.
.WEDNESDAY NIGHT...Northeast to east winds 10 to 15 knots,
decreasing to near 10 knots. Seas 2 to 3 feet. Scattered showers.
.THURSDAY...Northeast to east winds near 10 knots. Seas around
2 feet. Isolated showers.
.THURSDAY NIGHT...Northeast winds 10 to 15 knots, increasing to
15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet,
building to 4 to 6 feet west of Rebecca Shoal Light. Scattered
showers.

$$

GMZ033-034-240345-
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-
1031 AM EST Sun Nov 23 2025

.THIS AFTERNOON...Northeast winds near 10 knots, becoming north 5
to 10 knots. Seas around 1 foot. Wave Detail: Northeast 1 foot at
2 seconds.
.TONIGHT...North to northeast winds 5 to 10 knots. Seas around 1
foot. Wave Detail: North to northeast 1 foot at 3 seconds.
.MONDAY...Northeast to east winds 5 to 10 knots. Seas 1 to
2 feet. Wave Detail: Northeast 1 foot at 3 seconds.
.MONDAY NIGHT...East winds increasing to near 15 knots. Seas
building to 2 to 3 feet.
.TUESDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Isolated
showers.
.TUESDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.
Isolated showers.
.WEDNESDAY...East winds 10 to 15 knots, decreasing to near 10
knots. Seas subsiding to 1 to 2 feet. Isolated showers.
.WEDNESDAY NIGHT...Northeast to east winds near 10 knots. Seas
1 to 2 feet. Isolated showers.
.THURSDAY...North to northeast winds near 10 knots. Seas 1 to
2 feet. Isolated showers.
.THURSDAY NIGHT...North to northeast winds 10 to 15 knots,
increasing to 15 to 20 knots. Seas 2 to 3 feet, building to 3 to
5 feet, occasionally to 6 feet. Isolated showers.

$$

BT/11