653
FZUS52 KKEY 222128
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
428 PM EST Sat Nov 22 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.

GMZ005-230930-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
428 PM EST Sat Nov 22 2025

.SYNOPSIS...Light, predominantly northeasterly breezes will
linger through the weekend. A new continental high will push in to
the eastern United States early next 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.

The Approximate Shoreward Edge of the Gulf Stream as of November 14...

54 NM South of Dry Tortugas Light...on Loggerhead Key.
23 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
19 NM South of Sand Key Light...off Key West.
17 NM South of Looe Key...off Big Pine Key.
15 NM Southeast of Sombrero Key Light...off Marathon.
 4 NM Southeast of Alligator Reef Light...off Islamorada.
 1 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.

$$

GMZ031-230930-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
428 PM EST Sat Nov 22 2025

.TONIGHT...North to northeast winds 5 to 10 knots. Bay waters
smooth to light chop.
.SUNDAY...North winds near 10 knots, becoming northeast to east 5
to 10 knots. Bay waters a light chop, becoming smooth to a light
chop.
.SUNDAY NIGHT...North to northeast winds 5 to 10 knots. Bay
waters 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. Bay waters a light to
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 10 to 15 knots, decreasing to
near 10 knots. Bay waters a light to moderate chop, becoming a
light chop. Isolated showers.
.WEDNESDAY NIGHT...East winds near 10 knots. Bay waters a light
chop. Isolated showers.
.THURSDAY...Northeast to east winds 5 to 10 knots. Bay waters
smooth to a light chop. Isolated showers.
.THURSDAY NIGHT...Northeast to east winds near 10 knots, increasing
to 10 to 15 knots. Bay waters a light chop, becoming a light to
moderate chop. Isolated showers.

$$

GMZ032-035-230930-
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-
428 PM EST Sat Nov 22 2025

.TONIGHT...North to northeast winds 5 to 10 knots. Seas around 1
foot. Nearshore waters smooth to a light chop.
.SUNDAY...North to northeast near 10 knots, becoming variable and
decreasing to 5 to 10 knots. Seas around 1 foot. Nearshore waters
a light chop, becoming smooth to a light chop.
.SUNDAY NIGHT...North winds 5 to 10 knots, becoming north to
northeast. 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. 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.
.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 subsiding to 1 to 2 feet. Nearshore waters a light to
moderate chop, becoming a light chop. Isolated showers.
.WEDNESDAY NIGHT...East winds near 10 knots. Seas subsiding to
around 1 foot. Nearshore waters a light chop. Isolated showers.
.THURSDAY...East winds 5 to 10 knots, increasing to near 10 knots.
Seas around 1 foot, building to 1 to 2 feet. Nearshore waters
smooth to a light chop, becoming a light chop. Isolated showers.
.THURSDAY NIGHT...Northeast winds 10 to 15 knots, increasing to
near 15 knots. Seas 2 to 3 feet, building to 3 to 5 feet,
occasionally to 6 feet. West of the Marquesas Keys, seas 3 to 4
feet, occasionally to 5 feet, building to 5 to 6 feet,
occasionally to 8 feet. Nearshore waters a light to moderate chop,
becoming a moderate chop. Isolated showers.

$$

GMZ042>044-230930-
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-
428 PM EST Sat Nov 22 2025

.TONIGHT...North to northeast winds 5 to 10 knots. Seas 1 to
2 feet. Nearshore waters smooth to a light chop.
.SUNDAY...North winds near 10 knots, becoming northeast 5 to 10
knots. Seas around 1 foot. Nearshore waters a light chop, becoming
smooth to a light chop.
.SUNDAY NIGHT...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. Seas 1 to 2
feet. Nearshore waters a light chop.
.MONDAY NIGHT...East winds near 15 knots. Seas building to 2 to 3
feet. Nearshore waters a moderate chop.
.TUESDAY...East winds near 15 knots. Seas 2 to 3 feet. Nearshore
waters a moderate chop. Isolated showers.
.TUESDAY NIGHT...East winds near 15 knots. Seas 2 to 3 feet.
Nearshore waters a moderate chop. Isolated showers.
.WEDNESDAY...East to southeast winds near 15 knots, decreasing to
near 10 knots. Seas 2 to 3 feet. Nearshore waters a 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...East winds 5 to 10 knots, increasing to near 10 knots.
Seas 1 to 2 feet, building to 2 to 3 feet. Nearshore waters
smooth to a light chop, becoming a light chop. Isolated showers.
.THURSDAY NIGHT...Northeast winds 10 to 15 knots, increasing to
near 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. West of
Cosgrove Shoal Light, seas 2 to 4 feet, occasionally to 5 feet,
building to 4 to 6 feet, occasionally to 8 feet. Nearshore waters
a light to moderate chop, becoming a moderate chop. Isolated
showers.

$$

GMZ052>055-072>075-230930-
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-
428 PM EST Sat Nov 22 2025

.TONIGHT...Northeast winds near 10 knots, decreasing to 5 to 10
knots. Seas 2 to 3 feet. Wave Detail: Northeast to east 2 feet at
4 seconds.
.SUNDAY...Northeast winds near 10 knots. Seas 1 to 2 feet. Wave
Detail: Northeast 2 feet at 4 seconds.
.SUNDAY NIGHT...Northeast winds 10 to 15 knots. Seas 1 to 2 feet,
building to around 2 feet. Wave Detail: Northeast 2 feet at 4
seconds.
.MONDAY...Northeast to east winds increasing to near 15 knots.
Seas 2 to 4 feet, occasionally to 5 feet.
.MONDAY NIGHT...East winds 15 to 20 knots, decreasing to near 15
knots. Seas 3 to 4 feet, occasionally 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. Seas 3 to 5 feet.
Isolated showers.
.WEDNESDAY...East to southeast winds near 15 knots, decreasing to
10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet.
Isolated showers.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.
Isolated showers.
.THURSDAY...East winds near 10 knots. Seas 2 to 3 feet. Isolated
showers.
.THURSDAY NIGHT...Northeast to east winds 10 to 15 knots,
increasing to near 15 knots. Seas building to 4 to 6 feet,
occasionally to 8 feet. Isolated showers.

$$

GMZ033-034-230930-
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-
428 PM EST Sat Nov 22 2025

.TONIGHT...North to northeast winds 5 to 10 knots. Seas 1 to
2 feet. Wave Detail: Northeast to east 1 foot at 3 seconds.
.SUNDAY...North to northeast winds 5 to 10 knots. Seas around 1
foot. Wave Detail: North to northeast 1 foot at 3 seconds.
.SUNDAY NIGHT...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 near 10 knots, decreasing to 5
to 10 knots. Seas 1 to 2 feet.
.MONDAY NIGHT...East winds increasing to 10 to 15 knots. Seas
building to 1 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 1 to 3 feet. Isolated showers.
.WEDNESDAY NIGHT...East winds near 10 knots. Seas 1 to 2 feet.
Isolated showers.
.THURSDAY...East winds near 10 knots. Seas 2 to 3 feet. Isolated
showers.
.THURSDAY NIGHT...Northeast winds 10 to 15 knots, increasing to
near 15 knots. Seas 2 to 4 feet, occasionally to 5 feet, building
to 5 to 7 feet, occasionally to 9 feet. Isolated showers.

$$

BT/11