114
FZUS52 KKEY 010327
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
1027 PM EST Sun Nov 30 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.

GMZ005-011530-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1027 PM EST Sun Nov 30 2025

.SYNOPSIS...High pressure across the New England region will
progress further east through Monday and breezes will continue to
slacken as well as shift to the east. Another high will take the
place of this previous high for Monday night and early Tuesday
keeping breezes gentle to moderate. A developing storm system on
the heels of this high Tuesday will result in a weakening of the
pressure gradient across the Keys through early Wednesday. Its
corresponding cold front may try and push through the Keys mid to
late week resulting in freshening north to northeast breezes.

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.

$$

GMZ031-011530-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
1027 PM EST Sun Nov 30 2025

.OVERNIGHT...Northeast to east winds near 10 knots, increasing to
10 to 15 knots late. Bay waters a light chop, becoming a light to
moderate chop. Isolated showers.
.MONDAY...East winds 10 to 15 knots. Bay waters a light to
moderate chop.
.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.
.TUESDAY NIGHT...Southwest to west winds 5 to 10 knots, becoming
northwest. Bay waters smooth to a light chop.
.WEDNESDAY...Northwest to north winds decreasing to near 5 knots.
Bay waters becoming smooth.
.WEDNESDAY NIGHT...North to northeast winds increasing to 5 to 10
knots. Bay waters becoming smooth to a light chop.
.THURSDAY...Northeast winds near 10 knots. Bay waters a light
chop.
.THURSDAY NIGHT...Northeast to east winds 10 to 15 knots. Bay
waters a light to moderate chop.
.FRIDAY...East to southeast winds 10 to 15 knots. Bay waters a
light to moderate chop.
.FRIDAY NIGHT...East to southeast winds near 10 knots. Bay waters
a light chop.

$$

GMZ032-035-011530-
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-
1027 PM EST Sun Nov 30 2025

.OVERNIGHT...Northeast to east winds near 10 knots, increasing to
10 to 15 knots. Seas 1 to 2 feet, except 2 to 3 feet west of the
Marquesas Keys. Nearshore waters a light chop, becoming a light to
moderate chop. Isolated showers.
.MONDAY...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.
.MONDAY NIGHT...East to southeast winds 10 to 15 knots. Seas
1 to 2 feet. Nearshore waters a light to moderate chop.
.TUESDAY...Southeast to south winds 10 to 15 knots, becoming
southwest near 10 knots. Seas 1 to 2 feet, subsiding to around 1
foot. Nearshore waters a light to moderate chop, becoming a light
chop.
.TUESDAY NIGHT...West to northwest winds 5 to 10 knots. Seas
1 foot or less. Nearshore waters smooth to a light chop.
.WEDNESDAY...North winds 5 to 10 knots. Seas 1 foot or less,
except building to 1 to 2 feet west of the Marquesas Keys.
Nearshore waters smooth to a light chop.
.WEDNESDAY NIGHT...North to northeast winds increasing to near 10
knots. Seas 1 to 2 feet, except 2 to 3 feet west of the Marquesas
Keys. Nearshore waters becoming a light chop.
.THURSDAY...Northeast winds near 10 knots. Seas 1 to 2 feet.
Nearshore waters a light chop.
.THURSDAY NIGHT...Northeast to east winds 10 to 15 knots. Seas
1 to 2 feet. Nearshore waters a light to moderate chop.
.FRIDAY...East to southeast winds 10 to 15 knots. Seas 1 to 2 feet.
Nearshore waters a light to moderate chop.
.FRIDAY NIGHT...East to southeast winds 10 to 15 knots. Seas 1 to
2 feet. Nearshore waters a light to moderate chop.

$$

GMZ042>044-011530-
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-
1027 PM EST Sun Nov 30 2025

.OVERNIGHT...Northeast to east winds 10 to 15 knots. Seas 2 to 3
feet. Nearshore waters a light to moderate chop. Isolated
showers.
.MONDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Nearshore
waters a light to moderate chop. Isolated showers.
.MONDAY NIGHT...East to southeast winds 10 to 15 knots. Seas 2 to
3 feet. Nearshore waters a light to moderate chop. Isolated
showers.
.TUESDAY...Southeast to south winds 10 to 15 knots, becoming
southwest near 10 knots. Seas 2 to 3 feet, subsiding to around 2
feet. Nearshore waters a light to moderate chop, becoming a light
chop.
.TUESDAY NIGHT...Northwest winds 5 to 10 knots. Seas subsiding to
around 1 foot. Nearshore waters smooth to a light chop.
.WEDNESDAY...North winds 5 to 10 knots. Seas around 1 foot, except
building to 1 to 2 feet west of the Cosgrove Shoal. Nearshore
waters smooth to a light chop.
.WEDNESDAY NIGHT...North to northeast winds 5 to 10 knots,
increasing to near 10 knots. Seas around 1 foot, except 2 to 3
feet west of Cosgrove Shoal Light. Nearshore waters smooth to a
light chop, becoming a light chop.
.THURSDAY...Northeast winds near 10 knots. Seas 1 to 2 feet.
Nearshore waters a light chop.
.THURSDAY NIGHT...Northeast to east winds 10 to 15 knots. Seas
building to around 2 feet. Nearshore waters a light to moderate
chop.
.FRIDAY...East to southeast winds 10 to 15 knots. Seas 2 to 3
feet. Nearshore waters a light to moderate chop.
.FRIDAY NIGHT...East to southeast winds 10 to 15 knots. Seas
around 2 feet. Nearshore waters a light to moderate chop.

$$

GMZ052>055-072>075-011530-
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-
1027 PM EST Sun Nov 30 2025

.OVERNIGHT...Northeast to east winds near 15 knots. Seas 3 to 5
feet, occasionally to 6 feet. Wave Detail: Northeast to east 5
feet at 7 seconds. Scattered showers.
.MONDAY...East winds near 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: East 4 feet at 6 seconds.
Isolated showers.
.MONDAY NIGHT...East to southeast winds near 15 knots. Seas 3 to
4 feet, occasionally to 5 feet, subsiding to 2 to 3 feet. Wave
Detail: East 4 feet at 5 seconds. Isolated showers.
.TUESDAY...Southeast to south winds 10 to 15 knots, becoming
southwest near 10 knots. Seas 2 to 3 feet, subsiding to around 2
feet.
.TUESDAY NIGHT...West to northwest winds near 10 knots, becoming
northwest to north 5 to 10 knots. Seas subsiding to 1 to 2 feet.
Isolated showers.
.WEDNESDAY...North to northeast winds 5 to 10 knots. Seas 1 to
2 feet.
.WEDNESDAY NIGHT...Northeast winds near 10 knots. Seas 1 to 2
feet, except building to 2 to 3 feet west of Halfmoon Shoal Light.
.THURSDAY...Northeast to east winds increasing to 10 to 15 knots.
Seas 2 to 3 feet.
.THURSDAY NIGHT...Northeast to east winds increasing to near 15
knots. Seas 2 to 4 feet, occasionally to 5 feet.
.FRIDAY...East to southeast winds decreasing to 10 to 15 knots.
Seas 3 to 4 feet, occasionally to 5 feet.
.FRIDAY NIGHT...East to southeast winds 10 to 15 knots. Seas
subsiding to 2 to 3 feet.

$$

GMZ033-034-011530-
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-
1027 PM EST Sun Nov 30 2025

.OVERNIGHT...Northeast to east winds 10 to 15 knots. Seas 2 to
3 feet. Wave Detail: Northeast to east 3 feet at 4 seconds.
Isolated showers.
.MONDAY...East winds 10 to 15 knots, briefly decreasing to near 10
knots in the afternoon. Seas 2 to 3 feet. Wave Detail: East 3
feet at 4 seconds. Isolated showers.
.MONDAY NIGHT...East to southeast winds 10 to 15 knots. Seas 2 to
3 feet, subsiding to 1 to 2 feet. Wave Detail: East to southeast
2 feet at 3 seconds. Isolated showers.
.TUESDAY...Southeast to south winds 10 to 15 knots, becoming
southwest to west near 10 knots. Seas 1 to 2 feet. Isolated
showers.
.TUESDAY NIGHT...West to northwest winds near 10 knots, becoming
northwest to north 5 to 10 knots. Seas 1 to 2 feet.
.WEDNESDAY...North to northeast winds 5 to 10 knots. Seas 1 to
2 feet, building to around 2 feet.
.WEDNESDAY NIGHT...North to northeast winds near 10 knots. Seas
2 to 3 feet.
.THURSDAY...Northeast to east winds decreasing to 5 to 10 knots.
Seas around 2 feet, subsiding to 1 to 2 feet.
.THURSDAY NIGHT...Northeast to east winds 5 to 10 knots, becoming
east 10 to 15 knots. Seas building to around 2 feet.
.FRIDAY...East to southeast winds 10 to 15 knots. Seas subsiding
to 1 to 2 feet.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots. Seas 1 to 2 feet.

$$