929
FZUS52 KKEY 080935 CCA
CWFKEY

Coastal Waters Forecast for the Florida Keys...CORRECTED
National Weather Service Key West FL
435 AM EST Mon Dec 8 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.

Corrected a typo in the Florida Straits section

GMZ005-082130-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
435 AM EST Mon Dec 8 2025

.SYNOPSIS...Gentle to moderate breezes will freshen to moderate
and veer northeasterly tonight as a fractured front moves across
the Florida Keys. Heaviest showers and thunderstorms are expected
for the northern waters today and tonight, but the front may stall
across the Straits of Florida. Expect greater shower coverage in
the southern waters. Breezes will fluctuate between gentle and
moderate during the week.

The Approximate Shoreward Edge of the Gulf Stream as of December 4...

21 NM South of Dry Tortugas Light...on Loggerhead Key.
21 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
22 NM South of Sand Key Light...off Key West.
15 NM South of Looe Key...off Big Pine Key.
 8 NM Southeast of Sombrero Key Light...off Marathon.
 6 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.

$$

GMZ031-082130-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
435 AM EST Mon Dec 8 2025

.TODAY...Southwest to west winds near 10 knots, becoming west
and increasing to 10 to 15 knots. Bay waters a light chop,
becoming a light to moderate chop. Scattered showers and isolated
thunderstorms.
.TONIGHT...West to northwest winds 10 to 15 knots, becoming
northwest to north and increasing to near 15 knots. Bay waters a
light to moderate chop, becoming a moderate chop. Scattered
showers.
.TUESDAY...North to northeast winds near 15 knots. Bay waters a
moderate chop. Scattered showers.
.TUESDAY NIGHT...Northeast winds 10 to 15 knots. Bay waters a
light to moderate chop. Scattered showers.
.WEDNESDAY...Northeast to east winds near 10 knots, decreasing to 5
to 10 knots. Bay waters a light chop, becoming smooth to a light
chop. Isolated showers.
.WEDNESDAY NIGHT...North to northeast winds 5 to 10 knots. Bay
waters smooth to a light chop. Isolated showers.
.THURSDAY...North winds near 10 knots, becoming north to
northeast and decreasing to 5 to 10 knots. Bay waters smooth to a
light chop. Isolated showers.
.THURSDAY NIGHT...Northeast winds 5 to 10 knots. Bay waters
smooth to a light chop. Isolated showers.
.FRIDAY AND FRIDAY NIGHT...Northeast to east winds near 10 knots.
Bay waters a light chop. Isolated showers.

$$

GMZ032-035-082130-
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-
435 AM EST Mon Dec 8 2025

.TODAY...Southwest to west winds 10 to 15 knots, becoming west to
northwest. Seas 1 to 2 feet, except around 2 feet west of the
Marquesas Keys. Nearshore waters a light to moderate chop.
Scattered showers and isolated thunderstorms.
.TONIGHT...Northwest to north winds 10 to 15 knots, becoming north
to northeast near 15 knots. Seas 1 to 2 feet, except 2 to 3 feet
west of the Marquesas Keys. Nearshore waters a light to moderate
chop, becoming moderate after midnight. Scattered showers.
.TUESDAY...North to northeast winds 15 to 20 knots, decreasing to
near 15 knots. Seas 2 to 3 feet, except 3 to 4 feet, occasionally to 5
feet west of the Marquesas Keys. Nearshore waters choppy, becoming
a moderate chop. Scattered showers.
.TUESDAY NIGHT...Northeast winds 10 to 15 knots. Seas 2 to 3
feet, except 2 to 4 feet, occasionally to 5 feet west of the
Marquesas Keys. Nearshore waters a light to moderate chop.
Scattered showers.
.WEDNESDAY...North to northeast winds near 10 knots, decreasing
to 5 to 10 knots. Seas 1 to 2 feet, except 2 to 3 feet
west of the Marquesas Keys. Nearshore waters a light chop,
becoming smooth to a light chop. Isolated showers.
.WEDNESDAY NIGHT...North winds 5 to 10 knots. Seas 1 to 2 feet.
Nearshore waters smooth to a light chop. Isolated showers.
.THURSDAY...North to northeast winds near 10 knots. Seas 1 to 2
feet, subsiding to around 1 foot. Nearshore waters a light chop.
Isolated showers.
.THURSDAY NIGHT AND FRIDAY...Northeast winds near 10 knots. Seas
around 1 foot. Nearshore waters a light chop. Isolated showers.
.FRIDAY NIGHT...Northeast to east winds near 10 knots. Seas
1 to 2 feet. Nearshore waters a light chop. Isolated showers.

$$

GMZ042>044-082130-
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-
435 AM EST Mon Dec 8 2025

.TODAY...Southwest to west winds 10 to 15 knots, becoming
west to northwest. Seas 1 to 2 feet, except around 2 feet west of
Cosgrove Shoal. Nearshore waters a light to moderate chop.
Scattered showers and isolated thunderstorms.
.TONIGHT...Northwest to north winds 10 to 15 knots, becoming to
north to northeast near 15 knots. Seas 1 to 2 feet, except
building to 2 to 3 feet west of Cosgrove Shoal. Nearshore waters a
light to moderate chop, becoming a moderate chop. Scattered
showers.
.TUESDAY...North to northeast winds 15 to 20 knots, decreasing to
near 15 knots. Seas 2 to 3 feet, except 2 to 4 feet, occasionally
to 5 feet west of Cosgrove Shoal Light. Nearshore waters choppy,
becoming a moderate chop. Scattered showers.
.TUESDAY NIGHT...Northeast to east winds near 15 knots, decreasing
to 10 to 15 knots. Seas 2 to 3 feet, except 2 to 4 feet,
occasionally to 5 feet west of Cosgrove Shoal Light. Nearshore
waters a moderate chop, becoming a light to moderate chop.
Scattered showers.
.WEDNESDAY...Northeast winds near 10 knots, decreasing to 5 to 10
knots. Seas 1 to 2 feet, except 2 to 3 feet west of Cosgrove Shoal
Light. Nearshore waters a light chop, becoming smooth to a light
chop. Scattered showers.
.WEDNESDAY NIGHT...North to northeast 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...North to northeast winds near 10 knots. Seas 1 to 2
feet. Nearshore waters a light chop. Isolated showers.
.THURSDAY NIGHT...Northeast winds 5 to 10 knots. Seas around 1
foot. Nearshore waters smooth to a light chop. Isolated showers.
.FRIDAY AND FRIDAY NIGHT...Northeast to east winds near 10 knots.
Seas 1 to 2 feet. Nearshore waters a light chop. Isolated
showers.

$$

GMZ052>055-072>075-082130-
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-
435 AM EST Mon Dec 8 2025

.TODAY...Southwest to west winds 10 to 15 knots, becoming west to
northwest. Seas 1 to 2 feet, building to 2 to 3 feet. Wave
Detail: Southwest to west 2 feet at 3 seconds. Scattered showers
and isolated thunderstorms.
.TONIGHT...Northwest to north winds 10 to 15 knots, becoming
north to northeast near 15 knots. Seas 2 to 3 feet. Wave Detail:
Northwest to north 2 feet at 4 seconds. Numerous showers and
isolated thunderstorms.
.TUESDAY...North to northeast winds 15 to 20 knots. Seas building
to 3 to 5 feet, occasionally to 6 feet. Wave Detail: North to
northeast 3 feet at 5 seconds. Numerous showers and isolated
thunderstorms.
.TUESDAY NIGHT...Northeast to east winds near 15 knots, decreasing
to 10 to 15 knots. Seas 3 to 5 feet, occasionally to 6 feet.
Scattered showers with a slight chance of thunderstorms.
.WEDNESDAY...Northeast to east winds near 10 knots, decreasing to 5
to 10 knots. Seas 2 to 4 feet, occasionally to 5 feet, subsiding to 2
to 3 feet. Scattered showers and isolated thunderstorms.
.WEDNESDAY NIGHT...North to northeast winds near 10 knots. Seas
subsiding to around 2 feet. Scattered showers.
.THURSDAY...North to northeast winds 10 to 15 knots. Seas around
2 feet. Isolated showers.
.THURSDAY NIGHT AND FRIDAY...Northeast to east winds near 10
knots. Seas around 2 feet. Isolated showers.
.FRIDAY NIGHT...Northeast to east winds 10 to 15 knots. Seas
building to 2 to 3 feet. Isolated showers.

$$

GMZ033-034-082130-
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-
435 AM EST Mon Dec 8 2025

.TODAY...Southwest to west winds near 10 knots, becoming
west to northwest. Seas 1 to 2 feet, building to around 2 feet.
Wave Detail: Southwest to west 2 feet at 4 seconds. Numerous
showers and isolated thunderstorms.
.TONIGHT...Northwest to north winds 10 to 15 knots, becoming
north to northeast 15 to 20 knots. Seas 1 to 2 feet, building to
2 to 4 feet, occasionally to 5 feet. Wave Detail:
Northwest 2 feet at 4 seconds, becoming northwest to north 3 feet
at 5 seconds. Scattered showers.
.TUESDAY...Northeast winds 15 to 20 knots, decreasing to near 15
knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail:
Northwest to north 3 feet at 5 seconds. Scattered showers.
.TUESDAY NIGHT...Northeast winds decreasing to 10 to 15 knots.
Seas subsiding to 2 to 4 feet, occasionally to 5 feet. Isolated
showers.
.WEDNESDAY...North to northeast winds near 10 knots. Seas 2 to 3
feet. Isolated showers.
.WEDNESDAY NIGHT...North winds near 10 knots. Seas subsiding to 1
to 2 feet. Isolated showers.
.THURSDAY...North to northeast winds near 10 knots. Seas 1 to
2 feet. Isolated showers.
.THURSDAY NIGHT AND FRIDAY...Northeast to east winds near 10
knots. Seas around 1 foot. Isolated showers.
.FRIDAY NIGHT...Northeast to east winds near 10 knots. Seas 1 to
2 feet. Isolated showers.

$$

AJP