880
FZUS52 KKEY 061429
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
1029 AM EDT Mon Oct 6 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.

GMZ005-070230-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1029 AM EDT Mon Oct 6 2025

.SYNOPSIS...A combination of a stationary frontal boundary and a
weak area of low pressure still situated near the Bahamas will
make for a messy weather pattern through the next several days.
This will maintain above normal rain chances through the entire
forecast period. In addition, it will keeps winds fluctuating
between northeast and southeast at times. At this time, the
strongest breezes look to stay north of our waters but will be
watching for updates.

The Approximate Shoreward Edge of the Gulf Stream as of October
01...

42 NM South of Dry Tortugas Light...on Loggerhead Key.
33 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
33 NM South of Sand Key Light...off Key West.
35 NM South of Looe Key...off Big Pine Key.
16 NM Southeast of Sombrero Key Light...off Marathon.
10 NM Southeast of Alligator Reef Light...off Islamorada.
 6 NM Southeast of Molasses Reef Light...off Key Largo.
 5 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.

$$

GMZ031-070230-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
1029 AM EDT Mon Oct 6 2025

.THIS AFTERNOON...North to northeast winds near 5 knots. Bay
waters smooth. Scattered showers and isolated thunderstorms.
.TONIGHT...Northeast to east winds near 5 knots. Bay waters
smooth. Scattered showers and isolated thunderstorms.
.TUESDAY...Northeast to east winds near 5 knots, increasing to 5
to 10 knots. Bay waters smooth, becoming smooth to a light chop.
Numerous showers and isolated thunderstorms.
.TUESDAY 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. Scattered showers and isolated thunderstorms.
.WEDNESDAY...East winds decreasing to near 10 knots. Bay waters
becoming a light chop. Scattered showers and isolated
thunderstorms.
.WEDNESDAY NIGHT...Northeast to east winds near 10 knots. Bay
waters a light chop. Scattered showers and isolated
thunderstorms.
.THURSDAY...East winds near 10 knots. Bay waters a light chop.
Scattered showers and isolated thunderstorms.
.THURSDAY NIGHT...East to southeast winds 5 to 10 knots. Bay
waters smooth to a light chop. Scattered showers and isolated
thunderstorms.
.FRIDAY...Southeast to south winds 5 to 10 knots, becoming east to
southeast. Bay waters smooth to a light chop. Scattered showers
and isolated thunderstorms.
.FRIDAY NIGHT...East winds 5 to 10 knots, becoming north to
northeast. Bay waters smooth to a light chop. Scattered showers
and isolated thunderstorms.

$$

GMZ032-035-070230-
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-
1029 AM EDT Mon Oct 6 2025

.THIS AFTERNOON...North to northeast winds near 5 knots. Seas 1
foot or less. Nearshore waters smooth. Scattered showers and
isolated thunderstorms.
.TONIGHT...Northeast winds near 5 knots, increasing to 5 to 10
knots. Seas 1 foot or less. Nearshore waters smooth, becoming
smooth to a light chop. Scattered showers and isolated
thunderstorms.
.TUESDAY...Northeast to east winds 5 to 10 knots, increasing to
near 10 knots. Seas 1 foot or less, building to around 1 foot.
Nearshore waters smooth to a light chop, becoming a light chop.
Numerous showers and isolated thunderstorms.
.TUESDAY NIGHT...Northeast to east winds near 10 knots, increasing
to 10 to 15 knots. Seas around 1 foot. Nearshore waters a light
chop, becoming a light to moderate chop. Scattered showers and
isolated thunderstorms.
.WEDNESDAY...East winds decreasing to near 10 knots. Seas around 1
foot. Nearshore waters becoming a light chop. Scattered showers
and isolated thunderstorms.
.WEDNESDAY NIGHT...East winds near 10 knots. Seas around 1 foot.
Nearshore waters a light chop. Scattered showers and isolated
thunderstorms.
.THURSDAY...East winds near 10 knots. Seas around 1 foot.
Nearshore waters a light chop. Scattered showers and isolated
thunderstorms.
.THURSDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less.
Nearshore waters smooth to a light chop. Scattered showers and
isolated thunderstorms.
.FRIDAY...East to southeast winds 5 to 10 knots, becoming
northeast to east. Seas 1 foot or less. Nearshore waters smooth
to a light chop. Scattered showers and isolated thunderstorms.
.FRIDAY NIGHT...Northeast winds 5 to 10 knots. Seas 1 foot or
less. Nearshore waters smooth to a light chop. Scattered showers
and isolated thunderstorms.

$$

GMZ042>044-070230-
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-
1029 AM EDT Mon Oct 6 2025

.THIS AFTERNOON...Northeast winds near 5 knots. Seas 1 foot or
less. Nearshore waters smooth. Scattered showers and isolated
thunderstorms.
.TONIGHT...Northeast to east winds near 5 knots, increasing to 5
to 10 knots. Seas 1 foot or less. Nearshore waters smooth,
becoming smooth to a light chop. Scattered showers and isolated
thunderstorms.
.TUESDAY...Northeast to east 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. Numerous showers and isolated
thunderstorms.
.TUESDAY NIGHT...Northeast to east winds near 10 knots, increasing
to 10 to 15 knots. Seas around 1 foot, building to 1 to 2 feet.
Nearshore waters a light chop, becoming a light to moderate chop.
Scattered showers and isolated thunderstorms.
.WEDNESDAY...East winds decreasing to near 10 knots. Seas
subsiding to around 1 foot. Nearshore waters becoming a light
chop. Scattered showers and isolated thunderstorms.
.WEDNESDAY NIGHT...East winds near 10 knots. Seas around 1 foot.
Nearshore waters a light chop. Scattered showers and isolated
thunderstorms.
.THURSDAY...East winds near 10 knots. Seas around 1 foot.
Nearshore waters a light chop. Scattered showers and isolated
thunderstorms.
.THURSDAY NIGHT...East to southeast winds 5 to 10 knots. Seas
around 1 foot. Nearshore waters smooth to a light chop. Scattered
showers and isolated thunderstorms.
.FRIDAY...Southeast to south winds 5 to 10 knots, becoming east.
Seas around 1 foot. Nearshore waters smooth to a light chop.
Scattered showers and isolated thunderstorms.
.FRIDAY NIGHT...North to northeast winds 5 to 10 knots. Seas
around 1 foot. Nearshore waters smooth to a light chop. Scattered
showers and isolated thunderstorms.

$$

GMZ052>055-072>075-070230-
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-
1029 AM EDT Mon Oct 6 2025

.THIS AFTERNOON...Northeast winds near 5 knots. Seas 1 to 2 feet.
Wave Detail: Northeast to east 1 foot at 5 seconds. Scattered
showers and isolated thunderstorms.
.TONIGHT...Northeast to east winds near 5 knots, increasing to 5
to 10 knots. Seas 1 to 2 feet. Wave Detail: Northeast 1 foot at 4
seconds. Scattered showers and isolated thunderstorms.
.TUESDAY...Northeast to east winds 5 to 10 knots, increasing to
near 10 knots. Seas 1 to 2 feet. Wave Detail: Northeast to east 2
feet at 4 seconds. Scattered showers and isolated thunderstorms.
.TUESDAY NIGHT...Northeast to east winds near 10 knots. Seas
around 2 feet. Scattered showers and isolated thunderstorms.
.WEDNESDAY...East winds near 10 knots. Seas around 2 feet.
Scattered showers and isolated thunderstorms.
.WEDNESDAY NIGHT...East winds near 10 knots. Seas around 2 feet.
Scattered showers and isolated thunderstorms.
.THURSDAY...East winds near 10 knots. Seas 1 to 2 feet. Numerous
showers and isolated thunderstorms.
.THURSDAY NIGHT...East to southeast winds 5 to 10 knots. Seas
1 to 2 feet. Numerous showers and isolated thunderstorms.
.FRIDAY...South winds 5 to 10 knots, becoming variable. Seas
around 1 foot. Numerous showers and isolated thunderstorms.
.FRIDAY NIGHT...Variable winds 5 to 10 knots. Seas around 1 foot.
Scattered showers and isolated thunderstorms.

$$

GMZ033-034-070230-
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-
1029 AM EDT Mon Oct 6 2025

.THIS AFTERNOON...Northeast winds near 5 knots. Seas 1 foot or
less. Scattered showers and isolated thunderstorms.
.TONIGHT...Northeast winds near 5 knots, increasing to 5 to 10
knots. Seas 1 foot or less, building to around 1 foot. Wave
Detail: North to northeast 1 foot at 3 seconds. Scattered showers
and isolated thunderstorms.
.TUESDAY...Northeast to east winds 5 to 10 knots, increasing to
near 10 knots. Seas around 1 foot. Wave Detail: Northeast 1 foot
at 3 seconds. Scattered showers and isolated thunderstorms.
.TUESDAY NIGHT...Northeast to east winds increasing to 10 to 15
knots. Seas building to 1 to 2 feet. Scattered showers and
isolated thunderstorms.
.WEDNESDAY...East winds 10 to 15 knots. Seas around 2 feet.
Scattered showers and isolated thunderstorms.
.WEDNESDAY NIGHT...Northeast to east winds 10 to 15 knots. Seas
1 to 2 feet. Scattered showers and isolated thunderstorms.
.THURSDAY...East winds 10 to 15 knots. Seas 1 to 2 feet.
Scattered showers and isolated thunderstorms.
.THURSDAY NIGHT...East winds 10 to 15 knots, decreasing to near 10
knots. Seas 1 to 2 feet, subsiding to around 1 foot. Scattered
showers and isolated thunderstorms.
.FRIDAY AND FRIDAY NIGHT...Northeast to east winds 5 to 10 knots.
Seas around 1 foot. Scattered showers and isolated thunderstorms.

$$