302
FZUS52 KKEY 070811
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
411 AM EDT Tue Oct 7 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.

GMZ005-072015-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
411 AM EDT Tue Oct 7 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. The lax gradient will help to keep winds near
gentle to moderate, but direction will fluctuate between the
northeast and southeast at times. At this time, the strongest
breezes look to stay confined to the northern portions of our deep
Gulf waters, but we will continue to monitor model forecast
trends.

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.

$$

GMZ031-072015-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
411 AM EDT Tue Oct 7 2025

.TODAY...East winds 5 to 10 knots, increasing to near 10 knots.
Bay waters smooth to a light chop, becoming a light chop.
Numerous showers and isolated thunderstorms.
.TONIGHT...Northeast to east winds increasing to 10 to 15 knots.
Bay waters 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...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.
Numerous showers and isolated thunderstorms.
.THURSDAY NIGHT...East to southeast winds near 10 knots,
decreasing to 5 to 10 knots. Bay waters a light chop, becoming a
smooth to a light chop. Numerous showers and isolated
thunderstorms.
.FRIDAY...East to southeast winds near 5 knots, becoming northeast
to east. Bay waters smooth. Numerous showers and isolated
thunderstorms.
.FRIDAY NIGHT...North to northeast winds 5 to 10 knots, becoming
north. Bay waters smooth to a light chop. Scattered showers and
isolated thunderstorms.
.SATURDAY AND SATURDAY NIGHT...North winds 5 to 10 knots. Bay
waters smooth to a light chop. Scattered showers and isolated
thunderstorms.

$$

GMZ032-035-072015-
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-
411 AM EDT Tue Oct 7 2025

.TODAY...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.
.TONIGHT...Northeast to east winds increasing to 10 to 15 knots.
Seas building to 1 to 2 feet. Nearshore waters becoming a light
to moderate chop. Scattered showers and isolated thunderstorms.
.WEDNESDAY...Northeast to 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 5 to 10 knots. Seas around 1 foot.
Nearshore waters smooth to a light chop. Numerous showers and
isolated thunderstorms.
.THURSDAY NIGHT...East winds 5 to 10 knots. Seas around 1 foot.
Nearshore waters smooth to a light chop. Numerous showers and
isolated thunderstorms.
.FRIDAY...East winds near 5 knots. Seas 1 foot or less. Nearshore
waters smooth. Numerous showers and isolated thunderstorms.
.FRIDAY NIGHT...North to northeast winds increasing to 5 to 10
knots. Seas around 1 foot. Nearshore waters becoming smooth to a
light chop. Scattered showers and isolated thunderstorms.
.SATURDAY AND SATURDAY NIGHT...North winds 10 to 15 knots. Seas 1
to 2 feet. Nearshore waters a light to moderate chop. Scattered
showers and isolated thunderstorms.

$$

GMZ042>044-072015-
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-
411 AM EDT Tue Oct 7 2025

.TODAY...Northeast to east winds near 5 knots, increasing to 5 to
10 knots. Seas around 1 foot. Nearshore waters smooth, becoming smooth
to a light chop. Numerous showers and isolated thunderstorms.
.TONIGHT...Northeast to 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. Scattered
showers and isolated thunderstorms.
.WEDNESDAY...Northeast to east winds near 10 knots, decreasing to 5
to 10 knots. Seas 1 to 2 feet, subsiding to around 1 foot.
Nearshore waters a light chop, becoming smooth to a light chop.
Scattered showers and isolated thunderstorms.
.WEDNESDAY NIGHT...East winds near 5 to 10 knots. Seas around 1
foot. Nearshore waters smooth to a light chop. Scattered showers
and isolated thunderstorms.
.THURSDAY...East winds 5 to 10 knots. Seas around 1 foot.
Nearshore waters smooth to a light chop. Numerous showers and
isolated thunderstorms.
.THURSDAY NIGHT...East winds 5 to 10 knots. Seas around 1 foot.
Nearshore waters smooth to a light chop. Numerous showers and
isolated thunderstorms.
.FRIDAY...East to southeast winds 5 to 10 knots, becoming
north to northeast. Seas around 1 foot. Nearshore waters smooth
to a light chop. Numerous 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.
.SATURDAY...North winds 5 to 10 knots, increasing to near 10 knots.
Seas around 1 foot, except building to 2 to 3 feet west of
Cosgrove Shoal Light. Nearshore waters smooth to a light chop,
becoming a light chop. Scattered showers and isolated
thunderstorms.
.SATURDAY NIGHT...North winds near 10 knots. Seas around 1 foot,
except 2 to 3 feet west of Cosgrove Shoal Light. Nearshore waters
a light chop. Scattered showers and isolated thunderstorms.

$$

GMZ052>055-072>075-072015-
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-
411 AM EDT Tue Oct 7 2025

.TODAY...Northeast to east winds near 5 knots, increasing to 5 to
10 knots. Seas around 1 foot, building to 1 to 2 feet. Wave
Detail: Northeast to east 1 foot at 4 seconds. Numerous showers
and isolated thunderstorms.
.TONIGHT...Northeast to east winds 5 to 10 knots. Seas 1 to
2 feet. Wave Detail: Northeast 2 feet at 5 seconds. Numerous
showers and isolated thunderstorms.
.WEDNESDAY...East winds 5 to 10 knots. Seas 1 to 2 feet. Wave
Detail: Northeast to east 2 feet at 5 seconds. Numerous showers
and isolated thunderstorms.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 1 to 2 feet.
Numerous showers and isolated thunderstorms.
.THURSDAY...East to southeast winds 5 to 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...Southeast to south winds 5 to 10 knots, becoming
northeast to east. Seas 1 to 2 feet. Numerous showers and
isolated thunderstorms.
.FRIDAY NIGHT...Northeast to east winds 5 to 10 knots, becoming
north to northeast. Seas 1 to 2 feet. Numerous showers and
isolated thunderstorms.
.SATURDAY...Northwest to north winds 5 to 10 knots, increasing to
near 10 knots. Seas 1 to 2 feet, building 2 to 3 feet. Scattered
showers and isolated thunderstorms.
.SATURDAY NIGHT...North winds near 10 knots. Seas 2 to 3 feet.
Scattered showers and isolated thunderstorms.

$$

GMZ033-034-072015-
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-
411 AM EDT Tue Oct 7 2025

.TODAY...Northeast to east winds 5 to 10 knots, increasing to near
10 knots. Seas around 1 foot, building to 1 to 2 feet. Wave
Detail: Northeast 1 foot at 4 seconds. Scattered showers and
isolated thunderstorms.
.TONIGHT...Northeast to east winds near 10 knots, increasing to 10
to 15 knots. Seas 1 to 2 feet, building to 2 to 3 feet. Wave
Detail: Northeast 2 feet at 3 seconds. Scattered showers and
isolated thunderstorms.
.WEDNESDAY...Northeast to east winds 10 to 15 knots. Seas 2 to
3 feet. Wave Detail: Northeast 3 feet at 4 seconds. Scattered
showers and isolated thunderstorms.
.WEDNESDAY NIGHT...Northeast to east winds 10 to 15 knots. Seas
2 to 3 feet. Scattered showers and isolated thunderstorms.
.THURSDAY...Northeast to east winds 10 to 15 knots. Seas 2 to
3 feet. Numerous showers and isolated thunderstorms.
.THURSDAY NIGHT...Northeast to east winds 10 to 15 knots,
decreasing to near 10 knots. Seas 2 to 3 feet, subsiding to 1 to
2 feet. Numerous showers and isolated thunderstorms.
.FRIDAY...Northeast winds near 10 knots. Seas 1 to 2 feet.
Numerous showers and isolated thunderstorms.
.FRIDAY NIGHT THROUGH SATURDAY NIGHT...North to northeast winds
10 to 15 knots. Seas 2 to 3 feet. Scattered showers and isolated
thunderstorms.

$$

DP