796
FZUS52 KKEY 012014
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
414 PM EDT Wed Oct 1 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.

GMZ005-020815-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
414 PM EDT Wed Oct 1 2025

.SYNOPSIS...Hurricane Imelda will continue to track northeastward,
and will allow for higher pressure to build in its place,
resulting in gentle breezes gradually slacken into Thursday
morning. The high pressure over the Eastern Seaboard will slowly
slide eastward into the western North Atlantic, and build, freshening
northeast to east breezes starting Thursday afternoon. Winds will
then clock around towards the southeast for the upcoming weekend.

The Approximate Shoreward Edge of the Gulf Stream as of September
24...

53 NM South of Dry Tortugas Light...on Loggerhead Key.
37 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
37 NM South of Sand Key Light...off Key West.
28 NM South of Looe Key...off Big Pine Key.
22 NM Southeast of Sombrero Key Light...off Marathon.
18 NM Southeast of Alligator Reef Light...off Islamorada.
15 NM Southeast of Molasses Reef Light...off Key Largo.
 6 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.

$$

GMZ031-020815-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
414 PM EDT Wed Oct 1 2025

.TONIGHT...Northwest to north winds 5 to 10 knots, becoming
northeast after midnight. Bay waters smooth to a light chop.
Scattered showers and isolated thunderstorms.
.THURSDAY...Northeast winds near 10 knots, becoming northeast to
east and increasing to 10 to 15 knots. Bay waters a light chop,
becoming a light to moderate chop. Scattered showers and isolated
thunderstorms.
.THURSDAY NIGHT...Northeast to east winds increasing to 15 to 20
knots. Bay waters becoming choppy. Scattered showers and isolated
thunderstorms.
.FRIDAY...Northeast to east winds near 15 knots. Bay waters a
moderate chop. Scattered showers and isolated thunderstorms.
.FRIDAY NIGHT...Northeast to east winds near 15 knots. Bay waters
a moderate chop. Scattered showers and isolated thunderstorms.
.SATURDAY...East winds near 15 knots. Bay waters a moderate chop.
Scattered showers and isolated thunderstorms.
.SATURDAY NIGHT...East to southeast winds 10 to 15 knots. Bay
waters a light to moderate chop. Scattered showers and isolated
thunderstorms.
.SUNDAY...Southeast winds 10 to 15 knots. Bay waters a light to
moderate chop. Scattered showers and isolated thunderstorms.
.SUNDAY NIGHT...East to southeast winds 10 to 15 knots. Bay
waters a light to moderate chop. Scattered showers and isolated
thunderstorms.
.MONDAY...East winds 10 to 15 knots. Bay waters a light to
moderate chop. Scattered showers and isolated thunderstorms.
.MONDAY NIGHT...Northeast to east winds near 15 knots. Bay waters
a moderate chop. Scattered showers and isolated thunderstorms.

$$

GMZ032-035-020815-
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-
414 PM EDT Wed Oct 1 2025

.TONIGHT...Northwest to north winds 5 to 10 knots, becoming
northeast. Seas around 1 foot. Nearshore waters smooth to a light
chop. Scattered showers and isolated thunderstorms.
.THURSDAY...Northeast to east winds near 10 knots, increasing to
10 to 15 knots. Seas building to 1 to 2 feet. Nearshore waters a
light chop, becoming a light to moderate chop. Scattered showers
and isolated thunderstorms.
.THURSDAY NIGHT...Northeast to east winds increasing to 15 to 20
knots. Seas building to 2 to 3 feet. Nearshore waters becoming
choppy. Scattered showers and isolated thunderstorms.
.FRIDAY...Northeast to east winds near 15 knots. Seas 2 to
3 feet. Nearshore waters a moderate chop. Scattered showers and
isolated thunderstorms.
.FRIDAY NIGHT...Northeast to east winds near 15 knots. Seas 2 to 3
feet. Nearshore waters a moderate chop. Scattered showers and
isolated thunderstorms.
.SATURDAY...East winds near 15 knots. Seas 1 to 2 feet, except
2 to 3 feet west of the Marquesas Keys. Nearshore waters a
moderate chop. Scattered showers and isolated thunderstorms.
.SATURDAY NIGHT...East to southeast winds near 15 knots. Seas
1 to 2 feet, except 2 to 3 feet west of the Marquesas Keys.
Nearshore waters a moderate chop. Scattered showers and isolated
thunderstorms.
.SUNDAY...Southeast winds 10 to 15 knots. Seas 1 to 2 feet.
Nearshore waters a light to moderate chop. Scattered showers and
isolated thunderstorms.
.SUNDAY NIGHT...East to southeast winds 10 to 15 knots. Seas 1 to
2 feet. Nearshore waters a light to moderate chop. Scattered
showers and isolated thunderstorms.
.MONDAY...East winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore
waters a light to moderate chop. Scattered showers and isolated
thunderstorms.
.MONDAY NIGHT...Northeast to east winds near 15 knots. Seas 1 to
2 feet, except 2 to 3 feet west of the Marquesas Keys. Nearshore
waters a moderate chop. Scattered showers and isolated
thunderstorms.

$$

GMZ042>044-020815-
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-
414 PM EDT Wed Oct 1 2025

.TONIGHT...Northwest to north winds 5 to 10 knots, becoming
northeast. Seas around 1 foot. Nearshore waters smooth to a light
chop. Scattered showers and isolated thunderstorms.
.THURSDAY...Northeast to east winds near 10 knots, increasing to
10 to 15 knots. Seas 1 to 2 feet, except building to 2 to 3 feet
off the Upper Keys. Nearshore waters a light chop, becoming a
light to moderate chop. Scattered showers and isolated
thunderstorms.
.THURSDAY NIGHT...Northeast to east winds increasing to 15 to 20
knots. Seas building to 2 to 4 feet. Nearshore waters becoming
choppy. Scattered showers and isolated thunderstorms.
.FRIDAY...Northeast to east winds 15 to 20 knots, decreasing to near
15 knots. Seas subsiding to 2 to 3 feet. Nearshore waters choppy,
becoming a moderate chop. Scattered showers and isolated
thunderstorms.
.FRIDAY NIGHT...Northeast to east winds near 15 knots. Seas 2 to
3 feet. Nearshore waters a moderate chop. Scattered showers and
isolated thunderstorms.
.SATURDAY...East winds near 15 knots. Seas 2 to 3 feet. Nearshore
waters a moderate chop. Scattered showers and isolated
thunderstorms.
.SATURDAY NIGHT...East to southeast winds near 15 knots. Seas
2 to 3 feet. Nearshore waters a moderate chop. Scattered showers
and isolated thunderstorms.
.SUNDAY...Southeast winds 10 to 15 knots. Seas 2 to 3 feet.
Nearshore waters a light to moderate chop. Scattered showers and
isolated thunderstorms.
.SUNDAY NIGHT...East winds near 15 knots. Seas 2 to 3 feet.
Nearshore waters a moderate chop. Scattered showers and isolated
thunderstorms.
.MONDAY...East winds near 15 knots. Seas around 2 feet. Nearshore
waters a moderate chop. Scattered showers and isolated
thunderstorms.
.MONDAY NIGHT...Northeast to east winds near 15 knots. Seas
2 to 3 feet. Nearshore waters a moderate chop. Scattered showers
and isolated thunderstorms.

$$

GMZ052>055-072>075-020815-
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-
414 PM EDT Wed Oct 1 2025

.TONIGHT...Northwest to north winds 5 to 10 knots, becoming north
to northeast. Seas 2 to 4 feet, due to northerly swell. Wave
Detail: West to northwest 2 feet at 5 seconds and northeast 2 feet
at 8 seconds. Isolated showers and thunderstorms.
.THURSDAY...Northeast winds 5 to 10 knots, increasing to 10 to
15 knots in the afternoon. Seas 2 to 4 feet, occasionally to
5 feet, due to northerly swell. Wave Detail: Northeast 3 feet at
4 seconds and northeast 2 feet at 8 seconds. Scattered showers and
isolated thunderstorms.
.THURSDAY NIGHT...Northeast winds 15 to 20 knots, becoming
northeast to east and decreasing to near 15 knots. Seas 3 to 5
feet, occasionally to 6 feet. Wave Detail: Northeast 4 feet at 5
seconds. Scattered showers and isolated thunderstorms.
.FRIDAY...Northeast to east winds near 15 knots. Seas 3 to 5
feet, occasionally to 6 feet. Scattered showers and isolated
thunderstorms.
.FRIDAY NIGHT...Northeast to east winds near 15 knots, becoming
east to southeast and decreasing to 10 to 15 knots. Seas 3 to 5
feet, occasionally to 6 feet, subsiding to 3 to 4 feet. Scattered
showers and isolated thunderstorms.
.SATURDAY...East to southeast winds 10 to 15 knots. Seas 3 to
4 feet, occasionally to 5 feet. Scattered showers and isolated
thunderstorms.
.SATURDAY NIGHT...East to southeast winds 10 to 15 knots. Seas
3 to 4 feet, occasionally to 5 feet. Scattered showers and
isolated thunderstorms.
.SUNDAY...Southeast winds 10 to 15 knots. Seas 2 to 4 feet.
Scattered showers and isolated thunderstorms.
.SUNDAY NIGHT...East to southeast winds near 15 knots. Seas 2 to
4 feet. Scattered showers and isolated thunderstorms.
.MONDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Scattered
showers and isolated thunderstorms.
.MONDAY NIGHT...East winds near 15 knots. Seas 2 to 4 feet.
Scattered showers and isolated thunderstorms.

$$

GMZ033-034-020815-
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-
414 PM EDT Wed Oct 1 2025

.TONIGHT...Northwest to north winds 5 to 10 knots, becoming
northeast after midnight. Seas 1 to 2 feet. Wave Detail:
Northwest to north 2 feet at 5 seconds. Scattered showers and
isolated thunderstorms.
.THURSDAY...Northeast to east winds near 10 knots. Seas 1 to
2 feet. Wave Detail: North to northeast 1 foot at 4 seconds.
Scattered showers and isolated thunderstorms.
.THURSDAY NIGHT...Northeast to east winds 10 to 15 knots,
increasing to 15 to 20 knots. Seas around 2 feet, building to 3
to 4 feet, occasionally to 5 feet. Wave Detail: Northeast 2 feet
at 4 seconds, becoming northeast to east 4 feet at 5 seconds.
Scattered showers and isolated thunderstorms.
.FRIDAY...Northeast to east winds 15 to 20 knots, decreasing to
near 15 knots. Seas 2 to 4 feet, occasionally to 5 feet.
Scattered showers and isolated thunderstorms.
.FRIDAY NIGHT...Northeast to east winds 15 to 20 knots. Seas 3 to
4 feet, occasionally to 5 feet. Scattered showers and isolated
thunderstorms.
.SATURDAY...East winds near 15 knots. Seas subsiding to 2 to 3
feet. Scattered showers and isolated thunderstorms.
.SATURDAY NIGHT...East to southeast winds near 15 knots. Seas
2 to 3 feet. Scattered showers and isolated thunderstorms.
.SUNDAY...Southeast winds 10 to 15 knots. Seas subsiding to around
2 feet. Scattered showers and isolated thunderstorms.
.SUNDAY NIGHT...East to southeast winds near 15 knots. Seas
building to 2 to 3 feet. Scattered showers and isolated
thunderstorms.
.MONDAY...East winds 10 to 15 knots. Seas 1 to 2 feet. Scattered
showers and isolated thunderstorms.
.MONDAY NIGHT...Northeast to east winds near 15 knots. Seas 1 to
2 feet. Scattered showers and isolated thunderstorms.

$$