248
FZUS52 KKEY 030217
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
1017 PM EDT Fri Oct 2 2026

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.

The Wave Detail section highlights the period and direction of
origin for the highest-energy waves, as well as any long-period
swells moving in a different direction than the wind.

GMZ005-031430-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1017 PM EDT Fri Oct 2 2026

.SYNOPSIS...
Atlantic high pressure offshore of the southeastern U.S. will
remain in place during the start of the weekend. This feature
will maintain moderate east to southeasterly breezes initially
across the local waters, but a gradual slackening trend will occur
overnight and Saturday. In addition, relatively drier conditions
will settle in for the weekend. However, an additional push of
moisture may come by the middle of next week. Either way, some
showers and thunderstorms will be possible through the forecast
period.

The Approximate Shoreward Edge of the Gulf Stream as of October 2, 2026...

39 NM south-southeast of Dry Tortugas Light, on Loggerhead Key
14 NM south-southeast of Cosgrove Shoal Light, off the Marquesas Keys
 8 NM south-southeast of Sand Key Light, off Key West
 2 NM south-southeast of Looe Key, off Big Pine Key
 1 NM south-southeast of Sombrero Key Light, off Marathon
 0 NM south-southeast of Alligator Reef Light, off Islamorada
 2 NM northwest of Molasses Reef Light, off Key Largo
 2 NM northwest of Carysfort Reef Light, off Ocean Reef

Gulf Stream Information Courtesy of the Naval Oceanographic Office.

$$

GMZ031-031430-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
1017 PM EDT Fri Oct 2 2026

.OVERNIGHT...East winds 10 to 15 knots, decreasing to near 10
knots. Bay waters a light to moderate chop, becoming a light
chop. A chance of showers and thunderstorms.
.SATURDAY...East winds 10 to 15 knots. Bay waters a light to
moderate chop. A chance of showers and thunderstorms.
.SATURDAY NIGHT...East winds near 10 knots. Bay waters a light
chop. A chance of showers and thunderstorms.
.SUNDAY...East to southeast winds near 10 knots. Bay waters a
light chop. A slight chance of showers and thunderstorms.
.SUNDAY NIGHT...East to southeast winds 5 to 10 knots. Bay waters
smooth to a light chop.
.MONDAY...Southeast winds 5 to 10 knots. Bay waters smooth to a
light chop. A slight chance of showers and thunderstorms.
.MONDAY NIGHT...East to southeast winds near 5 knots. Bay waters
smooth. A slight chance of showers and thunderstorms.
.TUESDAY...South winds near 5 knots. Bay waters smooth. A chance
of showers and thunderstorms.
.TUESDAY NIGHT...South to southwest winds near 5 knots. Bay
waters smooth. A chance of showers and thunderstorms.
.WEDNESDAY...South to southwest winds 5 to 10 knots. Bay waters
smooth to a light chop. A chance of showers and thunderstorms.
.WEDNESDAY NIGHT...Southwest to west winds near 5 knots, becoming
south. Bay waters smooth. A chance of showers and thunderstorms.

$$

GMZ032-035-031430-
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-
1017 PM EDT Fri Oct 2 2026

.OVERNIGHT...East to southeast winds near 15 knots, decreasing to
10 to 15 knots. Seas around 2 feet, subsiding to 1 to 2 feet.
Nearshore waters a moderate chop, becoming a light to moderate
chop. A chance of showers and thunderstorms.
.SATURDAY...East to southeast winds 10 to 15 knots. Seas around
1 to 2 feet. Nearshore waters a light to moderate chop. A chance
of showers and thunderstorms.
.SATURDAY NIGHT...East winds 10 to 15 knots, decreasing to near 10
knots. Seas 1 to 2 feet, subsiding to around 1 foot. Nearshore
waters a light to moderate chop, becoming a light chop. A chance
of showers and thunderstorms.
.SUNDAY...East to southeast winds near 10 knots, decreasing to 5
to 10 knots. Seas around 1 foot. Nearshore waters a light chop,
becoming smooth to a light chop. A slight chance of showers and
thunderstorms.
.SUNDAY NIGHT...East to southeast winds 5 to 10 knots. Seas
1 foot or less. Nearshore waters smooth to a light chop. A slight
chance of showers.
.MONDAY...Southeast winds 5 to 10 knots. Seas 1 foot or less.
Nearshore waters smooth to a light chop. A slight chance of
showers and thunderstorms.
.MONDAY NIGHT...Southeast to south winds near 5 knots. Seas 1
foot or less. Nearshore waters smooth. A slight chance of showers
and thunderstorms.
.TUESDAY...South winds near 5 knots. Seas 1 foot or less.
Nearshore waters smooth. A chance of showers and thunderstorms.
.TUESDAY NIGHT...South winds near 5 knots. Seas 1 foot or less.
Nearshore waters smooth. A chance of showers and thunderstorms.
.WEDNESDAY...South to southwest winds 5 to 10 knots. Seas 1 foot
or less. Nearshore waters smooth to a light chop. Showers likely
with a chance of thunderstorms.
.WEDNESDAY NIGHT...Southwest winds near 5 knots, becoming
southeast to south. Seas 1 foot or less. Nearshore waters smooth.
A chance of showers and thunderstorms.

$$

GMZ042>044-031430-
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-
1017 PM EDT Fri Oct 2 2026

.OVERNIGHT...East winds near 15 knots, decreasing to 10 to 15
knots. Seas 2 to 3 feet, subsiding to around 2 feet. Nearshore
waters a moderate chop, becoming a light to moderate chop. A
chance of showers and thunderstorms.
.SATURDAY...East to southeast winds 10 to 15 knots. Seas around
2 feet. Nearshore waters a light to moderate chop. A chance of
showers and thunderstorms.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas around 2 feet.
Nearshore waters a light to moderate chop. A chance of showers
and thunderstorms.
.SUNDAY...East to southeast decreasing to near 10 knots. Seas
subsiding to 1 to 2 feet. Nearshore waters becoming a light chop.
A slight chance of showers and thunderstorms.
.SUNDAY NIGHT...East to southeast 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. A
slight chance of showers and thunderstorms.
.MONDAY...Southeast winds 5 to 10 knots. Seas around 1 foot.
Nearshore waters smooth to a light chop. A slight chance of
showers and thunderstorms.
.MONDAY NIGHT...Southeast winds near 5 knots. Seas around 1 foot.
Nearshore waters smooth. A slight chance of showers and
thunderstorms.
.TUESDAY...South winds near 5 knots. Seas around 1 foot.
Nearshore waters smooth. A chance of showers and thunderstorms.
.TUESDAY NIGHT...South winds near 5 knots. Seas around 1 foot.
Nearshore waters smooth. A chance of showers and thunderstorms.
.WEDNESDAY...South to southwest winds near 5 knots. Seas 1 foot
or less. Nearshore waters smooth to a light chop. A chance of
showers and thunderstorms.
.WEDNESDAY NIGHT...South to southwest winds 5 to 10 knots. Seas
1 foot or less. Nearshore waters smooth to a light chop. A chance
of showers and thunderstorms.

$$

GMZ052>055-072>075-031430-
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-
1017 PM EDT Fri Oct 2 2026

.OVERNIGHT...East to southeast winds near 15 knots, decreasing to
10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet,
subsiding to 2 to 3 feet. Wave Detail: East 3 feet at 5 seconds. A
chance of showers and thunderstorms.
.SATURDAY...East to southeast winds 10 to 15 knots. Seas 2 to
3 feet. Wave Detail: East to southeast 3 feet at 5 seconds. A
chance of showers and thunderstorms.
.SATURDAY NIGHT...East to southeast winds 10 to 15 knots. Seas
2 to 3 feet. Wave Detail: East 3 feet at 5 seconds. A chance of
showers and thunderstorms.
.SUNDAY...East to southeast winds 10 to 15 knots, decreasing to
near 10 knots. Seas 2 to 3 feet, subsiding to around 2 feet. A
slight chance of showers and thunderstorms.
.SUNDAY NIGHT...East to southeast winds near 10 knots. Seas
around 2 feet. A chance of thunderstorms with a slight chance of
showers.
.MONDAY...Southeast winds 5 to 10 knots. Seas 1 to 2 feet. A
slight chance of showers and thunderstorms.
.MONDAY NIGHT...East to southeast winds 5 to 10 knots. Seas
around 1 foot. A slight chance of showers and thunderstorms.
.TUESDAY...South winds 5 to 10 knots. Seas around 1 foot. A
slight chance of showers and thunderstorms.
.TUESDAY NIGHT...Southeast to south winds near 5 knots. Seas
around 1 foot. A chance of showers and thunderstorms.
.WEDNESDAY...South to southwest winds near 5 knots, increasing to
5 to 10 knots. Seas around 1 foot. A chance of showers and
thunderstorms.
.WEDNESDAY NIGHT...South winds 5 to 10 knots. Seas around 1 foot.
A chance of showers and thunderstorms.

$$

GMZ033-034-031430-
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-
1017 PM EDT Fri Oct 2 2026

.OVERNIGHT...East to southeast winds near 15 knots, decreasing to
10 to 15 knots. Seas 2 to 3 feet. Wave Detail: East to southeast
3 feet at 4 seconds. A chance of showers and thunderstorms.
.SATURDAY...East to southeast winds 10 to 15 knots. Seas 2 to
3 feet. Wave Detail: East to southeast 2 feet at 4 seconds. A
chance of showers and thunderstorms.
.SATURDAY NIGHT...East to southeast winds 10 to 15 knots. Seas
2 to 3 feet, subsiding to around 2 feet. Wave Detail: East 2 feet
at 4 seconds. A chance of showers and thunderstorms.
.SUNDAY...East to southeast winds 10 to 15 knots, decreasing to
near 10 knots. Seas around 2 feet, subsiding to 1 to 2 feet. A
chance of showers with a slight chance of thunderstorms.
.SUNDAY NIGHT...East to southeast winds near 10 knots. Seas 1 to
2 feet. A slight chance of showers and thunderstorms.
.MONDAY...Southeast winds near 10 knots, becoming southeast to
south. Seas around 1 foot. A slight chance of showers and
thunderstorms.
.MONDAY NIGHT...Southeast winds near 5 knots. Seas around 1 foot.
A slight chance of showers and thunderstorms.
.TUESDAY...South winds near 5 knots. Seas around 1 foot. A chance
of showers and thunderstorms.
.TUESDAY NIGHT...South to southwest winds 5 to 10 knots. Seas
around 1 foot. Showers likely with a chance of thunderstorms.
.WEDNESDAY...South to southwest winds 5 to 10 knots. Seas 1 foot
or less. Showers likely with a chance of thunderstorms.
.WEDNESDAY NIGHT...South to southwest winds 5 to 10 knots. Seas
1 foot or less. Showers likely with a chance of thunderstorms.

$$