Coastal Waters Forecast
Issued by NWS Key West, FL

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FZUS52 KKEY 050226
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
1026 PM EDT Fri Oct 4 2024

Florida Bay, Hawk Channel and Straits of Florida from Ocean Reef
to south of Dry Tortugas, and the extreme southeastern Gulf of
Mexico, 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.

GMZ005-050845-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1026 PM EDT Fri Oct 4 2024

.SYNOPSIS...Gentle to moderate east to southeast breezes will
continue tonight through the weekend, as a broad area of low
pressure and a weak frontal boundary fester in the Gulf of Mexico.
The low pressure system is expected to slowly organize over the
Gulf, possibly into a tropical cyclone by early next week.
Regardless of development, an extended period of above normal rain
and thunder chances along with freshening breezes are expected
for early next week.

The Approximate Shoreward Edge of the Gulf Stream as of October
1...

25 NM South of Dry Tortugas Light...on Loggerhead Key.
15 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
14 NM South of Sand Key Light...off Key West.
13 NM South of Looe Key...off Big Pine Key.
15 NM South of Sombrero Key Light...off Marathon.
 8 NM Southeast of Alligator Reef Light...off Islamorada.
 3 NM Southeast of Molasses Reef Light...off Key Largo.
 3 NM East of Carysfort Reef Light...off Ocean Reef.

Gulf Stream Information Courtesy of the National Weather Service in
Key West based on products from the Real Time Ocean Forecast
System.

$$

GMZ031-050845-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
1026 PM EDT Fri Oct 4 2024

.OVERNIGHT...East winds 10 to 15 knots. Bay waters a light to
moderate chop. Scattered showers and thunderstorms.
.SATURDAY...East winds near 10 knots. Bay waters a light chop.
Scattered showers and thunderstorms.
.SATURDAY NIGHT...East to southeast winds near 10 knots. Bay
waters a light chop. Scattered showers and thunderstorms.
.SUNDAY...Southeast winds near 10 knots. Bay waters a light chop.
Scattered showers and thunderstorms.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters smooth
to a light chop. Numerous showers and scattered thunderstorms.
.MONDAY...Southeast to south winds near 10 knots, becoming south
to southwest. Bay waters a light chop. Numerous showers and
scattered thunderstorms.
.MONDAY NIGHT...South to southwest winds near 10 knots,
increasing to 10 to 15 knots. Bay waters a light chop, becoming a
light to moderate chop. Numerous showers and scattered
thunderstorms.
.TUESDAY THROUGH WEDNESDAY...Southwest winds near 15 knots. Bay
waters a moderate chop. Numerous showers and scattered
thunderstorms.
.WEDNESDAY NIGHT...Southwest winds 10 to 15 knots. Bay waters a
light to moderate chop. Scattered showers and isolated
thunderstorms.

$$

GMZ032-035-050845-
Bayside and Gulf side from Craig Key to west end of Seven Mile
Bridge-
Gulf of Mexico from west end of Seven Mile Bridge to Halfmoon
Shoal out to 5 Fathoms-
1026 PM EDT Fri Oct 4 2024

.OVERNIGHT...East winds 10 to 15 knots. Seas 1 to 2 feet.
Nearshore waters a light to moderate chop. Scattered showers and
thunderstorms.
.SATURDAY AND SATURDAY NIGHT...East to southeast winds near 10
knots. Seas around 1 foot. Nearshore waters a light chop.
Scattered showers and thunderstorms.
.SUNDAY...Southeast to south winds near 10 knots. Seas around 1
foot. Nearshore waters a light chop. Scattered showers and
thunderstorms.
.SUNDAY NIGHT...Southeast to south winds 5 to 10 knots. Seas
around 1 foot. Nearshore waters smooth to a light chop. Numerous
showers and scattered thunderstorms.
.MONDAY...Southeast to south winds near 10 knots, becoming south
to southwest and 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. Numerous showers and scattered
thunderstorms.
.MONDAY NIGHT...Southwest winds 10 to 15 knots, increasing to near
15 knots. Seas 1 to 2 feet, except building to 2 to 3 feet west
of the Marquesas Keys. Nearshore waters a light to moderate chop,
becoming a moderate chop. Numerous showers and scattered
thunderstorms.
.TUESDAY...Southwest winds 15 to 20 knots. Seas 2 to 3 feet,
except 3 to 4 feet, occasionally to 5 feet west of the Marquesas
Keys. Nearshore waters choppy. Numerous showers and scattered
thunderstorms.
.TUESDAY NIGHT AND WEDNESDAY...Southwest winds 15 to 20 knots.
Seas 2 to 3 feet, except 3 to 5 feet, occasionally to 6 feet west
of the Marquesas Keys. Nearshore waters choppy. Numerous showers
and scattered thunderstorms.
.WEDNESDAY NIGHT...West winds 10 to 15 knots. Seas 2 to 4 feet,
occasionally to 5 feet, except 4 to 6 feet, occasionally to 7
feet west of the Marquesas Keys due to west swell. Nearshore
waters a light to moderate chop. Scattered showers and isolated
thunderstorms.

$$

GMZ042>044-050845-
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-
1026 PM EDT Fri Oct 4 2024

.OVERNIGHT...East winds 10 to 15 knots. Seas around 2 feet.
Nearshore waters a light to moderate chop. Scattered showers and
thunderstorms.
.SATURDAY AND SATURDAY NIGHT...East to southeast winds near 10
knots. Seas 1 to 2 feet. Nearshore waters a light chop. Scattered
showers and thunderstorms.
.SUNDAY...Southeast to south winds near 10 knots. Seas 1 to 2
feet. Nearshore waters a light chop. Scattered showers and
thunderstorms.
.SUNDAY NIGHT...Southeast to south winds 5 to 10 knots. Seas 1 to
2 feet. Nearshore waters smooth to a light chop. Numerous showers
and scattered thunderstorms.
.MONDAY...Southeast to south winds near 10 knots, becoming south
to southwest and increasing to 10 to 15 knots. Seas 1 to
2 feet, building to around 2 feet. Nearshore waters a light chop,
becoming a light to moderate chop. Numerous showers and scattered
thunderstorms.
.MONDAY NIGHT...Southwest winds 10 to 15 knots, increasing to near
15 knots. Seas around 2 feet, building to 2 to 3 feet. Nearshore
waters a light to moderate chop. Numerous showers and scattered
thunderstorms.
.TUESDAY...Southwest winds 15 to 20 knots. Seas 2 to 3 feet,
except 3 to 4 feet, occasionally to 5 feet west of Cosgrove Shoal
Light. Nearshore waters choppy. Numerous showers and scattered
thunderstorms.
.TUESDAY NIGHT AND WEDNESDAY...South to southwest winds 15 to 20
knots. Seas 2 to 4 feet, occasionally to 5 feet. West of Cosgrove
Shoal Light, seas 4 to 5 feet, occasionally 6 feet. Nearshore
waters choppy. Numerous showers and scattered thunderstorms.
.WEDNESDAY NIGHT...West winds 10 to 15 knots. Seas 3 to 5 feet,
occasionally to 6 feet, except 4 to 6 feet, occasionally to 8
feet west of Cosgrove Shoal Light due to west swell. Nearshore
waters a light to moderate chop. Scattered showers and isolated
thunderstorms.

$$

GMZ052>055-072>075-050845-
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-
1026 PM EDT Fri Oct 4 2024

.OVERNIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail:
East 2 feet at 4 seconds. Scattered showers and thunderstorms.
.SATURDAY AND SATURDAY NIGHT...East to southeast winds near 10
knots. Seas around 2 feet. Wave Detail: East 2 feet at 4 seconds.
Scattered showers and thunderstorms.
.SUNDAY...Southeast to south winds near 10 knots. Seas 1 to 3
feet. Scattered showers and thunderstorms.
.SUNDAY NIGHT...Southeast to south winds near 10 knots. Seas 1 to
3 feet. Numerous showers and scattered thunderstorms.
.MONDAY...Southeast to south winds near 10 knots, becoming south
to southwest and increasing to 10 to 15 knots. Seas 2 to 3 feet.
Numerous showers and scattered thunderstorms.
.MONDAY NIGHT...Southwest winds 10 to 15 knots, increasing to near
15 knots. Seas 2 to 3 feet, building to 3 to 4 feet. Numerous
showers and scattered thunderstorms.
.TUESDAY...Southwest winds 15 to 20 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Numerous showers and scattered
thunderstorms.
.TUESDAY NIGHT AND WEDNESDAY...South to southwest winds 15 to 20
knots. Seas 3 to 5 feet, occasionally to 6 feet. Numerous showers
and scattered thunderstorms.
.WEDNESDAY NIGHT...West winds 10 to 15 knots. Seas 4 to 6 feet,
occasionally to 8 feet due to west swell. Scattered showers and
isolated thunderstorms.

$$

GMZ033-034-050845-
Gulf waters from East Cape Sable to Chokoloskee 20 to 60 NM out
and beyond 5 fathoms-
Gulf of Mexico including Dry Tortugas and Rebecca Shoal Channel-
1026 PM EDT Fri Oct 4 2024

.OVERNIGHT...East to southeast winds 10 to 15 knots. Seas around 2
feet. Wave Detail: East to southeast 1 foot at 3 seconds. Numerous
showers and scattered thunderstorms.
.SATURDAY AND SATURDAY NIGHT...East to southeast winds near 10
knots. Seas 1 to 2 feet. Wave Detail: East to southeast 1 foot at
3 seconds. Numerous showers and scattered thunderstorms.
.SUNDAY...Southeast to south winds near 10 knots. Seas 1 to 2
feet. Numerous showers and scattered thunderstorms.
.SUNDAY NIGHT...Southeast to south winds 5 to 10 knots. Seas
around 1 foot. Numerous showers and scattered thunderstorms.
.MONDAY...Southeast to south winds near 10 knots, becoming south
to southwest and increasing to 10 to 15 knots. Seas 1 to 2 feet,
building to around 2 feet. Numerous showers and scattered
thunderstorms.
.MONDAY NIGHT...South to southwest winds 10 to 15 knots,
increasing to near 15 knots. Seas around 2 feet, building to 2 to
3 feet. Numerous showers and scattered thunderstorms.
.TUESDAY AND TUESDAY NIGHT...Southwest winds 15 to 20 knots. Seas
3 to 4 feet, occasionally to 5 feet. Numerous showers and
scattered thunderstorms.
.WEDNESDAY...Southwest winds 15 to 20 knots, becoming becoming
west to northwest and decreasing to near 15 knots. Seas 3 to 5
feet, occasionally to 6 feet. Numerous showers and scattered
thunderstorms.
.WEDNESDAY NIGHT...Northwest winds 10 to 15 knots, becoming north
to northeast. Seas 5 to 7 feet, occasionally to 8 feet due to west
swell. Scattered showers and isolated thunderstorms.

$$