Coastal Waters Forecast
Issued by NWS Key West, FL

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402
FZUS52 KKEY 121419
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
1019 AM EDT Wed Jun 12 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.

GMZ005-122030-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1019 AM EDT Wed Jun 12 2024

.SYNOPSIS...The pattern for the remainder the week will feature
weak high pressure over the western North Atlantic and a frontal
boundary stalled over northern Florida. However, the main weather
maker will be a large cyclonic gyre centered over Central
America. As such, mainly moderate breezes and an extended period
of unsettled weather featuring thundery squalls will persist this
afternoon through Friday night. Rain and thunder chances will
decrease gradually starting Saturday. Breezes will begin to
freshen Saturday night into Sunday.

The Approximate Shoreward Edge of the Gulf Stream as of June 12,
2024...

66 NM South of Dry Tortugas Light...on Loggerhead Key.
24 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
17 NM South of Sand Key Light...off Key West.
28 NM South of Looe Key...off Big Pine Key.
8  NM South of Sombrero Key Light...off Marathon.
4  NM South of Alligator Reef Light...off Islamorada.
2  NM South of Molasses Reef Light...off Key Largo.

Gulf Stream Information Courtesy of the National Weather Service in
Key West.

$$

GMZ031-122030-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
1019 AM EDT Wed Jun 12 2024

.THIS AFTERNOON...Southeast to south winds near 15 knots,
decreasing to 10 to 15 knots. Bay waters a moderate chop, becoming
a light to moderate chop. Numerous showers and scattered
thunderstorms.
.TONIGHT...South winds near 10 knots. Bay waters a light chop.
Numerous showers and scattered thunderstorms.
.THURSDAY...Southeast winds 10 to 15 knots. Bay waters a light to
moderate chop. Widespread showers and scattered thunderstorms.
.THURSDAY NIGHT...Southeast to south winds 10 to 15 knots,
decreasing to near 10 knots. Bay waters a light to moderate chop,
becoming a light chop. Numerous showers and scattered
thunderstorms.
.FRIDAY...Southeast to south winds near 10 knots. Bay waters
a light chop. Numerous showers and scattered thunderstorms.
.FRIDAY NIGHT...Southeast to south winds near 10 knots. Bay
waters a light chop. Scattered showers and thunderstorms.
.SATURDAY...East to southeast winds 5 to 10 knots. Bay waters
smooth to a light chop. Scattered showers and isolated
thunderstorms.
.SATURDAY NIGHT...East winds near 10 knots. Bay waters a light
chop. Scattered showers and isolated thunderstorms.
.SUNDAY...East winds 10 to 15 knots, increasing to near 15 knots.
Bay waters a light to moderate chop, becoming a moderate chop.
Scattered showers and isolated thunderstorms.
.SUNDAY NIGHT...East winds near 15 knots. Bay waters a moderate
chop. Scattered showers and isolated thunderstorms.

$$

GMZ032-035-122030-
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-
1019 AM EDT Wed Jun 12 2024

...SMALL CRAFT SHOULD EXERCISE CAUTION UNTIL WINDS DECREASE...

.THIS AFTERNOON...Southeast to south winds 15 to 20 knots,
decreasing to 10 to 15 knots. Seas 1 to 2 feet, except 2 to 3 feet
west of the Marquesas Keys. Nearshore waters choppy, becoming a
light to moderate chop. Numerous showers and scattered
thunderstorms.
.TONIGHT...South winds 10 to 15 knots. Seas 1 to 2 feet.
Nearshore waters a light to moderate chop. Numerous showers and
scattered thunderstorms.
.THURSDAY...Southeast to south winds near 15 knots, decreasing to
10 to 15 knots. Seas 1 to 2 feet, except 2 to 3 feet west of the
Marquesas Keys. Nearshore waters a moderate chop, becoming a
light to moderate chop. Widespread showers and scattered
thunderstorms.
.THURSDAY NIGHT...Southeast to south winds decreasing to near 10
knots. Seas 1 to 2 feet. Nearshore waters becoming a light chop.
Numerous showers and scattered thunderstorms.
.FRIDAY...Southeast to south winds 10 to 15 knots. Seas 1 to 2
feet. Nearshore waters a light to moderate chop. Numerous showers
and scattered thunderstorms.
.FRIDAY NIGHT...Southeast to south winds near 10 knots. Seas 1
to 2 feet, subsiding to around 1 foot. Nearshore waters a light
chop. Scattered showers and thunderstorms.
.SATURDAY...East to southeast winds 5 to 10 knots. Seas 1 foot or
less. Nearshore waters smooth to a light chop. Scattered showers
and isolated thunderstorms.
.SATURDAY NIGHT...East winds 5 to 10 knots, increasing to 10 to
15 knots. Seas 1 foot or less, building to 1 to 2 feet. Nearshore
waters smooth to a light chop, becoming a light to moderate chop.
Scattered showers and isolated thunderstorms.
.SUNDAY...East winds 10 to 15 knots, increasing to 15 to 20 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 choppy. Scattered showers and isolated thunderstorms.
.SUNDAY NIGHT...East winds 15 to 20 knots. Seas 1 to 3 feet,
except 3 to 4 feet, occasionally to 5 feet west of the Marquesas
Keys. Nearshore waters choppy. Scattered showers and isolated
thunderstorms.

$$

GMZ042>044-122030-
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-
1019 AM EDT Wed Jun 12 2024

...SMALL CRAFT SHOULD EXERCISE CAUTION UNTIL WINDS DECREASE...

.THIS AFTERNOON...Southeast to south winds 15 to 20 knots,
decreasing to 10 to 15 knots. Seas 2 to 3 feet, subsiding to
around 2 feet. Nearshore waters choppy, becoming a light to
moderate chop. Numerous showers and scattered thunderstorms.
.TONIGHT...South winds 10 to 15 knots. Seas 1 to 2 feet.
Nearshore waters a light to moderate chop. Numerous showers and
scattered thunderstorms.
.THURSDAY...Southeast winds near 15 knots. Seas 1 to 2 feet,
building to around 2 feet. Nearshore waters a moderate chop.
Numerous showers and scattered thunderstorms.
.THURSDAY NIGHT...Southeast to south winds decreasing to near 10
knots. Seas subsiding to 1 to 2 feet. Nearshore waters becoming a
light chop. Numerous showers and scattered thunderstorms.
.FRIDAY...Southeast to south winds 10 to 15 knots. Seas 1 to
2 feet. Nearshore waters a light to moderate chop. Numerous
showers and scattered thunderstorms.
.FRIDAY NIGHT...Southeast to south winds near 10 knots. Seas 1 to
2 feet. Nearshore waters a light chop. Scattered showers and
thunderstorms.
.SATURDAY...East to southeast 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. Scattered showers and isolated
thunderstorms.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas around 2 feet.
Nearshore waters a light to moderate chop. Scattered showers and
isolated thunderstorms.
.SUNDAY...East winds 10 to 15 knots, increasing to 15 to 20 knots.
Seas 2 to 3 feet. Nearshore waters a light to moderate chop,
becoming choppy in the afternoon. Scattered showers and isolated
thunderstorms.
.SUNDAY NIGHT...East winds 15 to 20 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Nearshore waters choppy. Scattered
showers and isolated thunderstorms.

$$

GMZ052>055-072>075-122030-
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-
1019 AM EDT Wed Jun 12 2024

...SMALL CRAFT SHOULD EXERCISE CAUTION UNTIL WINDS DECREASE...

.THIS AFTERNOON...Southeast to south winds 15 to 20 knots,
decreasing to 10 to 15 knots. Seas 3 to 5 feet, subsiding to 2 to
4 feet. Wave Detail: Southeast 3 feet at 4 seconds. Numerous
showers and scattered thunderstorms.
.TONIGHT...Southeast to south winds 10 to 15 knots, increasing to
near 15 knots. Seas 2 to 3 feet, building to 2 to 4 feet. Wave
Detail: Southeast 2 feet at 4 seconds. Numerous showers and
scattered thunderstorms.
.THURSDAY...Southeast winds near 15 knots, decreasing to 10 to 15
knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 4
seconds. Numerous showers and scattered thunderstorms.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to 3
feet. Numerous showers and scattered thunderstorms.
.FRIDAY...Southeast winds 10 to 15 knots. Seas 1 to 3 feet.
Numerous showers and scattered thunderstorms.
.FRIDAY NIGHT...Southeast winds near 10 knots. Seas 1 to 2 feet.
Scattered showers and thunderstorms.
.SATURDAY...East to southeast winds 5 to 10 knots, becoming east
10 to 15 knots. Seas 1 to 2 feet. building to 2 to 3 feet.
Scattered showers and isolated thunderstorms.
.SATURDAY NIGHT...East winds 10 to 15 knots, increasing to near 15
knots. Seas 2 to 4 feet. Scattered showers and isolated
thunderstorms.
.SUNDAY...East winds near 15 knots, increasing to 15 to 20 knots.
Seas 2 to 4 feet, occasionally to 5 feet, building to 3 to 5 feet.
Scattered showers and isolated thunderstorms.
.SUNDAY NIGHT...East winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Scattered showers and isolated
thunderstorms.

$$

GMZ033-034-122030-
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-
1019 AM EDT Wed Jun 12 2024

...SMALL CRAFT SHOULD EXERCISE CAUTION UNTIL WINDS DECREASE...

.THIS AFTERNOON...Southeast to south winds 15 to 20 knots,
decreasing to near 15 knots. Seas 2 to 4 feet, occasionally to 5
feet. Wave Detail: South to southwest 3 feet at 5 seconds.
Numerous showers and scattered thunderstorms.
.TONIGHT...South winds 10 to 15 knots, increasing to near 15 knots.
Seas 2 to 3 feet. Wave Detail: South to southwest 2 feet at 5
seconds and east to southeast 2 feet at 4 seconds. Widespread
showers and scattered thunderstorms.
.THURSDAY...Southeast to south winds near 15 knots. Seas 2 to 3
feet. Wave Detail: Southwest 2 feet at 5 seconds and southeast 2
feet at 4 seconds. Widespread showers and scattered thunderstorms.
.THURSDAY NIGHT...Southeast to south winds 10 to 15 knots. Seas
2 to 3 feet, subsiding to around 2 feet. Widespread showers and
scattered thunderstorms.
.FRIDAY...Southeast to south winds 10 to 15 knots. Seas around 2
feet. Widespread showers and scattered thunderstorms.
.FRIDAY NIGHT...Southeast to south winds near 10 knots. Seas 1 to
2 feet. Numerous showers and scattered thunderstorms.
.SATURDAY...Southeast to south winds 5 to 10 knots, becoming east
to southeast. Seas around 1 foot. Scattered showers and isolated
thunderstorms.
.SATURDAY NIGHT...East winds near 10 knots, increasing to 10 to
15 knots. Seas 1 to 2 feet. Scattered showers and isolated
thunderstorms.
.SUNDAY...East winds 10 to 15 knots, increasing to 15 to 20 knots
in the afternoon. Seas building to 2 to 4 feet. Scattered showers
and isolated thunderstorms.
.SUNDAY NIGHT...East winds 15 to 20 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Scattered showers and isolated
thunderstorms.

$$

BT/NB