Coastal Waters Forecast
Issued by NWS Key West, FL

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746
FZUS52 KKEY 311429
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
1029 AM EDT Fri May 31 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.

GMZ005-312030-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1029 AM EDT Fri May 31 2024

.SYNOPSIS...High pressure over the Ohio Valley will dive
southeastward, emerging off the Mid- Atlantic coast over the
weekend. This will result in freshened northeast to east breezes
beginning this afternoon, lasting through much of the weekend.

The Approximate Shoreward Edge of the Gulf Stream as of May 29,
2024...

55 NM South of Dry Tortugas Light...on Loggerhead Key.
41 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
30 NM South of Sand Key Light...off Key West.
41 NM South of Looe Key...off Big Pine Key.
25 NM South of Sombrero Key Light...off Marathon.
6  NM South of Alligator Reef Light...off Islamorada.
8  NM South of Molasses Reef Light...off Key Largo.

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

$$

GMZ031-312030-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
1029 AM EDT Fri May 31 2024

...SMALL CRAFT SHOULD EXERCISE CAUTION FOR INCREASING WINDS...
...SMALL CRAFT ADVISORY WILL LIKELY BE REQUIRED TONIGHT...

.THIS AFTERNOON...Northeast to east winds 10 to 15 knots,
increasing to 15 to 20 knots. Bay waters a light to moderate
chop, becoming choppy. Isolated showers and thunderstorms.
.TONIGHT...Northeast to east winds near 20 knots, decreasing to 15
to 20 knots. Bay waters rough, becoming choppy. Isolated showers
and thunderstorms.
.SATURDAY...Northeast to east winds 15 to 20 knots, increasing to
near 20 knots. Bay waters choppy, becoming rough. Isolated
showers and thunderstorms.
.SATURDAY NIGHT...East winds near 20 knots, decreasing to 15 to
20 knots. Bay waters rough, becoming choppy. Scattered showers
and isolated thunderstorms.
.SUNDAY...East winds near 15 knots, increasing to 15 to 20 knots.
Bay waters a moderate chop, becoming choppy. Scattered showers
and isolated thunderstorms.
.SUNDAY NIGHT...East winds 15 to 20 knots, decreasing to near 15
knots after midnight. Bay waters choppy, becoming a moderate
chop. Scattered showers and isolated thunderstorms.
.MONDAY AND MONDAY NIGHT...East winds near 15 knots. Bay waters a
moderate chop. Scattered showers and isolated thunderstorms.
.TUESDAY AND TUESDAY NIGHT...East winds 10 to 15 knots,
increasing to near 15 knots in the afternoon. Bay waters a light
to moderate chop. Scattered showers and isolated thunderstorms.

$$

GMZ032-035-312030-
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-
1029 AM EDT Fri May 31 2024

...SMALL CRAFT SHOULD EXERCISE CAUTION FOR INCREASING WINDS...
...SMALL CRAFT ADVISORY WILL LIKELY BE REQUIRED TONIGHT...

.THIS AFTERNOON...East winds 10 to 15 knots, increasing to 15 to
20 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate
chop, becoming choppy. Isolated showers and thunderstorms.
.TONIGHT...Northeast to east winds near 20 knots, decreasing to
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 rough,
becoming choppy. Scattered showers and isolated thunderstorms.
.SATURDAY...Northeast to east winds 15 to 20 knots, increasing to
near 20 knots. Seas 2 to 3 feet, except 3 to 4 feet, occasionally
to 5 feet west of the Marquesas Keys. Nearshore waters choppy,
becoming rough. Isolated showers and thunderstorms.
.SATURDAY NIGHT...East winds near 20 knots, decreasing to 15 to
20 knots. Seas 2 to 3 feet. Nearshore waters rough, becoming
choppy. Scattered showers and isolated thunderstorms.
.SUNDAY...East winds near 15 knots, increasing to 15 to 20 knots.
Seas 2 to 3 feet. Nearshore waters a moderate chop, becoming
choppy. Scattered showers and isolated thunderstorms.
.SUNDAY NIGHT...East winds 15 to 20 knots, decreasing to near 15
knots. Seas 2 to 3 feet. Nearshore waters choppy, becoming a
moderate chop. Scattered showers and isolated thunderstorms.
.MONDAY AND MONDAY NIGHT...East winds near 15 knots. Seas 1 to 2
feet. Nearshore waters a moderate chop. Scattered showers and
isolated thunderstorms.
.TUESDAY AND TUESDAY NIGHT...East winds 10 to 15 knots. Seas 1 to
2 feet. Nearshore waters a light to moderate chop. Scattered
showers and isolated thunderstorms.

$$

GMZ042>044-312030-
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-
1029 AM EDT Fri May 31 2024

...SMALL CRAFT SHOULD EXERCISE CAUTION FOR INCREASING WINDS...
...SMALL CRAFT ADVISORY WILL LIKELY BE REQUIRED TONIGHT...

.THIS AFTERNOON...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. Isolated showers and thunderstorms.
.TONIGHT...Northeast to east winds near 20 knots, decreasing to
15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet, except 3
to 5 feet, occasionally to 6 feet west of Cosgrove Shoal Light.
Nearshore waters rough, becoming choppy. Isolated showers and
thunderstorms.
.SATURDAY...Northeast to east winds 15 to 20 knots, increasing to
near 20 knots. Seas 2 to 4 feet, occasionally to 5 feet.
Nearshore waters choppy, becoming rough. Isolated showers and
thunderstorms.
.SATURDAY NIGHT...East winds near 20 knots, decreasing to 15 to 20
knots after midnight. Seas 3 to 4 feet, occasionally to 5 feet.
Nearshore waters rough, becoming choppy. Scattered showers and
isolated thunderstorms.
.SUNDAY...East winds near 15 knots, increasing to 15 to 20 knots.
Seas 3 to 4 feet, occasionally to 5 feet. Nearshore waters a
moderate chop, becoming choppy. Scattered showers and isolated
thunderstorms.
.SUNDAY NIGHT...East winds 15 to 20 knots, decreasing to near 15
knots. Seas 3 to 4 feet, occasionally to 5 feet. Nearshore waters
choppy, becoming a moderate chop. Scattered showers and isolated
thunderstorms.
.MONDAY AND MONDAY NIGHT...East winds near 15 knots. Seas 2 to 3
feet. Nearshore waters a moderate chop. Scattered showers and
isolated thunderstorms.
.TUESDAY AND TUESDAY NIGHT...East winds 10 to 15 knots. Seas 2 to
3 feet. Nearshore waters a light to moderate chop. Scattered
showers and isolated thunderstorms.

$$

GMZ052>055-072>075-312030-
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-
1029 AM EDT Fri May 31 2024

...SMALL CRAFT SHOULD EXERCISE CAUTION FOR INCREASING WINDS...
...SMALL CRAFT ADVISORY WILL LIKELY BE REQUIRED TONIGHT...

.THIS AFTERNOON...Northeast to east winds 10 to 15 knots,
increasing to 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5
feet. Wave Detail: Northeast to east 4 feet at 4 seconds.
Isolated showers and thunderstorms.
.TONIGHT...Northeast to east winds near 20 knots. Seas 4 to 6
feet, occasionally to 8 feet. Wave Detail: Northeast to east 5
feet at 6 seconds. Isolated showers and thunderstorms.
.SATURDAY...Northeast to east winds 15 to 20 knots, increasing to
near 20 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave
Detail: Northeast to east 5 feet at 6 seconds. Isolated showers
and thunderstorms.
.SATURDAY NIGHT...East winds near 20 knots, decreasing to 15 to
20 knots. Seas 4 to 6 feet, occasionally to 8 feet. Scattered
showers and isolated thunderstorms.
.SUNDAY...East winds 15 to 20 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Scattered showers and isolated
thunderstorms.
.SUNDAY NIGHT...East winds 15 to 20 knots, decreasing to near 15
knots. Seas 4 to 6 feet, occasionally to 8 feet. Scattered showers
and isolated thunderstorms.
.MONDAY AND MONDAY NIGHT...East winds near 15 knots. Seas 3 to 4
feet, occasionally to 5 feet. Scattered showers and isolated
thunderstorms.
.TUESDAY AND TUESDAY NIGHT...East winds 10 to 15 knots. Seas 2 to
4 feet, occasionally to 5 feet. Scattered showers and isolated
thunderstorms.

$$

GMZ033-034-312030-
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-
1029 AM EDT Fri May 31 2024

...SMALL CRAFT ADVISORY WILL LIKELY BE REQUIRED TONIGHT...

.THIS AFTERNOON...East winds 10 to 15 knots. Seas 1 to 2 feet.
Wave Detail: East 2 feet at 3 seconds and northwest to north 1
foot at 4 seconds. Scattered showers and isolated thunderstorms.
.TONIGHT...East winds near 15 knots, increasing to near 20 knots.
Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail:
East 5 feet at 4 seconds. Scattered showers and isolated
thunderstorms.
.SATURDAY...Northeast to east winds 15 to 20 knots, decreasing to
near 15 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave
Detail: Northeast to east 4 feet at 4 seconds. Scattered showers
and isolated thunderstorms.
.SATURDAY NIGHT...East winds 15 to 20 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Scattered showers and isolated
thunderstorms.
.SUNDAY...East winds 15 to 20 knots, decreasing to 10 to 15
knots. Seas 2 to 4 feet, occasionally to 5 feet. Scattered showers
and isolated thunderstorms.
.SUNDAY NIGHT...East winds 10 to 15 knots, increasing to 15 to 20
knots. Seas 2 to 4 feet, occasionally to 5 feet. Scattered
showers and isolated thunderstorms.
.MONDAY...East winds decreasing to 10 to 15 knots. Seas 2 to 3
feet. Scattered showers and isolated thunderstorms.
.MONDAY NIGHT...East winds increasing to near 15 knots. Seas 2 to
3 feet. Scattered showers and isolated thunderstorms.
.TUESDAY...East winds near 10 knots. Seas 1 to 2 feet. Scattered
showers and isolated thunderstorms.
.TUESDAY NIGHT...East winds 10 to 15 knots. Seas 1 to 2 feet.
Scattered showers and isolated thunderstorms.

$$

MJV