Coastal Waters Forecast
Issued by NWS Key West, FL

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FZUS52 KKEY 302023
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
423 PM EDT Thu May 30 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.

GMZ005-310230-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
423 PM EDT Thu May 30 2024

.SYNOPSIS...Light to gentle, occasionally variable breezes will
gradually become easterly overnight. High pressure currently over
the Ohio Valley will continue to dive southeastward, emerging off
the Mid- Atlantic coast over the weekend. This will result in
freshened northeast to east breezes beginning as early as Friday
night, lasting through early next week.

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.

$$

GMZ031-310230-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
423 PM EDT Thu May 30 2024

.TONIGHT...Northeast to east 5 to 10 knots, increasing to near 10
knots. Bay waters smooth to a light chop, becoming a light chop.
Isolated showers and thunderstorms.
.FRIDAY...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.
.FRIDAY NIGHT...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...Northeast to east winds near 20 knots, becoming
east and decreasing to 15 to 20 knots. Bay waters rough, becoming
choppy. Scattered showers and isolated thunderstorms.
.SUNDAY...East winds 15 to 20 knots. Bay waters choppy. Scattered
showers and isolated thunderstorms.
.SUNDAY NIGHT...East winds 15 to 20 knots, decreasing to near 15
knots. Bay waters choppy, becoming a moderate chop. Scattered
showers and isolated thunderstorms.
.MONDAY THROUGH TUESDAY NIGHT...East winds near 15 knots. Bay
waters a moderate chop. Scattered showers and isolated
thunderstorms.

$$

GMZ032-035-310230-
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-
423 PM EDT Thu May 30 2024

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

$$

GMZ042>044-310230-
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-
423 PM EDT Thu May 30 2024

.TONIGHT...East winds 5 to 10 knots, increasing to 10 to 15
knots. Seas around 1 foot, building to 1 to 2 feet. Nearshore
waters smooth to a light chop, becoming a light to moderate chop.
Isolated showers and thunderstorms.
.FRIDAY...East winds 10 to 15 knots, becoming northeast to east
and increasing to 15 to 20 knots. Seas 1 to 2 feet, building to 2
to 3 feet. Nearshore waters a light to moderate chop, becoming
choppy. Isolated showers and thunderstorms.
.FRIDAY NIGHT...Northeast to east winds near 20 knots, decreasing
to 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet.
Nearshore waters rough, becoming choppy. Isolated showers and
thunderstorms.
.SATURDAY...Northeast to east winds 15 to 20 knots, increasing to
near 20 knots. Seas 3 to 4 feet, occasionally to 6 feet.
Nearshore waters choppy, becoming rough. Isolated showers and
thunderstorms.
.SATURDAY NIGHT...Northeast to east winds near 20 knots, becoming
east and decreasing to 15 to 20 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Nearshore waters rough, becoming choppy.
Scattered showers and isolated thunderstorms.
.SUNDAY...East winds 15 to 20 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Nearshore waters choppy. Scattered showers
and isolated thunderstorms.
.SUNDAY NIGHT...East winds 15 to 20 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Nearshore waters choppy. Scattered
showers and isolated thunderstorms.
.MONDAY THROUGH TUESDAY NIGHT...East winds near 15 knots. Seas 2
to 3 feet. Nearshore waters a moderate chop. Scattered showers and
isolated thunderstorms.

$$

GMZ052>055-072>075-310230-
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-
423 PM EDT Thu May 30 2024

.TONIGHT...Northeast to east winds 10 to 15 knots. Seas building
to 1 to 3 feet. Wave Detail: Northeast to east 2 feet at 4
seconds. Isolated showers and thunderstorms.
.FRIDAY...Northeast to east winds 10 to 15 knots, increasing to
15 to 20 knots. Seas building to 2 to 4 feet, occasionally to 5
feet. Wave Detail: North to northeast 4 feet at 4 seconds.
Isolated showers and thunderstorms.
.FRIDAY NIGHT...Northeast to east winds near 20 knots. Seas
building to 4 to 6 feet, occasionally to 8 feet. Wave Detail:
Northeast to east 6 feet at 6 seconds. Isolated showers and
thunderstorms.
.SATURDAY...Northeast to east winds near 20 knots. Seas 5 to 6
feet, occasionally to 8 feet. Isolated showers and thunderstorms.
.SATURDAY NIGHT...Northeast to 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. Seas 4 to 6 feet,
occasionally to 8 feet. Scattered showers and isolated
thunderstorms.
.MONDAY THROUGH TUESDAY NIGHT...East winds 10 to 15 knots. Seas 3
to 4 feet, occasionally to 5 feet. Scattered showers and isolated
thunderstorms.

$$

GMZ033-034-310230-
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-
423 PM EDT Thu May 30 2024

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

$$

BT