Coastal Waters Forecast
Issued by NWS Key West, FL

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FZUS52 KKEY 272028
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
428 PM EDT Wed Mar 27 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.

GMZ005-280230-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
428 PM EDT Wed Mar 27 2024

.SYNOPSIS...Moderate southeast breezes tonight will veer to the
south and southwest tonight through tomorrow morning as a cold
front approaches, and moves through the forecast area. The cold
front will also bring mix of shower and thunderstorm activity
during the overnight hours tonight, and which will taper off by
tomorrow afternoon. Freshening west to northwest breezes are
expected behind the front, and a brief blast of strong breezes is
forecast for Thursday night. Breezes will begin to veer back to
the east and decrease Friday night through Saturday, and moderate
east to southeast breezes will prevail through Monday night.

The Approximate Shoreward Edge of the Gulf Stream is currently
unavailable.

$$

GMZ031-280230-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
428 PM EDT Wed Mar 27 2024

.TONIGHT...Southeast winds 10 to 15 knots, becoming southeast to
south after midnight. Bay waters a light to moderate chop. Isolated
showers and thunderstorms after midnight.
.THURSDAY...South to southwest winds near 15 knots, becoming west
15 to 20 knots in the afternoon. Bay waters a moderate chop,
becoming choppy. Scattered showers and isolated thunderstorms in
the morning, then isolated showers in the afternoon.
.THURSDAY NIGHT...West to northwest winds near 20 knots, becoming
north. Bay waters rough.
.FRIDAY...North to northeast winds near 20 knots, decreasing to 15
to 20 knots. Bay waters rough, becoming choppy.
.FRIDAY NIGHT...Northeast to east winds near 15 knots. Bay waters
a moderate chop.
.SATURDAY...East winds 10 to 15 knots. Bay waters a light to
moderate chop.
.SATURDAY NIGHT...East winds 10 to 15 knots. Bay waters a light
to moderate chop.
.SUNDAY...East to southeast winds 10 to 15 knots. Bay waters a
light to moderate chop.
.SUNDAY NIGHT...East to southeast winds near 10 knots. Bay waters
a light chop.
.MONDAY...Southeast winds near 10 knots. Bay waters a light chop.
.MONDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters a
light to moderate chop.

$$

GMZ032-035-280230-
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-
428 PM EDT Wed Mar 27 2024

.TONIGHT...Southeast winds 10 to 15 knots, becoming southeast to
south near 15 knots late. Seas 1 to 2 feet. Nearshore waters a
light to moderate chop, becoming a moderate chop. Isolated
showers and thunderstorms after midnight.
.THURSDAY...South to southwest winds 15 to 20 knots, becoming west
near 20 knots in the afternoon. Seas 1 to 2 feet, building to 2 to
4 feet. Nearshore waters choppy, becoming rough. Scattered
showers and isolated thunderstorms in the morning, then isolated
showers in the afternoon.
.THURSDAY NIGHT...West to northwest winds 20 to 25 knots. Seas 3
to 5 feet, except 6 to 8 feet west of the Marquesas Keys. Nearshore
waters very rough.
.FRIDAY...North to northeast winds near 20 knots, decreasing to 15
to 20 knots in the afternoon. Seas 3 to 5 feet, except 4 to 6
feet west of the Marquesas Keys. Nearshore waters rough, becoming
choppy.
.FRIDAY NIGHT...Northeast to east winds near 15 knots. Seas 2 to
3 feet. Nearshore waters a moderate chop.
.SATURDAY...East winds near 15 knots. Seas 2 to 3 feet, except
3 to 5 feet west of the Marquesas Keys. Nearshore waters a
moderate chop.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas 1 to 2 feet.
Nearshore waters a light to moderate chop.
.SUNDAY...East winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore
waters a light to moderate chop.
.SUNDAY NIGHT...East to southeast winds 10 to 15 knots. Seas 1 to
2 feet. Nearshore waters a light to moderate chop.
.MONDAY...East to southeast winds 10 to 15 knots. Seas around
1 foot. Nearshore waters a light to moderate chop.
.MONDAY NIGHT...Southeast winds 10 to 15 knots. Seas 1 to 2 feet.
Nearshore waters a light to moderate chop.

$$

GMZ042>044-280230-
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-
428 PM EDT Wed Mar 27 2024

.TONIGHT...Southeast to south winds 10 to 15 knots, becoming south near
15 knots. Seas 2 to 3 feet. Nearshore waters a light to moderate
chop, becoming moderate chop. Isolated showers and thunderstorms
after midnight.
.THURSDAY...South to southwest winds 15 to 20 knots, becoming west
near 20 knots in the afternoon. Seas 2 to 3 feet. West of Cosgrove
Shoal Light, seas 2 to 3 feet, building to 3 to 5 feet in the
afternoon. Nearshore waters choppy, becoming rough. Scattered
showers and isolated thunderstorms in the morning, then isolated
showers in the afternoon.
.THURSDAY NIGHT...West to northwest winds 20 to 25 knots. Seas 2
to 4 feet, except 4 to 7 feet west of Cosgrove Shoal Light.
Nearshore waters very rough.
.FRIDAY...Northeast winds near 20 knots. Seas 2 to 3 feet, except
4 to 6 feet west of Cosgrove Shoal Light. Nearshore waters
rough.
.FRIDAY NIGHT...Northeast to east winds 15 to 20 knots. Seas 2 to
3 feet. Nearshore waters choppy.
.SATURDAY...East winds near 15 knots. Seas 2 to 3 feet. Nearshore
waters a moderate chop.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.
Nearshore waters a light to moderate chop.
.SUNDAY THROUGH MONDAY NIGHT...East to southeast winds 10 to 15
knots. Seas 2 to 3 feet. Nearshore waters a light to moderate
chop.

$$

GMZ052>055-072>075-280230-
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-
428 PM EDT Wed Mar 27 2024

.TONIGHT...Southeast to south winds near 15 knots, becoming south
late. Seas 2 to 4 feet. Isolated showers and thunderstorms after
midnight.
.THURSDAY...South to southwest winds 15 to 20 knots, becoming
west to northwest near 20 knots in the afternoon. Seas 2 to 3
feet, building to 3 to 5 feet. Isolated thunderstorms. Scattered
showers, mainly in the morning.
.THURSDAY NIGHT...Northwest to north winds 20 to 25 knots. Seas 5
to 7 feet. Isolated showers.
.FRIDAY...North to northeast winds near 20 knots. Seas 5 to 8
feet.
.FRIDAY NIGHT...Northeast to east winds 15 to 20 knots. Seas
subsiding to 4 to 6 feet.
.SATURDAY...East winds 15 to 20 knots. Seas 3 to 5 feet.
.SATURDAY NIGHT...East winds near 15 knots. Seas 3 to 5 feet.
.SUNDAY...East winds near 15 knots. Seas 2 to 4 feet.
.SUNDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 4 feet.
.MONDAY AND MONDAY NIGHT...East to southeast winds 10 to 15
knots. Seas 2 to 4 feet.

$$

GMZ033-034-280230-
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-
428 PM EDT Wed Mar 27 2024

.TONIGHT...Southeast to south winds near 15 knots, becoming south
late. Seas 2 to 3 feet. Isolated showers this evening, then
scattered showers and isolated thunderstorms after midnight.
.THURSDAY...South to southwest winds 15 to 20 knots, becoming
west to northwest and increasing to 20 to 25 knots in the
afternoon. Seas 2 to 4 feet, building to 5 to 7 feet. Scattered
showers and isolated thunderstorms in the morning, then isolated
showers in the afternoon.
.THURSDAY NIGHT...North winds near 25 knots. Seas 7 to 9 feet.
.FRIDAY...Northeast winds near 20 knots, decreasing to 15 to 20
knots in the afternoon. Seas 4 to 6 feet.
.FRIDAY NIGHT...Northeast to east winds near 15 knots. Seas 2 to
4 feet.
.SATURDAY...East winds near 15 knots. Seas 2 to 3 feet.
.SATURDAY NIGHT...East to southeast winds near 15 knots. Seas 2
to 3 feet.
.SUNDAY...East to southeast winds 10 to 15 knots. Seas 2 to
3 feet.
.SUNDAY NIGHT...East to southeast winds 10 to 15 knots. Seas 1 to
2 feet.
.MONDAY...Southeast winds 10 to 15 knots. Seas 1 to 2 feet.
.MONDAY NIGHT...Southeast winds 10 to 15 knots. Seas 1 to 3 feet.

$$


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