HomeForecastsFlorida ForecastsWhale Harbor Channel, FL - Hwy. 1 Bridge, Windley Key Coastal Forecast

Whale Harbor Channel, FL - Hwy. 1 Bridge, Windley Key Coastal Forecast

FZUS52 KKEY 240823
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
423 AM EDT Thu Apr 24 2025

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

GMZ005-241430-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
423 AM EDT Thu Apr 24 2025

.SYNOPSIS...High pressure off the Mid-Atlantic will support freshening
easterly breezes this afternoon, peaking overnight Thursday. As
the high slowly slides eastward in the west-central North Atlantic,
breezes will modestly slacken for Friday afternoon through the
weekend, becoming moderate to occasionally fresh. A second area of
high pressure will push eastward from the Mid-Atlantic into the
western North Atlantic for early next week, helping to reinforce
the stagnant, mainly dry synoptic pattern.

The Approximate Shoreward Edge of the Gulf Stream as of April
22nd...

30 NM South of Dry Tortugas Light...on Loggerhead Key.
6 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
2 NM South of Sand Key Light...off Key West.
4 NM South of Looe Key...off Big Pine Key.
5 NM South of Sombrero Key Light...off Marathon.
7 NM Southeast of Alligator Reef Light...off Islamorada.
5 NM Southeast of Molasses Reef Light...off Key Largo.
4 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 NASA SPoRT.

$$

GMZ031-241430-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
423 AM EDT Thu Apr 24 2025

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

.TODAY...East winds near 15 knots, increasing to 15 to 20 knots.
Bay waters a moderate chop, becoming choppy. Isolated showers.
.TONIGHT...East winds near 20 knots, decreasing to 15 to 20 knots.
Bay waters rough, becoming choppy. Isolated showers and
thunderstorms.
.FRIDAY...East winds 15 to 20 knots. Bay waters choppy. Isolated
showers.
.FRIDAY NIGHT...Northeast to east winds 15 to 20 knots, decreasing
to near 15 knots. Bay waters choppy, becoming a moderate chop.
.SATURDAY...East winds near 15 knots. Bay waters a moderate chop.
.SATURDAY NIGHT...Northeast to east winds near 15 knots,
decreasing to 10 to 15 knots. Bay waters a moderate chop, becoming
a light to moderate chop.
.SUNDAY AND SUNDAY NIGHT...Northeast to east winds 10 to 15 knots.
Bay waters a light to moderate chop.
.MONDAY...Northeast to east winds 10 to 15 knots, increasing to
near 15 knots. Bay waters a light to moderate chop, becoming a
moderate chop. Isolated showers.
.MONDAY NIGHT...Northeast to east winds near 15 knots. Bay waters
a moderate chop. Isolated showers.

$$

GMZ032-035-241430-
Bayside and Gulfside from Craig Key to west end of Seven Mile
Bridge-
Gulf of America from west end of Seven Mile Bridge to Halfmoon
Shoal out to 5 Fathoms-
423 AM EDT Thu Apr 24 2025

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

.TODAY...East winds near 15 knots, increasing to 15 to 20 knots.
Seas 1 to 2 feet, building to 2 to 3 feet. West of the Marquesas
Keys, seas 2 to 3 feet, building to around 3 feet. Nearshore
waters a moderate chop, becoming choppy. Isolated showers.
.TONIGHT...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. Isolated showers and thunderstorms.
.FRIDAY...East winds 15 to 20 knots. Seas subsiding to 1 to 2
feet, except subsiding to 2 to 3 feet west of the Marquesas Keys.
Nearshore waters choppy. Isolated showers.
.FRIDAY NIGHT...Northeast to east winds 15 to 20 knots, decreasing
to near 15 knots. Seas 1 to 2 feet, except 2 to 3 feet west of
the Marquesas Keys. Nearshore waters choppy, becoming a moderate
chop. Isolated showers.
.SATURDAY...East winds near 15 knots. Seas 1 to 2 feet, except 2
to 3 feet west of the Marquesas Keys. Nearshore waters a moderate
chop.
.SATURDAY NIGHT...Northeast to east winds near 15 knots,
decreasing to 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters
a moderate chop, becoming a light to moderate chop.
.SUNDAY AND SUNDAY NIGHT...Northeast to east winds 10 to 15
knots. Seas 1 to 2 feet. Nearshore waters a light to moderate
chop.
.MONDAY...Northeast to east 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. Isolated showers.
.MONDAY NIGHT...Northeast to east winds near 15 knots. Seas 1 to
2 feet, except 2 to 3 feet west of the Marquesas Keys. Nearshore
waters a moderate chop. Isolated showers.

$$

GMZ042>044-241430-
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 AM EDT Thu Apr 24 2025

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

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

$$

GMZ052>055-072>075-241430-
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 AM EDT Thu Apr 24 2025

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

.TODAY...East winds 15 to 20 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: Northeast to east 6 feet at
6 seconds. Isolated showers.
.TONIGHT...East winds near 20 knots. Seas 5 to 7 feet,
occasionally to 9 feet. Wave Detail: Northeast to east 7 feet at 7
seconds. Scattered showers and isolated thunderstorms.
.FRIDAY...East winds 15 to 20 knots. Seas 5 to 7 feet,
occasionally to 9 feet, subsiding to 4 to 6 feet, occasionally to
8 feet. Wave Detail: East 6 feet at 7 seconds. Scattered showers.
.FRIDAY NIGHT...Northeast to east winds 15 to 20 knots. Seas 4 to
6 feet, occasionally to 8 feet. Isolated showers.
.SATURDAY...Northeast to east winds 15 to 20 knots, decreasing to
near 15 knots. Seas subsiding to 3 to 5 feet, occasionally to 6
feet. Isolated showers.
.SATURDAY NIGHT...Northeast to east winds near 15 knots,
decreasing to 10 to 15 knots. Seas subsiding to 2 to 4 feet,
occasionally to 5 feet. Isolated showers.
.SUNDAY...Northeast to east winds 10 to 15 knots. Seas 2 to
4 feet, occasionally to 5 feet.
.SUNDAY NIGHT...Northeast to east winds near 15 knots. Seas 3 to
4 feet, occasionally to 5 feet.
.MONDAY...Northeast to east winds 10 to 15 knots, increasing to
near 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Isolated
showers.
.MONDAY NIGHT...Northeast to east winds 15 to 20 knots. Seas 3 to
5 feet, occasionally to 6 feet, building to 4 to 6 feet,
occasionally to 8 feet. Isolated showers.

$$

GMZ033-034-241430-
Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM
out and beyond 5 fathoms-
Gulf of America including Dry Tortugas and Rebecca Shoal Channel-
423 AM EDT Thu Apr 24 2025

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

.TODAY...East to southeast winds near 15 knots, increasing to 15
to 20 knots. Seas 2 to 3 feet, building to 3 to 4 feet,
occasionally to 5 feet. Wave Detail: East 3 feet at 4 seconds.
.TONIGHT...East winds 15 to 20 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: East 4 feet at 5 seconds.
Scattered showers and isolated thunderstorms.
.FRIDAY...East winds 15 to 20 knots, decreasing to near 15 knots.
Seas 3 to 4 feet, occasionally to 5 feet, subsiding to 2 to 3 feet.
Wave Detail: East 4 feet at 5 seconds. Isolated showers.
.FRIDAY NIGHT...East winds near 15 knots. Seas 2 to 3 feet.
Isolated showers.
.SATURDAY...East winds near 15 knots, decreasing to 10 to 15
knots. Seas 2 to 3 feet.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas 1 to 3 feet.
.SUNDAY AND SUNDAY NIGHT...Northeast to east winds near 10 knots.
Seas 1 to 2 feet.
.MONDAY...East winds near 10 knots, increasing to 10 to 15 knots.
Seas 1 to 2 feet. Isolated showers.
.MONDAY NIGHT...East winds 10 to 15 knots, increasing to near 15
knots. Seas 2 to 3 feet. Isolated showers.

$$

BT


Don't Miss