089
FZUS52 KKEY 211537
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
1037 AM EST Fri Feb 21 2025

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.

GMZ005-212145-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1037 AM EST Fri Feb 21 2025

.SYNOPSIS...Fresh to occasionally strong northeasterly breezes
will continue across most of the forecast area through tonight.
Strong surface high pressure will traverse across the eastern
United States Saturday and Saturday night, maintaining moderate to
fresh easterly breezes. As the high moves offshore into the
western North Atlantic, another weaker high will takes it place
across the Southeastern United States resulting in slackening
breezes. An area of weak low pressure is expected to develop over
the northwestern Gulf Sunday and Sunday night. As the low moves
east, the potential exists for varying breezes, especially Monday
with northwest to north breezes anticipated Monday night through
Tuesday night.

The Approximate Shoreward Edge of the Gulf Stream as of February
19...

22 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.
 6 NM South of Looe Key...off Big Pine Key.
 7 NM South of Sombrero Key Light...off Marathon.
 7 NM Southeast of Alligator Reef Light...off Islamorada.
 3 NM Southeast of Molasses Reef Light...off Key Largo.
 1 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 the Real Time Ocean Forecast System and
NASA SPoRT.

$$

GMZ031-212145-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
1037 AM EST Fri Feb 21 2025

...SMALL CRAFT ADVISORY IN EFFECT...

.THIS AFTERNOON...North to northeast winds near 20 knots,
becoming northeast. Bay waters rough.
.TONIGHT...Northeast to east winds near 20 knots. Bay waters
rough. Isolated showers.
.SATURDAY...Northeast to east winds 15 to 20 knots. Bay waters
choppy. Isolated showers.
.SATURDAY NIGHT...Northeast to east winds near 15 knots, becoming
east and decreasing to 10 to 15 knots. Bay waters a moderate
chop, becoming a light to moderate chop. Isolated showers.
.SUNDAY...East winds near 10 knots. Bay waters a light chop.
Isolated showers.
.SUNDAY NIGHT...East to southeast winds near 10 knots. Bay waters
a light chop. Scattered showers.
.MONDAY...Southeast to south winds near 10 knots, becoming
southwest to west and decreasing to 5 to 10 knots. Bay waters a
light chop, becoming smooth to a light chop. Scattered showers and
isolated thunderstorms.
.MONDAY NIGHT...West to northwest winds 5 to 10 knots, becoming
northwest and increasing to near 10 knots. Bay waters smooth to a
light chop, becoming a light chop. Scattered showers.
.TUESDAY...Northwest winds near 10 knots. Bay waters a light
chop. Isolated showers.
.TUESDAY NIGHT...Northwest winds 10 to 15 knots, becoming north
and decreasing to 5 to 10 knots. Bay waters a light to moderate
chop, becoming smooth to a light chop.

$$

GMZ032-035-212145-
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-
1037 AM EST Fri Feb 21 2025

...SMALL CRAFT ADVISORY IN EFFECT...

.THIS AFTERNOON...Northeast winds near 20 knots. Seas 2 to 4
feet, occasionally to 5 feet, except 4 to 6 feet, occasionally to
8 feet west of the Marquesas Keys. Nearshore waters rough.
.TONIGHT...Northeast to east winds near 20 knots. Seas 2 to
4 feet, occasionally to 5 feet, except 4 to 5 feet, occasionally
to 6 feet west of the Marquesas Keys. Nearshore waters rough.
Isolated showers.
.SATURDAY...Northeast to east winds near 20 knots, decreasing to 15
to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet, except 4
to 5 feet, occasionally to 6 feet west of the Marquesas Keys.
Nearshore waters rough, becoming choppy. Isolated showers.
.SATURDAY NIGHT...Northeast to east winds near 15 knots,
decreasing to 10 to 15 knots. Seas 2 to 3 feet, subsiding to 1 to
2 feet. West of the Marquesas Keys, seas 3 to 4 feet,
occasionally to 5 feet, subsiding to 2 to 3 feet. Nearshore waters
a moderate chop, becoming a light to moderate chop. Scattered
showers.
.SUNDAY...Northeast to east winds near 10 knots, becoming east and
decreasing to 5 to 10 knots. Seas 1 foot or less, except 1 to 2
feet west of the Marquesas Keys. Nearshore waters a light chop,
becoming smooth to a light chop. Scattered showers.
.SUNDAY NIGHT...East to southeast winds near 10 knots, becoming
southeast to south and decreasing to 5 to 10 knots. Seas around 1
foot. Nearshore waters a light chop, becoming smooth to a light
chop. Scattered showers.
.MONDAY...South winds 5 to 10 knots, becoming southwest to west
in the afternoon. Seas around 1 foot. Nearshore waters smooth to
a light chop. Scattered showers and isolated thunderstorms.
.MONDAY NIGHT...West to northwest winds near 5 knots, becoming
northwest and increasing to near 10 knots after midnight. Seas
around 1 foot, except building to 1 to 2 feet west of the
Marquesas Keys. Nearshore waters smooth, becoming a light chop.
Scattered showers.
.TUESDAY...Northwest to north winds 10 to 15 knots. Seas 1 to
2 feet, except 2 to 3 feet west of the Marquesas Keys. Nearshore
waters a light to moderate chop. Isolated showers.
.TUESDAY NIGHT...Northwest to north winds 10 to 15 knots, becoming
north. Seas 1 to 2 feet, except 2 to 3 feet west of the Marquesas
Keys. Nearshore waters a light to moderate chop.

$$

GMZ042>044-212145-
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-
1037 AM EST Fri Feb 21 2025

...SMALL CRAFT ADVISORY IN EFFECT...

.THIS AFTERNOON...North to northeast winds near 20 knots. Seas 2
to 4 feet, occasionally to 5 feet, except 5 to 6 feet,
occasionally to 8 feet west of Cosgrove Shoal Light. Nearshore
waters rough.
.TONIGHT...Northeast to east winds near 20 knots. Seas 3 to
5 feet, occasionally to 6 feet. Nearshore waters rough. Isolated
showers.
.SATURDAY...Northeast to 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. Isolated showers.
.SATURDAY NIGHT...Northeast to east winds 15 to 20 knots, decreasing
to 10 to 15 knots. Seas 3 to 5 feet, occasionally to 6 feet,
subsiding to 2 to 3 feet. Nearshore waters choppy, becoming a
light to moderate chop. Scattered showers.
.SUNDAY...Northeast to east winds near 10 knots. Seas around 2
feet. Nearshore waters a light chop. Scattered showers.
.SUNDAY NIGHT...East winds near 10 knots, becoming southeast.
Seas around 2 feet. Nearshore waters a light chop. Scattered
showers.
.MONDAY...Southeast to south winds 10 to 15 knots, becoming
southwest to west and decreasing to 5 to 10 knots in the
afternoon. Seas around 2 feet, subsiding to 1 to 2 feet. Nearshore
waters a light to moderate chop, becoming smooth to a light chop.
Scattered showers and isolated thunderstorms.
.MONDAY NIGHT...West to northwest winds 5 to 10 knots, becoming
northwest and increasing to near 10 knots. Seas 1 to 2 feet.
Nearshore waters smooth to a light chop, becoming a light chop.
Scattered showers.
.TUESDAY...Northwest to north winds 10 to 15 knots. Seas 1 to
2 feet, except 2 to 3 feet west of Cosgrove Shoal Light.
Nearshore waters a light to moderate chop. Isolated showers.
.TUESDAY NIGHT...Northwest to north winds 10 to 15 knots, becoming
north. Seas 1 to 2 feet, except 2 to 3 feet west of Cosgrove
Shoal Light. Nearshore waters a light to moderate chop.

$$

GMZ052>055-072>075-212145-
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-
1037 AM EST Fri Feb 21 2025

...SMALL CRAFT ADVISORY IN EFFECT...

.THIS AFTERNOON...North to northeast winds 20 to 25 knots. Seas 6
to 9 feet, occasionally to 11 feet. Wave Detail: North 7 feet at
7 seconds. Isolated showers.
.TONIGHT...Northeast to east winds 20 to 25 knots. Seas 6 to
9 feet, occasionally to 11 feet. Wave Detail: Northeast to east 8
feet at 7 seconds and northwest 3 feet at 8 seconds. Isolated
showers.
.SATURDAY...Northeast to east winds 20 to 25 knots, decreasing to 15
to 20 knots in the afternoon. Seas 5 to 8 feet, occasionally to
10 feet, subsiding to 5 to 7 feet, occasionally to 9 feet. Wave
Detail: Northeast to east 7 feet at 7 seconds and northwest 2 feet
at 7 seconds. Isolated showers.
.SATURDAY NIGHT...Northeast to east winds 15 to 20 knots,
decreasing to near 15 knots. Seas 5 to 7 feet, occasionally to 9
feet, subsiding to 3 to 5 feet, occasionally to 7 feet. Scattered
showers.
.SUNDAY...East winds 10 to 15 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Scattered showers.
.SUNDAY NIGHT...East to southeast winds 10 to 15 knots. Seas 2 to
3 feet. Scattered showers.
.MONDAY...Southeast to south winds 10 to 15 knots, becoming
southwest and decreasing to 5 to 10 knots in the afternoon. Seas
2 to 3 feet, subsiding to 1 to 2 feet. Scattered showers and
isolated thunderstorms.
.MONDAY NIGHT...Northwest winds 5 to 10 knots, increasing to near
10 knots. Seas 1 to 3 feet. Scattered showers and isolated
thunderstorms.
.TUESDAY...Northwest to north winds 10 to 15 knots. Seas 2 to
3 feet. Isolated showers.
.TUESDAY NIGHT...Northwest to north winds 10 to 15 knots, becoming
north. Seas 2 to 3 feet. Isolated showers.

$$

GMZ033-034-212145-
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-
1037 AM EST Fri Feb 21 2025

...SMALL CRAFT ADVISORY IN EFFECT...

.THIS AFTERNOON...North to northeast winds 20 to 25 knots,
becoming northeast and briefly decreasing to 15 to 20 knots. Seas
5 to 7 feet, occasionally to 9 feet. Wave Detail: North 5 feet at
6 seconds.
.TONIGHT...Northeast winds near 20 knots. Seas 4 to 5 feet,
occasionally to 6 feet. Wave Detail: Northeast to east 4 feet at 5
seconds and northwest to north 3 feet at 7 seconds.
.SATURDAY...Northeast to east winds near 20 knots, decreasing to 15
to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave
Detail: Northeast to east 5 feet at 5 seconds and northwest 2 feet
at 7 seconds. Scattered showers.
.SATURDAY NIGHT...Northeast to east winds near 15 knots,
decreasing to 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5
feet. Scattered showers.
.SUNDAY...Northeast winds 10 to 15 knots, becoming northeast to
east and decreasing to 5 to 10 knots in the afternoon. Seas 2 to
3 feet. Scattered showers.
.SUNDAY NIGHT...East winds 5 to 10 knots, decreasing to near 5
knots. Seas 1 to 2 feet, subsiding to around 1 foot. Scattered
showers.
.MONDAY...Northeast to east winds 5 to 10 knots, becoming
northwest and increasing to 10 to 15 knots in the afternoon. Seas
1 to 2 feet, building to 1 to 3 feet. Scattered showers and
isolated thunderstorms.
.MONDAY NIGHT...Northwest to north winds near 10 knots. Seas 2 to
3 feet. Isolated showers.
.TUESDAY...North winds 10 to 15 knots. Seas 2 to 3 feet.
.TUESDAY NIGHT...North winds near 15 knots. Seas 2 to 3 feet.

$$

DP/MJV