208
FZUS52 KKEY 280819
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
419 AM EDT Fri Mar 28 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.

GMZ005-281430-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
419 AM EDT Fri Mar 28 2025

.SYNOPSIS...Fresh to strong easterly breezes will continue today
and into tonight before a very gradual slackening occurs over the
weekend. From Monday onward, light to gentle breezes should
return as high pressure may be able to build back in. As for
showers, the highest chances are Saturday through Sunday with
isolated thunderstorms possible.

The Approximate Shoreward Edge of the Gulf Stream as of March
23...

71 NM South of Dry Tortugas Light...on Loggerhead Key.
42 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
29 NM South of Sand Key Light...off Key West.
21 NM South of Looe Key...off Big Pine Key.
22 NM South of Sombrero Key Light...off Marathon.
19 NM Southeast of Alligator Reef Light...off Islamorada.
20 NM Southeast of Molasses Reef Light...off Key Largo.
13 NM East of Carysfort Reef Light...off Ocean Reef.

Gulf Stream Information Courtesy of the National Weather Service
in Key West and based on products from NASA SPoRT.

$$

GMZ031-281430-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
419 AM EDT Fri Mar 28 2025

...SMALL CRAFT ADVISORY IN EFFECT...

.TODAY...East winds near 20 knots, increasing to 20 to 25 knots.
Bay waters rough, becoming very rough.
.TONIGHT...East winds 20 to 25 knots, decreasing to near 20 knots.
Bay waters very rough, becoming rough. Isolated showers.
.SATURDAY...East winds near 20 knots, decreasing to 15 to 20
knots. Bay waters rough, becoming choppy. Scattered showers and
isolated thunderstorms.
.SATURDAY NIGHT...East to southeast winds 15 to 20 knots,
decreasing to near 15 knots. Bay waters choppy, becoming a
moderate chop. Scattered showers and isolated thunderstorms.
.SUNDAY...Southeast winds 10 to 15 knots. Bay waters a light to
moderate chop. Scattered showers and isolated thunderstorms.
.SUNDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters a
light to moderate chop. Scattered showers.
.MONDAY...Southeast to south winds near 10 knots. Bay waters a
light chop. Isolated showers.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters smooth
to a light chop. Isolated showers.
.TUESDAY...East to southeast winds 5 to 10 knots. Bay waters
smooth to a light chop. Isolated showers.
.TUESDAY NIGHT...East winds 5 to 10 knots. Bay waters smooth to a
light chop.

$$

GMZ032-035-281430-
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-
419 AM EDT Fri Mar 28 2025

...SMALL CRAFT ADVISORY IN EFFECT...

.TODAY...East winds near 20 knots, increasing to 20 to 25 knots.
Seas 2 to 3 feet, except 4 to 5 feet, occasionally to 6 feet west
of the Marquesas Keys. Nearshore waters rough, becoming very
rough.
.TONIGHT...East winds 20 to 25 knots, decreasing to near 20 knots
late. Seas 2 to 3 feet, except 4 to 5 feet, occasionally to 6
feet west of the Marquesas Keys. Nearshore waters very rough,
becoming rough. Isolated showers.
.SATURDAY...East to southeast winds near 20 knots early,
decreasing to 15 to 20 knots. Seas 2 to 3 feet, except subsiding
to 3 to 4 feet, occasionally to 5 feet west of the Marquesas
Keys. Nearshore waters rough, becoming choppy. Scattered showers
and isolated thunderstorms.
.SATURDAY NIGHT...East to southeast winds 15 to 20 knots,
decreasing to near 15 knots. Seas 2 to 3 feet, except subsiding
to around 3 feet west of the Marquesas Keys. Nearshore waters
choppy, becoming a moderate chop. Scattered showers and isolated
thunderstorms.
.SUNDAY...Southeast winds decreasing to 10 to 15 knots. Seas
subsiding to 1 to 2 feet. Nearshore waters becoming a light to
moderate chop. Scattered showers and isolated thunderstorms.
.SUNDAY NIGHT...East to southeast winds 10 to 15 knots. Seas
around 1 foot. Nearshore waters a light to moderate chop.
Scattered showers.
.MONDAY...Southeast winds 5 to 10 knots. Seas around 1 foot.
Nearshore waters smooth to a light chop. Isolated showers.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 1
foot. Nearshore waters smooth to a light chop.
.TUESDAY...East to southeast winds 5 to 10 knots. Seas around 1
foot. Nearshore waters smooth to a light chop.
.TUESDAY NIGHT...East winds 5 to 10 knots. Seas around 1 foot.
Nearshore waters smooth to a light chop.

$$

GMZ042>044-281430-
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-
419 AM EDT Fri Mar 28 2025

...SMALL CRAFT ADVISORY IN EFFECT...

.TODAY...East winds near 20 knots, increasing to 20 to 25 knots.
Seas 3 to 5 feet, occasionally to 6 feet. Nearshore waters rough,
becoming very rough.
.TONIGHT...East winds 20 to 25 knots, decreasing to near 20 knots
late. Seas 4 to 6 feet, occasionally to 8 feet. Nearshore waters
very rough, becoming rough. Isolated showers.
.SATURDAY...East to southeast winds near 20 knots early,
decreasing to 15 to 20 knots. Seas subsiding to 3 to 5 feet,
occasionally to 6 feet. Nearshore waters rough, becoming choppy.
Scattered showers and isolated thunderstorms.
.SATURDAY NIGHT...East to southeast 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.
.SUNDAY...Southeast winds 10 to 15 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Nearshore waters a light to moderate
chop. Scattered showers and isolated thunderstorms.
.SUNDAY NIGHT...East to southeast winds 10 to 15 knots, decreasing
to near 10 knots. Seas subsiding to around 2 feet. Nearshore
waters a light to moderate chop, becoming a light chop. Scattered
showers.
.MONDAY...Southeast winds 5 to 10 knots. Seas 1 to 2 feet.
Nearshore waters smooth to a light chop. Isolated showers.
.MONDAY NIGHT...East to southeast winds 5 to 10 knots. Seas
around 1 foot. Nearshore waters smooth to a light chop. Isolated
showers.
.TUESDAY...East to southeast winds 5 to 10 knots. Seas around
1 foot. Nearshore waters smooth to a light chop. Isolated
showers.
.TUESDAY NIGHT...East winds 5 to 10 knots. Seas 1 to 2 feet.
Nearshore waters smooth to a light chop.

$$

GMZ052>055-072>075-281430-
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-
419 AM EDT Fri Mar 28 2025

...SMALL CRAFT ADVISORY IN EFFECT...

.TODAY...East winds near 20 knots, increasing to 20 to 25 knots.
Seas 6 to 8 feet, occasionally to 10 feet. Wave Detail: East 8
feet at 7 seconds. Isolated showers.
.TONIGHT...East winds 20 to 25 knots, decreasing to near 20 knots
late. Seas 7 to 9 feet, occasionally to 11 feet. Wave Detail:
East 9 feet at 7 seconds. Scattered showers.
.SATURDAY...East to southeast winds near 20 knots, decreasing to
15 to 20 knots. Seas subsiding to 5 to 8 feet, occasionally to 10
feet. Wave Detail: East 8 feet at 8 seconds. Scattered showers
and isolated thunderstorms.
.SATURDAY NIGHT...East to southeast winds 15 to 20 knots,
decreasing to near 15 knots. Seas 4 to 6 feet, occasionally to 8
feet. Scattered showers and isolated thunderstorms.
.SUNDAY...Southeast winds near 15 knots, decreasing to 10 to 15
knots. Seas 3 to 5 feet, occasionally to 6 feet, subsiding to 2 to
4 feet. Scattered showers and isolated thunderstorms.
.SUNDAY NIGHT...East to southeast winds 10 to 15 knots, decreasing
to near 10 knots. Seas 2 to 3 feet. Scattered showers.
.MONDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet.
Isolated showers.
.MONDAY NIGHT...East to southeast winds 5 to 10 knots. Seas 1 to
2 feet. Isolated showers.
.TUESDAY...East winds 5 to 10 knots. Seas 1 to 2 feet. Isolated
showers.
.TUESDAY NIGHT...East winds increasing to 10 to 15 knots. Seas
building to 2 to 3 feet.


$$

GMZ033-034-281430-
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-
419 AM EDT Fri Mar 28 2025

...SMALL CRAFT ADVISORY IN EFFECT...

.TODAY...East winds 15 to 20 knots, increasing to near 20 knots.
Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet
at 5 seconds.
.TONIGHT...East winds near 20 knots, decreasing to 15 to 20 knots
late. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail:
East 5 feet at 5 seconds. Isolated showers.
.SATURDAY...East to southeast winds 15 to 20 knots. Seas 3 to
5 feet, occasionally to 6 feet. Wave Detail: East to southeast
5 feet at 5 seconds. Isolated showers and thunderstorms.
.SATURDAY NIGHT...East to southeast winds decreasing to near 15
knots. Seas subsiding to 2 to 3 feet. Isolated showers and
thunderstorms.
.SUNDAY...Southeast winds 10 to 15 knots, decreasing to near 10
knots. Seas 2 to 3 feet. Isolated showers and thunderstorms.
.SUNDAY NIGHT...East to southeast winds near 10 knots. Seas 1 to
2 feet. Isolated showers.
.MONDAY...Southeast winds 5 to 10 knots. Seas around 1 foot.
.MONDAY NIGHT...East to southeast winds near 5 knots. Seas around
1 foot.
.TUESDAY...East winds near 5 knots. Seas 1 foot or less.
.TUESDAY NIGHT...East winds 5 to 10 knots. Seas around 1 foot.

$$

DP