064
FZUS52 KKEY 270834
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
434 AM EDT Fri Sep 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.

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.

GMZ005-271445-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
434 AM EDT Fri Sep 27 2024

.SYNOPSIS...Strong southerly breezes will slacken rapidly today
and tonight as Tropical Storm Helene continues to push farther
inland across the southern U.S. High pressure building back in to
the region will help breezes slacken further and shift easterly
over the weekend, and into next week.

The Approximate Shoreward Edge of the Gulf Stream as of September
24...

58 NM South of Dry Tortugas Light...on Loggerhead Key.
30 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
22 NM South of Sand Key Light...off Key West.
16 NM South of Looe Key...off Big Pine Key.
16 NM South of Sombrero Key Light...off Marathon.
 7 NM Southeast of Alligator Reef Light...off Islamorada.
 2 NM Southeast of Molasses Reef Light...off Key Largo.
 2 NM East of Carysfort Reef Light...off Ocean Reef.

Gulf Stream Information Courtesy of the Naval Oceanographic
Office.

$$

GMZ031-271445-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
434 AM EDT Fri Sep 27 2024

...SMALL CRAFT ADVISORY IN EFFECT...

.TODAY...South to southwest winds 20 to 25 knots, decreasing to
15 to 20 knots. Bay waters very rough, becoming choppy. Numerous
showers and scattered thunderstorms.
.TONIGHT...South winds near 15 knots, decreasing to 10 to 15 knots.
Bay waters a moderate chop, becoming a light to moderate chop.
Scattered showers and thunderstorms.
.SATURDAY...South winds 10 to 15 knots. Bay waters a light to
moderate chop. Scattered showers and isolated thunderstorms.
.SATURDAY NIGHT...Southeast winds near 10 knots. Bay waters
a light chop. Isolated showers and thunderstorms.
.SUNDAY...East to southeast winds near 10 knots. Bay waters a
light chop. Isolated showers and thunderstorms.
.SUNDAY NIGHT THROUGH MONDAY NIGHT...East to southeast winds near
10 knots. Bay waters a light chop. Isolated showers and
thunderstorms.
.TUESDAY AND TUESDAY NIGHT...East to southeast winds near 10
knots. Bay waters a light chop. Scattered showers and isolated
thunderstorms.

$$

GMZ032-035-271445-
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-
434 AM EDT Fri Sep 27 2024

...SMALL CRAFT ADVISORY IN EFFECT...

.TODAY...South to southwest winds 20 to 25 knots, decreasing to
15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet, except 5
to 7 feet, occasionally to 9 feet west of the Marquesas Keys.
Nearshore waters very rough, becoming choppy. Numerous showers
and scattered thunderstorms.
.TONIGHT...South winds near 15 knots, decreasing to 10 to 15
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 a moderate chop, becoming a light to moderate chop.
Scattered showers and thunderstorms.
.SATURDAY...South winds decreasing to 10 to 15 knots. Seas
subsiding to 2 to 3 feet. Nearshore waters becoming a light to
moderate chop. Scattered showers and isolated thunderstorms.
.SATURDAY NIGHT...Southeast winds near 10 knots. Seas 1 to 2
feet. Nearshore waters a light chop. Isolated showers and
thunderstorms.
.SUNDAY...Southeast winds near 10 knots. Seas around 1 foot.
Nearshore waters a light chop. Isolated showers and thunderstorms.
.SUNDAY NIGHT THROUGH MONDAY NIGHT...East to southeast winds near
10 knots. Seas around 1 foot. Nearshore waters a light chop.
Isolated showers and thunderstorms.
.TUESDAY AND TUESDAY NIGHT...East to southeast winds near 10
knots. Seas around 1 foot. Nearshore waters a light chop.
Scattered showers and isolated thunderstorms.

$$

GMZ042-271445-
Hawk Channel from Ocean Reef to Craig Key out to the reef-
434 AM EDT Fri Sep 27 2024

...SMALL CRAFT ADVISORY IN EFFECT...

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

$$

GMZ043-044-271445-
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-
434 AM EDT Fri Sep 27 2024

...SMALL CRAFT ADVISORY IN EFFECT...

.TODAY...South to southwest winds 20 to 25 knots, decreasing to
15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet, except 5
to 7 feet, occasionally to 9 feet west of Cosgrove Shoal Light.
Nearshore waters very rough, becoming choppy. Numerous showers
and scattered thunderstorms.
.TONIGHT...South winds near 15 knots, decreasing to 10 to 15 knots.
Seas 3 to 5 feet, occasionally to 6 feet. Nearshore waters a
moderate chop, becoming a light to moderate chop. Scattered
showers and thunderstorms.
.SATURDAY...South 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.
.SATURDAY NIGHT...Southeast to south winds decreasing to near 10
knots. Seas subsiding to 1 to 2 feet. Nearshore waters becoming a
light chop. Isolated showers and thunderstorms.
.SUNDAY...Southeast winds near 10 knots. Seas 1 to 2 feet.
Nearshore waters a light chop. Isolated showers and
thunderstorms.
.SUNDAY NIGHT THROUGH MONDAY NIGHT...East to southeast winds 10
to 15 knots. Seas 1 to 2 feet. Nearshore waters a light to
moderate chop. Isolated showers and thunderstorms.
.TUESDAY AND TUESDAY NIGHT...East to southeast winds near 10
knots. Seas 1 to 2 feet. Nearshore waters a light chop. Scattered
showers and isolated thunderstorms.

$$

GMZ052-053-072-073-271445-
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 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-
434 AM EDT Fri Sep 27 2024

...SMALL CRAFT ADVISORY IN EFFECT...

.TODAY...South to southwest winds 20 to 25 knots, decreasing to
15 to 20 knots. Seas 6 to 8 feet, occasionally to 10 feet,
subsiding to 4 to 6 feet, occasionally to 8 feet this afternoon.
Wave Detail: South 5 feet at 6 seconds and southwest to west 5
feet at 9 seconds, becoming southeast to south 4 feet at 6 seconds
and southwest to west 4 feet at 9 seconds. Numerous showers and
scattered thunderstorms.
.TONIGHT...South winds near 15 knots, decreasing to 10 to 15
knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: West
3 feet at 8 seconds and southeast to south 2 feet at 4 seconds.
Scattered showers and thunderstorms.
.SATURDAY...South winds 10 to 15 knots. Seas subsiding to 2 to 3
feet. Wave Detail: Southeast to south 2 feet at 4 seconds and west
2 feet at 8 seconds. Isolated showers and thunderstorms.
.SATURDAY NIGHT...Southeast winds near 10 knots. Seas 1 to 2
feet. Isolated showers and thunderstorms.
.SUNDAY...East to southeast winds near 10 knots. Seas 1 to 2
feet. Isolated showers and thunderstorms.
.SUNDAY NIGHT THROUGH MONDAY NIGHT...East to southeast winds 10
to 15 knots. Seas around 2 feet. Scattered showers and isolated
thunderstorms.
.TUESDAY AND TUESDAY NIGHT...East to southeast winds near 10
knots. Seas 1 to 2 feet. Scattered showers and isolated
thunderstorms.

$$

GMZ054-055-074-075-271445-
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 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-
434 AM EDT Fri Sep 27 2024

...SMALL CRAFT ADVISORY IN EFFECT...

.TODAY...South to southwest winds 20 to 25 knots, decreasing to
15 to 20 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave
Detail: West 6 feet at 9 seconds and southeast 3 feet at 6
seconds. Numerous showers and scattered thunderstorms.
.TONIGHT...South winds near 15 knots, decreasing to 10 to 15 knots.
Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: West to
northwest 5 feet at 9 seconds and southeast to south 3 feet at 4
seconds. Numerous showers and scattered thunderstorms.
.SATURDAY...South winds 10 to 15 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Wave Detail: Southeast to south 3 feet at
4 seconds and west 3 feet at 7 seconds. Scattered showers and
isolated thunderstorms.
.SATURDAY NIGHT...Southeast winds decreasing to near 10 knots.
Seas subsiding to 2 to 3 feet. Scattered showers and isolated
thunderstorms.
.SUNDAY...East to southeast winds near 10 knots. Seas around
2 feet. Isolated showers and thunderstorms.
.SUNDAY NIGHT THROUGH MONDAY NIGHT...East to southeast winds 10
to 15 knots. Seas 2 to 3 feet. Scattered showers and isolated
thunderstorms.
.TUESDAY AND TUESDAY NIGHT...East to southeast winds near 10
knots. Seas 1 to 3 feet. Scattered showers and isolated
thunderstorms.

$$

GMZ033-034-271445-
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-
434 AM EDT Fri Sep 27 2024

...SMALL CRAFT ADVISORY IN EFFECT...

.TODAY...South to southwest winds 20 to 25 knots, decreasing to
15 to 20 knots. Seas 6 to 8 feet, occasionally to 10 feet,
subsiding to 5 to 6 feet, occasionally to 8 feet this afternoon.
Wave Detail: West 6 feet at 9 seconds and south 5 feet at 7
seconds, becoming west to northwest 5 feet at 8 seconds and south
2 feet at 6 seconds. Widespread showers and scattered
thunderstorms.
.TONIGHT...South winds near 15 knots, decreasing to 10 to 15
knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail:
Northwest 4 feet at 8 seconds and southwest to west 3 feet at 7
seconds. Numerous showers and scattered thunderstorms.
.SATURDAY...South winds 10 to 15 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Wave Detail: West to northwest 3 feet at
7 seconds and south 2 feet at 4 seconds. Scattered showers and
isolated thunderstorms.
.SATURDAY NIGHT...Southeast to south winds near 10 knots. Seas 2
to 3 feet. Scattered showers and isolated thunderstorms.
.SUNDAY...Southeast to south winds near 10 knots. Seas 1 to 2
feet. Scattered showers and isolated thunderstorms.
.SUNDAY NIGHT THROUGH MONDAY NIGHT...East to southeast winds near
10 knots. Seas 1 to 2 feet. Isolated showers and thunderstorms.
.TUESDAY AND TUESDAY NIGHT...East to southeast winds near 10
knots. Seas 1 to 2 feet. Scattered showers and isolated
thunderstorms.

$$

DP