309
FZUS52 KKEY 300834
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
434 AM EDT Mon Sep 30 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.

GMZ005-301445-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
434 AM EDT Mon Sep 30 2024

.SYNOPSIS...High pressure straddled across Florida will maintain
gentle to moderate breezes across the Florida Keys today through
Wednesday. Breezes may freshen for the Wednesday night through
Thursday night time frame as an area of low pressure moves
northwestward through the Western Caribbean into the Gulf of
Mexico. Breezes are anticipated to slacken gradually for Friday
and Friday night.

The Approximate Shoreward Edge of the Gulf Stream as of
September 26...

53 NM South of Dry Tortugas Light...on Loggerhead Key.
32 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
27 NM South of Sand Key Light...off Key West.
23 NM South of Looe Key...off Big Pine Key.
22 NM South of Sombrero Key Light...off Marathon.
11 NM Southeast of Alligator Reef Light...off Islamorada.
 7 NM Southeast of Molasses Reef Light...off Key Largo.
 6 NM East of Carysfort Reef Light...off Ocean Reef.

Gulf Stream Information Courtesy of the Naval Oceanographic
Office.

$$

GMZ031-301445-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
434 AM EDT Mon Sep 30 2024

.TODAY...East to southeast winds near 10 knots. Bay waters a
light chop. Scattered showers and isolated thunderstorms.
.TONIGHT...East to southeast winds near 10 knots. Bay waters a
light chop. Isolated showers and thunderstorms.
.TUESDAY...East to southeast winds 5 to 10 knots. Bay waters
smooth to a light chop. Isolated showers and thunderstorms.
.TUESDAY NIGHT...East to southeast winds near 10 knots. Bay
waters a light chop. Isolated showers and thunderstorms.
.WEDNESDAY...East to southeast winds near 10 knots. Bay waters a
light chop. Scattered showers and isolated thunderstorms.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Bay waters a light
to moderate chop. Scattered showers and isolated thunderstorms.
.THURSDAY...East winds near 15 knots. Bay waters a moderate chop.
Scattered showers and isolated thunderstorms.
.THURSDAY NIGHT...East to southeast winds near 15 knots. Bay
waters a moderate chop. Scattered showers and isolated
thunderstorms.
.FRIDAY...East to southeast winds 10 to 15 knots. Bay waters a
light to moderate chop. Scattered showers and isolated
thunderstorms.
.FRIDAY NIGHT...Southeast winds near 10 knots. Bay waters a light
chop. Scattered showers and isolated thunderstorms.

$$

GMZ032-035-301445-
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 Mon Sep 30 2024

.TODAY...East to southeast winds 10 to 15 knots. Seas 1 to 2 feet.
Nearshore waters a light to moderate chop. Scattered showers and
isolated thunderstorms.
.TONIGHT...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 around 1 foot. Nearshore waters a light chop.
Isolated showers and thunderstorms.
.WEDNESDAY...East to southeast winds near 10 knots. Seas around 1
foot. Nearshore waters a light chop. Scattered showers and
isolated thunderstorms.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 1 to 2 feet.
Nearshore waters a light to moderate chop. Scattered showers and
isolated thunderstorms.
.THURSDAY...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. Scattered showers and isolated thunderstorms.
.THURSDAY NIGHT...East to southeast winds 15 to 20 knots. Seas 1
to 3 feet, except around 3 feet west of the Marquesas Keys.
Nearshore waters choppy. Scattered showers and isolated
thunderstorms.
.FRIDAY...East to southeast winds near 15 knots. Seas 1 to 2
feet, except 2 to 3 feet west of the Marquesas Keys. Nearshore
waters a moderate chop. Scattered showers and isolated
thunderstorms.
.FRIDAY NIGHT...Southeast winds near 10 knots. Seas 1 to 2 feet.
Nearshore waters a light chop. Scattered showers and isolated
thunderstorms.

$$

GMZ042>044-301445-
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-
434 AM EDT Mon Sep 30 2024

.TODAY...East to southeast winds 10 to 15 knots. Seas around
2 feet, except 2 to 3 feet west of Cosgrove Shoal Light.
Nearshore waters a light to moderate chop. Scattered showers and
isolated thunderstorms.
.TONIGHT...East to southeast winds 10 to 15 knots. Seas around
2 feet, except 2 to 3 feet west of Cosgrove Shoal Light.
Nearshore waters a light to moderate chop. Isolated showers and
thunderstorms.
.TUESDAY...East to southeast winds 10 to 15 knots. Seas around
2 feet, except 2 to 3 feet west of Cosgrove Shoal Light.
Nearshore waters a light to moderate chop. Isolated showers and
thunderstorms.
.TUESDAY NIGHT...East to southeast winds near 10 knots. Seas
1 to 2 feet. Nearshore waters a light chop. Isolated showers and
thunderstorms.
.WEDNESDAY...East to southeast winds near 10 knots. Seas 1 to 2
feet. Nearshore waters a light chop. Scattered showers and
isolated thunderstorms.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas around
2 feet, except 2 to 3 feet west of Cosgrove Shoal Light.
Nearshore waters a light to moderate chop. Scattered showers and
isolated thunderstorms.
.THURSDAY...East winds near 15 knots. Seas 2 to 3 feet. Nearshore
waters a moderate chop. Numerous showers and isolated
thunderstorms.
.THURSDAY NIGHT...East to southeast winds 15 to 20 knots. Seas
2 to 3 feet, except 3 to 4 feet, occasionally to 5 feet west of
Cosgrove Shoal Light. Nearshore waters choppy. Scattered showers
and isolated thunderstorms.
.FRIDAY...East to southeast winds near 15 knots. Seas 2 to 3
feet. Nearshore waters a moderate chop. Scattered showers and
isolated thunderstorms.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots. Seas around 2
feet, except 2 to 3 feet west of Cosgrove Shoal Light. Nearshore
waters a light to moderate chop. Scattered showers and isolated
thunderstorms.

$$

GMZ052>055-072>075-301445-
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-
434 AM EDT Mon Sep 30 2024

.TODAY...East to southeast winds 10 to 15 knots. Seas 2 to
3 feet. Wave Detail: East to southeast 3 feet at 5 seconds.
Scattered showers and isolated thunderstorms.
.TONIGHT...East to southeast winds 10 to 15 knots. Seas 2 to
3 feet. Wave Detail: East 2 feet at 4 seconds. Scattered showers
and isolated thunderstorms.
.TUESDAY...East to southeast winds near 10 knots. Seas 1 to
2 feet. Wave Detail: East to southeast 2 feet at 4 seconds.
Scattered showers and isolated thunderstorms.
.TUESDAY NIGHT...East winds near 10 knots. Seas 1 to 2 feet.
Scattered showers and isolated thunderstorms.
.WEDNESDAY...East to southeast winds near 10 knots. Seas 1 to 2
feet. Scattered showers and isolated thunderstorms.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.
Scattered showers and isolated thunderstorms.
.THURSDAY...East to southeast winds near 15 knots. Seas 3 to 4
feet, occasionally to 5 feet. Numerous showers and isolated
thunderstorms.
.THURSDAY NIGHT...East to southeast winds 15 to 20 knots. Seas 4
to 5 feet, occasionally to 6 feet. Scattered showers and isolated
thunderstorms.
.FRIDAY...Southeast winds near 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Scattered showers and isolated
thunderstorms.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to 4 feet.
Scattered showers and isolated thunderstorms.

$$

GMZ033-034-301445-
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 Mon Sep 30 2024

.TODAY...East to southeast winds 10 to 15 knots. Seas 2 to 3
feet. Wave Detail: East to southeast 2 feet at 3 seconds and west
to northwest 1 foot at 5 seconds. Scattered showers and isolated
thunderstorms.
.TONIGHT...East to southeast winds 10 to 15 knots. Seas around
feet. Wave Detail: East to southeast 2 feet at 3 seconds.
Scattered showers and isolated thunderstorms.
.TUESDAY...East to southeast winds 10 to 15 knots, decreasing to
near 10 knots. Seas around 2 feet. Wave Detail: East to southeast
2 feet at 4 seconds. Scattered showers and isolated
thunderstorms.
.TUESDAY NIGHT AND WEDNESDAY...East to southeast winds near 10
knots. Seas 1 to 2 feet. Scattered showers and isolated
thunderstorms.
.WEDNESDAY NIGHT...East to southeast winds near 10 knots,
increasing to 10 to 15 knots. Seas 1 to 2 feet, building to around
2 feet. Scattered showers and isolated thunderstorms.
.THURSDAY...East to southeast winds near 15 knots. Seas 2 to 3
feet. Numerous showers and isolated thunderstorms.
.THURSDAY NIGHT...East to southeast winds 15 to 20 knots. Seas 2
to 4 feet, occasionally to 5 feet. Scattered showers and isolated
thunderstorms.
.FRIDAY...Southeast winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Numerous showers and isolated
thunderstorms.
.FRIDAY NIGHT...Southeast to south winds near 15 knots. Seas 2 to
4 feet. Scattered showers and isolated thunderstorms.

$$

CLR