310
FZUS52 KKEY 310929
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
429 AM EST Fri Jan 31 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.

GMZ005-311530-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
429 AM EST Fri Jan 31 2025

.SYNOPSIS...
A surface high off the coast of the Eastern Seaboard will promote
moderate to fresh breezes early Friday morning across the coastal
waters of the Florida Keys. As this high is pushed east into the
western North Atlantic, breezes will slacken throughout Friday
night and Saturday. Breezes will then shift to the northeast to
east as a deep layer trough migrates northeast through the Ohio
River Valley. High pressure will once again build in over the
Eastern Seaboard by the start of the work week allowing breezes to
gradually freshen and veer back to the east.

The Approximate Shoreward Edge of the Gulf Stream as of January 28...

15 NM South of Dry Tortugas Light...on Loggerhead Key.
 8 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
 4 NM South of Sand Key Light...off Key West.
13 NM South of Looe Key...off Big Pine Key
13 NM South of Sombrero Key Light...off Marathon.
15 NM Southeast of Alligator Reef Light...off Islamorada.
 9 NM Southeast of Molasses Reef Light...off Key Largo.
 3 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.

$$

GMZ031-311530-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
429 AM EST Fri Jan 31 2025

.TODAY...East to southeast winds 10 to 15 knots. Bay waters a
light to moderate chop.
.TONIGHT...East to southeast winds near 10 knots, decreasing to 5
to 10 knots. Bay waters a light chop, becoming smooth to a light
chop.
.SATURDAY...East to southeast winds near 5 knots. Bay waters
smooth.
.SATURDAY NIGHT...Northeast to east winds 5 to 10 knots,
increasing to near 10 knots. Bay waters smooth to a light chop,
becoming a light chop.
.SUNDAY...Northeast to east winds near 10 knots. Bay waters a
light chop.
.SUNDAY NIGHT...Northeast to east winds near 10 knots. Bay waters
a light chop.
.MONDAY...East winds near 10 knots. Bay waters a light chop.
.MONDAY NIGHT AND TUESDAY...Northeast to east winds near 10
knots. Bay waters a light chop.
.TUESDAY NIGHT...Northeast to east winds 10 to 15 knots. Bay
waters a light to moderate chop.

$$

GMZ032-035-311530-
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-
429 AM EST Fri Jan 31 2025

.TODAY...East to southeast winds 10 to 15 knots. Seas 1 to 2
feet. Nearshore waters a light to moderate chop.
.TONIGHT...East to southeast winds near 10 knots, decreasing to 5
to 10 knots. Seas around 1 foot. Nearshore waters a light chop,
becoming smooth to a light chop.
.SATURDAY...East winds near 5 knots. Seas 1 foot or less.
Nearshore waters smooth.
.SATURDAY NIGHT...Northeast to east winds 5 to 10 knots. Seas
around 1 foot. Nearshore waters smooth to a light chop.
.SUNDAY...Northeast to east winds near 10 knots. Seas around 1
foot. Nearshore waters a light chop.
.SUNDAY NIGHT...Northeast to east winds 10 to 15 knots. Seas 1 to
2 feet. Nearshore waters a light to moderate chop.
.MONDAY THROUGH TUESDAY...Northeast to east winds near 10 knots.
Seas 1 to 2 feet. Nearshore waters a light chop.
.TUESDAY NIGHT...Northeast to east winds 10 to 15 knots. Seas
around 1 foot. Nearshore waters a light to moderate chop.

$$

GMZ042>044-311530-
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-
429 AM EST Fri Jan 31 2025

...SMALL CRAFT SHOULD EXERCISE CAUTION UNTIL WINDS DECREASE...

.TODAY...East to southeast winds 15 to 20 knots early, decreasing
to near 15 knots. Seas 2 to 4 feet, occasionally to 5 feet.
Nearshore waters choppy, becoming a moderate chop.
.TONIGHT...East to southeast winds near 10 knots, decreasing to 5
to 10 knots. Seas 2 to 3 feet. Nearshore waters a light chop,
becoming smooth to a light chop.
.SATURDAY...East to southeast winds 5 to 10 knots. Seas 1 to 2
feet. Nearshore waters smooth to a light chop.
.SATURDAY NIGHT...Northeast to east winds increasing to near 10
knots. Seas 1 to 2 feet. Nearshore waters becoming a light chop.
.SUNDAY...Northeast to east winds 10 to 15 knots. Seas around 2
feet. Nearshore waters a light to moderate chop.
.SUNDAY NIGHT...Northeast to east winds 10 to 15 knots. Seas 2 to
3 feet. Nearshore waters a light to moderate chop.
.MONDAY THROUGH TUESDAY...East winds 10 to 15 knots. Seas 2 to 3
feet. Nearshore waters a light to moderate chop.
.TUESDAY NIGHT...Northeast to east winds near 15 knots. Seas 2 to
4 feet. Nearshore waters a moderate chop.

$$

GMZ052>055-072>075-311530-
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-
429 AM EST Fri Jan 31 2025

...SMALL CRAFT SHOULD EXERCISE CAUTION UNTIL WINDS DECREASE...

.TODAY...East to southeast winds 15 to 20 knots, decreasing to
near 15 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave
Detail: East to southeast 5 feet at 6 seconds.
.TONIGHT...East to southeast winds 10 to 15 knots, decreasing to
near 10 knots. Seas subsiding to 2 to 4 feet, occasionally to 5
feet. Wave Detail: East to southeast 4 feet at 6 seconds.
.SATURDAY...East winds near 10 knots. Seas 2 to 3 feet. Wave
Detail: East to southeast 2 feet at 5 seconds.
.SATURDAY NIGHT...Northeast to east winds 10 to 15 knots. Seas
2 to 3 feet. Isolated showers.
.SUNDAY...Northeast to east winds 10 to 15 knots. Seas 2 to 4
feet. Isolated showers.
.SUNDAY NIGHT...East winds near 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Isolated showers.
.MONDAY THROUGH TUESDAY...East winds near 15 knots. Seas 3 to 4
feet, occasionally to 5 feet.
.TUESDAY NIGHT...East winds 15 to 20 knots. Seas 3 to 4 feet,
occasionally to 5 feet.

$$

GMZ033-034-311530-
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-
429 AM EST Fri Jan 31 2025

.TODAY...Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 3 feet at 4 seconds.
.TONIGHT...East to southeast winds near 10 knots, decreasing to 5
to 10 knots. Seas 1 to 2 feet. Wave Detail: East to southeast 2
feet at 4 seconds.
.SATURDAY...East to southeast winds near 5 knots, becoming
northeast to east 5 to 10 knots. Seas around 1 foot. Wave Detail:
Southeast 1 foot at 3 seconds.
.SATURDAY NIGHT...Northeast winds 5 to 10 knots. Seas around 1
foot.
.SUNDAY...Northeast to east winds near 10 knots. Seas 1 to 2
feet.
.SUNDAY NIGHT...Northeast to east winds 10 to 15 knots. Seas
around 2 feet.
.MONDAY THROUGH TUESDAY...East winds 10 to 15 knots. Seas 1 to 2
feet.
.TUESDAY NIGHT...Northeast to east winds near 15 knots. Seas 1 to
3 feet.

$$

JAM