351
FZUS52 KKEY 110824
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
424 AM EDT Sat Jul 11 2026

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.

GMZ005-112030-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
424 AM EDT Sat Jul 11 2026

.SYNOPSIS...
Gentle to moderate east to southeast breezes will prevail
throughout the weekend and into next week as high pressure remains
in place across Atlantic. Wind speeds will typically peak in the
evenings and decrease slightly during the afternoon hours. In
addition, while some brief shower activity may occur on Saturday,
mainly the first half of the day, much drier air associated with
the next round of Saharan dust will build into the region. This
will maintain rain-free conditions through at least early week
next week.

The Approximate Shoreward Edge of the Gulf Stream as of July 5...

51 NM Southeast of Dry Tortugas Light...on Loggerhead Key.
15 NM Southeast of Cosgrove Shoal Light...off the Marquesas Keys.
 6 NM South of Sand Key Light...off Key West.
 6 NM South of Looe Key...off Big Pine Key.
 6 NM Southeast of Sombrero Key Light...off Marathon.
 7 NM Southeast of Alligator Reef Light...off Islamorada.
 6 NM Southeast of Molasses Reef Light...off Key Largo.
 4 NM Southeast of Carysfort Reef Light...off Ocean Reef.

Gulf Stream Information Courtesy of the National Weather Service in
Key West, using data from RTOFS and NASA SPoRT SST.

$$

GMZ031-112030-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
424 AM EDT Sat Jul 11 2026

.TODAY...East to southeast winds near 10 knots. Bay waters a
light chop. A slight chance of showers and thunderstorms.
.TONIGHT...East winds near 10 knots. Bay waters a light chop.
.SUNDAY...East to southeast winds near 10 knots. Bay waters a
light chop.
.SUNDAY NIGHT AND MONDAY...East to southeast winds 5 to 10 knots.
Bay waters smooth to a light chop.
.MONDAY NIGHT AND TUESDAY...East to southeast winds 5 to 10
knots. Bay waters smooth to a light chop.
.TUESDAY NIGHT...East winds 10 to 15 knots. Bay waters a light
to moderate chop.
.WEDNESDAY...East to southeast winds near 10 knots. Bay waters a
light chop. A slight chance of showers.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Bay waters smooth to
a light chop.

$$

GMZ032-035-112030-
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-
424 AM EDT Sat Jul 11 2026

.TODAY...East to southeast winds 10 to 15 knots. Seas 1 to
2 feet. Nearshore waters a light to moderate chop. A slight
chance of showers and thunderstorms.
.TONIGHT...East to southeast winds 10 to 15 knots. Seas 1 to 2
feet. Nearshore waters a light to moderate chop.
.SUNDAY AND SUNDAY NIGHT...East to southeast winds near 10 knots.
Seas around 1 foot. Nearshore waters a light chop.
.MONDAY...East to southeast winds 5 to 10 knots. Seas 1 foot or
less. Nearshore waters smooth to a light chop.
.MONDAY NIGHT AND TUESDAY...East to southeast winds 5 to 10
knots. Seas around 1 foot. Nearshore waters smooth to a light
chop.
.TUESDAY NIGHT...East winds 10 to 15 knots. Seas 1 to 2 feet.
Nearshore waters a light to moderate chop.
.WEDNESDAY...East winds near 10 knots. Seas around 1 foot.
Nearshore waters a light chop. A slight chance of showers.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas around 1 foot.
Nearshore waters smooth to a light chop.

$$

GMZ042>044-112030-
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-
424 AM EDT Sat Jul 11 2026

.TODAY...East to southeast winds 10 to 15 knots. Seas 2 to
3 feet. Nearshore waters a light to moderate chop. A slight
chance of showers and thunderstorms.
.TONIGHT...East to southeast winds 10 to 15 knots. Seas 2 to
3 feet. Nearshore waters a light to moderate chop.
.SUNDAY...East to southeast winds near 10 knots. Seas 2 to
3 feet. Nearshore waters a light to moderate chop.
.SUNDAY NIGHT...East to southeast winds near 10 knots. Seas
decreasing to 1 to 2 feet. Nearshore waters a light chop.
.MONDAY...East to southeast winds 5 to 10 knots. Seas 1 to
2 feet. Nearshore waters smooth to a light chop.
.MONDAY NIGHT...East to southeast winds near 10 knots. Seas 1 to
2 feet. Nearshore waters a light chop.
.TUESDAY...East winds near 10 knots. Seas 1 to 2 feet. Nearshore
waters a light chop.
.TUESDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.
Nearshore waters a light to moderate chop.
.WEDNESDAY AND WEDNESDAY NIGHT...East winds near 10 knots. Seas 1
to 2 feet. Nearshore waters a light chop.

$$

GMZ052>055-072>075-112030-
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-
424 AM EDT Sat Jul 11 2026

.TODAY...East to southeast winds 10 to 15 knots. Seas 2 to
3 feet. Wave Detail: East to southeast 3 feet at 5 seconds. A
slight chance of showers and thunderstorms.
.TONIGHT...East winds 10 to 15 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Wave Detail: East 3 feet at 5 seconds.
.SUNDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: East 3 feet at 5 seconds.
.SUNDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.
.MONDAY...East to southeast winds near 10 knots. Seas 2 to
3 feet.
.MONDAY NIGHT AND TUESDAY...East winds 10 to 15 knots. Seas 2 to
3 feet.
.TUESDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 4 feet.
.WEDNESDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. A
slight chance of showers.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.

$$

GMZ033-034-112030-
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-
424 AM EDT Sat Jul 11 2026

.TODAY...East to southeast winds near 10 knots. Seas 1 to 2 feet.
Wave Detail: Southeast 2 feet at 4 seconds. A slight chance of
showers and thunderstorms.
.TONIGHT...East to southeast winds near 10 knots. Seas 1 to
2 feet. Wave Detail: East 2 feet at 4 seconds.
.SUNDAY...East winds 5 to 10 knots. Seas around 1 foot. Wave
Detail: East 2 feet at 4 seconds.
.SUNDAY NIGHT...East to southeast winds 5 to 10 knots. Seas around
1 foot.
.MONDAY...East to southeast winds 5 to 10 knots. Seas around 1
foot.
.MONDAY NIGHT...East winds 5 to 10 knots. Seas around 1 foot.
.TUESDAY...East to southeast winds 5 to 10 knots. Seas around 1
foot.
.TUESDAY NIGHT THROUGH WEDNESDAY NIGHT...East winds 5 to 10
knots. Seas around 1 foot.

$$