925
FZUS52 KKEY 110817
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
417 AM EDT Mon May 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
417 AM EDT Mon May 11 2026

.SYNOPSIS...Gentle southeasterly breezes will begin to slacken
today while a weak frontal boundary moves into the northern Gulf.
Dry layers of air above the surface will keep shower chances low
through tonight, though the front may be able to bring a plume of
moisture and increased rain chances as early as Tuesday. Periods
of variable winds are expected during the week, and there is high
confidence that breezes will remain light throughout the week.

The Approximate Shoreward Edge of the Gulf Stream as of May 05...

23 NM South of Dry Tortugas Light...on Loggerhead Key.
13 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
12 NM South of Sand Key Light...off Key West.
14 NM South of Looe Key...off Big Pine Key.
14 NM Southeast of Sombrero Key Light...off Marathon.
10 NM Southeast of Alligator Reef Light...off Islamorada.
 8 NM Southeast of Molasses Reef Light...off Key Largo.
 7 NM Southeast of Carysfort Reef Light...off Ocean Reef.

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

$$

GMZ031-112030-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
417 AM EDT Mon May 11 2026

.TODAY...Southeast winds near 10 knots, decreasing to 5 to 10
knots. Bay waters a light chop, becoming smooth to a light chop.
A slight chance of showers and thunderstorms.
.TONIGHT...Variable winds near 5 knots. Bay waters smooth. A
slight chance of showers and thunderstorms.
.TUESDAY...East to southeast winds near 5 knots. Bay waters
smooth. A chance of showers with a slight chance of
thunderstorms.
.TUESDAY NIGHT...North to northeast winds 5 to 10 knots. Bay
waters smooth to a light chop. A chance of showers with a slight
chance of thunderstorms.
.WEDNESDAY...East to southeast winds near 5 knots. Bay waters
smooth. A chance of showers with a slight chance of
thunderstorms.
.WEDNESDAY NIGHT...North to northeast winds near 5 knots. Bay
waters smooth. A chance of showers with a slight chance of
thunderstorms.
.THURSDAY...West to northwest winds near 5 knots. Bay waters
smooth. A slight chance of showers and thunderstorms.
.THURSDAY NIGHT...Northwest winds 5 to 10 knots. Bay waters
smooth to a light chop.
.FRIDAY...Northwest to north winds near 5 knots, becoming
southeast to south. Bay waters smooth.
.FRIDAY NIGHT...East to southeast 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-
417 AM EDT Mon May 11 2026

.TODAY...Southeast winds near 10 knots, decreasing to 5 to 10
knots. Seas around 1 foot, subsiding to 1 foot or less. Nearshore
waters a light chop, becoming smooth to a light chop. A slight
chance of showers and thunderstorms.
.TONIGHT...Northeast to east winds near 5 knots. Seas 1 foot or
less. Nearshore waters smooth. A slight chance of showers and
thunderstorms.
.TUESDAY...Variable winds near 5 knots. Seas 1 foot or less.
Nearshore waters smooth. A slight chance of showers and
thunderstorms.
.TUESDAY NIGHT...North to northeast winds 5 to 10 knots. Seas 1
foot or less. Nearshore waters smooth to a light chop. A chance of
showers with a slight chance of thunderstorms.
.WEDNESDAY...Northeast to east winds near 5 knots, becoming
northwest to north. Seas 1 foot or less. Nearshore waters smooth.
A chance of showers with a slight chance of thunderstorms.
.WEDNESDAY NIGHT...Northwest to north winds near 5 knots. Seas
1 foot or less. Nearshore waters smooth. A slight chance of
showers and thunderstorms.
.THURSDAY...Northwest to north winds 5 to 10 knots. Seas 1 foot
or less. Nearshore waters smooth to a light chop. A slight chance
of showers and thunderstorms.
.THURSDAY NIGHT...Northwest to north winds 5 to 10 knots. Seas
1 foot or less. Nearshore waters smooth to a light chop.
.FRIDAY...Variable winds near 5 knots. Seas 1 foot or less.
Nearshore waters smooth.
.FRIDAY NIGHT...East winds near 5 knots. Seas 1 foot or less.
Nearshore waters smooth.

$$

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-
417 AM EDT Mon May 11 2026

.TODAY...East to southeast winds near 10 knots, decreasing to 5
to 10 knots. Seas 1 to 2 feet. Nearshore waters a light chop,
becoming smooth to a light chop. A slight chance of showers and
thunderstorms.
.TONIGHT...East winds 5 to 10 knots. Seas around 1 foot.
Nearshore waters smooth to a light chop. A slight chance of
showers and thunderstorms.
.TUESDAY...Variable winds near 5 knots. Seas around 1 foot.
Nearshore waters smooth. A slight chance of showers and
thunderstorms.
.TUESDAY NIGHT...North to northeast winds 5 to 10 knots. Seas
around 1 foot. Nearshore waters smooth to a light chop. A slight
chance of showers and thunderstorms.
.WEDNESDAY...Northeast to east winds near 5 knots. Seas 1 foot or
less. Nearshore waters smooth. A slight chance of showers and
thunderstorms.
.WEDNESDAY NIGHT...Northwest to north winds near 5 knots. Seas 1
foot or less. Nearshore waters smooth. A slight chance of showers
and thunderstorms.
.THURSDAY...Northwest winds near 5 knots. Seas 1 foot or less.
Nearshore waters smooth. A slight chance of showers and
thunderstorms.
.THURSDAY NIGHT...Northwest to north winds near 5 knots. Seas
1 foot or less. Nearshore waters smooth.
.FRIDAY...North winds near 5 knots, becoming variable. Seas 1
foot or less. Nearshore waters smooth.
.FRIDAY NIGHT...East winds near 5 knots. Seas 1 foot or less.
Nearshore waters smooth.

$$

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-
417 AM EDT Mon May 11 2026

.TODAY...East to southeast winds 10 to 15 knots, becoming
east 5 to 10 knots. Seas around 2 feet. Wave Detail: East to
southeast 2 feet at 4 seconds. A slight chance of showers and
thunderstorms.
.TONIGHT...Northeast to east winds 5 to 10 knots. Seas 1 to 2
feet. Wave Detail: East 2 feet at 4 seconds. A slight chance of
showers and thunderstorms.
.TUESDAY...Variable winds near 5 knots. Seas around 1 foot. Wave
Detail: East 1 foot at 4 seconds. A slight chance of showers and
thunderstorms.
.TUESDAY NIGHT...North to northeast winds 5 to 10 knots. Seas
around 1 foot. A slight chance of showers and thunderstorms.
.WEDNESDAY...Northeast winds near 5 knots. Seas around 1 foot. A
slight chance of showers and thunderstorms.
.WEDNESDAY NIGHT...North to northeast winds near 5 knots. Seas
around 1 foot. A slight chance of showers and thunderstorms.
.THURSDAY...Northwest to north winds near 5 knots. Seas around
1 foot. A slight chance of showers and thunderstorms.
.THURSDAY NIGHT...Northwest to north winds near 5 knots. Seas
around 1 foot.
.FRIDAY...North to northeast winds near 5 knots. Seas around 1
foot.
.FRIDAY NIGHT...East winds near 5 knots. Seas 1 to 2 feet. A
slight chance of showers.

$$

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-
417 AM EDT Mon May 11 2026

.TODAY...Southeast winds 5 to 10 knots, becoming variable near 5
knots. Seas around 1 foot. Wave Detail: Southeast 1 foot at 3
seconds.
.TONIGHT...Northeast winds near 5 knots. Seas 1 foot or less.
Wave Detail: East to southeast 1 foot at 3 seconds. A slight
chance of showers and thunderstorms.
.TUESDAY...North to northeast winds near 5 knots, becoming north.
Seas 1 foot or less. Wave Detail: Northwest to north 1 foot at 2
seconds. A slight chance of showers and thunderstorms.
.TUESDAY NIGHT...North to northeast winds 5 to 10 knots. Seas
around 1 foot. A slight chance of showers and thunderstorms.
.WEDNESDAY...Northeast winds near 5 knots, becoming northwest to
north. Seas around 1 foot. A slight chance of showers and
thunderstorms.
.WEDNESDAY NIGHT...Northwest to north winds 5 to 10 knots. Seas
around 1 foot. A slight chance of showers and thunderstorms.
.THURSDAY...Northwest to north winds 5 to 10 knots. Seas 1 to
2 feet.
.THURSDAY NIGHT...Northwest to north winds 5 to 10 knots. Seas
1 to 2 feet.
.FRIDAY...North to northeast winds 5 to 10 knots. Seas 1 to
2 feet.
.FRIDAY NIGHT...Northeast to east winds near 5 knots. Seas 1 to
2 feet.

$$

AJP