658
FZUS52 KKEY 150923
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
423 AM EST Sat Nov 15 2025

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.

GMZ005-152130-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
423 AM EST Sat Nov 15 2025

.SYNOPSIS...High pressure centered over the Southeast U.S. will
continue to move southward over the weekend. This will promote
gentle to moderate breezes this morning. Breezes will continue to
slacken later today as the high weakens and flattens. Due to the
weak flow, there may be a period of light and variable breezes
Sunday through Monday. Another high will traverse across the
eastern United States early next week while slowly strengthening.
This will allow for freshening northeast to east breezes through
mid week.

The Approximate Shoreward Edge of the Gulf Stream as of November 14...

54 NM South of Dry Tortugas Light...on Loggerhead Key.
23 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
19 NM South of Sand Key Light...off Key West.
17 NM South of Looe Key...off Big Pine Key.
15 NM Southeast of Sombrero Key Light...off Marathon.
 4 NM Southeast of Alligator Reef Light...off Islamorada.
 1 NM Southeast of Molasses Reef Light...off Key Largo.
 1 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.

$$

GMZ031-152130-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
423 AM EST Sat Nov 15 2025

.TODAY...North to northeast winds near 10 knots, becoming
northeast to east and decreasing to 5 to 10 knots. Bay waters a
light chop, becoming smooth to a light chop.
.TONIGHT...Northeast to east winds 5 to 10 knots, becoming
variable and decreasing to near 5 knots after midnight. Bay
waters smooth to a light chop, becoming smooth.
.SUNDAY...Variable winds near 5 knots. Bay waters smooth.
.SUNDAY NIGHT...West to northwest winds near 5 knots. Bay waters
smooth.
.MONDAY...Northwest to north winds near 5 knots, becoming variable.
Bay waters smooth.
.MONDAY NIGHT...Variable winds near 5 knots, becoming northeast.
Bay waters smooth.
.TUESDAY...Northeast winds near 5 knots, becoming east and
increasing to 5 to 10 knots. Bay waters smooth, becoming smooth
to a light chop.
.TUESDAY NIGHT...East winds near 10 knots, becoming northeast to
east. Bay waters a light chop.
.WEDNESDAY...Northeast to east winds 10 to 15 knots. Bay waters a
light to moderate chop.
.WEDNESDAY NIGHT...Northeast to east winds near 15 knots. Bay
waters a moderate chop.

$$

GMZ032-035-152130-
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-
423 AM EST Sat Nov 15 2025

.TODAY...Northeast to east winds 10 to 15 knots, decreasing to 5
to 10 knots. Seas around 1 foot, except 1 to 2 feet west of the
Marquesas Keys. Nearshore waters a light to moderate chop,
becoming smooth to a light chop.
.TONIGHT...Northeast to east winds 5 to 10 knots, decreasing to
near 5 knots. Seas 1 foot or less, except subsiding to around 1
foot west of the Marquesas Keys. Nearshore waters smooth to a
light chop, becoming smooth.
.SUNDAY...North to northeast winds near 5 knots, becoming
northwest to north. Seas 1 foot or less. Nearshore waters smooth.
.SUNDAY NIGHT...Northwest to north winds 5 to 10 knots, decreasing
to near 5 knots. Seas 1 foot or less. Nearshore waters smooth to
a light chop, becoming smooth.
.MONDAY...North to northeast winds near 5 knots, becoming variable.
Seas 1 foot or less. Nearshore waters smooth.
.MONDAY NIGHT...Variable winds near 5 knots, becoming northeast
to east and increasing to 5 to 10 knots. Seas 1 foot or less,
except building to around 1 foot west of the Marquesas Keys.
Nearshore waters smooth, becoming smooth to a light chop.
.TUESDAY...Northeast to east winds 5 to 10 knots. Seas 1 foot or
less, except around 1 foot west of the Marquesas Keys. Nearshore
waters smooth to a light chop.
.TUESDAY NIGHT...Northeast to east winds near 10 knots. Seas
around 1 foot, except 1 to 2 feet west of the Marquesas Keys.
Nearshore waters a light chop.
.WEDNESDAY...Northeast to east winds 10 to 15 knots, increasing to
near 15 knots. Seas 1 to 2 feet, except building to 2 to 3 feet
west of the Marquesas Keys. Nearshore waters a light to moderate
chop, becoming a moderate chop.
.WEDNESDAY NIGHT...Northeast to east winds 15 to 20 knots. Seas 1
to 2 feet, except 2 to 4 feet, occasionally to 5 feet west of the
Marquesas Keys. Nearshore waters choppy.

$$

GMZ042>044-152130-
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-
423 AM EST Sat Nov 15 2025

.TODAY...Northeast winds 10 to 15 knots, becoming northeast to
east and decreasing to near 10 knots. Seas around 2 feet,
subsiding to 1 to 2 feet. Nearshore waters a light to moderate
chop, becoming a light chop.
.TONIGHT...Northeast to east winds 5 to 10 knots, decreasing to
near 5 knots. Seas 1 to 2 feet, subsiding to around 1 foot.
Nearshore waters smooth to a light chop, becoming smooth.
.SUNDAY...North to northeast winds near 5 knots, becoming
northwest to north. Seas around 1 foot. Nearshore waters smooth.
.SUNDAY NIGHT...Northwest to north winds near 5 knots. Seas
1 foot or less. Nearshore waters smooth.
.MONDAY...North to northeast winds near 5 knots, becoming variable.
Seas 1 foot or less. Nearshore waters smooth.
.MONDAY NIGHT...Variable winds near 5 knots, becoming northeast to
east and increasing to 5 to 10 knots. Seas 1 foot or less,
building to around 1 foot. Nearshore waters smooth, becoming
smooth to a light chop.
.TUESDAY...Northeast to east winds 5 to 10 knots, increasing to
near 10 knots. Seas around 1 foot. Nearshore waters smooth to a
light chop, becoming a light chop.
.TUESDAY NIGHT...Northeast to east winds 10 to 15 knots. Seas 1
to 2 feet. Nearshore waters a light to moderate chop.
.WEDNESDAY...Northeast to east winds 10 to 15 knots, increasing to
near 15 knots. Seas around 2 feet, building to 2 to 3 feet.
Nearshore waters a light to moderate chop, becoming a moderate
chop.
.WEDNESDAY NIGHT...Northeast to east winds 15 to 20 knots. Seas 2
to 4 feet, occasionally to 5 feet. Nearshore waters choppy.

$$

GMZ052>055-072>075-152130-
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-
423 AM EST Sat Nov 15 2025

.TODAY...Northeast to east winds 10 to 15 knots, decreasing to
near 10 knots. Seas 2 to 3 feet. Wave Detail: Northeast to east 3
feet at 5 seconds.
.TONIGHT...Northeast to east winds near 10 knots, decreasing to 5
to 10 knots. Seas 2 to 3 feet, subsiding to 1 to 2 feet. Wave
Detail: Northeast to east 2 feet at 5 seconds.
.SUNDAY...Northeast to east winds near 5 knots, becoming north in
the afternoon. Seas 1 to 2 feet. Wave Detail: Northeast to east 1
foot at 4 seconds.
.SUNDAY NIGHT...North to northeast winds near 5 knots. Seas
1 to 2 feet.
.MONDAY...North to northeast winds 5 to 10 knots. Seas 1 to 2 feet.
.MONDAY NIGHT...Northeast to east winds 5 to 10 knots. Seas
1 to 2 feet.
.TUESDAY...Northeast to east winds 5 to 10 knots, increasing to
near 10 knots. Seas 1 to 2 feet, building to around 2 feet.
.TUESDAY NIGHT...Northeast to east winds 10 to 15 knots. Seas 2
to 3 feet.
.WEDNESDAY...East winds near 15 knots, increasing to 15 to 20
knots. Seas 2 to 4 feet, occasionally to 5 feet.
.WEDNESDAY NIGHT...East winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet.

$$

GMZ033-034-152130-
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-
423 AM EST Sat Nov 15 2025

.TODAY...Northeast to east winds 10 to 15 knots, decreasing to 5
to 10 knots this afternoon. Seas 1 to 3 feet, subsiding to 1 to 2
feet. Wave Detail: Northeast to east 2 feet at 4 seconds.
.TONIGHT...Northeast to east winds 5 to 10 knots, becoming east
after midnight. Seas 1 to 2 feet. Wave Detail: Northeast to east
1 foot at 3 seconds.
.SUNDAY...East winds near 5 knots, becoming north to northeast.
Seas around 1 foot. Wave Detail: East to southeast 1 foot at 2
seconds.
.SUNDAY NIGHT...Variable winds near 5 knots. Seas 1 foot or less.
.MONDAY...Northeast winds near 5 knots, becoming northeast to east.
Seas 1 foot or less.
.MONDAY NIGHT...Northeast to east winds 5 to 10 knots. Seas
around 1 foot.
.TUESDAY...East winds 5 to 10 knots. Seas around 1 foot.
.TUESDAY NIGHT...East winds 5 to 10 knots, increasing to 10 to 15
knots. Seas around 1 foot, building to 1 to 2 feet.
.WEDNESDAY...East winds 10 to 15 knots. Seas 1 to 3 feet.
.WEDNESDAY NIGHT...East winds 10 to 15 knots, increasing to 15 to
20 knots. Seas 1 to 3 feet, building to 2 to 4 feet, occasionally
to 5 feet.

$$

MJV