302
FZUS52 KKEY 260130
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
930 PM EDT Fri Jul 25 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.

GMZ005-260830-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
930 PM EDT Fri Jul 25 2025

.SYNOPSIS...A high pressure cell centered over the western North
Atlantic east of the Florida Peninsula will maintain moderate to
fresh east to southeasterly breezes across Florida Keys coastal
waters overnight. The high pressure cell will weaken slowly from
Saturday through Monday, resulting in diminishing breezes through
early next week. A dry and stable air mass associated with a
Saharan Air Layer aloft will eliminate or significantly limit
shower and thunderstorm activity from tonight through Saturday
night. A somewhat weaker pressure pattern will promote mostly
light to gentle breezes through the middle of next week.

The Approximate Shoreward Edge of the Gulf Stream as of July 22...

59 NM South of Dry Tortugas Light...on Loggerhead Key.
 4 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
 2 NM South of Sand Key Light...off Key West.
 5 NM South of Looe Key...off Big Pine Key.
 6 NM Southeast of Sombrero Key Light...off Marathon.
 9 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 based on products from NASA SPoRT.

$$

GMZ031-260830-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
930 PM EDT Fri Jul 25 2025

...SMALL CRAFT SHOULD EXERCISE CAUTION...

.OVERNIGHT...East winds 15 to 20 knots, decreasing to near 15
knots late. Bay waters choppy, becoming a moderate chop late.
.SATURDAY...East winds 10 to 15 knots. Bay waters a light to
moderate chop.
.SATURDAY NIGHT...Northeast to east winds 10 to 15 knots,
decreasing to near 10 knots. Bay waters a light to moderate chop,
becoming a light chop.
.SUNDAY...Northeast to east winds 5 to 10 knots, becoming east and
increasing to near 10 knots. Bay waters smooth to a light chop,
becoming a light chop. Isolated showers and thunderstorms.
.SUNDAY NIGHT...East winds 5 to 10 knots, decreasing to near 5
knots. Bay waters smooth to a light chop, becoming smooth.
Isolated showers and thunderstorms.
.MONDAY...Northeast to east winds near 5 knots, becoming east to
southeast and increasing to 5 to 10 knots. Bay waters smooth,
becoming smooth to a light chop. Isolated showers and
thunderstorms.
.MONDAY NIGHT...East to southeast winds 5 to 10 knots. Bay waters
smooth to a light chop. Isolated showers and thunderstorms.
.TUESDAY...Southeast winds near 5 knots. Bay waters smooth.
Isolated showers and thunderstorms.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters smooth
to a light chop. Isolated showers and thunderstorms.
.WEDNESDAY...Southeast winds near 5 knots. Bay waters smooth.
Isolated showers and thunderstorms.
.WEDNESDAY NIGHT...East to southeast winds near 5 knots. Bay
waters smooth. Scattered showers and isolated thunderstorms.

$$

GMZ032-035-260830-
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-
930 PM EDT Fri Jul 25 2025

...SMALL CRAFT SHOULD EXERCISE CAUTION...

.OVERNIGHT...East to southeast winds 15 to 20 knots, decreasing to
near 15 knots late. Seas 1 to 2 feet, except 3 to 4 feet,
occasionally to 5 feet west of the Marquesas Keys. Nearshore
waters choppy, becoming a moderate chop late.
.SATURDAY...East winds near 15 knots. Seas 1 to 2 feet, except
around 3 feet west of the Marquesas Keys. Nearshore waters a
moderate chop.
.SATURDAY NIGHT...East winds 10 to 15 knots, becoming northeast to
east. Seas 1 to 2 feet, except around 2 feet west of the
Marquesas Keys. Nearshore waters a light to moderate chop.
.SUNDAY...Northeast to east winds near 10 knots, decreasing to 5
to 10 knots. Seas 1 to 2 feet, subsiding to around 1 foot.
Nearshore waters a light chop, becoming smooth to a light chop.
Isolated showers and thunderstorms.
.SUNDAY NIGHT...East winds 5 to 10 knots, decreasing to near 5
knots. Seas around 1 foot, subsiding to 1 foot or less. Nearshore
waters smooth to a light chop, becoming smooth. Isolated showers
and thunderstorms.
.MONDAY...Northeast to east winds near 5 knots, becoming 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. Isolated showers and thunderstorms.
.MONDAY NIGHT...East to southeast winds 5 to 10 knots. Seas
around 1 foot. Nearshore waters smooth to a light chop. Isolated
showers and thunderstorms.
.TUESDAY...Southeast winds near 5 knots. Seas 1 foot or less.
Nearshore waters smooth. Isolated showers and thunderstorms.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 1 foot.
Nearshore waters smooth to a light chop. Isolated showers and
thunderstorms.
.WEDNESDAY...Southeast winds near 5 knots. Seas 1 foot or less.
Nearshore waters smooth. Isolated showers and thunderstorms.
.WEDNESDAY NIGHT...East to southeast winds 5 to 10 knots. Seas
around 1 foot. Nearshore waters smooth to a light chop. Scattered
showers and isolated thunderstorms.

$$

GMZ042>044-260830-
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-
930 PM EDT Fri Jul 25 2025

...SMALL CRAFT SHOULD EXERCISE CAUTION...

.OVERNIGHT...East to southeast winds 15 to 20 knots, decreasing
to near 15 knots late. Seas 2 to 4 feet, occasionally to 5 feet,
Nearshore waters choppy, becoming a moderate chop late.
.SATURDAY...East winds near 15 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Nearshore waters a moderate chop.
.SATURDAY NIGHT...East winds 10 to 15 knots, becoming northeast to
east. Seas 2 to 3 feet. Nearshore waters a light to moderate
chop.
.SUNDAY...Northeast to east winds near 10 knots. Seas 1 to 3 feet,
subsiding to 1 to 2 feet. Nearshore waters a light chop. Isolated
showers and thunderstorms.
.SUNDAY NIGHT...Northeast to east winds 5 to 10 knots, decreasing
to near 5 knots. Seas around 1 foot. Nearshore waters smooth to a
light chop, becoming smooth. Isolated showers and thunderstorms.
.MONDAY...Northeast to east winds near 5 knots, increasing to 5
to 10 knots. Seas around 1 foot. Nearshore waters smooth,
becoming smooth to a light chop. Isolated showers and
thunderstorms.
.MONDAY NIGHT...East to southeast winds 5 to 10 knots. Seas
around 1 foot. Nearshore waters smooth to a light chop. Isolated
showers and thunderstorms.
.TUESDAY...East to southeast winds near 5 knots. Seas around
1 foot. Nearshore waters smooth. Isolated showers and
thunderstorms.
.TUESDAY NIGHT...East to southeast winds 5 to 10 knots. Seas
around 1 foot. Nearshore waters smooth to a light chop. Isolated
showers and thunderstorms.
.WEDNESDAY...East to southeast winds near 5 knots. Seas 1 to
2 feet. Nearshore waters smooth. Isolated showers and
thunderstorms.
.WEDNESDAY NIGHT...East to southeast winds 5 to 10 knots. Seas
1 to 2 feet. Nearshore waters smooth to a light chop. Isolated
showers and thunderstorms.

$$

GMZ052>055-072>075-260830-
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-
930 PM EDT Fri Jul 25 2025

...SMALL CRAFT SHOULD EXERCISE CAUTION...

.OVERNIGHT...East winds 15 to 20 knots, becoming east to
southeast. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail:
East 6 feet at 6 seconds.
.SATURDAY...East winds near 15 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Wave Detail: East 4 feet at 6 seconds.
.SATURDAY NIGHT...Northeast to east winds near 15 knots,
decreasing to 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5
feet. Wave Detail: Northeast to east 4 feet at 5 seconds.
.SUNDAY...Northeast to east winds 10 to 15 knots. Seas 2 to 3
feet. Isolated showers and thunderstorms.
.SUNDAY NIGHT...Northeast to east winds near 10 knots, decreasing
to 5 to 10 knots. Seas around 2 feet, subsiding to 1 to 2 feet.
Isolated showers and thunderstorms.
.MONDAY...Northeast to east winds 5 to 10 knots. Seas 1 to
2 feet. Isolated showers and thunderstorms.
.MONDAY NIGHT...East winds 5 to 10 knots, becoming east to
southeast. Seas 1 to 2 feet. Isolated showers and thunderstorms.
.TUESDAY...East to southeast winds 5 to 10 knots. Seas 1 to 2 feet.
Isolated showers and thunderstorms.
.TUESDAY NIGHT...East to southeast winds 5 to 10 knots. Seas 1 to
2 feet. Isolated showers and thunderstorms.
.WEDNESDAY...East to southeast winds near 5 knots. Seas 1 to
2 feet. Isolated showers and thunderstorms.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 1 to 2 feet.
Isolated showers and thunderstorms.

$$

GMZ033-034-260830-
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-
930 PM EDT Fri Jul 25 2025

...SMALL CRAFT SHOULD EXERCISE CAUTION...

.OVERNIGHT...East to southeast winds 15 to 20 knots. Seas 2 to 4
feet, occasionally to 5 feet. Wave Detail: East to southeast 4
feet at 5 seconds.
.SATURDAY...East to southeast winds near 15 knots, decreasing to 10
to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet, subsiding
to 2 to 3 feet. Wave Detail: East 2 feet at 4 seconds.
.SATURDAY NIGHT...East winds 10 to 15 knots, becoming northeast to
east. Seas 1 to 3 feet.
.SUNDAY...Northeast to east winds near 10 knots, decreasing to 5
to 10 knots. Seas 1 to 2 feet, subsiding to around 1 foot.
Isolated showers and thunderstorms.
.SUNDAY NIGHT...Northeast winds near 5 knots. Seas around 1 foot.
Isolated showers and thunderstorms.
.MONDAY...East winds near 5 knots. Seas around 1 foot. Isolated
showers and thunderstorms.
.MONDAY NIGHT...East to southeast winds 5 to 10 knots. Seas
around 1 foot. Isolated showers and thunderstorms.
.TUESDAY...East to southeast winds near 5 knots. Seas around
1 foot. Isolated showers and thunderstorms.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
1 foot. Isolated showers and thunderstorms.
.WEDNESDAY...Southeast winds near 5 knots. Seas around 1 foot.
Isolated showers and thunderstorms.
.WEDNESDAY NIGHT...East winds near 5 knots, becoming southeast
after midnight. Seas 1 to 2 feet. Isolated showers and
thunderstorms.

$$