907
FZUS52 KKEY 200248
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
1048 PM EDT Sat Jul 19 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.

GMZ005-201500-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1048 PM EDT Sat Jul 19 2025

.SYNOPSIS...A stronger high pressure center over the North
Atlantic will begin to weaken today and allow breezes to slacken
from moderate to gentle by early next week. Expect breezes to
freshen mid week as a weak region of low pressure develops over
the southeastern United States.

The Approximate Shoreward Edge of the Gulf Stream as of July 15...

18 NM South of Dry Tortugas Light...on Loggerhead Key.
 3 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
 1 NM South of Sand Key Light...off Key West.
 4 NM South of Looe Key...off Big Pine Key.
 4 NM Southeast of Sombrero Key Light...off Marathon.
10 NM Southeast of Alligator Reef Light...off Islamorada.
 6 NM Southeast of Molasses Reef Light...off Key Largo.
 3 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.

$$

GMZ031-201500-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
1048 PM EDT Sat Jul 19 2025

.OVERNIGHT...East winds 10 to 15 knots. Bay waters a light to
moderate chop. Isolated showers and thunderstorms.
.SUNDAY...East winds near 10 knots. Bay waters a light chop.
Isolated showers and thunderstorms.
.SUNDAY NIGHT...East winds near 10 knots, decreasing to 5 to 10
knots. Bay waters a light chop, becoming smooth to a light chop.
Isolated showers and thunderstorms.
.MONDAY...East to southeast winds 5 to 10 knots. Bay waters
smooth to a light chop. Scattered showers and isolated
thunderstorms.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters smooth
to a light chop. Isolated showers and thunderstorms.
.TUESDAY...Southeast winds 5 to 10 knots. Bay waters smooth to a
light chop. Scattered showers and isolated thunderstorms.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters smooth
to a light chop. Scattered showers and isolated thunderstorms.
.WEDNESDAY...Southeast winds 5 to 10 knots. Bay waters smooth to
a light chop. Scattered showers and isolated thunderstorms.
.WEDNESDAY NIGHT...East to southeast winds near 10 knots. Bay
waters a light chop. Scattered showers and isolated
thunderstorms.
.THURSDAY AND THURSDAY NIGHT...East to southeast winds near 10
knots. Bay waters a light chop. Scattered showers and isolated
thunderstorms.

$$

GMZ032-035-201500-
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-
1048 PM EDT Sat Jul 19 2025

.OVERNIGHT...East winds 10 to 15 knots. Seas 1 to 2 feet.
Nearshore waters a light to moderate chop. Isolated showers and
thunderstorms.
.SUNDAY...East winds near 10 knots. Seas around 1 foot. Nearshore
waters a light chop. Isolated showers and thunderstorms.
.SUNDAY NIGHT...East winds near 10 knots. Seas around 1 foot.
Nearshore waters a light chop. Isolated showers and
thunderstorms.
.MONDAY...East winds 5 to 10 knots. Seas 1 foot or less.
Nearshore waters smooth to a light chop. Scattered showers and
isolated thunderstorms.
.MONDAY NIGHT...East to southeast winds 5 to 10 knots. Seas 1
foot or less. Nearshore waters smooth to a light chop. Isolated
showers and thunderstorms.
.TUESDAY...East to southeast winds 5 to 10 knots. Seas 1 foot or
less. Nearshore waters smooth to a light chop. Scattered showers
and isolated thunderstorms.
.TUESDAY NIGHT...East to southeast winds 5 to 10 knots. Seas 1
foot or less. Nearshore waters smooth. Scattered showers and
isolated thunderstorms.
.WEDNESDAY...East to southeast winds 5 to 10 knots. Seas 1 foot
or less. Nearshore waters smooth to a light chop. Scattered
showers and isolated thunderstorms.
.WEDNESDAY NIGHT...East to southeast winds near 10 knots. Seas
around 1 foot. Nearshore waters a light chop. Scattered showers
and isolated thunderstorms.
.THURSDAY...Southeast winds near 10 knots. Seas around 1 foot.
Nearshore waters a light chop. Scattered showers and isolated
thunderstorms.
.THURSDAY NIGHT...East to southeast winds near 10 knots. Seas
around 1 foot. Nearshore waters a light chop. Scattered showers
and isolated thunderstorms.

$$

GMZ042>044-201500-
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-
1048 PM EDT Sat Jul 19 2025

.OVERNIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.
Nearshore waters a light to moderate chop. Isolated showers and
thunderstorms.
.SUNDAY...East winds near 10 knots. Seas around 2 feet, subsiding
to 1 to 2 feet. Nearshore waters a light chop. Isolated showers
and thunderstorms.
.SUNDAY NIGHT...East winds near 10 knots. Seas 1 to 2 feet.
Nearshore waters a light chop. Isolated showers and
thunderstorms.
.MONDAY...East winds 5 to 10 knots. Seas around 1 foot. Nearshore
waters 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 5 to 10 knots. Seas around 1
foot. Nearshore waters smooth to a light chop. Scattered showers
and isolated thunderstorms.
.TUESDAY 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.
.WEDNESDAY...East to southeast winds 5 to 10 knots. Seas around
1 foot. Nearshore waters smooth to a light chop. Scattered
showers and isolated thunderstorms.
.WEDNESDAY NIGHT...East to southeast winds near 10 knots,
increasing to 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters
a light chop, becoming a light to moderate chop. Scattered
showers and isolated thunderstorms.
.THURSDAY...East to southeast winds 10 to 15 knots. Seas 1 to
2 feet. Nearshore waters a light to moderate chop. Scattered
showers and isolated thunderstorms.
.THURSDAY NIGHT...East to southeast winds 10 to 15 knots. Seas
1 to 2 feet. Nearshore waters a light to moderate chop. Scattered
showers and isolated thunderstorms.

$$

GMZ052>055-072>075-201500-
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-
1048 PM EDT Sat Jul 19 2025

.OVERNIGHT...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. Isolated showers and
thunderstorms.
.SUNDAY...Northeast to east winds 10 to 15 knots. Seas 2 to
3 feet. Wave Detail: East 3 feet at 5 seconds. Isolated showers
and thunderstorms.
.SUNDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: East 3 feet at 5 seconds. Isolated showers and
thunderstorms.
.MONDAY...East winds near 10 knots. Seas around 2 feet, subsiding
to 1 to 2 feet. Scattered showers and isolated thunderstorms.
.MONDAY NIGHT...East to southeast winds 5 to 10 knots. Seas 1 to
2 feet. Isolated showers and thunderstorms.
.TUESDAY...East winds 5 to 10 knots. Seas 1 to 2 feet. Scattered
showers and isolated thunderstorms.
.TUESDAY NIGHT...East to southeast winds 5 to 10 knots. Seas 1 to
2 feet. Scattered showers and isolated thunderstorms.
.WEDNESDAY...East to southeast winds near 10 knots. Seas 1 to 2
feet. Scattered showers and isolated thunderstorms.
.WEDNESDAY NIGHT...East to southeast winds 10 to 15 knots. Seas
2 to 3 feet. Scattered showers and isolated thunderstorms.
.THURSDAY...East to southeast winds 10 to 15 knots. Seas 2 to
3 feet. Scattered showers and isolated thunderstorms.
.THURSDAY NIGHT...East to southeast winds 10 to 15 knots. Seas
2 to 3 feet. Scattered showers and isolated thunderstorms.

$$

GMZ033-034-201500-
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-
1048 PM EDT Sat Jul 19 2025

.OVERNIGHT...East winds 10 to 15 knots. Seas 1 to 2 feet. Wave
Detail: East 2 feet at 4 seconds. Isolated showers and
thunderstorms.
.SUNDAY...East winds near 10 knots, decreasing to 5 to 10 knots.
Seas 1 to 2 feet. Wave Detail: East 2 feet at 3 seconds. Isolated
showers and thunderstorms.
.SUNDAY NIGHT...East winds 5 to 10 knots. Seas around 1 foot.
Wave Detail: East 1 foot at 3 seconds. Isolated showers and
thunderstorms.
.MONDAY...Northeast to east winds 5 to 10 knots. Seas around 1
foot. Isolated showers and thunderstorms.
.MONDAY NIGHT...East to southeast winds near 5 knots. Seas around 1
foot. Scattered showers and isolated thunderstorms.
.TUESDAY...Northeast to east winds near 5 knots. Seas around 1
foot. Scattered showers and isolated thunderstorms.
.TUESDAY NIGHT...East to southeast winds 5 to 10 knots. Seas
around 1 foot. Scattered showers and isolated thunderstorms.
.WEDNESDAY...East to southeast winds 5 to 10 knots. Seas around
1 foot. Scattered showers and isolated thunderstorms.
.WEDNESDAY NIGHT...East to southeast winds 5 to 10 knots. Seas
1 to 2 feet. Scattered showers and isolated thunderstorms.
.THURSDAY...Southeast winds 5 to 10 knots. Seas 1 to 2 feet.
Scattered showers and isolated thunderstorms.
.THURSDAY NIGHT...East to southeast winds 5 to 10 knots. Seas
1 foot or less. Scattered showers and isolated thunderstorms.

$$