Coastal Waters Forecast
Issued by NWS Key West, FL

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956
FZUS52 KKEY 072018
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
418 PM EDT Sat Jun 7 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.

GMZ005-080830-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
418 PM EDT Sat Jun 7 2025

.SYNOPSIS...Saharan dust will continue to linger, and will
promote lower rain and thunder chances through the weekend. The
Azores high will dominate the pattern through the forecast period
with light to gentle east to southeast breezes through the
weekend. Early to mid next week, the Azores high will shift to the
southwest more over the central North Atlantic which will
encourage gentle to moderate east to southeast breezes.

The Approximate Shoreward Edge of the Gulf Stream as of June 06...

19 NM Southwest of Dry Tortugas Light...on Loggerhead Key.
25 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
40 NM South of Sand Key Light...off Key West.
25 NM Southeast of Looe Key...off Big Pine Key.
16 NM Southeast of Sombrero Key Light...off Marathon.
 5 NM Southeast of Alligator Reef Light...off Islamorada.
 3 NM Southeast of Molasses Reef Light...off Key Largo.
 3 NM East 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.

$$

GMZ031-080830-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
418 PM EDT Sat Jun 7 2025

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

$$

GMZ032-035-080830-
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-
418 PM EDT Sat Jun 7 2025

.TONIGHT...East to southeast winds near 10 knots. Seas around 1
foot, except 1 to 2 feet west of the Marquesas Keys. Nearshore
waters a light chop.
.SUNDAY...East to southeast winds near 10 knots. Seas around 1
foot, except 1 to 2 feet west of the Marquesas Keys. Nearshore
waters a light chop. Isolated showers and thunderstorms.
.SUNDAY NIGHT...Southeast winds 10 to 15 knots. Seas 1 to 2 feet,
except around 2 feet west of the Marquesas Keys. Nearshore waters
a light to moderate chop. Isolated showers and thunderstorms.
.MONDAY...Southeast winds near 10 knots. Seas around 1 foot,
except 1 to 2 feet west of the Marquesas Keys. Nearshore waters a
light chop. Isolated showers and thunderstorms.
.MONDAY NIGHT...East to southeast winds 10 to 15 knots. Seas
1 to 2 feet, except around 2 feet west of the Marquesas Keys.
Nearshore waters a light to moderate chop. Isolated showers and
thunderstorms.
.TUESDAY...East to southeast winds near 10 knots. Seas around
1 foot, except 1 to 2 feet west of the Marquesas Keys. Nearshore
waters a light chop. Scattered showers and isolated thunderstorms.
.TUESDAY NIGHT...East to southeast winds 10 to 15 knots. Seas
1 to 2 feet, except around 2 feet west of the Marquesas Keys.
Nearshore waters a light to moderate chop. Scattered showers and
isolated thunderstorms.
.WEDNESDAY...East to southeast winds 10 to 15 knots. Seas 1 to 2
feet, except around 2 feet west of the Marquesas Keys. Nearshore
waters a light to moderate chop. Scattered showers and isolated
thunderstorms.
.WEDNESDAY NIGHT...East to southeast winds near 15 knots. Seas
1 to 2 feet, except 2 to 3 feet west of the Marquesas Keys.
Nearshore waters a moderate chop. Scattered showers and isolated
thunderstorms.
.THURSDAY...East to southeast winds near 15 knots. Seas 2 to
3 feet. Nearshore waters a moderate chop. Scattered showers and
isolated thunderstorms.
.THURSDAY NIGHT...East to southeast winds 15 to 20 knots. Seas
2 to 3 feet. Nearshore waters choppy. Scattered showers and
isolated thunderstorms.

$$

GMZ042>044-080830-
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-
418 PM EDT Sat Jun 7 2025

.TONIGHT...East to southeast winds near 10 knots. Seas 1 to
2 feet. Nearshore waters a light chop.
.SUNDAY...East to southeast winds near 10 knots. Seas 1 to 2
feet. Nearshore waters a light chop. Isolated showers and
thunderstorms.
.SUNDAY NIGHT...East to southeast winds near 10 knots, increasing
to 10 to 15 knots. Seas 1 to 2 feet, building to around 2 feet.
Nearshore waters a light chop, becoming a light to moderate chop.
Isolated showers and thunderstorms.
.MONDAY...East to southeast winds near 10 knots. Seas 1 to
2 feet. Nearshore waters a light chop. Isolated showers and
thunderstorms.
.MONDAY NIGHT...East to southeast winds 10 to 15 knots. Seas
around 2 feet. Nearshore waters a light to moderate chop.
Isolated showers and thunderstorms.
.TUESDAY...East to southeast winds near 10 knots. Seas 1 to
2 feet. Nearshore waters a light chop. Isolated showers and
thunderstorms.
.TUESDAY NIGHT...East to southeast winds 10 to 15 knots. Seas
around 2 feet. Nearshore waters a light to moderate chop.
Scattered showers and isolated thunderstorms.
.WEDNESDAY...East to southeast winds 10 to 15 knots. Seas around 2
feet. Nearshore waters a light to moderate chop. Scattered
showers and isolated thunderstorms.
.WEDNESDAY NIGHT...East to southeast winds near 15 knots. Seas 2
to 3 feet. Nearshore waters a moderate chop. Scattered showers
and isolated thunderstorms.
.THURSDAY...East to southeast winds near 15 knots. Seas 2 to
3 feet. Nearshore waters a moderate chop. Scattered showers and
isolated thunderstorms.
.THURSDAY NIGHT...East to southeast winds 15 to 20 knots. Seas
around 3 feet. Nearshore waters choppy. Scattered showers and
isolated thunderstorms.

$$

GMZ052>055-072>075-080830-
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-
418 PM EDT Sat Jun 7 2025

.TONIGHT...East to southeast winds 10 to 15 knots. Seas 2 to
3 feet. Wave Detail: East 2 feet at 4 seconds. Isolated showers
and thunderstorms.
.SUNDAY...East to southeast winds near 10 knots. Seas around 2 feet.
Wave Detail: East 2 feet at 4 seconds. Isolated showers and
thunderstorms.
.SUNDAY NIGHT...East to southeast winds 10 to 15 knots. Seas 2 to
3 feet. Wave Detail: East to southeast 3 feet at 4 seconds.
Isolated showers and thunderstorms.
.MONDAY...East to southeast winds 10 to 15 knots. Seas 2 to
3 feet. Isolated showers and thunderstorms.
.MONDAY NIGHT...East to southeast winds 10 to 15 knots. Seas
2 to 3 feet. Scattered showers and isolated thunderstorms.
.TUESDAY...East to southeast winds 10 to 15 knots, decreasing to
near 10 knots. Seas 2 to 3 feet, subsiding to around 2 feet.
Scattered showers and isolated thunderstorms.
.TUESDAY NIGHT...East to southeast winds 10 to 15 knots. Seas
2 to 3 feet. Scattered showers and isolated thunderstorms.
.WEDNESDAY...East to southeast winds 10 to 15 knots. Seas 2 to
3 feet. Scattered showers and isolated thunderstorms.
.WEDNESDAY NIGHT...East to southeast winds near 15 knots. Seas 2
to 4 feet, occasionally to 5 feet. Scattered showers and isolated
thunderstorms.
.THURSDAY...East to southeast winds near 15 knots. Seas 2 to 4
feet, occasionally to 5 feet. Scattered showers and isolated
thunderstorms.
.THURSDAY NIGHT...East to southeast winds 15 to 20 knots. Seas
building to 3 to 5 feet, occasionally to 6 feet. Scattered
showers and isolated thunderstorms.

$$

GMZ033-034-080830-
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-
418 PM EDT Sat Jun 7 2025

.TONIGHT...East to southeast winds 5 to 10 knots. Seas 1 to 2 feet.
Wave Detail: East to southeast 1 foot at 3 seconds. Isolated
showers and thunderstorms.
.SUNDAY...Southeast winds 5 to 10 knots. Seas 1 to 2 feet. Wave
Detail: Southeast 1 foot at 3 seconds. Isolated showers and
thunderstorms.
.SUNDAY NIGHT...East to southeast winds 5 to 10 knots, becoming
southeast and increasing to 10 to 15 knots after. Seas 1 to 2
feet. Wave Detail: East to southeast 1 foot at 3 seconds.
Isolated showers and thunderstorms.
.MONDAY...Southeast winds near 10 knots. Seas around 2 feet.
Isolated showers and thunderstorms.
.MONDAY NIGHT...East to southeast winds 10 to 15 knots. Seas 2 to
3 feet. Isolated showers and thunderstorms.
.TUESDAY...East to southeast winds near 10 knots, decreasing to 5
to 10 knots. Seas around 2 feet, subsiding to 1 to 2 feet.
Isolated showers and thunderstorms.
.TUESDAY NIGHT...East to southeast winds 5 to 10 knots, increasing
to 10 to 15 knots. Seas 1 to 2 feet, building to around 2 feet.
Scattered showers and isolated thunderstorms.
.WEDNESDAY...East to southeast winds 10 to 15 knots. Seas around
2 feet. Scattered showers and isolated thunderstorms.
.WEDNESDAY NIGHT...East to southeast winds 10 to 15 knots,
increasing to near 15 knots. Seas around 2 feet, building to 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 15 to 20 knots. Seas
around 3 feet. Scattered showers and isolated thunderstorms.

$$