164
FZUS52 KKEY 302044
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
444 PM EDT Mon Jun 30 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.

GMZ005-010230-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
444 PM EDT Mon Jun 30 2025

.SYNOPSIS...Broad low-level ridging will continue to rebuild over
the North Atlantic and support gentle to moderate east to
southeasterly breezes across Florida Keys coastal waters, veering
to the southeast to south and modestly slackening throughout the
week. An upper- level low north of the Bahamas will continue to
slowly northwestward towards the Florida east coast early this
week, supporting slightly enhanced rain and thunder chances. Rain
chances briefly taper back mid-week before increasing again late
this week due to a new weather disturbance sliding into the
Southeast US.

The Approximate Shoreward Edge of the Gulf Stream as of June 29...

14 NM Southwest of Dry Tortugas Light...on Loggerhead Key.
15 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
18 NM South of Sand Key Light...off Key West.
26 NM South of Looe Key...off Big Pine Key.
31 NM South of Sombrero Key Light...off Marathon.
18 NM Southeast of Alligator Reef Light...off Islamorada.
 9 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.

$$

GMZ031-010230-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
444 PM EDT Mon Jun 30 2025

.TONIGHT...East to southeast winds 10 to 15 knots. Bay waters a
light to moderate chop. Scattered showers and isolated
thunderstorms.
.TUESDAY...East to southeast winds near 10 knots, becoming
southeast. Bay waters a light chop. Scattered showers and
isolated thunderstorms.
.TUESDAY NIGHT...Southeast winds near 10 knots. Bay waters a
light chop. Scattered showers and isolated thunderstorms.
.WEDNESDAY...Southeast to south winds 10 to 15 knots. Bay waters
a light to moderate chop. Isolated showers and thunderstorms.
.WEDNESDAY NIGHT...Southeast winds near 10 knots. Bay waters
a light chop. Isolated showers and thunderstorms.
.THURSDAY...Southeast to south winds near 10 knots. Bay waters a
light chop. Isolated showers and thunderstorms.
.THURSDAY NIGHT...Southeast to south winds near 10 knots. Bay
waters a light chop. Isolated showers and thunderstorms.
.FRIDAY...South winds near 10 knots. Bay waters a light chop.
Scattered showers and isolated thunderstorms.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters smooth
to a light chop. Scattered showers and thunderstorms.
.SATURDAY...Southeast to south winds 5 to 10 knots, increasing to
near 10 knots. Bay waters smooth to a light chop, becoming a
light chop. Numerous showers and scattered thunderstorms.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters a
light to moderate chop. Scattered showers and isolated
thunderstorms.

$$

GMZ032-035-010230-
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-
444 PM EDT Mon Jun 30 2025

.TONIGHT...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.
.TUESDAY...East to southeast winds near 10 knots, becoming
southeast and decreasing to 5 to 10 knots. Seas subsiding to
around 1 foot. Nearshore waters a light chop, becoming smooth to a
light chop. Isolated showers and thunderstorms.
.TUESDAY NIGHT...East to southeast 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. Isolated showers and
thunderstorms.
.WEDNESDAY...Southeast to south winds near 10 knots. Seas around
1 foot. Nearshore waters a light chop. Isolated showers and
thunderstorms.
.WEDNESDAY NIGHT...Southeast winds near 10 knots. Seas around 1
foot. Nearshore waters a light chop. Isolated showers and
thunderstorms.
.THURSDAY...Southeast to south winds near 10 knots. Seas 1 to 2
feet. Nearshore waters a light chop. Isolated showers and
thunderstorms.
.THURSDAY NIGHT...Southeast to south winds near 10 knots. Seas 1
to 2 feet. Nearshore waters a light chop. Isolated showers and
thunderstorms.
.FRIDAY...South winds decreasing to 5 to 10 knots. Seas around 1
foot, subsiding to 1 foot or less. West of the Marquesas Keys,
seas 1 to 2 feet, subsiding to around 1 foot. Nearshore waters
becoming smooth to a light chop. Scattered showers and isolated
thunderstorms.
.FRIDAY NIGHT...Winds becoming southeast near 10 knots. Seas
around 1 foot. Nearshore waters becoming a light chop. Scattered
showers and thunderstorms.
.SATURDAY...Southeast 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. Numerous showers and scattered
thunderstorms.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots. Seas around 1
foot, building to 1 to 2 feet. Nearshore waters a light to
moderate chop. Scattered showers and isolated thunderstorms.

$$

GMZ042>044-010230-
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-
444 PM EDT Mon Jun 30 2025

.TONIGHT...East to southeast winds 10 to 15 knots. Seas around 2
feet. Nearshore waters a light to moderate chop. Scattered showers
and isolated thunderstorms.
.TUESDAY...East to southeast winds near 10 knots, becoming
southeast and decreasing to 5 to 10 knots. Seas 1 to 2 feet.
Nearshore waters a light chop, becoming smooth to a light chop.
Isolated showers and thunderstorms.
.TUESDAY NIGHT...East to southeast winds 5 to 10 knots, increasing
to near 10 knots. Seas 1 to 2 feet. Nearshore waters smooth to a
light chop, becoming a light chop. Isolated showers and
thunderstorms.
.WEDNESDAY...Southeast winds 10 to 15 knots. Seas 1 to 3 feet.
Nearshore waters a light to moderate chop. Isolated showers and
thunderstorms.
.WEDNESDAY NIGHT...Southeast winds near 10 knots. Seas 1 to 2
feet. Nearshore waters a light chop. Isolated showers and
thunderstorms.
.THURSDAY...Southeast to south winds near 10 knots. Seas 1 to 2
feet. Nearshore waters smooth to a light chop. Isolated showers
and thunderstorms.
.THURSDAY NIGHT...Southeast winds near 10 knots. Seas 1 to
2 feet. Nearshore waters a light chop. Isolated showers and
thunderstorms.
.FRIDAY...Southeast to south winds decreasing to 5 to 10 knots.
Seas 1 to 2 feet. Nearshore waters becoming smooth to a light
chop. Scattered showers and isolated thunderstorms.
.FRIDAY NIGHT...Winds becoming southeast near 10 knots. Seas 1 to
2 feet. Nearshore waters becoming a light chop. Scattered showers
and thunderstorms.
.SATURDAY...Southeast winds 5 to 10 knots, increasing to near 10
knots. Seas 1 to 2 feet. Nearshore waters smooth to a light chop,
becoming a light chop. Scattered showers and thunderstorms.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots. Seas 1 to
2 feet, building to around 2 feet. Nearshore waters a light to
moderate chop. Scattered showers and isolated thunderstorms.

$$

GMZ052>055-072>075-010230-
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-
444 PM EDT Mon Jun 30 2025

.TONIGHT...East to southeast winds near 15 knots, decreasing to 10
to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave
Detail: East 3 feet at 5 seconds. Scattered showers and isolated
thunderstorms.
.TUESDAY...East to southeast winds 10 to 15 knots, decreasing to
near 10 knots. Seas 2 to 3 feet. Wave Detail: East to southeast 2
feet at 5 seconds. Isolated showers and thunderstorms.
.TUESDAY NIGHT...East to southeast winds increasing to 10 to 15
knots. Seas around 2 feet, building to 2 to 3 feet. Isolated
showers and thunderstorms.
.WEDNESDAY...Southeast winds 10 to 15 knots. Seas 2 to 3 feet.
Isolated showers and thunderstorms.
.WEDNESDAY NIGHT...East to southeast 10 to 15 knots. Seas 2 to 3
feet. Isolated showers and thunderstorms.
.THURSDAY...Southeast winds 10 to 15 knots. Seas 2 to 3 feet.
Isolated showers and thunderstorms.
.THURSDAY NIGHT...East to southeast winds 10 to 15 knots. Seas
2 to 3 feet. Isolated showers and thunderstorms.
.FRIDAY...Southeast winds near 10 knots, decreasing to 5 to 10
knots. Seas subsiding to 1 to 2 feet. Scattered showers and
isolated thunderstorms.
.FRIDAY NIGHT...Winds becoming east to southeast near 10 knots.
Seas 1 to 2 feet. Scattered showers and thunderstorms.
.SATURDAY...Southeast winds 5 to 10 knots. Seas 1 to 2 feet.
Scattered showers and thunderstorms.
.SATURDAY NIGHT...East to southeast winds 10 to 15 knots. Seas
2 to 3 feet. Scattered showers and isolated thunderstorms.

$$

GMZ033-034-010230-
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-
444 PM EDT Mon Jun 30 2025

.TONIGHT...East to southeast winds 10 to 15 knots. Seas around 2
feet. Wave Detail: East 2 feet at 4 seconds. Scattered showers and
isolated thunderstorms.
.TUESDAY...East to southeast near 10 knots, decreasing to 5 to 10
knots. Seas 1 to 2 feet, subsiding to around 1 foot. Wave Detail:
East to southeast 1 foot at 3 seconds. Isolated showers and
thunderstorms.
.TUESDAY NIGHT...East to southeast winds 5 to 10 knots. Seas
around 1 foot. Isolated showers and thunderstorms.
.WEDNESDAY...Southeast to south winds near 10 knots, decreasing to
5 to 10 knots. Seas around 1 foot. Isolated showers and
thunderstorms.
.WEDNESDAY NIGHT...Southwest winds 5 to 10 knots, becoming
southeast and increasing to near 10 knots. Seas around 1 foot.
Isolated showers and thunderstorms.
.THURSDAY...South winds decreasing to 5 to 10 knots. Seas 1 to 2
feet due to a northwest swell. Isolated showers and
thunderstorms.
.THURSDAY NIGHT...Southeast to south winds 5 to 10 knots. Seas 1
to 2 feet due to a northwest swell. Isolated showers and
thunderstorms.
.FRIDAY...South to southwest winds decreasing to near 5 knots.
Seas around 2 feet due to a northwest swell. Scattered showers
and isolated thunderstorms.
.FRIDAY NIGHT...Winds becoming southeast 5 to 10 knots. Seas
subsiding to 1 to 2 feet. Scattered showers and thunderstorms.
.SATURDAY...Southeast to south winds 5 to 10 knots. Seas around
1 foot. Numerous showers and scattered thunderstorms.
.SATURDAY NIGHT...Southeast to south winds near 10 knots. Seas 1
to 2 feet. Scattered showers and isolated thunderstorms.

$$