Coastal Waters Forecast
Issued by NWS Key West, FL

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FZUS52 KKEY 020205
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
1005 PM EDT Sun Aug 1 2021

Florida Bay, Hawk Channel and Straits of Florida from Ocean Reef to
south of Dry Tortugas, and the extreme southeastern Gulf of
Mexico, 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.

GMZ005-020830-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1005 PM EDT Sun Aug 1 2021

.SYNOPSIS...Weak high pressure over the area will maintain light
to gentle southeasterly flow over the Florida Keys coastal waters
through Monday. From Tuesday through Thursday night,
strengthening high pressure over the area could lead to occasional
periods of moderate southeasterly flow.

The Approximate Shoreward Edge of the Gulf Stream as of
July 31, 2021...

20 NM South of Dry Tortugas Light...on Loggerhead Key.
 4 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
 1 NM South of Sand Key Light...off Key West.
 1 NM South of Looe Key...off Big Pine Key.
Less than 1 NM South of Sombrero Key Light...off Marathon.
 1 NM Southeast of Alligator Reef Light...off Islamorada.
 2 NM Southeast of Molasses Reef Light...off Key Largo.
 2 NM East of Carysfort Reef Light...off Ocean Reef.

Gulf Stream Information Courtesy of the Naval Oceanographic
Office.

$$

GMZ031-020830-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
1005 PM EDT Sun Aug 1 2021

.OVERNIGHT...Southeast to south winds 5 to 10 knots. Bay waters
smooth to a light chop. Isolated showers and thunderstorms.
.MONDAY...Southeast to south winds 5 to 10 knots. Bay waters
smooth to a light chop. Scattered showers and isolated
thunderstorms.
.MONDAY NIGHT...Southeast to south winds 5 to 10 knots. Bay
waters smooth to a light chop. Scattered showers and isolated
thunderstorms.
.TUESDAY...Southeast to south winds near 10 knots. 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 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...Southeast winds 5 to 10 knots. Bay waters smooth to a
light chop. Scattered showers and isolated thunderstorms.
.THURSDAY NIGHT THROUGH FRIDAY NIGHT...East to southeast winds 5
to 10 knots. Bay waters smooth to a light chop. Scattered showers
and isolated thunderstorms.

$$

GMZ032-035-020830-
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-
1005 PM EDT Sun Aug 1 2021

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

$$

GMZ042>044-020830-
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-
1005 PM EDT Sun Aug 1 2021

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

$$

GMZ052>055-072>075-020830-
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-
1005 PM EDT Sun Aug 1 2021

.OVERNIGHT...East to southeast winds near 10 knots. Seas 1 to 2
feet. Isolated showers and thunderstorms.
.MONDAY...Southeast winds 5 to 10 knots. Seas 1 to 2 feet.
Isolated showers and thunderstorms.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
1 foot. Scattered showers and isolated thunderstorms.
.TUESDAY...Southeast winds 5 to 10 knots. Seas around 1 foot.
Scattered showers and isolated thunderstorms.
.TUESDAY NIGHT...East to southeast winds 5 to 10 knots early,
increasing to 10 to 15 knots. Seas building to 1 to 3 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
1 to 3 feet. Scattered showers and isolated thunderstorms.
.THURSDAY...East to southeast winds near 10 knots. Seas 1 to 2
feet. Scattered showers and isolated thunderstorms.
.THURSDAY NIGHT...East to southeast winds near 10 knots. Seas 1
to 2 feet. Scattered showers and isolated thunderstorms.
.FRIDAY...East to southeast winds 5 to 10 knots. Seas around 1
foot. Scattered showers and isolated thunderstorms.
.FRIDAY NIGHT...East winds near 10 knots. Seas 1 to 2 feet.
Scattered showers and isolated thunderstorms.

$$

GMZ033-034-020830-
Gulf waters from East Cape Sable to Chokoloskee 20 to 60 NM out
and beyond 5 fathoms-
Gulf of Mexico including Dry Tortugas and Rebecca Shoal Channel-
1005 PM EDT Sun Aug 1 2021

.OVERNIGHT...Southeast winds 5 to 10 knots. Seas around 1 foot.
Isolated showers and thunderstorms.
.MONDAY...Southeast to south winds near 5 knots. Seas 1 foot or
less. Isolated showers and thunderstorms.
.MONDAY NIGHT...Southeast to south winds 5 to 10 knots. Seas
1 foot or less. Scattered showers and isolated thunderstorms.
.TUESDAY...South winds 5 to 10 knots. Seas around 1 foot.
Scattered showers and isolated thunderstorms.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots, increasing to near
10 knots. Seas around 1 foot. Scattered showers and isolated
thunderstorms.
.WEDNESDAY...Southeast to south winds 5 to 10 knots. Seas around
1 foot. Scattered showers and isolated thunderstorms.
.WEDNESDAY NIGHT...East to southeast winds 5 to 10 knots early,
increasing to near 10 knots. Seas building to 1 to 2 feet.
Scattered showers and isolated thunderstorms.
.THURSDAY...Southeast winds 5 to 10 knots. Seas around 1 foot.
Scattered showers and isolated thunderstorms.
.THURSDAY NIGHT...East to southeast winds near 10 knots. Seas
around 1 foot. Scattered showers and isolated thunderstorms.
.FRIDAY...Southeast winds 5 to 10 knots. Seas around 1 foot.
Scattered showers and isolated thunderstorms.
.FRIDAY NIGHT...East to southeast winds near 10 knots. Seas 1 to
2 feet. Scattered showers and isolated thunderstorms.

$$

Kasper


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