National Weather Service Weather Forecast Office

• Home
• Site Map
• News
• Organization
• Search for: NWS All NOAA 

000
FZUS52 KKEY 190827
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
427 AM EDT Fri Apr 19 2024

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.

GMZ005-191430-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
427 AM EDT Fri Apr 19 2024

.SYNOPSIS...High pressure over the western Atlantic will maintain
gentle to occasionally moderate east to southeast breezes across
the Keys coastal waters through the weekend. Gentle southerly
breezes on Monday will become northerly Monday night as a weak
front dissipates over South Florida.

The Approximate Shoreward Edge of the Gulf Stream is currently
unavailable.

$$

GMZ031-191430-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
427 AM EDT Fri Apr 19 2024

.TODAY...East to southeast winds 10 to 15 knots, decreasing to near
10 knots. Bay waters a light to moderate chop, becoming a light
chop.
.TONIGHT AND SATURDAY...East to southeast winds near 10 knots.
Bay waters a light chop.
.SATURDAY NIGHT...East to southeast winds near 10 knots, becoming
southeast 10 to 15 knots after midnight. Bay waters a light chop,
becoming a light to moderate chop.
.SUNDAY...Southeast winds 10 to 15 knots, decreasing to 5 to 10
knots in the afternoon. Bay waters a light to moderate chop,
becoming smooth to a light chop.
.SUNDAY NIGHT...Southeast to south winds 5 to 10 knots. Bay
waters smooth to a light chop.
.MONDAY...South to southwest winds 5 to 10 knots, becoming
southwest to west in the afternoon. Bay waters smooth to a light
chop.
.MONDAY NIGHT...West to northwest winds near 10 knots, becoming
north after midnight. Bay waters a light chop.
.TUESDAY...Northeast to east winds near 5 knots, becoming
southeast in the afternoon. Bay waters smooth. Isolated showers.
.TUESDAY NIGHT...Northeast to east winds increasing to near 10
knots. Bay waters becoming a light chop. Isolated showers.

$$

GMZ032-035-191430-
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-
427 AM EDT Fri Apr 19 2024

.TODAY...East to southeast winds 10 to 15 knots, decreasing to near
10 knots. Seas 1 to 2 feet, subsiding to around 1 foot. Nearshore
waters a light to moderate chop, becoming a light chop.
.TONIGHT AND SATURDAY...East to southeast winds near 10 knots.
Seas around 1 foot. Nearshore waters a light chop.
.SATURDAY NIGHT...East to southeast winds near 10 knots, becoming
southeast 10 to 15 knots after midnight. Seas around 1 foot,
building to 1 to 2 feet. Nearshore waters a light chop, becoming a
light to moderate chop.
.SUNDAY...Southeast winds 10 to 15 knots, decreasing to 5 to
10 knots in the afternoon. Seas 1 to 2 feet, subsiding to 1 foot
or less. Nearshore waters a light to moderate chop, becoming
smooth to a light chop.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or
less. Nearshore waters smooth to a light chop.
.MONDAY...South to southwest winds 5 to 10 knots, becoming
southwest to west in the afternoon. Seas 1 foot or less.
Nearshore waters smooth to a light chop.
.MONDAY NIGHT...West to northwest winds near 10 knots, becoming
north after midnight. Seas around 1 foot. Nearshore waters a
light chop.
.TUESDAY...North to northeast winds 5 to 10 knots. Seas around 1
foot. Nearshore waters smooth to a light chop.
.TUESDAY NIGHT...North to northeast winds near 10 knots, becoming
northeast to east after midnight. Seas 1 to 2 feet. Nearshore
waters a light chop. Isolated showers.

$$

GMZ042>044-191430-
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-
427 AM EDT Fri Apr 19 2024

.TODAY...East to southeast winds 10 to 15 knots, decreasing to near
10 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate
chop, becoming a light chop.
.TONIGHT AND SATURDAY...East to southeast winds near 10 knots.
Seas 1 to 2 feet. Nearshore waters a light chop.
.SATURDAY NIGHT...East to southeast winds 10 to 15 knots, becoming
southeast after midnight. Seas 1 to 2 feet. Nearshore waters a
light to moderate chop.
.SUNDAY...Southeast winds 10 to 15 knots, decreasing to 5 to
10 knots in the afternoon. Seas 1 to 2 feet, subsiding to around
1 foot. Nearshore waters a light to moderate chop, becoming
smooth to a light chop.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
1 foot. Nearshore waters smooth to a light chop.
.MONDAY...Southeast to south winds 5 to 10 knots, becoming
southwest to west in the afternoon. Seas around 1 foot. Nearshore
waters smooth to a light chop.
.MONDAY NIGHT...West to northwest winds near 10 knots, becoming
north after midnight. Seas around 1 foot. Nearshore waters a
light chop.
.TUESDAY...Northeast winds 5 to 10 knots. Seas around 1 foot,
except 1 to 2 feet west of Cosgrove Shoal Light. Nearshore waters
smooth to a light chop.
.TUESDAY NIGHT...Northeast to east winds near 10 knots. Seas 1 to
2 feet. Nearshore waters a light chop. Isolated showers.

$$

GMZ052>055-072>075-191430-
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-
427 AM EDT Fri Apr 19 2024

.TODAY...East winds 10 to 15 knots. Seas 2 to 4 feet.
.TONIGHT...East winds 10 to 15 knots. Seas 2 to 4 feet.
.SATURDAY...East to southeast winds 10 to 15 knots. Seas 2 to
4 feet.
.SATURDAY NIGHT...East to southeast winds near 15 knots, becoming
southeast after midnight. Seas 3 to 4 feet.
.SUNDAY...Southeast winds near 15 knots, becoming east to
southeast 10 to 15 knots in the afternoon. Seas 2 to 4 feet.
.SUNDAY NIGHT...Southeast winds 10 to 15 knots, decreasing to near
10 knots after midnight. Seas 2 to 3 feet.
.MONDAY...Southeast winds 5 to 10 knots, becoming variable
in the afternoon. Seas subsiding to 1 to 2 feet.
.MONDAY NIGHT...West to northwest winds 5 to 10 knots, becoming
north to northeast after midnight. Seas 1 to 2 feet.
.TUESDAY...Northeast winds 5 to 10 knots. Seas 1 to 2 feet.
.TUESDAY NIGHT...Northeast to east winds near 10 knots. Seas 2 to
3 feet.

$$

GMZ033-034-191430-
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-
427 AM EDT Fri Apr 19 2024

.TODAY...East winds 10 to 15 knots, decreasing to 5 to 10 knots.
Seas 1 to 2 feet.
.TONIGHT...East winds 5 to 10 knots. Seas 1 to 2 feet.
.SATURDAY...East to southeast winds 5 to 10 knots. Seas 1 to
2 feet.
.SATURDAY NIGHT...East to southeast winds 5 to 10 knots, becoming
southeast 10 to 15 knots after midnight. Seas 1 to 2 feet.
.SUNDAY...Southeast winds 10 to 15 knots, decreasing to 5 to
10 knots in the afternoon. Seas 1 to 2 feet.
.SUNDAY NIGHT...East to southeast winds near 5 knots. Seas around 1
foot.
.MONDAY...South to southwest winds near 5 knots, becoming west to
northwest 5 to 10 knots in the afternoon. Seas around 1 foot.
.MONDAY NIGHT...Northwest to north winds near 10 knots, becoming
north to northeast after midnight. Seas 1 to 2 feet.
.TUESDAY...North to northeast winds 5 to 10 knots. Seas 1 to
2 feet.
.TUESDAY NIGHT...North to northeast winds near 10 knots, becoming
northeast to east after midnight. Seas around 2 feet.

$$