National Weather Service Weather Forecast Office

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

000
FZUS52 KKEY 240821
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
421 AM EDT Wed Apr 24 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.

GMZ005-241430-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
421 AM EDT Wed Apr 24 2024

.SYNOPSIS...Gentle to moderate breezes will prevail over the next
couple of days as high pressure moves from the Southeastern
states offshore into the western Atlantic. This high will be
subsumed into a larger high spreading into the western North
Atlantic late this week and into the weekend. This will be
accompanied by freshening easterly breezes across the Keys
waters.

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

$$

GMZ031-241430-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
421 AM EDT Wed Apr 24 2024

.TODAY...East winds near 15 knots, decreasing to 10 to 15 knots.
Bay waters a moderate chop, becoming a light to moderate chop.
.TONIGHT...Northeast to east winds 10 to 15 knots. Bay waters a
light to moderate chop.
.THURSDAY...Northeast to east winds increasing to near 15 knots.
Bay waters becoming a moderate chop in the afternoon.
.THURSDAY NIGHT...Northeast to east winds near 15 knots. Bay
waters a moderate chop.
.FRIDAY...East winds increasing to 15 to 20 knots. Bay waters a
becoming choppy.
.FRIDAY NIGHT...East winds increasing to near 20 knots. Bay
waters becoming rough.
.SATURDAY...East winds near 20 knots. Bay waters rough.
.SATURDAY NIGHT THROUGH SUNDAY NIGHT...East winds near 20 knots.
Bay waters rough. Isolated showers.

$$

GMZ032-035-241430-
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-
421 AM EDT Wed Apr 24 2024

.TODAY...East winds near 15 knots, decreasing to 10 to 15 knots.
Seas 1 to 3 feet, subsiding to 1 to 2 feet. Nearshore waters a
moderate chop, becoming a light to moderate chop.
.TONIGHT...East winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore
waters a light to moderate chop.
.THURSDAY...East winds increasing to near 15 knots. Seas 1 to 2
feet. Nearshore waters a light to moderate chop.
.THURSDAY NIGHT...East winds 15 to 20 knots, decreasing to near 15
knots. Seas 1 to 2 feet, except 2 to 3 feet west of the Marquesas
Keys. Nearshore waters choppy, becoming a moderate chop.
.FRIDAY...East winds increasing to 15 to 20 knots. Seas building
to 1 to 3 feet, except building to 3 to 4 feet west of the
Marquesas Keys. Nearshore waters becoming choppy.
.FRIDAY NIGHT...East winds near 20 knots. Seas 2 to 3 feet,
except 3 to 5 feet west of the Marquesas Keys. Nearshore waters
rough.
.SATURDAY...East winds near 20 knots. Seas 2 to 3 feet, except
4 to 5 feet west of the Marquesas Keys. Nearshore waters rough.
.SATURDAY NIGHT...East winds 20 to 25 knots. Seas 2 to 3 feet,
except 4 to 5 feet west of the Marquesas Keys. Nearshore waters
very rough.
.SUNDAY AND SUNDAY NIGHT...East winds near 20 knots. Seas 2 to 3
feet, except 4 to 5 feet west of the Marquesas Keys. Nearshore
waters rough. Isolated showers.

$$

GMZ042>044-241430-
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-
421 AM EDT Wed Apr 24 2024

.TODAY...East winds near 15 knots, decreasing to 10 to 15 knots.
Seas 2 to 3 feet. Nearshore waters a moderate chop, becoming a
light to moderate chop. Isolated showers.
.TONIGHT...Northeast to east winds 10 to 15 knots. Seas 1 to 2
feet. Nearshore waters a light to moderate chop.
.THURSDAY...Northeast to east winds increasing to near 15 knots.
Seas building to around 2 feet. Nearshore waters becoming a
moderate chop.
.THURSDAY NIGHT...East winds 15 to 20 knots, decreasing to near 15
knots. Seas building to 2 to 4 feet. Nearshore waters choppy,
becoming a moderate chop.
.FRIDAY...East winds 15 to 20 knots. Seas 2 to 4 feet. Nearshore
waters choppy.
.FRIDAY NIGHT...East winds near 20 knots. Seas 3 to 5 feet,
except 4 to 5 feet west of Cosgrove Shoal Light. Nearshore waters
rough.
.SATURDAY...East winds near 20 knots. Seas 3 to 5 feet. Nearshore
waters rough.
.SATURDAY NIGHT...East winds 20 to 25 knots. Seas 3 to 5 feet,
except 4 to 6 feet west of Cosgrove Shoal Light. Nearshore waters
very rough. Isolated showers.
.SUNDAY...East winds near 20 knots. Seas 3 to 5 feet, except 5 to
6 feet west of Cosgrove Shoal Light. Nearshore waters rough.
Isolated showers.
.SUNDAY NIGHT...East winds 20 to 25 knots. Seas 3 to 5 feet,
except 5 to 6 feet west of Cosgrove Shoal Light. Nearshore waters
very rough. Isolated showers.


$$

GMZ052>055-072>075-241430-
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-
421 AM EDT Wed Apr 24 2024

.TODAY...Northeast to east winds near 15 knots. Seas 3 to 5 feet.
Isolated showers.
.TONIGHT...Northeast to east winds near 15 knots. Seas 3 to 4
feet. Isolated showers.
.THURSDAY...Northeast to east winds near 15 knots. Seas 3 to 4
feet.
.THURSDAY NIGHT...Northeast to east winds 15 to 20 knots. Seas
3 to 5 feet.
.FRIDAY...East winds 15 to 20 knots. Seas 3 to 5 feet.
.FRIDAY NIGHT...East winds near 20 knots. Seas building to 5 to 7
feet. Isolated showers.
.SATURDAY...East winds near 20 knots. Seas 5 to 7 feet. Isolated
showers.
.SATURDAY NIGHT...East winds 20 to 25 knots. Seas 6 to 8 feet.
Isolated showers.
.SUNDAY...East winds near 20 knots. Seas 5 to 7 feet. Isolated
showers.
.SUNDAY NIGHT...East winds 20 to 25 knots. Seas 6 to 9 feet.
Isolated showers.

$$

GMZ033-034-241430-
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-
421 AM EDT Wed Apr 24 2024

.TODAY...East winds near 15 knots, decreasing to 10 to 15 knots.
Seas 2 to 3 feet. Isolated showers.
.TONIGHT...East winds 10 to 15 knots. Seas 1 to 2 feet.
.THURSDAY...East winds 10 to 15 knots. Seas 1 to 2 feet.
.THURSDAY NIGHT...East winds increasing to 15 to 20 knots. Seas
building to 2 to 4 feet.
.FRIDAY...East winds near 15 knots, increasing to 15 to 20 knots.
Seas 2 to 4 feet.
.FRIDAY NIGHT...East winds increasing to near 20 knots after
midnight. Seas 3 to 4 feet, building to 4 to 6 feet.
.SATURDAY...East winds near 20 knots. Seas 4 to 6 feet.
.SATURDAY NIGHT...East winds 20 to 25 knots. Seas 4 to 6 feet.
.SUNDAY...East to southeast winds near 20 knots. Seas 4 to 6
feet.
.SUNDAY NIGHT...East winds near 20 knots. Seas 3 to 5 feet.
Isolated showers.

$$