087
FZUS52 KKEY 191530
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
Issued by National Weather Service Mobile AL
1030 AM EST Wed Nov 19 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.

GMZ005-200330-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1030 AM EST Wed Nov 19 2025

.SYNOPSIS...A high pressure system stretching from the western
Atlantic to the Florida panhandle will sustain northeast to east
breezes across the Florida Keys coastal waters. Expect the high to
gradually weaken during the second half of the week, which will
allow breezes to slacken from moderate or fresh to gentle by the
weekend. Expect slightly fresher breezes south of the island
chain.

The Approximate Shoreward Edge of the Gulf Stream as of November 14...

54 NM South of Dry Tortugas Light...on Loggerhead Key.
23 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
19 NM South of Sand Key Light...off Key West.
17 NM South of Looe Key...off Big Pine Key.
15 NM Southeast of Sombrero Key Light...off Marathon.
 4 NM Southeast of Alligator Reef Light...off Islamorada.
 1 NM Southeast of Molasses Reef Light...off Key Largo.
 1 NM Southeast 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.

$$

GMZ031-200330-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
1030 AM EST Wed Nov 19 2025

.THIS AFTERNOON...Northeast to east winds near 10 knots. Bay
waters a light chop.
.TONIGHT...Northeast winds near 10 knots. Bay waters a light
chop.
.THURSDAY...Northeast to east winds 10 to 15 knots. Bay waters a
light to moderate chop.
.THURSDAY NIGHT...Northeast to east winds 10 to 15 knots. Bay
waters a light to moderate chop.
.FRIDAY...Northeast to east winds 10 to 15 knots. Bay waters a
light to moderate chop.
.FRIDAY NIGHT...Northeast to east winds near 10 knots. Bay waters
a light chop.
.SATURDAY...Northeast to east winds near 10 knots. Bay waters a
light chop.
.SATURDAY NIGHT THROUGH SUNDAY NIGHT...Northeast to east winds 5
to 10 knots. Bay waters smooth to a light chop.

$$

GMZ032-035-200330-
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-
1030 AM EST Wed Nov 19 2025

.THIS AFTERNOON...Northeast to east winds 10 to 15 knots. Seas 1
to 2 feet, except 2 to 3 feet west of the Marquesas Keys.
Nearshore waters a light to moderate chop.
.TONIGHT...Northeast to east 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.
.THURSDAY AND THURSDAY NIGHT...Northeast to east winds 10 to 15
knots. Seas 1 to 2 feet, except 2 to 3 feet west of the Marquesas
Keys. Nearshore waters a light to moderate chop.
.FRIDAY...Northeast to east 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.
.FRIDAY NIGHT...Northeast to east 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.
.SATURDAY...Northeast to east winds decreasing to near 10 knots.
Seas subsiding to around 1 foot. Nearshore waters becoming a
light chop.
.SATURDAY NIGHT...Northeast to east winds near 10 knots. Seas
around 1 foot. Nearshore waters a light chop.
.SUNDAY AND SUNDAY NIGHT...Northeast winds 5 to 10 knots. Seas 1
foot or less. Nearshore waters smooth to a light chop.

$$

GMZ042>044-200330-
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-
1030 AM EST Wed Nov 19 2025

.THIS AFTERNOON...Northeast to east winds 10 to 15 knots. Seas 2
to 3 feet. Nearshore waters a light to moderate chop.
.TONIGHT...Northeast to east winds 10 to 15 knots. Seas 2 to
3 feet. Nearshore waters a light to moderate chop.
.THURSDAY THROUGH FRIDAY...Northeast to east winds 10 to 15
knots. Seas 2 to 3 feet. Nearshore waters a light to moderate
chop.
.FRIDAY NIGHT...Northeast to east winds 10 to 15 knots. Seas 2 to
3 feet. Nearshore waters a light to moderate chop.
.SATURDAY...Northeast to east winds 10 to 15 knots. Seas subsiding
to around 2 feet. Nearshore waters a light to moderate chop.
.SATURDAY NIGHT THROUGH SUNDAY NIGHT...Northeast to east winds
near 10 knots. Seas 1 to 2 feet. Nearshore waters a light chop.

$$

GMZ052>055-072>075-200330-
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-
1030 AM EST Wed Nov 19 2025

.THIS AFTERNOON...Northeast to east winds near 15 knots. Seas 2
to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 5
seconds. Scattered showers, mainly in the western Straits.
.TONIGHT...Northeast to east winds near 15 knots, briefly
increasing to 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6
feet. Wave Detail: Northeast to east 4 feet at 5 seconds.
.THURSDAY...Northeast to east winds near 15 knots. Seas 3 to
4 feet, occasionally to 5 feet. Wave Detail: Northeast to east
4 feet at 5 seconds.
.THURSDAY NIGHT...Northeast to east winds 15 to 20 knots. Seas 3
to 5 feet, occasionally to 6 feet.
.FRIDAY...Northeast to east winds near 15 knots. Seas 2 to
4 feet, occasionally to 5 feet.
.FRIDAY NIGHT...Northeast to east winds 10 to 15 knots. Seas 2 to
4 feet, occasionally to 5 feet. Isolated showers.
.SATURDAY THROUGH SUNDAY NIGHT...Northeast to east winds 10 to 15
knots. Seas 2 to 3 feet.

$$

GMZ033-034-200330-
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-
1030 AM EST Wed Nov 19 2025

.THIS AFTERNOON...Northeast to east winds near 15 knots,
subsiding to 10 to 15 knots. Seas 2 to 4 feet, subsiding to 1 to 3
feet.
.TONIGHT...Northeast to east winds 10 to 15 knots. Seas 3 to 4
feet, occasionally to 5 feet. Wave Detail: Northeast to east 4
feet at 5 seconds.
.THURSDAY THROUGH FRIDAY...Northeast to east winds 10 to 15
knots. Seas 1 to 3 feet.
.THURSDAY NIGHT...Northeast to east winds 10 to 15 knots. Seas 1 to 3
feet.
.FRIDAY NIGHT...Northeast to east winds 10 to 15 knots. Seas 1 to
3 feet.
.SATURDAY THROUGH SUNDAY NIGHT...Northeast to east winds 10 to 15
knots. Seas 1 to 2 feet.

$$