934
FZUS52 KKEY 180324
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
1024 PM EST Mon Nov 17 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.

GMZ005-181530-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1024 PM EST Mon Nov 17 2025

.SYNOPSIS...A high pressure system currently over the Lower Ohio
Valley will slide east into the Mid-Atlantic through Tuesday
while slowly strengthening. This will promote freshening northeast
to east breezes for mid week. This high will continue moving into
the western North Atlantic elongating and maintaining strength as
it does so. This will allow for continued moderate to fresh
breezes through late week.

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.

$$

GMZ031-181530-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
1024 PM EST Mon Nov 17 2025

.OVERNIGHT...Variable winds near 5 knots, becoming northeast 5 to
10 knots. Bay waters smooth, becoming smooth to a light chop.
.TUESDAY...Northeast to east winds near 10 knots. Bay waters a
light chop.
.TUESDAY NIGHT...Northeast to east winds near 10 knots. Bay
waters a light chop.
.WEDNESDAY...Northeast to east winds near 10 knots. Bay waters
a light chop.
.WEDNESDAY NIGHT...Northeast to east winds 10 to 15 knots. Bay
waters a light to moderate 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...East winds near 10 knots. Bay waters a light
chop.
.SATURDAY...East to southeast winds 5 to 10 knots. Bay waters
smooth to a light chop.
.SATURDAY NIGHT...Winds becoming north to northeast 5 to 10 knots.
Bay waters smooth to a light chop.

$$

GMZ032-035-181530-
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-
1024 PM EST Mon Nov 17 2025

.OVERNIGHT...Variable winds near 5 knots, becoming northeast to
east 5 to 10 knots. Seas 1 foot or less, building to around 1 foot.
Nearshore waters smooth, becoming smooth to a light chop.
.TUESDAY...Northeast to east winds near 10 knots, increasing to 10
to 15 knots. Seas around 1 foot, building to 1 to 2 feet. Nearshore
waters a light chop, becoming a light to moderate chop.
.TUESDAY 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.
.WEDNESDAY...Northeast to east winds 10 to 15 knots, briefly
decreasing to near 10 knots in the afternoon. Seas 1 to 2 feet.
Nearshore waters a light to moderate chop, becoming a light chop.
.WEDNESDAY NIGHT...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 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.
.THURSDAY NIGHT...Northeast to east winds near 15 knots. Seas 1 to 2
feet, except 2 to 3 feet west of the Marquesas Keys. Nearshore
waters a moderate chop.
.FRIDAY...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 NIGHT...East 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.
.SATURDAY...East winds 5 to 10 knots. Seas subsiding to 1 foot or
less. Nearshore waters smooth to a light chop.
.SATURDAY NIGHT...North to northeast winds 5 to 10 knots. Seas 1
foot or less. Nearshore waters smooth to a light chop.

$$

GMZ042>044-181530-
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-
1024 PM EST Mon Nov 17 2025

.OVERNIGHT...Northeast to east winds 5 to 10 knots. Seas 1 foot
or less, building to around 1 foot. Nearshore waters smooth to a
light chop.
.TUESDAY...Northeast to east winds near 10 knots, increasing to 10
to 15 knots. Seas building to 1 to 2 feet. Nearshore waters a
light chop, becoming a light to moderate chop.
.TUESDAY NIGHT...East winds 10 to 15 knots. Seas building to 2 to
3 feet. Nearshore waters a light to moderate chop. Isolated
showers.
.WEDNESDAY...Northeast to east winds 10 to 15 knots. Seas 2 to
3 feet. Nearshore waters a light to moderate chop.
.WEDNESDAY NIGHT...Northeast to east winds near 15 knots. Seas
2 to 3 feet. Nearshore waters a moderate chop.
.THURSDAY...Northeast to east winds near 15 knots. Seas 2 to
3 feet. Nearshore waters a moderate chop.
.THURSDAY NIGHT...Northeast to east winds near 15 knots. Seas
2 to 3 feet. Nearshore waters a moderate chop.
.FRIDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Nearshore
waters a light to moderate chop.
.FRIDAY NIGHT...East winds 10 to 15 knots. Seas around 2 feet.
Nearshore waters a light to moderate chop.
.SATURDAY...East winds near 10 knots, decreasing to 5 to 10
knots. Seas 1 to 2 feet, subsiding to around 1 foot. Nearshore
waters a light chop, becoming smooth to a light chop.
.SATURDAY NIGHT...Northeast winds 5 to 10 knots. Seas around 1
foot. Nearshore waters smooth to a light chop.

$$

GMZ052>055-072>075-181530-
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-
1024 PM EST Mon Nov 17 2025

.OVERNIGHT...Northeast to east winds near 10 knots. Seas 1 to
2 feet. Wave Detail: Northeast 2 feet at 3 seconds.
.TUESDAY...Northeast to east winds 10 to 15 knots. Seas building
to 2 to 3 feet. Wave Detail: Northeast to east 3 feet at 4
seconds. Isolated showers.
.TUESDAY NIGHT...Northeast to east winds near 15 knots. Seas 2 to
4 feet, occasionally to 5 feet. Wave Detail: Northeast to east 4
feet at 5 seconds. Isolated showers.
.WEDNESDAY...Northeast to east winds near 15 knots. Seas 2 to 4
feet, occasionally to 5 feet. Isolated showers.
.WEDNESDAY NIGHT...Northeast to east winds 15 to 20 knots. Seas
3 to 4 feet, occasionally to 5 feet.
.THURSDAY...Northeast to east winds 15 to 20 knots. Seas 3 to
5 feet, occasionally to 6 feet.
.THURSDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 5 feet,
occasionally to 6 feet. Isolated showers.
.FRIDAY...East winds near 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Isolated showers.
.FRIDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Isolated showers.
.SATURDAY...East winds near 10 knots. Seas 2 to 3 feet, subsiding
to around 2 feet. Isolated showers.
.SATURDAY NIGHT...Northeast to east winds near 10 knots. Seas
subsiding to 1 to 2 feet. Isolated showers.

$$

GMZ033-034-181530-
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-
1024 PM EST Mon Nov 17 2025

.OVERNIGHT...North to northeast winds 5 to 10 knots, becoming
northeast to east. Seas around 1 foot. Wave Detail: Northwest to
north 1 foot at 4 seconds.
.TUESDAY...East winds 10 to 15 knots, briefly decreasing to 5 to
10 knots in the afternoon. Seas 1 to 2 feet. Wave Detail: East 2
feet at 3 seconds and northwest 1 foot at 5 seconds.
.TUESDAY NIGHT...East winds increasing to 10 to 15 knots. Seas 2
to 3 feet. Wave Detail: East 2 feet at 3 seconds. Isolated
showers.
.WEDNESDAY...Northeast to east winds 10 to 15 knots, briefly
decreasing to near 10 knots. Seas 2 to 3 feet.
.WEDNESDAY NIGHT...Northeast to east winds increasing to 10 to 15
knots. Seas 2 to 3 feet.
.THURSDAY...East winds 10 to 15 knots. Seas 2 to 3 feet.
.THURSDAY NIGHT...East winds near 15 knots. Seas 2 to 3 feet.
.FRIDAY...East winds 10 to 15 knots. Seas 2 to 3 feet.
.FRIDAY NIGHT...East winds 10 to 15 knots. Seas 1 to 2 feet.
Isolated showers.
.SATURDAY...East winds near 10 knots, decreasing to 5 to 10
knots. Seas 1 to 2 feet, subsiding to around 1 foot.
.SATURDAY NIGHT...North to northeast winds 5 to 10 knots. Seas
1 foot or less.

$$