592
FZUS52 KKEY 120232
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
1032 PM EDT Sat Oct 11 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.

GMZ005-121445-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1032 PM EDT Sat Oct 11 2025

.SYNOPSIS...Northerly winds will continue to filter in behind the
recent frontal passage today. Expect northerly swells across our
western marine zones overnight. In the wake of the front, high
pressure builds across the eastern United States leading to
freshening northeasterly breezes heading towards mid- week.

The Approximate Shoreward Edge of the Gulf Stream as of October
08...

46 NM South of Dry Tortugas Light...on Loggerhead Key.
27 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
21 NM South of Sand Key Light...off Key West.
30 NM South of Looe Key...off Big Pine Key.
14 NM Southeast of Sombrero Key Light...off Marathon.
 8 NM Southeast of Alligator Reef Light...off Islamorada.
 7 NM Southeast of Molasses Reef Light...off Key Largo.
 6 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.

$$

GMZ031-121445-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
1032 PM EDT Sat Oct 11 2025

.OVERNIGHT...Northwest to north winds 5 to 10 knots, becoming
north near 10 knots. Bay waters smooth to a light chop, becoming a
light chop. Isolated showers.
.SUNDAY...North to northeast winds near 10 knots, becoming northwest
5 to 10 knots. Bay waters a light chop, becoming smooth to a light
chop. Isolated showers.
.SUNDAY NIGHT...West to northwest winds near 5 knots, becoming
north after midnight. Bay waters smooth. Isolated showers.
.MONDAY...North to northeast winds near 5 knots. Bay waters
smooth. Isolated showers.
.MONDAY NIGHT...Northeast winds 5 to 10 knots, increasing to near 10
knots after midnight. Bay waters smooth to a light chop, becoming
a light chop. Isolated showers.
.TUESDAY...Northeast winds 10 to 15 knots. Bay waters a light to
moderate chop. Isolated showers.
.TUESDAY NIGHT...Northeast winds near 15 knots. Bay waters a
moderate chop. Isolated showers.
.WEDNESDAY...Northeast winds near 15 knots, decreasing to near 10
knots. Bay waters a moderate chop, becoming a light chop.
Isolated showers.
.WEDNESDAY NIGHT...Northeast winds 10 to 15 knots. Bay waters a
light to moderate chop. Isolated showers.

$$

GMZ032-035-121445-
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-
1032 PM EDT Sat Oct 11 2025

.OVERNIGHT...Northwest to north winds near 10 knots, becoming
north to northeast. Seas 1 to 2 feet, except 2 to 3 feet west of
the Marquesas Keys due to a northerly swell. Nearshore waters a
light chop. Isolated showers.
.SUNDAY...North to northeast winds near 10 knots, becoming
northwest to north 5 to 10 knots. Seas 1 to 2 feet, except 2 to 3
feet west of the Marquesas Keys due to a northerly swell.
Nearshore waters a light chop, becoming smooth to a light chop.
Isolated showers.
.SUNDAY NIGHT...Northwest to north winds 5 to 10 knots, becoming
north to northeast after midnight. Seas 1 to 2 feet. Nearshore
waters smooth to a light chop. Isolated showers.
.MONDAY...North to northeast winds 5 to 10 knots. Seas 1 to 2
feet. Nearshore waters smooth to a light chop. Isolated showers.
.MONDAY NIGHT...North to northeast winds 5 to 10 knots,
becoming northeast and increasing to 10 to 15 knots after
midnight. Seas 1 to 2 feet, except building to around 2 feet west
of the Marquesas Keys. Nearshore waters smooth to a light chop,
becoming a light to moderate chop. Isolated showers.
.TUESDAY...Northeast 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. Isolated showers.
.TUESDAY NIGHT...Northeast winds near 15 knots, increasing to 15
to 20 knots. Seas 1 to 2 feet, building to 1 to 3 feet. West of
the Marquesas Keys, seas 2 to 3 feet, building to around 3 feet.
Nearshore waters a moderate chop, becoming choppy. Isolated
showers.
.WEDNESDAY...Northeast winds 15 to 20 knots, decreasing to 10 to
15 knots. Seas 1 to 3 feet, except around 3 feet west of the
Marquesas Keys. Nearshore waters choppy, becoming a light to
moderate chop. Isolated showers.
.WEDNESDAY NIGHT...Northeast 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. Isolated showers.

$$

GMZ042>044-121445-
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-
1032 PM EDT Sat Oct 11 2025

.OVERNIGHT...Northwest to north winds 5 to 10 knots, becoming
north to northeast near 10 knots. Seas 1 to 2 feet, except 2 to 3
feet west of Cosgrove Shoal Light due a northerly swell.
Nearshore waters smooth to a light chop, becoming a light chop.
Isolated showers.
.SUNDAY...North to northeast winds 5 to 10 knots. Seas 1 to
2 feet, except 2 to 3 feet west of Cosgrove Shoal Light due a
northerly swell. Nearshore waters smooth to a light chop. Isolated
showers.
.SUNDAY NIGHT...Northwest to north winds 5 to 10 knots, becoming
north to northeast after midnight. Seas 1 to 2 feet. Nearshore
waters smooth to a light chop, becoming smooth. Isolated showers.
.MONDAY...North to northeast winds 5 to 10 knots. Seas 1 to
2 feet. Nearshore waters smooth to a light chop. Isolated
showers.
.MONDAY NIGHT...Northeast winds 5 to 10 knots, increasing to
10 to 15 knots after midnight. Seas 1 to 2 feet, building to
around 2 feet. Nearshore waters smooth to a light chop, becoming a
light to moderate chop. Isolated showers.
.TUESDAY...Northeast winds near 15 knots. Seas 2 to 3 feet.
Nearshore waters a moderate chop. Isolated showers.
.TUESDAY NIGHT...Northeast winds 15 to 20 knots. Seas 2 to
4 feet, occasionally to 5 feet. Nearshore waters choppy.
Scattered showers.
.WEDNESDAY...Northeast winds 15 to 20 knots, decreasing to 10 to
15 knots. Seas 2 to 4 feet, occasionally to 5 feet, subsiding to
2 to 3 feet. Nearshore waters choppy, becoming a light to moderate
chop. Scattered showers.
.WEDNESDAY NIGHT...Northeast winds 10 to 15 knots. Seas around 2
feet. Nearshore waters a light to moderate chop. Isolated
showers.

$$

GMZ052>055-072>075-121445-
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-
1032 PM EDT Sat Oct 11 2025

.OVERNIGHT...Northwest winds near 10 knots. Seas 2 to 3 feet,
except 3 to 4 feet west of Halfmoon Shoal Light due to a northerly
swell. Wave Detail: West 3 feet at 7 seconds. Scattered showers.
.SUNDAY...North winds near 10 knots, decreasing to 5 to 10 knots.
Seas 2 to 3 feet due to a north to northeast swell. Wave Detail:
West to northwest 2 feet at 7 seconds. Isolated showers.
.SUNDAY NIGHT...West to northwest winds near 5 knots, becoming
north. Seas 1 to 2 feet. Isolated showers.
.MONDAY...North winds near 5 knots, becoming north to northeast
and increasing to 5 to 10 knots. Seas 1 to 2 feet. Isolated
showers.
.MONDAY NIGHT...Northeast winds near 10 knots. Seas around 2
feet. Scattered showers.
.TUESDAY...Northeast winds 10 to 15 knots, increasing to near 15
knots. Seas 2 to 4 feet, occasionally to 5 feet, building to 3 to
4 feet, occasionally to 5 feet. Scattered showers.
.TUESDAY NIGHT...Northeast winds 15 to 20 knots. Seas 3 to
5 feet, occasionally to 6 feet. Scattered showers.
.WEDNESDAY...Northeast winds near 15 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Scattered showers.
.WEDNESDAY NIGHT...Northeast winds near 15 knots. Seas 3 to 4
feet, occasionally to 5 feet. Isolated showers.

$$

GMZ033-034-121445-
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-
1032 PM EDT Sat Oct 11 2025

.OVERNIGHT...Northwest to north winds 10 to 15 knots, becoming
north to northeast. Seas 2 to 4 feet due to a northerly swell.
Wave Detail: Northwest to north 3 feet at 6 seconds. Isolated
showers.
.SUNDAY...North to northeast winds near 10 knots. Seas 2 to
3 feet due to a northerly swell. Wave Detail: Northwest 2 feet at
6 seconds. Scattered showers.
.SUNDAY NIGHT...North winds 5 to 10 knots, becoming north to
northeast. Seas 2 to 3 feet. Isolated showers.
.MONDAY...North to northeast winds 5 to 10 knots, increasing to
near 10 knots. Seas 2 to 3 feet. Isolated showers.
.MONDAY NIGHT...North to northeast winds near 10 knots, becoming
northeast and increasing to 10 to 15 knots. Seas 2 to 3 feet.
Isolated showers.
.TUESDAY...Northeast winds 10 to 15 knots. Seas 2 to 3 feet.
Isolated showers.
.TUESDAY NIGHT...Northeast winds near 15 knots, increasing to 15
to 20 knots. Seas 2 to 3 feet, building to 2 to 4 feet,
occasionally to 5 feet. Isolated showers.
.WEDNESDAY...Northeast winds 15 to 20 knots, decreasing to 10 to
15 knots. Seas 2 to 4 feet, occasionally to 5 feet, subsiding to
2 to 3 feet. Isolated showers.
.WEDNESDAY NIGHT...Northeast winds near 15 knots. Seas 2 to 3
feet. Isolated showers.

$$