GMZ005-091530-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1023 PM EST Sat Nov 8 2025
.SYNOPSIS...High pressure will continue to slide eastward across
the central North Atlantic this afternoon through Sunday. This
will result in mainly light east to southeast breezes, potentially
becoming variable at times. A potent cold front will push through
the Florida Keys marine zones on Monday with fresh to strong
northerlies expected in its wake early next week. While the next
high builds in behind the front, winds will shift out of the
northeast and gradually slacken. Moderate to occasionally fresh
breezes will remain possible.
The Approximate Shoreward Edge of the Gulf Stream as of November
4...
42 NM South of Dry Tortugas Light...on Loggerhead Key.
42 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
30 NM South of Sand Key Light...off Key West.
29 NM South of Looe Key...off Big Pine Key.
27 NM Southeast of Sombrero Key Light...off Marathon.
14 NM Southeast of Alligator Reef Light...off Islamorada.
4 NM Southeast of Molasses Reef Light...off Key Largo.
3 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.
$$
GMZ042>044-091530-
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-
1023 PM EST Sat Nov 8 2025
OVERNIGHT
East to southeast winds near 5 knots. Seas 1 foot or
less. Nearshore waters smooth. Isolated showers.
SUNDAY
Southeast winds near 5 knots, becoming south to
southwest. Seas 1 foot or less. Nearshore waters smooth. Isolated
showers.
SUNDAY NIGHT
Northwest winds 5 to 10 knots. Seas 1 foot or
less. Nearshore waters smooth to a light chop. Isolated showers.
MONDAY
Northwest winds 15 to 20 knots, increasing to northwest
to north 25 to 30 knots. Seas 1 to 2 feet. West of Cosgrove Shoal
Light, seas 1 to 2 feet, building to 5 to 7 feet, occasionally to
9 feet in the afternoon. Nearshore waters choppy, becoming
extremely rough. Isolated showers.
MONDAY NIGHT
North winds 25 to 30 knots. Seas 2 to 4 feet,
occasionally to 5 feet, except 6 to 9 feet, occasionally to
11 feet west of Cosgrove Shoal Light. Nearshore waters extremely
rough.
TUESDAY
North to northeast winds 25 to 30 knots, becoming
20 to 25 knots in the afternoon. Seas 2 to 4 feet, occasionally
to 5 feet, except 5 to 8 feet, occasionally to 10 feet west of
Cosgrove Shoal Light. Nearshore waters extremely rough, becoming
very rough.
TUESDAY NIGHT
Northeast winds near 20 knots. Seas 2 to 4 feet,
occasionally to 5 feet, except 4 to 6 feet, occasionally to
8 feet west of Cosgrove Shoal Light. Nearshore waters rough.
WEDNESDAY
Northeast to east winds 15 to 20 knots. Seas 2 to
4 feet, occasionally to 5 feet, except 4 to 5 feet, occasionally
to 6 feet west of Cosgrove Shoal Light. Nearshore waters choppy.
WEDNESDAY NIGHT
Northeast winds 15 to 20 knots. Seas 2 to
4 feet, occasionally to 5 feet. Nearshore waters choppy.
THURSDAY
Northeast winds 15 to 20 knots. Seas 2 to 3 feet.
Nearshore waters choppy.
THURSDAY NIGHT
Northeast winds 15 to 20 knots. Seas around
2 feet. Nearshore waters choppy.
$$
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