GMZ005-142130-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
425 AM EST Sun Dec 14 2025
.SYNOPSIS...Showers during the early morning will gradually
diminish today. Generally gentle northeast to east breezes this
morning will back to the north and freshen as a frontal boundary
approaches the Florida Keys marine zones tonight. In the wake of
the front, fresh to strong northeasterly breezes are expected
through at least Tuesday. Breezes slacken starting Wednesday but
will remain gentle to moderate at times.
The Approximate Shoreward Edge of the Gulf Stream as of December 8...
15 NM South of Dry Tortugas Light...on Loggerhead Key.
13 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
14 NM South of Sand Key Light...off Key West.
18 NM South of Looe Key...off Big Pine Key.
23 NM Southeast of Sombrero Key Light...off Marathon.
18 NM Southeast of Alligator Reef Light...off Islamorada.
12 NM Southeast of Molasses Reef Light...off Key Largo.
8 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 and RTOFS.
$$
GMZ033-034-142130-
Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM
out and beyond 5 fathoms-
Gulf of America including Dry Tortugas and Rebecca Shoal Channel-
425 AM EST Sun Dec 14 2025
TODAY
Northeast to east winds 5 to 10 knots, becoming
northwest to north and increasing to 10 to 15 knots. Seas 1 to 2
feet. Wave Detail: East to southeast 2 feet at 4 seconds and
northwest to north 1 foot at 2 seconds. Scattered showers.
TONIGHT
North to northeast winds near 15 knots, increasing to 15
to 20 knots. Seas 2 to 3 feet, building to 3 to 5 feet,
occasionally to 6 feet. Wave Detail: North to northeast 3 feet at
4 seconds, becoming northwest to north 4 feet at 5 seconds.
Isolated showers.
MONDAY
Northeast winds near 20 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: North to northeast 6 feet at
6 seconds.
MONDAY NIGHT
Northeast to east winds near 20 knots, decreasing
to 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet.
Isolated showers.
TUESDAY
Northeast to east winds 15 to 20 knots. Seas 3 to
5 feet, occasionally to 6 feet.
TUESDAY NIGHT
East winds 15 to 20 knots, decreasing to near 15
knots. Seas subsiding to 2 to 3 feet.
WEDNESDAY
East winds decreasing to 10 to 15 knots. Seas 2 to 3
feet, subsiding to 1 to 2 feet. Isolated showers.
WEDNESDAY NIGHT
East winds 10 to 15 knots. Seas 1 to 2 feet.
THURSDAY AND THURSDAY NIGHT
East winds near 10 knots. Seas 1
to 2 feet. Isolated showers.
$$
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