GMZ005-052130-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
427 AM EST Thu Feb 5 2026
.SYNOPSIS...A strong cold front will push through the Keys marine
zones today and this evening. This will bring another push of
freshened breezes and building seas for Friday into the weekend,
as high pressure builds over the Mid- Atlantic. As the high slides
southeastward Sunday through early next week, breezes will
slacken.
The Approximate Shoreward Edge of the Gulf Stream as of February
4...
17 NM South of Dry Tortugas Light...on Loggerhead Key.
15 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
14 NM South of Sand Key Light...off Key West.
17 NM South of Looe Key...off Big Pine Key.
14 NM Southeast of Sombrero Key Light...off Marathon.
9 NM Southeast of Alligator Reef Light...off Islamorada.
4 NM Southeast of Molasses Reef Light...off Key Largo.
5 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.
$$
GMZ052-053-072-073-052130-
Straits of Florida from Ocean Reef to Craig Key out 20 NM-
Straits of Florida from Craig Key to west end of Seven Mile
Bridge out 20 NM-
Straits of Florida from Ocean Reef to Craig Key 20 to 60 NM out-
Straits of Florida from Craig Key to west end of Seven Mile
Bridge 20 to 60 NM out-
427 AM EST Thu Feb 5 2026
SMALL CRAFT ADVISORY LIKELY WILL BE REQUIRED THIS AFTERNOON
TODAY
Variable winds 5 to 10 knots, becoming southwest to west
near 15 knots late this morning, then becoming west to northwest
near 25 knots late. Seas 1 to 2 feet, building to 2 to 4 feet,
occasionally to 5 feet. Wave Detail: Northeast 1 foot at 4
seconds, becoming west 3 feet at 4 seconds and northeast 1 foot at
4 seconds. Scattered showers.
TONIGHT
Northwest winds 25 to 30 knots, decreasing to near 25
knots after midnight. Seas 5 to 8 feet, occasionally to 10 feet.
Wave Detail: Northwest 7 feet at 6 seconds.
FRIDAY
Northwest winds near 20 knots, becoming west to
northwest 15 to 20 knots. Seas 5 to 7 feet, occasionally to 9
feet, subsiding to 4 to 5 feet, occasionally to 7 feet. Wave
Detail: Northwest to north 6 feet at 7 seconds and northeast 4
feet at 8 seconds.
FRIDAY NIGHT
Northwest winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet.
SATURDAY
Northwest winds 15 to 20 knots, decreasing to near 15
knots. Seas 3 to 5 feet, occasionally to 6 feet, subsiding to 2
to 4 feet, occasionally to 5 feet.
SATURDAY NIGHT
Northwest to north winds 10 to 15 knots,
becoming north to northeast after midnight. Seas 3 to 4 feet,
occasionally to 5 feet.
SUNDAY
Northeast winds near 15 knots, becoming northeast to
east. Seas 3 to 5 feet, occasionally to 6 feet. Isolated showers.
SUNDAY NIGHT
Northeast to east winds near 15 knots. Seas 3 to
5 feet, occasionally to 6 feet.
MONDAY
Northeast to east winds 10 to 15 knots. Seas 2 to
4 feet, occasionally to 5 feet.
MONDAY NIGHT
East winds 10 to 15 knots. Seas 2 to 4 feet,
occasionally to 5 feet.
$$
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