Another Arctic Blast in the East; Eastern U.S. Winter Storm

A powerful Arctic blast will bring dangerously cold, record low temperatures to the upper Ohio Valley, Mid-Atlantic, Gulf Coast and Southeast U.S. this weekend. A rapidly deepening storm will produce widespread heavy snow and wind from the southern Appalachians across the Carolinas and southern Virginia into Sunday. Storm-force winds and coastal flooding will be possible along the East Coast. Read More >

Last Update: 1027 AM EST Sat Jan 31 2026

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Key West, FL Local Forecast Office

33NM S Sand Key Light FL

Marine Zone Forecast


This Afternoon
West to northwest winds near 20 knots early, increasing to northwest 30 to 35 knots. Seas 1 to 2 feet, building to 3 to 5 feet, occasionally to 6 feet. Wave detail: northwest 2 feet at 3 seconds and northeast to east 1 foot at 5 seconds, becoming northwest 5 feet at 5 seconds and northeast to east 1 foot at 5 seconds. Numerous showers.
Tonight
Northwest winds near 35 knots, decreasing to 30 to 35 knots. Seas 7 to 10 feet, occasionally to 13 feet, building to 10 to 14 feet, occasionally to 18 feet. Wave detail: northwest 10 feet at 8 seconds, becoming northwest 13 feet at 9 seconds. isolated showers.
Sunday
Northwest to north winds near 30 knots, decreasing to 20 to 25 knots. Seas 9 to 13 feet, occasionally to 17 feet, subsiding to 7 to 10 feet, occasionally to 13 feet in the afternoon. Wave detail: northwest to north 13 feet at 10 seconds, becoming northwest 10 feet at 10 seconds and northeast 4 feet at 9 seconds. Isolated showers.
Sunday Night
Northwest to north winds near 20 knots, decreasing to 15 to 20 knots. Seas 6 to 9 feet, occasionally to 11 feet, subsiding to 5 to 7 feet, occasionally to 9 feet after midnight.
Monday
North winds 15 to 20 knots, decreasing to near 15 knots. Seas 4 to 6 feet, occasionally to 8 feet.
Monday Night
North to northeast winds near 15 knots. Seas 3 to 5 feet, occasionally to 6 feet.
Tuesday
Northeast winds 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet.
Tuesday Night
East winds 10 to 15 knots. Seas 2 to 3 feet. Isolated showers.
Wednesday
Northeast to east winds near 10 knots. Seas 2 to 3 feet. Isolated showers.
Wednesday Night
Northeast to east winds 5 to 10 knots. Seas 1 to 2 feet. Isolated showers.



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1027 AM EST Sat Jan 31 2026
 
 

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