Heavy Snow For Portions of the Northeast; Great Lakes

Moderate to heavy snow will return to the Northeast and New England over the next couple of days. Heavy Lake Effect Snow will continue to the lee of the Great Lakes. Light snow will fall across portions of the Tennessee Valley; working into the Mid-Atlantic by mid-week. Meanwhile, elevated fire weather conditions will continue in southern California.
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Last Update: 1008 PM EST Mon Dec 11 2017

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Key West, FL Local Forecast Office

12NM SSW Tennessee Reef Light FL

Marine Zone Forecast


Synopsis: An area of high pressure will settle southward over the Florida Keys overnight. A weak cold front will approach South Florida Tuesday. This cold front will pass through the Florida Keys Tuesday night. An area of high pressure will slide eastward across the Gulf of Mexico and Florida peninsula Wednesday night through Thursday night.

The Approximate Shoreward Edge of the Gulf Stream current, as of December 9th, 2017,

16 NM South of Dry Tortugas Light, on Loggerhead Key. 35 NM South of Cosgrove Shoal Light, off the Marquesas Keys. 41 NM South of Sand Key Light, off Key West. 32 NM South of Looe Key, off Big Pine Key. 15 NM South of Sombrero Key Light, off Marathon. 9 NM Southeast of Alligator Reef Light, off Islamorada. 2 NM Southeast of Molasses Reef Light, off Key Largo. 2 NM East of Carysfort Reef Light, off Ocean Reef.

Gulf Stream Information Courtesy of the Naval Oceanographic Office.

Overnight
North winds 10 to 15 knots. Seas 3 to 4 feet.
Tuesday
Northwest to north winds near 15 knots. Seas 3 to 5 feet. Isolated showers.
Tuesday Night
Northwest to north winds 15 to 20 knots. Seas 4 to 6 feet. Isolated showers.
Wednesday
North winds 15 to 20 knots, decreasing to 10 to 15 knots in the afternoon. Seas 4 to 6 feet, subsiding to 3 to 5 feet.
Wednesday Night
North winds 10 to 15 knots. Seas 3 to 4 feet.
Thursday
North winds near 10 knots. Seas 2 to 4 feet.
Thursday Night
Northwest to north winds near 10 knots. Seas 2 to 3 feet.
Friday
Northwest winds 10 to 15 knots, increasing to near 15 knots in the afternoon. Seas 2 to 4 feet, building to 3 to 5 feet. Isolated showers.
Friday Night
West to northwest winds 15 to 20 knots, becoming north and increasing to near 20 knots by midnight. Seas 4 to 5 feet, building to 5 to 7 feet. Isolated showers.
Saturday
North to northeast winds near 20 knots. Seas 5 to 7 feet. Isolated showers.
Saturday Night
Northeast winds 15 to 20 knots. Seas 4 to 6 feet. Isolated showers.
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Last Update: 1008 PM EST Mon Dec 11 2017
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