Unsettled Across the West; Increasingly Rainy with a Few Storms in the South

A frontal system will bring heavy precipitation, including mountain snowfall to much of the Pacific Northwest, northern California, and portions of the Rockies through Tuesday. Elsewhere, wet weather will return to much of the South with locally heavy rainfall; a few strong to severe thunderstorms will also be possible in this region by Tuesday.
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Last Update: 303 PM EST Mon Dec 18 2017

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Key West, FL Local Forecast Office

35NM SE Sombrero Key Light FL

Marine Zone Forecast


...SMALL CRAFT SHOULD EXERCISE CAUTION...
Synopsis: A high pressure cell will persist from the subtropical North Atlantic to the eastern Gulf of Mexico, tonight through Saturday.

The Approximate Shoreward Edge of the Gulf Stream as of December 16, 2017,

30 NM South of Dry Tortugas Light, on Loggerhead Key. 17 NM South of Cosgrove Shoal Light, off the Marquesas Keys. 26 NM South of Sand Key Light, off Key West. 32 NM South of Looe Key, off Big Pine Key. 29 NM South of Sombrero Key Light, off Marathon. 14 NM Southeast of Alligator Reef Light, off Islamorada. 9 NM Southeast of Molasses Reef Light, off Key Largo. 6 NM East of Carysfort Reef Light, off Ocean Reef.

Gulf Stream Information Courtesy of the Naval Oceanographic Office.

Tonight
East winds 15 to 20 knots. Seas 3 to 5 feet.
Tuesday
East winds 15 to 20 knots. Seas 3 to 5 feet.
Tuesday Night
East to southeast winds 15 to 20 knots. Seas 3 to 5 feet.
Wednesday
East to southeast winds 10 to 15 knots. Seas 2 to 4 feet.
Wednesday Night
East to southeast winds 10 to 15 knots. Seas 1 to 3 feet.
Thursday
East winds 10 to 15 knots. Seas 1 to 3 feet.
Thursday Night
East winds 10 to 15 knots. Seas 1 to 3 feet.
Friday
East to southeast winds near 15 knots. Seas 2 to 3 feet.
Friday Night
East to southeast winds 10 to 15 knots. Seas 2 to 4 feet.
Saturday
East winds 10 to 15 knots. Seas 2 to 3 feet.
Saturday Night
East winds near 15 knots. Seas 2 to 4 feet.
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ABOUT THIS FORECAST

Last Update: 303 PM EST Mon Dec 18 2017
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