Wintry Weather In the West; Increasing Threat For Severe Thunderstorms In the South/Southeast Through Monday

In the West, locally heavy snow is expected in the mountains this weekend, along with cold and windy conditions more typical of February than March. Meanwhile, conditions will be conducive to severe thunderstorms this weekend in parts of the southern Plains and the lower MS Valley. By Monday, significant severe thunderstorms, including strong tornadoes, are possible in the Southeast.

Last Update: 419 PM EDT Sat Mar 17 2018

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Key West, FL Local Forecast Office

6NM WNW Pulaski Shoal Light FL

Marine Zone Forecast

Synopsis: An Atlantic ridge of high pressure will extend across Central Florida tonight, before shifting southward Sunday. A cold front will approach the Florida Keys Tuesday night or Wednesday, with high pressure well to the northwest to build in thereafter.

The Approximate Shoreward Edge of the Gulf Stream current, as of March 15, 2018.

6 NM South of Dry Tortugas Light, on Loggerhead Key. Less than 1 NM South of Cosgrove Shoal Light, off the Marquesas Keys. 1 NM South of Sand Key Light, off Key West. 6 NM South of Looe Key, off Big Pine Key. 7 NM South of Sombrero Key Light, off Marathon. 7 NM Southeast of Alligator Reef Light, off Islamorada. 7 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.

East winds near 10 knots. Seas around 1 foot.
Northeast winds 5 to 10 knots. Seas 1 foot or less.
Sunday Night
Variable winds near 5 knots. Seas 1 foot or less.
Monday And Monday Night
South winds 10 to 15 knots. Seas 1 to 2 feet.
Southwest winds 15 to 20 knots. Seas 2 to 4 feet. Isolated showers.
Tuesday Night
West to northwest winds 15 to 20 knots. Seas 3 to 5 feet. Scattered showers.
Northwest winds near 20 knots. Seas 3 to 5 feet, building to 5 to 8 feet. Isolated showers.
Wednesday Night
Northwest to north winds near 20 knots, decreasing to 15 to 20 knots. Seas 5 to 7 feet, subsiding to 4 to 6 feet. Isolated showers.
Thursday And Thursday Night
Northeast winds 15 to 20 knots. seas 3 to 5 feet.
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Last Update: 419 PM EDT Sat Mar 17 2018
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