Stormy Weather Along the East Coast; Extended Warm-up for the West

A strong low pressure system will bring heavy rain, gusty winds, and thunderstorms along the east coast. Isolated severe thunderstorms could produce damaging winds and a few tornadoes in the Southeast. Heavy rains may result in excessive runoff and flash flooding. Building high pressure out west will produce above normal temperatures, especially, in the Pacific Northwest.
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Hazardous Weather Conditions

Last Update: 427 PM EDT Mon Apr 23 2018

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Key West, FL Local Forecast Office

5NM E Vaca Cut FL

Marine Zone Forecast


Synopsis: An expansive area of high pressure covering the entire Eastern United States will slide into the western North Atlantic Ocean over the next several days, as a weak area of low pressure migrates eastward and across the Southeast United States before lifting up the Eastern Seaboard next week. Meanwhile, a trough of low pressure will likely pass through our region late Tuesday night and early Wednesday.

The Approximate Shoreward Edge of the Gulf Stream as of April 21, 2018...

17 NM South of Dry Tortugas Light...on Loggerhead Key. 16 NM South of Cosgrove Shoal Light...off the Marquesas Keys. 21 NM South of Sand Key Light...off Key West. 32 NM South of Looe Key...off Big Pine Key. 36 NM South of Sombrero Key Light...off Marathon. 18 NM Southeast of Alligator Reef Light...off Islamorada. 11 NM Southeast of Molasses Reef Light...off Key Largo. 8 NM East of Carysfort Reef Light...off Ocean Reef.

Gulf Stream Information Courtesy of the Naval Oceanographic Office.

Tonight
Southeast to south winds near 10 knots, decreasing to 5 to 10 knots. Seas 1 to 2 feet. Nearshore waters smooth to a light chop. Isolated showers.
Tuesday
Southwest to west winds 5 to 10 knots. Seas 1 to 2 feet. Nearshore waters smooth to a light chop. Isolated showers.
Tuesday Night
West to northwest winds 5 to 10 knots. Seas 1 to 2 feet. Nearshore waters smooth to a light chop. Scattered showers.
Wednesday
Northwest winds 5 to 10 knots. Seas around 1 foot. nearshore waters smooth to a light chop. Isolated showers.
Wednesday Night
Northwest to north winds 5 to 10 knots. Seas 1 to 2 feet. Nearshore waters smooth to a light chop.
Thursday
North to northeast winds 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop.
Thursday Night
Northwest to north winds 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop. Isolated showers.
Friday
North to northeast winds near 5 knots. Seas 1 foot or less. Nearshore waters smooth. Isolated showers.
Friday Night
Variable winds 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop. Isolated showers.
Saturday
Northwest winds 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop. Isolated showers.
Saturday Night
North winds 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop. Isolated showers.
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ABOUT THIS FORECAST

Last Update: 427 PM EDT Mon Apr 23 2018
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