Heavy Rainfall Possible Across the Central U.S.; Poor Air Quality Across the Northwest and North Central States

Thunderstorms will produce locally heavy rainfall and possibly some flash flooding across central portions of the country through tonight, with a few strong to locally severe thunderstorms possible. Otherwise, smoke from the wildfires burning across western North America will continue to create poor air quality across northern portions of the country.
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Last Update: 1032 AM EDT Sun Aug 19 2018

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Key West, FL Local Forecast Office

16NM NNW Vaca Cut FL

Marine Zone Forecast


Synopsis: A western Atlantic ridge axis will extend across the Florida peninsula this afternoon through Thursday.

The Approximate Shoreward Edge of the Gulf Stream as of August 16...

3 NM South of Dry Tortugas Light...on Loggerhead Key. 20 NM South of Cosgrove Shoal Light...off the Marquesas Keys. 13 NM South of Sand Key Light...off Key West. 4 NM South of Looe Key...off Big Pine Key. 5 NM South of Sombrero Key Light...off Marathon. 1 NM Southeast of Alligator Reef Light...off Islamorada. 1 NM Southeast of Molasses Reef Light...off Key Largo. 1 NM East of Carysfort Reef Light...off Ocean Reef.

Gulf Stream Information Courtesy of the Naval Oceanographic Office.

This Afternoon
Southeast winds near 10 knots. Seas around 1 foot. Nearshore waters a light chop. Scattered showers and isolated thunderstorms.
Tonight Through Tuesday
East to southeast winds near 10 knots. Seas around 1 foot. Nearshore waters a light chop. Scattered showers and isolated thunderstorms.
Tuesday Night
East to southeast winds near 10 knots. seas around 1 foot. Nearshore waters a light chop. Scattered showers and isolated thunderstorms.
Wednesday
East to southeast winds 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop. Scattered showers and isolated thunderstorms.
Wednesday Night Through Thursday Night
East to southeast winds near 10 knots. Seas around 1 foot. Nearshore waters a light chop. Scattered showers and isolated thunderstorms.
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ABOUT THIS FORECAST

Last Update: 1032 AM EDT Sun Aug 19 2018
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