Severe Thunderstorms Possible From The Plains To The Great Lakes, Heat Wave To Continue Over The Southern U.S.

Scattered strong to severe thunderstorms capable of damaging winds, large hail, isolated tornadoes, and heavy rainfall will be possible through tonight from the central Plains to the Great Lakes and Northeast U.S. The heavy rainfall could lead to localized flash flooding. Excessive heat will persist across the southern Plains and Desert Southwest early this week.
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Hazardous Weather Conditions

Last Update: 1031 AM EDT Sun Aug 18 2019

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Key West, FL Local Forecast Office

7NM E Vaca Cut FL

Marine Zone Forecast


Synopsis: A weak high pressure ridge axis will be located across Central Florida through Wednesday. The Atlantic ridge will lift up across North Florida on Thursday. Gentle easterly breezes over the Keys waters will become moderate on Monday in advance of a weak tropical wave that will brush by on Monday evening.

The Approximate Shoreward Edge of the Gulf Stream as of August 17, 2019...

44 NM South of Dry Tortugas Light...on Loggerhead Key. 47 NM South of Cosgrove Shoal Light...off the Marquesas Keys. 49 NM South of Sand Key Light...off Key West. 53 NM South of Looe Key...off Big Pine Key. 48 NM South of Sombrero Key Light...off Marathon. 18 NM Southeast of Alligator Reef Light...off Islamorada. 12 NM Southeast of Molasses Reef Light...off Key Largo. 3 NM East of Carysfort Reef Light...off Ocean Reef.

Gulf Stream Information Courtesy of the Naval Oceanographic Office.

This Afternoon
East winds 10 to 15 knots. Seas 1 to 2 feet. nearshore waters a light chop.
Tonight
Northeast to east winds 10 to 15 knots. Seas 1 to 3 feet. Nearshore waters a light to moderate chop. Isolated showers and thunderstorms in the evening, then scattered showers and isolated thunderstorms after midnight.
Monday
East winds near 15 knots. Seas 2 to 3 feet. Nearshore waters a moderate chop. Scattered showers and thunderstorms.
Monday Night And Tuesday
East to southeast winds 10 to 15 knots. Seas 1 to 3 feet. Nearshore waters a light to moderate chop. Scattered showers and thunderstorms.
Tuesday Night
East to southeast winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop. Scattered showers and thunderstorms.
Wednesday
East winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop. Scattered showers and thunderstorms.
Wednesday Night
East to southeast winds near 10 knots. Seas 1 to 2 feet. Nearshore waters a light chop. Scattered showers and thunderstorms.
Thursday And Thursday Night
East winds near 10 knots. Seas 1 to 2 feet. Nearshore waters a light chop. Scattered showers and thunderstorms.
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ABOUT THIS FORECAST

Last Update: 1031 AM EDT Sun Aug 18 2019
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