Excessive Heat in parts of the Central and Southern U.S.

Heat Advisories and Excessive Heat Warnings extend from the Southern Plains into the Mid-Atlantic and Southeast today. High temperatures for these areas will mostly be in the upper 90s. A few locations may exceed 100. Hot temperatures combined with high dew points will create heat index values of 100 to 115 degrees.
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Hazardous Weather Conditions

Last Update: 412 PM EDT Sun Jul 23 2017

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Key West, FL Local Forecast Office

5NM W Florida Bay FL

Marine Zone Forecast


Synopsis: A high pressure cell will extend westward from the subtropical North Atlantic to the Gulf of Mexico tonight through Friday night.

The approximate shoreward edge of the Gulf Stream current, as of July twenty-second, 2017,

7 NM South of Dry Tortugas Light...on Loggerhead Key. 4 NM South of Cosgrove Shoal Light...off the Marquesas Keys. 3 NM South of Sand Key Light...off Key West. 7 NM South of Looe Key...off Big Pine Key. 9 NM South of Sombrero Key Light...off Marathon. 8 NM Southeast of Alligator Reef Light...off Islamorada. 6 NM Southeast of Molasses Reef Light...off Key Largo. 5 NM East of Carysfort Reef Light...off Ocean Reef.

Gulf Stream information courtesy of the Naval Oceanographic Office.

Tonight
East to southeast winds near 10 knots. Bay waters a light chop. Isolated showers and thunderstorms.
Monday Through Tuesday
East to southeast winds near 10 knots. Bay waters a light chop. Scattered showers and thunderstorms.
Tuesday Night And Wednesday
East to southeast winds near 10 knots. Bay waters a light chop. Scattered showers and isolated thunderstorms.
Wednesday Night
East to southeast winds 5 to 10 knots. Bay waters smooth to a light chop. Scattered showers and isolated thunderstorms.
Thursday Through Friday Night
East to southeast winds 5 to 10 knots. Bay waters mostly smooth. Scattered showers and isolated thunderstorms.
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ABOUT THIS FORECAST

Last Update: 412 PM EDT Sun Jul 23 2017
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