Excessive Heat Spreads East; Many Areas with Heavy Rain Threats

Hot and muggy conditions are forecast to continue across the Midwest and Northeast, while spreading eastward. A frontal boundary bringing very heavy rains to the Upper Midwest will sag southward bringing cooler temperatures to areas to the north, including the city of Chicago. Heavy rains will also be possible along the Texas Gulf Coast from a tropical disturbance.
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Last Update: 439 AM EDT Mon Jun 18 2018

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Key West, FL Local Forecast Office

5NM E Vaca Cut FL

Marine Zone Forecast


Synopsis: An area of high pressure centered east of the Delmarva will slide southeast deeper into the western North Atlantic today. A ridge of high pressure will extend westward across northern Florida tonight and Tuesday. This ridge of high pressure will slowly shift southward Tuesday night through Friday.

The Approximate Shoreward Edge of the Gulf Stream current, as of June 16th.

38 NM South of Dry Tortugas Light, on Loggerhead Key. 17 NM South of Cosgrove Shoal Light, off the Marquesas Keys. 14 NM South of Sand Key Light, off Key West. 15 NM South of Looe Key, off Big Pine Key. 17 NM South of Sombrero Key Light, off Marathon. 15 NM Southeast of Alligator Reef Light, off Islamorada. 12 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.

Today
East winds near 10 knots. Seas 1 to 2 feet. Nearshore waters a light chop. Isolated showers and thunderstorms this morning, scattered showers and thunderstorms developing this afternoon.
Tonight And Tuesday
East winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. Scattered showers and isolated thunderstorms, especially before midnight.
Tuesday Night
East winds near 5 knots. Seas 1 foot or less. nearshore waters smooth. Scattered showers and isolated thunderstorms.
Wednesday
Southeast to south winds near 5 knots. Seas 1 foot or less. Nearshore waters smooth. Scattered showers and isolated thunderstorms.
Wednesday Night
South winds near 5 knots. Seas 1 foot or less. Nearshore waters smooth. Isolated showers and thunderstorms.
Thursday
South to southwest winds near 5 knots. Seas 1 foot or less. Nearshore waters smooth. Isolated showers and thunderstorms.
Thursday Night
Variable winds near 5 knots. Seas 1 foot or less. Nearshore waters smooth. Isolated showers and thunderstorms.
Friday And Friday Night
Variable winds near 5 knots. Seas 1 foot or less. Nearshore waters smooth. Scattered showers and isolated thunderstorms.
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Last Update: 439 AM EDT Mon Jun 18 2018
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