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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Hazardous Weather Conditions

Last Update: 1027 PM EDT Sun Jun 17 2018

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Key West, FL Local Forecast Office

12NM SSW Tennessee Reef Light FL

Marine Zone Forecast


Synopsis: An area of high pressure centered just off the Carolina coastline will slide southeast into the western North Atlantic overnight. A ridge of high pressure will extend westward across northern Florida through Tuesday. This ridge of high pressure will slowly shift southward Tuesday night through Friday night.

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.

Overnight
East winds 10 to 15 knots. Seas 1 to 3 feet. Scattered showers and isolated thunderstorms.
Monday And Monday Night
East to southeast winds near 10 knots. Seas 1 to 3 feet. Scattered showers and thunderstorms.
Tuesday And Tuesday Night
Southeast winds 5 to 10 knots. Seas 1 to 2 feet. Scattered showers and isolated thunderstorms.
Wednesday
Southeast to south winds near 5 knots. Seas 1 to 2 feet. Scattered showers and isolated thunderstorms.
Wednesday Night
Southeast to south winds near 5 knots. Seas 1 to 2 feet. Scattered showers and isolated thunderstorms.
Thursday
South winds near 5 knots. Seas around 1 foot. Scattered showers and isolated thunderstorms.
Thursday Night Through Friday Night
Southeast winds 5 to 10 knots. Seas 1 to 2 feet. Scattered showers and isolated thunderstorms.
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ABOUT THIS FORECAST

Last Update: 1027 PM EDT Sun Jun 17 2018
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