Heavy Rains Expected to Impact Parts of the Eastern U.S.

A strong cold front will produce heavy rain will create mainly localized areas of flash flooding to the Great Lakes and Ohio Valley. There is another flash flood threat in the parts of the Southeast and Southern Appalachians.
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Last Update: 951 PM EDT Mon Sep 20 2021

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Detroit/Pontiac, MI Local Forecast Office

6NM SE Lexington MI

Marine Zone Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY AFTERNOON...
Rest Of Tonight
South winds 15 to 20 knots. Mostly cloudy with a chance of light showers and a slight chance of thunderstorms. Waves 2 to 4 feet.
Tuesday
South winds 20 to 25 knots diminishing to 15 to 20 knots early in the afternoon. A chance of light showers and a slight chance of thunderstorms in the morning, then showers and a slight chance of thunderstorms in the afternoon. Waves 3 to 5 feet. Waves occasionally around 7 feet.
Tuesday Night
Southwest winds 10 to 15 knots becoming north 15 to 20 knots in the late evening and early morning, then increasing to 30 knots with gusts to 35 knot gales after midnight. Showers and a chance of thunderstorms in the evening, then showers after midnight. Waves 1 to 3 feet building to 5 to 7 feet after midnight. Waves occasionally around 10 feet. A gale warning may be needed.
Wednesday
North winds to 30 knots with gusts to 35 knot gales diminishing to 20 to 25 knots with gusts to 30 knots in the late morning and afternoon. Rain showers. Waves 6 to 9 feet. Waves occasionally around 12 feet. see lake huron open lake forecast for days 3 through 5.
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Last Update: 951 PM EDT Mon Sep 20 2021
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