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PHOTOS: Roll Clouds Move Through the Mid-Atlantic

By Samantha-Rae Tuthill, AccuWeather.com Staff Writer
September 17, 2013; 8:20 PM ET
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Showers in the mid-Atlantic states on Monday brought some roll clouds to parts of Virginia and Maryland.

According to AccuWeather.com Expert Senior Meteorologist Henry Margusity, roll clouds are the result of an outflow of cold air after a bout of rain.

"A shower or thunderstorm forms, and then cool air follows behind it," Margusity said. "As the cool air rushes out, warm air moves in on top of it."

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Condensation along the meeting point between the cool air and the warm air result in these roll clouds. Take a look at these roll clouds that were seen on Sept. 16.

A roll cloud spotted in Waldorf, Md., Sept. 16. Photo by AccuWeather Facebook fan Silvie Rivera.

A view of a roll cloud in Herndon, Va. Photo by Judi Ferrara.

A closer shot of the Herndon, Va., roll cloud. Photo by Judi Ferrara.

Panoramic shot of a roll cloud taken by NWS Sterling, Va.

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