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Storm clouds fill the sky over the U.S. Capitol Building in Washington D.C., June 13, 2013.
A massive storm system surged toward the Mid-Atlantic Thursday after causing widespread power outages but largely failing to live up to its billing in ferocity through the Upper Midwest.
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Lightning strikes the Willis Tower in downtown Chicago, June 12, 2013.
A massive storm system with heavy rain, high winds, hail and possible tornadoes was expected to move into Illinois and much of the central part of the Midwest.
Bryon Houlgrave/The Des Moines Register/AP
Part of a door was transplanted to its new location in a grassy field in Alexander, Iowa, after a tornado struck the area on Wednesday, June 12, 2013.
CBS/Robert Halliday
Twin tornados touched down northeast of Hampton, Iowa.
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Pedestrians take cover under umbrellas to avoid an unusually massive line of storms packing hail, lightning and tree-toppling winds that have been forecast for evening rush hour in Chicago, June 12, 2013.
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Storm clouds push toward downtown Chicago, June 12, 2013 in Chicago.
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Lightning strikes above downtown Chicago, June 12, 2013.
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A man rides a bicycle on the plaza of the U.S. Capitol Building as storm clouds fill the sky in Washington D.C., June 13, 2013.
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Lightning strikes the Willis Tower in downtown Chicago, June 12, 2013.
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Storm clouds push into the Chicago's lakefront, June 12, 2013.
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Two men stand on the plaza of the U.S. Capitol Building as storm clouds fill the sky in Washington D.C., June 13, 2013.
Charles Dharapak/AP
Students from Oholei Torah school in Crown Heights, Brooklyn arrive in a drizzle to visit the U.S. Capitol in Washington, June 13, 2013.
Massive thunderstorms that swept through the Midwest are pushing toward the Mid-Atlantic states.
Bryon Houlgrave/The Des Moines Register/AP
Duane Barkema's truck sits on its side in Alexander, Iowa, after a tornado was reported in the area, June 12, 2013.
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Lighting flashes over the Chicago skyline, June 12, 2013.
Chad Ryan/The Journal Gazette/AP
A wall cloud in northern Allen County drops what appears to be a funnel cloud, June 12, 2013 just north of Fort Wayne, Ind.
Dr. Scott M. Lieberman/AP
Lightning erupts over downtown Chicago as a line of powerful storms cross over the midwest, June 12, 2013.
M. Spencer Green/AP
A pedestrian races to avoid an unusually massive line of storms in Chicago, June 12, 2013.