A Milwaukee County Sheriff's deputy helps motorists slow down for a vehicle that was spun around, resting against the wall on a slick southbound I-43 near Concordia St., Wednesday, June 12, 2013 in Milwaukee. A line of thunderstorms packing heavy rain and high winds is spreading across southern Wisconsin, downing trees, knocking out power and causing part of a Walmart roof to collapse. (AP Photo/Milwaukee Journal-Sentinel, Rick Wood)
Gallery: Storm damage across U.S.
Jun. 13, 2013 @ 06:06 PM
A massive storm system that started in the Upper Midwest and plowed across the country was hitting the Mid-Atlantic Thursday, causing widespread power outages and flash flooding, but still largely failing to live up to its fierce billing.