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Storm clouds fill the sky over the U.S. Capitol Building, June 13, 2013 in Washington, DC. Potentially damaging storms are forecasted to hit parts of the east coast with potential for causing power wide spread outages. (Photo by Mark Wilson/Getty Images) ( 170444629 )

People on Lexington Avenue cross East 88th Street in a downpour June 13, 2013 in New York as a severe storm affects the northeasten US. AFP PHOTO/Stan HONDA/AFP/Getty Images ( 520542664 )

Storm clouds fill the sky over the U.S. Capitol Building, June 13, 2013 in Washington, DC. (Photo by Mark Wilson/Getty Images) ( 170441490 )

People on East 86th Street cross Lexingon Avenue in a heavy rain on June 13, 2013 in New York as a severe storm affects the northeastern U.S. AFP PHOTO/Stan HONDA/AFP/Getty Images ( 520543019 )

A woman walks through Times Square during a rainstorm in New York June 13, 2013. A severe storm system sweeping the U.S. East Coast on Thursday delayed flights and threatened to snarl work commutes a day after causing several tornadoes, damaging hail and high winds across the upper Midwest. REUTERS/Shannon Stapleton ( USA-WEATHER/ )

A man looks out over the 18th hole after play was suspended during a storm at the first round the US Open at Merion Golf Club June 13, 2013 in Ardmore, Pennsylvania. AFP PHOTO/Brendan SMIALOWSKI/AFP/Getty Images ( 520541087 )

People on Lexington Avenue cross East 88th Street in a heavy rain June 13, 2013 in New York as a severe storm affects the northeastern US. AFP PHOTO/Stan HONDA/AFP/Getty Images ( 520542837 )

A man on Lexingon Avenue uses a piece of cardboard as he crosses East 86th Street in a heavy rain June 13, 2013 in New York as a severe storm affects the northeastern U.S. AFP PHOTO/Stan HONDA/AFP/Getty Images ( 520543166 )