Three Killed in PA Flood

Don Wright / AP Photo

Tara Howes, of Gibsonia waits for her purse to be retrieved from her car as workers clear vehicles that were stranded along Washington Blvd. from a flash flood that was caused by afternoon rain storms Friday, Aug. 19, 2011 in Pittsburgh. Three people died while stranded in their vehicle.

A flash flood swept through Pittsburgh Friday afternoon, washing a family's car down the road and into a tree. The mother and two children inside drowned. "The three could not get out of the car before it was submerged," said a city official. "The water had a lot of force behind (it), and all three inside drowned." A fourth person remains unaccounted for after the flood.