Mother and her two daughters killed as flash flood swamps their car with 9ft wall of water after huge storms hit U.S.

·  Two to three inches of rain fell in just one hour

·  Electricity to hospitals and universities cut off in ·  More than a dozen cars submerged in flood water

·  Two to three inches of rain fell in just one hour

·  Electricity to hospitals and universities cut off in Pittsburgh, Pennsylvania

·  More than a dozen cars submerged in flood water

·  Man dies in Milwaukee as supsected tornado roared across Wisconsin

·  Hundreds of passengers stranded for hours on planes at JFK airport

·  New York Subway part suspended as heavy rain pummeled the Northeast

·  Man dies in Milwaukee as supsected tornado roared across Wisconsin

·  Hundreds of passengers stranded for hours on planes at JFK airport

·  New York Subway part suspended as heavy rain pummeled the Northeast