A powerful multi-day storm system that's lashing the U.S. South and Midwest has killed at ... Photo: Michael Swensen/Getty Images Downed trees and heavy structure damage are seen after tornadoes moved ...

On the evening of April 11, strong cold air and a low-level shear line brought short-term heavy rainfall and severe windstorms to Guiyang, Guizhou Province, with wind gusts reaching a maximum of level ...