Usa: A massive sandstorm strikes Phoenix

July 6, 2011 - PHOENIX (AP) - A massive dust storm, and it 'struck the Phoenix area on the night of Tuesday, drastically reducing visibility and delaying flights, strong winds toppled trees and causedpower outages for thousands of residents in the valley. A wall of dustthat dominated the skyline from the desert, the KSAZ-TV reportedwhat appeared to be about 50 miles wide at some points. The cloudof dust covered the center of Phoenix to nightfall. - Yahoo News