Pics: 50-mile wide, mile high dust storm
July 06, 2011 17:58
A massive dust storm has descended on the Phoenix area, drastically reducing visibility and delaying flights as strong winds toppled trees and caused power outages for thousands of residents in the valley.
The wall of dust towered over city centre skyscrapers after it swept across the desert from the south; it appeared to be roughly 50 miles wide in some spots.