See Video of Arizona Dust Storm AP News in Brief at 5:58 a.m. EDT July 6, 2011 6:01 AM ET Strong winds push massive dust cloud into Phoenix, reducing visibility and delaying flights PHOENIX (AP) — A massive dust storm descended on the Phoenix area on Tuesday night, drastically reducing visibility and delaying flights as strong winds downed trees and caused power outages for thousands of residents. The dust cloud that hit the valley had originated in an afternoon storm in the Tucson area before moving north across the desert, said National Weather Service meteorologist Paul Iniguez. Before bearing down on the Phoenix valley, radar data showed the storm’s towering…