Photo gallery: July 5 Phoenix dust storm
A giant dust storm covered Phoenix on July 5, 2011.
Dust Storm
A giant dust storm covers Phoenix, Ariz., Tuesday, July 5, 2011. (AP Photo/The Arizona Republic, Rob Schumacher)
Dust Storm
A giant dust storm covers Phoenix, Ariz., Tuesday, July 5, 2011. (AP Photo/The Arizona Republic, Rob Schumacher)
Arizona Dust Storm
People walk in downtown Phoenix during a dust storm Tuesday, July 5, 2011. A massive dust storm has swept into the Phoenix area and drastically reduced visibility across much of the valley. (AP Photo/Ross D. Franklin)
Dust Storm Arizona
Pedestrians cross a street as they try to get out of a dust storm as it moves though downtown Phoenix, Tuesday, July 5, 2011. (AP Photo/Ross D. Franklin)
Phoenix Dust Storm
A dust storm known as a "habub" rolls into downtown Phoenix on Tuesday night, July 5, 2011, bringing strong winds and low visibility. Habubs are part of Arizona's annual monsoon season, which is now in full swing. (AP Photo/Amanda Lee Myers)
Dust
Mary Nichols and JoAnn Buckson, right, run for cover in Phoenix Tuesday July 5, 2011 as a dust storm blows through. A massive dust storm has swept into the Phoenix area and drastically reduced visibility across much of the valley. (AP Photo/DAVID KADLUBOWSKI / Arizona Republic) NO SALES
Arizona Dust Storm
A truck tries to drive through a dust storm in downtown Phoenix, Tuesday, July 5, 2011. (AP Photo/Ross D. Franklin)
PhoenixDust Storm
Pedestrians run to cross the street as they try to get away from a dust storm in downtown Phoenix, Tuesday, July 5, 2011. A massive dust storm has swept into the Phoenix area and drastically reduced visibility across much of the valley. (AP Photo/Ross D. Franklin)
Jonathan Murguia
Jonathan Murguia, a recon manager for a local car dealership, cleans a washed car as a dirty car sits next to him, a locals scramble to clean up in the aftermath of a massive dust storm Wednesday, July 6, 2011, in Scottsdale, Ariz. The huge dust wall that crossed the metro Phoenix area Tuesday night drastically reduced visibility, halting all flights coming in and out of Phoenix Sky Harbor Airport until conditions improved. (AP Photo/Ross D. Franklin)

