© AP Photo/The Arizona Republic, Nick OzaA dust storm rolls into the Phoenix area Monday evening, July 18, 2011. The dust wall was about 3,000 feet (900 meters) high and created winds of 25 to 30 mph (40 to 48 kph), with gusts of up to 40 mph (64 kph), said Austin Jamison, a meteorologist with the National Weather Service.
A giant wall of dust rolled through the Phoenix area on Monday, turning the sky brown, creating dangerous driving conditions and delaying some airline flights.
The dust, also known as a haboob in Arabic and around Arizona, formed in Pinal County and headed northeast, reaching Phoenix at about 5:30 p.m.
The dust wall was about 3,000 feet high and created winds of 25 to 30 mph, with gusts of up to 40 mph, said Austin Jamison, a meteorologist with the National Weather Service. Visibility was down to less than a quarter-mile in some areas, he said.
"You have suddenly very poor visibilities that come on with all the dense dust in the air," he said. "With poor visibilities, that makes for dangerous driving conditions and that's arguably the biggest impact."
There were no immediate reports of accidents on roadways because of the storm, which began to clear within an hour of moving in. The Arizona Department of Public Safety did not immediately return a request for information about road conditions.
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