Dust storm covered the city of the U.S. state of Arizona, according to RIA Novosti.
According to the channel KSAZ-TV, in some parts of the dust cloud extends for 80 kilometers.
Storm came out of the desert to the south of the city of Phoenix and a few hours hanging over skyscrapers.
The Federal Aviation Administration has banned due to poor visibility departure.
According to the National Weather Service, hurricane-force winds with gusts up to 96 miles per hour drove a cloud of dust on Avondale, Tempe and Scottsdale. Wind tore places trees and left without electricity for nearly eight thousand people.
Dust storm — atmospheric phenomenon in which soil particles carried by the wind and sand. It usually occurs during the warm season in the desert and semi-desert regions with dry soil and wind speed of 10 m / s or more. Monsoon season in Arizona begins in mid-June and continues until the end of September.