The slow-moving cloud — known as a haboob — hit parts of Phoenix and Arizona City, 60 miles to the southeast, late Monday afternoon, at one point leaving 15,000 energy customers in the dark. The number still without power Tuesday morning was more than 5,000, according to Poweroutage.us, mostly in Maricopa County.

Crews cleaned up downed trees and got power mostly restored for thousands of people Tuesday after a powerful dust storm roared through the Phoenix area. The wall of dust towering hundreds of feet high dwarfed the city’s neighborhoods.