Overview

• A thunderstorm outflow near Eloy and Arizona City Monday afternoon built a fast-moving wall of dust that pushed into the Phoenix Valley, with visibility reported as low as 50 feet in places.
• The National Weather Service issued dust storm and severe thunderstorm warnings and urged drivers to follow the “Pull Aside, Stay Alive” safety guidance during near-zero visibility.
• Tens of thousands lost power across Arizona, including about 39,000 customers statewide late Monday with most outages in Maricopa County, according to PowerOutage.us.
• Phoenix Sky Harbor briefly halted flights as the dust and storms moved in, then lifted the ground stop with delays of roughly 15 to 30 minutes while crews assessed damage.
• Winds topping 35 to 40 mph and blowing dust downed trees and knocked out traffic signals in parts of the metro, and the active monsoon pattern keeps storm chances elevated into Tuesday and Wednesday.