Overview

• A fast-moving dust wall from monsoon thunderstorms reduced visibility to about a quarter-mile across the metro area before clearing after dark.
• PowerOutage.us reported roughly 39,000 customers without electricity at the peak, with most outages in Maricopa County and varying figures across outlets.
• Phoenix Sky Harbor temporarily halted departures for extreme weather, then restarted operations with delays of about 15 to 30 minutes.
• The Arizona Department of Transportation urged drivers to avoid entering dust storms and to pull off the roadway if caught, as Gilbert police reported dark signals and downed trees.
• Forecasters put the chance of rain at 40% on Tuesday before a return to drier conditions, noting an uneven monsoon pattern across the region.