NWS Forecast Office Phoenix, AZ

Scattered to numerous thunderstorms will form over southern and eastern Arizona Sunday afternoon sending multiple outflow boundaries into south-central Arizona. The atmosphere will be favorable for additional development of storms along and behind these boundaries impacting lower elevation communities during the late afternoon and evening. There is a slight risk of severe weather with strong winds in excess of 60 mph, dense blowing dust, and locally heavy rainfall all possible. While storms will begin weakening Sunday evening, some impacts may continue well into western Arizona and southeast California into the overnight.