NWS Forecast Office Phoenix, AZ

A fairly typical monsoon setup, with abundant moisture in place over the region and easterly to southeasterly flow aloft, will persist through the end of this week. Day to day coverage of storms will fluctuate some, with subtle moisture fluxes and influences from prior day storms, but a familiar pattern should take shape each day with AZ high terrain storms in the early-mid afternoon, which will then send outflow boundaries outward into the lower elevations. These may then trigger additional storms over portions of the lower deserts. Late in the week, there are indications of a disturbance approaching from the east that would act to increase the coverage of thunderstorms across the lower deserts. As we enter this more active period, be sure to stay weather aware and have multiple ways to receive warnings!

High pressure over the region in combination with slight day to day variations in moisture/cloud cover will allow temperatures to fluctuate near to above normal through the middle of the upcoming week, leading to widespread Moderate HeatRisk. Practice smart heat safety by drinking plenty of water and electrolytes and reducing your time outside during the afternoons.