PHOENIX -- The monsoon is beginning in Arizona and that means storm chances are on the rise.
Thursday afternoon, Doppler radar showed storms across the Mogollon Rim, White Mountains and into southeastern Arizona. There’s a potential for outflow boundaries from these storms to produce blowing dust in the Valley Thursday evening. Isolated thunderstorms for the Valley are also a possibility through the nighttime hours.
The National Weather Service in Tucson issued a Blowing Dust Advisory until 8 p.m. Thursday for portions of Pinal, Pima and Santa Cruz counties, including the notorious I-10 corridor between Picacho Peak and Tucson.
Storm chances in the Valley peak on the Fourth of July as moisture and instability increase. Those storms could produce gusty winds, lightning, rain and kick up dust.
Storm chances continue across most of Arizona, including the Valley, through the weekend.
As moisture in the atmosphere increases, overnight lows will rise and daytime highs will drop. Look for morning lows in the upper 80s across the Valley, with daytime highs around 105.