My son drove through one of these storms last night down in the area of I-10 from Pinal Air Park to south of Marana. It got to the point where visibility was less than 10 feet in any direction; he couldn’t see to pull off the highway safely.
He said that he saw tumbleweeds and small Palo Verde trees blowing through the air. That area is mostly farmland or desert. so there’s lots of debris and dirt to blow around.
Couldn’t see 10 feet across my backyard in Tempe. Everything including the pool is now covered in dust. Newsman on local TV says he’s lived here 29 years and never saw it so bad. What a mess