That shit is real anon. Came out of KPHX one day, late afternoon early evening. Last leg back to KATL. West departure on SID back around to the east for the climb and one of these dust storms was moving in from the south. It was unfuckingbelieable. Looked exactly like this. A huge rolling wave of dust moving over vacant terrain, neighborhoods, buildings, everything. Damnest thing I ever saw while in an airplane which includes watching a rollcloud make it's way downward turning into a tornado in Ohio one night.