Posted by John in “Dust Devil” is the common name for the tornado like plumes of dust you often see spinning in the Arizona deserts on hot days. Typically the wind speed in these little twisters is only about 25 mph. The worst damage they do is to spread dust and trash along their path. Occasionally they can pack quite a wallop. The wind speed in some dust devils has been measure at 100mph and they have been reported to have torn the roofs off of buildings.
