Dry, hot, clear days on the desert can bring about dust devils. Generally forming in the hot sun during the late morning or early afternoon hours, these harmless eddies are triggered by light desert breezes that create a swirling plume of dust with speeds rarely over 25 mph. They may be known as a dancing dervish, desert devil, or sand devil. Typically, the life cycle of a dust devil is short-lived. However, they occasionally can continue rotating for several hours at a time. Although usually harmless, they have been known to cause minor damage in the southwestern United States.

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Lets look at some facts on tornado formation.