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Confidence votes 95.7K. A sand tornado is not truly a tornado. It is a phenomenon called a dust devil. Dust devils are whirlwinds that form when a layer of hot air forms just above the ground and rises in a relatively small, rotating column, picking up up dust or sand as it does so. Dust devils are rarely strong enough to cause damage, and are much weaker than tornadoes.
Types of Tornadoes. There are a few different types of tornadoes that are classified by specific characteristics. These tornadoes include the landspout, the multiple vortex tornadoes, and the waterspout. Other less common tornado-like phenomena that exist are the gustnado, the dust devil, and the fire whirl.ultiple-vortex tornadoes are specific types of tornadoes that have two or more columns spinning in the air that rotate around the same center. This can occur in almost any circulation, but is usually seen in intense tornadoes. These separate vortices cause small areas of heavier damage along the central tornado path.