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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.
Waterspouts are similar to landspouts, except they occur over water. Damage from these types of tornadoes tends to be EF2 or less. Non-supercell tornadoes include (L-R): Gustnadoes, whirls of dust or debris at or near the ground with no condensation funnel, which form along the gust front of a storm.amage from these types of tornadoes tends to be EF2 or less. Non-supercell tornadoes include (L-R): Gustnadoes, whirls of dust or debris at or near the ground with no condensation funnel, which form along the gust front of a storm.