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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.
Sandstorm by Maddie Strong winds blowing over loose soil or sand is what causes sandstorms. Sandstorms can also be called dust storms. They are caused by convection currents. Sandstorms are able to move entire sand dunes and sometimes able to move entire roads.There are also similar sandstorms in Mars. A lot of the particles in a dust storm or sandstorm are between 0.08mm and 1mm which also means 0.0032 and 0.04 inches in size.andstorms are able to move entire sand dunes and sometimes able to move entire roads. There are also similar sandstorms in Mars. A lot of the particles in a dust storm or sandstorm are between 0.08mm and 1mm which also means 0.0032 and 0.04 inches in size.