Dust devil

Dust devil

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Credit: CLEM HAAGNER/SCIENCE PHOTO LIBRARY

Caption: Dust devil. This is a type of small, weak tornado that commonly occurs in hot, dry areas. It is usually formed when winds are deflected by terrain features into a rotating column. If updrafts caused by heating of the surface are also present, then a dust devil can form. The updraft and rotation pull dust from the surface, making the funnel visible. A dust devil is not as destructive or large as a tornado, and poses little threat.

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Keywords: african, arid, climate, convection, dry, dust devil, dusty, extreme, harmless, hot, kgalagadi transfrontier park, meteorology, plain, savannah, severe storm, small, south africa, storms, tornado, twister, vortex, weather, whirlwind

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