Dust devil

Type of whirlwind / From Wikipedia, the free encyclopedia

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A dust devil (also known regionally as a dirt devil) is a strong, well-formed, and relatively short-lived whirlwind. Its size ranges from small (18 in/half a metre wide and a few yards/metres tall) to large (more than 30 ft/10 m wide and more than half a mile/1 km tall). The primary vertical motion is upward. Dust devils are usually harmless, but can on rare occasions grow large enough to pose a threat to both people and property.[1][2]

Quick facts: Dust devil, Area of occurrence, Season, Effec...
Dust devil
Dust_devil.jpg
A dust devil in Arizona
Area of occurrencePrimarily temperate and tropical regions
SeasonMost common in summer
EffectDust and debris lofted into air, possibly wind damage
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They are comparable to tornadoes in that both are a weather phenomenon involving a vertically oriented rotating column of wind. Most tornadoes are associated with a larger parent circulation, the mesocyclone on the back of a supercell thunderstorm. Dust devils form as a swirling updraft under sunny conditions during fair weather, rarely coming close to the intensity of a tornado.

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