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Day 244 -> Dust Devils

1/19/2014

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A non-horned dust devil (Image found on Google)
     A dust devil, apart from what I thought  - a devil made of dust (yeah, I read far too many mythology books) -  is a strong, well-formed, and relatively long-lived whirlwind, ranging from small (half a meter wide and a few meters tall) to large (more than 10 meters wide and more than 1000 meters 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.
      Also called "dancing devil", "chiindii" or "Saci", they are comparable to tornadoes in that both are a weather phenomenon of a vertically oriented rotating column of air. 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.
~Ally
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     Ally is a Biologist, Illustrator, Photographer and ex-procrastinator.

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