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dust devil

   Also found in: Dictionary/thesaurus, Wikipedia, Hutchinson 0.01 sec.
dust devil: see whirlwind whirlwind, revolving mass of air resulting from local atmospheric instability, such as that caused by intense heating of the ground by the sun on a hot summer day.
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dust devil [′dəst ‚dev·əl]
(meteorology)
A small but vigorous whirlwind, usually of short duration, rendered visible by dust, sand, and debris picked up from the ground; diameters range from about 10 to 100 feet (3 to 30 meters), and average height is about 600 feet (180 meters).
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While these winds appeared to be dominated by turbulence, the highest wind speeds recorded of up to nearly 60 kilometers per hour coincided with the passing of weather systems, when also the number of dust devils increased by an order of magnitude.
Wind speeds and directions in Martian polar region measured for first ... by Asian News International
Tri-City roughed up the Eugene bullpen for five late runs to break open a close game as the East Division-leading Dust Devils defeated the Ems 6-2 in a Northwest League baseball game Tuesday night.
Dust Devils pull away for victory by The Register-Guard (Eugene, OR)
Factors contributing to dust devil formation are flat terrain, such as desert, clear skies and a light wind or lack of wind, as well as extremes in temperature between air and land.
'Dust devil' takes Dubai motorists by surprise by Gulf News (United Arab Emirates)
 
 
 
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