Red Dust Devil (video)
A man in Brazil captures a huge red dust devil, in an area that was calm around him. Watch the video…
See also Dust Devil on Mars.
A dust devil is a strong, well-formed, and relatively long-lived whirlwind, ranging from small (half a metre wide and a few metres tall) to large (more than 10 metres wide and more than 1000 metres 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.
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