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Dancing devil: A small, vigorous, short-duration whirlwind, made visible by dust carried aloft, up to 100 feet in diameter, average height 600 feet. Other names: dust devil, dancing dervish, dust whirl.
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Tom Skilling is chief meteorologist at WGN-TV. His forecasts can be seen Monday through Friday on WGN-TV News at noon and 9 p.m.
WGN-TV meteorologists Dennis Haller, Steve Kahn and Richard Koeneman plus weather producer Bill Snyder contribute to this page.
