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Spiral bands: The characteristic arrangement of rain bands associated with hurricanes; they curve cyclonically (counterclockwise) inward toward the center of the storm.
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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 Steve Kahn, Richard Koeneman and Paul Dailey plus weather producer Bill Snyder contribute to this page
