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Stationary front: The relatively motionless transition zone between two air masses; winds blow approximately parallel to a stationary front, but in opposite directions on either side of the frontal boundary. At Chicago, most stationary fronts are oriented approximately east-west.
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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.
