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Blizzard: An intense winter storm with sustained winds 35 m.p.h. or higher and sufficient falling and/or blowing snow to reduce visibility below 1/4 mile for at least three hours. Severe blizzard: Temperatures at or below 10(degrees), winds exceeding 45 m.p.h. and zero visibility.
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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 Dailey plus weather producer Bill Snyder contribute to this page.
