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Willy-willy: In Australia, a strong tropical cyclone (low pressure system) producing winds of 38 m.p.h. or higher; it is comparable in strength to a tropical storm (39-73 m.p.h.) in the Atlantic basin.
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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.
TV meteorologists Steve Kahn, Richard Koeneman and Paul Dailey plus weather producer Bill Snyder contribute to this page.
