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Dry thunderstorm: A thunderstorm that produces little or no rain, and mainly a phenomenon of the western United States. Rain falling from the base of such a thunderstorm evaporates before it reaches the ground.
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For up-to-the-minute forecasts by Tom Skilling and additional weather data online, visit chicagotribune.com/weather
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.
