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Turbulence: The irregular motion that appears in liquid or gaseous fluids when they flow past solid surfaces or when neighboring streams flow past or over each other. Near the surface, the Earth’s atmosphere exhibits turbulent motion.
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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.
