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Mud rain: Rain containing a noticeable concentration of particles of sand or dust, sometimes originating from very distant regions. In the U.S., it occurs most frequently in the winter and early spring when plowed farm fields are most susceptible to wind erosion.
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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.
