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Cone of protection: The area below a lightning rod that is shielded from lightning. The radius of the protected horizontal distance is about two times the height of the object on which the rod is mounted.
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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.
