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Orphan Anvil: An anvil cloud from a dissipated thunderstorm, below which no other clouds remain. (An anvil is the upper, flattened ice-crystal portion of a cumulonimbus cloud).
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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.
