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Ice: Water substance in the solid phase. Its density is 0.917 that of liquid water, and so ice floats in water with 8.3 percent of its volume above the water surface and 91.7 percent below it.
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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.
