Getting your Trinity Audio player ready...
Blue norther: A blast of bitterly cold arctic air that surges south across the southern Great Plains, especially Texas, during the winter, bringing strong north winds and a sharp temperature drop.
———-
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.
