Getting your Trinity Audio player ready...
Easterly wave: An area of weak low pressure that drifts to the west in prevailing easterly winds just north of the Equator. Easterly waves produce showery weather; they sometimes grow into hurricanes.
———-
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.
