Another powerful winter storm system is disrupting holiday travel. Nearly 40-million people are under winter weather alerts from the Northern Plains to New England.
Over 77-hundred flights have been delayed with almost another 700 canceled across the U.S. Heavy snow began falling in parts of Colorado, Wisconsin and Minnesota.
Forecasters say a strong line of storms will developed from the Great lakes into the mid-south potentially causing travel delays in Chicago, Indianapolis, Detroit and Memphis.