ravine and only 4x4s and tires with chains were allowed on these roads. 50 million people from california to michigan are under winter weather alerts. a.a.a. expects record-breaking driving delays on wednesday. the congestion is due in part to 1.6 million more thanksgiving travelers this year than last year, says molly hart with a.a.a. auto club group. >> we are anticipating that there will be record-high travel delays, up to four times higher than normal throughout the country and in major metropolitan areas. >> reporter: the view from above may not be better. t.s.a. lines like these today at newark are already clogged, and today's the best day for air travel, making for a thankless trek to thanksgiving. adriana diaz, cbs news, chicago. >> o'donnell: wcbs' lonnie quinn is here with the latest on the storm. lonnie, this is going to get worse, right? >> reporter: without a doubt. there will be big problems on