Severe winter weather threatens millions

Tonight, a series of winter storms slamming western states with drenching rains, heavy snow, and high winds. >> Look at that. >> In Colorado, dozens of cars and semis piling up in a crash, leaving four people dead and 29 hospitalized.Authorities saying visibility plunged amid windblown dust. >> Mangled mess, shutting down I25 in both directions. >> We're going to make sure we have everyone accounted for.While in California, a near white out in the Sierra where a group of 16 skiers went missing after an aval ...