Preparations are underway from Houston to Atlanta as a rare winter storm sets its sights on the southern U.S., where it's expected to bring a messy mix of heavy snow, sleet and freezing rain that could have a major impact on travel and daily life.

Houston is bracing for an arctic blast of snow and bitterly-cold temperatures from Winter Storm Enzo. The Weather Channel’s Jim Cantore is in the city and he spoke with the director of Houston’s airports about the decision to shut down George Bush Intercontinental and Hobby airports and how long that shutdown could last.