Then it goes back to being dry again.” To help you better understand the forecast and weather prediction models, here are some winter weather terms and what they mean, according to experts with the South Carolina Department of Natural Resources: Frank Strait,

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.

Freezing rain, sleet, snow and rain are expected Tuesday night into Wednesday to combine for a wintry mix that could disrupt daily life.