The National Weather Service (NWS) is warning Americans about travel over the next week, including simply driving locally, as a swath of historic cold temperatures and heavy snowfall make its way across the U.

CBS News meteorologist Troy Bridges has the latest forecast ahead of the ice storm. Forecasters say significant icing is expected this weekend, with total ice accumulations ranging from a quarter of an inch to as much as one inch.

As the winter storm heads toward South Carolina, we want to make sure you know what the terms are that the National Weather Services issues.

Winter Storm Map Temperature New Snow Snow Depth Icing Severity Full Winter Storm Forecast. In an update on Thursday morning, the Weather Prediction Center said the “long-durati