As millions of Americans hunker down for a massive winter storm sweeping the country, new maps are offering updated forecasts of snow and ice accumulations.

Ohio is recovering from Winter Storm Fern, which caused significant snowfall, school closures, and water main breaks.

The National Weather Service is reporting increased confidence in "impactful heavy snow" across much of the Carolinas and parts of Virginia starting as early as Friday night, Jan. 30, bringing a stron...