As millions of Americans hunker down for the winter storm, 19 states and Washington, D.C., have declared states of emergency.

Track everything from current conditions, forecast timing and potential impacts from the winter storm here.

Forecasters say over half the U.S. population could be affected by snow, ice or bitter cold as a winter storm sweeps across the county.

A messy spell of winter weather continued to dominate Thanksgiving forecasts, with a mix of rain and snow materializing in different areas across the United States. Storms could potentially impact ...