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

Track the winter storm as it's forecasted to bring heavy snow and extremely cold weather to the U.S., reaching millions from ...

Heavy snow, ice and brutal cold are expected to make this winter storm a potentially life-threatening weather event, ...

This index, from NOAA's National Weather Service, attempts to scale the impacts from winter weather, taking into account ...

A major winter storm is set to spread heavy snow and damaging ice across a large portion of the United States over the coming days. Dangerously cold temperatures will only worsen the storm and ...

Winter storms and extreme cold are forecast to wallop the U.S. with snow and ice through the weekend. Prepare for power outages and transportation issues.

Temperatures are set to plummet at the end of the month ...

The whole country could be plunged into subzero temperatures as a late-January snowstorm takes hold, according to the latest ...

Weather maps from WXCharts show widespread snowfall but the Met Office isn't quite as certain ...