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

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 increase its danger.

More than 160 million people are on alert for a brutal storm.

Be prepared for sharply colder weather today as arctic air settles into central Indiana. A cold front is moving over the state this morning and temperatures are going to tumble from here. A Cold

Winter storm watches have been issued for all of New Jersey starting Saturday night and continuing into Monday.

Check out the latest radar images as a winter storm moves across North Carolina, South Carolina and Virginia.

This index, from NOAA's National Weather Service, attempts to scale the impacts from winter weather, taking into account factors such as snowfall, accumulated snow on rooftops, ice accumulation, the potential for a flash freeze, and blowing snow. Not all factors are in play in a given winter storm.

Impacts from what could be the most significant storm of winter are expected to begin on Friday, spreading ice, snow and cold across much of the U.S.