Officials urge Americans to stay indoors as historic winter storm creates "catastrophic" ice conditions and triggers the largest weather alert ever.

The winter storm is moving offshore but much of the eastern part of the country faces ice, bitterly cold temperatures and wind chill.

Deep snow extending from Arkansas to New England halted traffic, canceled flights and triggered wide school cancellations Monday.

By Phil Stewart and Lewis Krauskopf WASHINGTON, Jan 24 (Reuters) - More than 4,000 flights were canceled in the U.S. on Saturday ahead of a monster winter storm that has already cut power to more than 100,

Winter storm: Death toll rises as winter storm continues dumping snow across the U.S Heavy snow, sleet and freezing rain are slamming large parts of the U.S. as the dangerously cold weather causes major power outages and travel disruptions.

Reporters from across the NPR Network are covering the storm in each state — the impact and how officials are responding.

Hundreds of thousands of people are without power as heavy snow and ice has downed power lines across the country.

There have been flight cancellations and delays since Friday at Fresno Yosemite International, according to the airport spokesperson.