Winter Storm Fern will potentially bring "historic" impacts across dozens of cities this weekend, with "catastrophic" amounts of ice posing the biggest threat, one meteorologist said.

More than 10,000 flights canceled as bitter cold blankets the U.S.

Alerts stretched 2,000 miles across the United States as more than 180 million people were under watches or warnings for ice and snow, and more than 210 million were under cold weather advisories or w...