Severe weather is expected to bring subzero temperatures the northern Plains as soon as Thursday, then reach the Mississippi Valley, the Northeast and the Ohio Valley by Sunday.

More than 200 million Americans are bracing for a potentially catastrophic winter storm, with heavy snow and freezing rain forecast

Thousands of power line workers were on standby, flights were canceled and bottled water flew off the shelves Thursday as a huge winter storm that could bring catastrophic damage, widespread power out...