Millions were under weather advisories as the storm stretched from southern Illinois to Washington, D.C. Snow could fall at 1-2 inches per hour.

A major winter storm that broke snowfall records in the Midwest is now slamming the mid-Atlantic and causing the cancellation of more than 1,900 flights across the U.S. More than 50 million Americans from Kentucky to Washington, D.C., remain under winter alerts as the last of the storm pushes through Monday afternoon.

Storm Blair is bringing heavy snow to areas in the mid-Atlantic region that haven't seen such weather in a decade.

School closures are widespread and multiple cities and states declared emergencies. The system, named Winter Storm Blair by The Weather Channel, put millions under winter storm warnings. Here's what's happening now: Appalachian Power says some of its customers in Virginia may not have power restored until Thursday.