A massive winter storm system is dumping snow across a large swath of the United States, causing major travel disruptions. Roads are treacherous in many areas and thousands of flights have been canceled or delayed.

While the snowstorm caused headaches for some from the Midwest to the Mid-Atlantic, it was pure joy for the new pandas at the National Zoo in Washington, D.C.

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