Cities that rarely get snow are getting more than a foot in frigid 'Arctic outbreak' that's killed 4 people
Storm Blair is bringing heavy snow to areas in the mid-Atlantic region that haven't seen such weather in a decade.
Winter storm live updates: Multiple deaths reported as snow slams mid-Atlantic region; over 1,900 flight cancellations
The storm has caused severe air travel disruptions. According to FlightAware, more than 1,800 flights in and out of the U.S.