A storm that set snowfall records in Chicago arrived in Washington, D.C. early Wednesday. It has triggered over 1,000 flight cancellations to and from airports in its path.
Just west of the nation's capital, it could dump up to 20 inches of snow but may turn into a mix of rain and snow as it nears the Atlantic Ocean, the National Weather Service said.
The federal government has closed offices for Wednesday. Emergency personnel will be expected to work as well as those equipped to work from home. D.C. schools will also be closed.
Washington suburb Arlington, Virginia, has readied snow plows and trucks in case of major snowfall.
Airlines have canceled flights to and from Washington's Dulles airport ahead of the storm's arrival. United has canceled 650 flights nationwide, most of them involving Dulles, U.S. Airways 350 and American 20.
This morning on "Early Start," CNN's Shannon Travis reports on the latest in how the winter storm is wreaking havoc on travel.
READ MORE:Â Snow storm that plastered Chicago reaches DC