Even rescue workers were having a difficult time. A fire engine was on its way to an accident on Interstate 66 when it lost control. Fairfax police say the engine sliped off of Route 50 but no one was injured.

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Reagan Airport has stayed open with delays and Dulles Airport has begun operating one runway after previously closing entirely.

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Motorists are encouraged to stay off the roads until at least this afternoon. The storm system is expected to drift north over the course of the day and temperatures in the mid-Atlantic will jump up to the 50s and 60s. Another round of cold weather will return on Monday.

[Baltimore Sun, Washington Post, USA Today]