PHILADELPHIA (AP) — The snow storm has moved on, but there's a lot of work left to do across the Mid-Atlantic states today.

Road crews are working to clear icy highways, while utility crews are braving the roads in an effort to restore electricity. More than 100,000 customers from Virginia to New Jersey have lost power as a result of the storm.

The National Weather Service says the blizzard that pounded its way from the southern Plains up through the East Coast affected an estimated 50 million people.

Snowbound airports in Washington, Baltimore and Philadelphia are slowly resuming operations, but on limited schedules. Officials are warning that the flights are still being canceled.

Around Philadelphia, road crews have cleared Interstate 76 and I-676. The two highways were closed yesterday, leaving the city with only one major artery.

Meanwhile, in Washington, D.C., authorities are urging motorists to stay off city streets to keep them clear for emergency response, tree and road crews. The federal government remains closed for a fourth straight day.