Treacherous weather left more than 50,000 York County residents without power Wednesday morning, and Met-Ed said it was unclear when service would be restored.
A half inch of ice weighed down tree limbs and power lines, knocking out electricity to thousands of Met-Ed and PPL customers across the county.
"We've got widespread damage. There's still precipitation coming down, so we could have more damage before we're done," said Chris Eck, Met-Ed spokesman, said at 8:30 a.m.
Customers in nearly every municipality in York County reported outages, which were largely caused by tree branches falling on wires, he said.
"With storms like this we often need forester crews and repair crews at the site, and that can take a while," Eck said.
Met-Ed has to assess all damage, and then repairs will start.
"It's difficult to put a restoration time on things. We have a great deal of work ahead of us," he said.
Met-Ed serves more than 172,000 customers in York County, and about 53,000 were without power as of 9:30 a.m. Wednesday.
PPL serves about 8,000 customers in the county, and more than 1,700 of its customers in northern York County were without power on Wednesday morning.
A company spokesman did not immediately return calls about restoration efforts.
Statewide, more than 500,000 were without power, including 442,000 in the Philadelphia area and 59,000 in Lancaster County, according to The Associated Press.
Closings: York County schools were closed, as were county courts and administrative offices.
County spokesman Carl Lindquist said dozens of trees and utility lines had closed roads all over the county.
Cleanup crews were working in sleet and freezing rain on Wednesday, which meant a rough morning commute in York County because of all the closed roads.
Remnants of the storm might be visible throughout the day.
"Temperatures will warm up and take care of some of the ice on the roads, but downed power lines and trees could continue to cause traffic problems," said Charles Ross, meteorologist with the National Weather Service.
Though the worst of the storm was expected to end by early morning, sleet and freezing rain could continue in the western part of the county, Ross said.
Cold coming: The evening commute will be far easier than the morning commute, he said, but motorists might want to bundle up.
The high 30s York County will see Wednesday afternoon will be replaced by a cold front that will send temperatures into the low teens overnight, according to the National Weather Service.
Temperatures won't get out of the 20s during the rest of the week, Ross said.
And it might not be what Yorkers want to hear, but there's a chance next week could begin with more snow.
"There's a system moving through that could bring a lot of snow or absolutely nothing. It's highly uncertain now," he said.
The National Weather Service will continue to watch the storm system and update its forecast, Ross said.
The region is about 12 inches above average snowfall for the year, he said.
"Keep in mind it's February, the time of our maximum snowfall. I won't be surprised to see another big snowstorm," Ross said.