With snow already piling up, York County can expect to see total accumulation of between 4 to 8 inches once the storm ends, according to the National Service.
A winter storm warning is in effect for York and surrounding counties until 1 a.m. Friday, the weather service said Thursday night.
Heavy snow is expected throughout the warning, the weather service said.
A number of roads in York County are snow-covered, making it difficult for motorists to travel.
Some roads are closed and a number of crashes have been reported, according to York County 911.
There is a speed restriction on the Pennsylvania Turnpike from Blue Mountain to Morgantown and also on the Northeastern Extension in the eastern portion of the state. Motorists in those areas are now restricted to traveling at 45 mph. All abandoned vehicles will also be removed from the roadway. Heavy wreckers are staged at several areas of the turnpike to be used if needed. Other areas of the turnpike are operating under a weather advisory and motorists should travel with caution.
Reported at 4:48 p.m. The speed limit on Interstate 83 has been reduced as a winter storm begins to hit York County.
The state Department of Transportation reduced the speed limit to 45 mph on the entire length of I-83, which runs from the Maryland line to its end in Lower Paxton Township, Dauphin County, in Pennsylvania, according to a news release from the department.
The speed limit on Route 30 in York County has also been reduced to 45 mph. The reduction is in affect from East Lampeter Township, Lancaster County, to Straban Township, Adams County, according to PennDOT.
As of Thursday afternoon, nearly 15 crashes have been reported in parts of York County, including a fatal crash in Heidelberg Township, according to York County 911.
Road conditions have also deteriorated, according to radio transmissions.
York County is under a winter weather advisory until 7 a.m. tomorrow, with several inches of snow in the forecast.
York is slated to get 2 to 5 inches, according to the National Weather Service.
Click here to view a list of crashes.