York County under tornado warning until 7:30 p.m.
Update at 6:56 p.m.: The tornado warning is now extended until 7:30 p.m.
The storm is now tracking to be near Wrightsville borough around 7:20 p.m. and will continue moving east into Lancaster County.
Interstate 83 will be impacted between mile markers 18 and 28.
Update at 6:36 p.m.: The National Weather Service has issued a tornado warning for York County until 7 p.m.
The alert indicated the storm will be near York City and surrounding areas around 6:40 p.m. and will move eastward toward Hallam and Wrightsville boroughs around 7 p.m.
Flying debris could cause damage to roofs, trees and vehicles.
Residents should take shelter.
Previous: The National Weather Service issued a severe thunderstorm watch for York County and much of central Pennsylvania until 9 p.m. Sunday.
As of 3 p.m., the storms are widely scattered over the mountains, said David Martin, meteorologist with NWS at State College, but there's a bigger storm just southwest of Chambersburg in Franklin County that will probably move into York County by late afternoon.
There could be heavy downpours, with some areas getting about an inch of rain, as well as lightning, gusty winds and possibly hail.
People should seek shelter inside and away from lightning, preferably in an interior room of the house such as a basement or bathroom, Martin said.