PPL Electric Utilities of Allentown activated its Emergency Response Center at 8 a.m. to coordinate system-wide preparations and has alerted all storm-response personnel to prepare for extended shifts.

It also has called up 100 utility workers from sister utilities in Kentucky to assist in any power restoration efforts, if needed.

FirstEnergy said it has also called up around 100 utility workers for its Pennsylvania service territory.

"We have been monitoring this weather system since early this week and have been preparing to minimize the impact the severe weather could have on our customers," said Doug Elliott, president of FirstEnergy's Pennsylvania operations.

"Proactive mobilization of additional linemen, vehicles and supplies from other FirstEnergy utilities will help speed the restoration process if the snow and winds damage our equipment and cause service interruptions," Elliott said. "In addition, we continue to work to secure commitments from outside contractor crews and through mutual assistance groups for additional resources to deploy as needed."