Tens of thousands still without power in Pa.

PHILADELPHIA (AP) -- More than 55,000 utility customers in Pennsylvania are still without power following a destructive nor'easter that has shuttered some schools and left some residents unsure about when they can return home.

Hundreds of crews continued to work Monday to clear trees and repair power lines damaged by the storm that swept in Friday. But officials said some customers may not have their service restored until at least Tuesday.

DETAILS: See here for a complete PECO outage map.

The storm coated the region with a wintry mix, knocking down numerous trees and causing flooding and dangerous travel conditions in many areas. The governor's office has said that roughly 587,000 customers lost power during the peak of the storm.

Dozens of school throughout the state were either closed or holding delayed openings Monday due to power issues.

CLOSINGS: Check school closings and early dismissals from FOX 29