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Snow and ice are to blame for power outages that impacted 13,500 residents, some for more than 24 hours, before being restored, according to Southern California Edison.

“We understand the disruption this storm event has caused, and we are working around the clock to get customers’ power back on as soon as possible. To expedite this work, we have brought in additional crews from other parts of our service territory,” the company said in a written statement.

At the height of the outage, about 12,000 people were without power in Arrowhead, and another 750 in the Antelope Valley.

All but about 300 customers had their power restored by Saturday evening, according to SCE. Those still in the dark were primarily in the Twin Peaks neighborhood.

Snow ice and strong winds have resulted in system damage and downed wires, according to SCE. Fallen branches damaged equipment in the impacted areas and have made it difficult for crews to access.

Crews are making steady progress and hope to get most customers’ power back up over the weekend, SCE spokeswoman Julia Roether said in an email.

“Customers who are served by equipment in areas that may be particularly challenging to access will be restored as soon as these issues are resolved,” Roether said.

A vehicle equipped with backup power has been deployed to the Lake Arrowhead Village from 11 a.m. to 5 p.m. Saturday for customers to charge their mobile devices.

“Water and snacks will also be provided to customers,” according to Roether.

Anyone experiencing a power outage related to the winter weather can contact 1-800-611-1911 or use the SCE outages app.

KTLA’s Brian Day contributed to this report.