A power outage hit Warrenton, Seaside and Cannon Beach Tuesday night as a result of a pole fire near a substation in Seaside on Roosevelt Drive near the outlet mall.

Pacific Power received reports of the outage around 10 p.m. Warrenton returned to power shortly before 11:30 p.m. Cannon Beach returned to power at 11:37 p.m.

Seaside was the last to return to power at about 12:40 a.m..

“There’s no obvious cause,” Tom Gauntt, a Pacific Power spokesman, said. “It doesn’t look like anyone had a bonfire down there.”

He said birds or a chemical reaction after rain may have caused the substation breaker to fail. “It’s the same idea as the breaker box in your garage.”

The pole was badly damaged. Crews were “able to work around it and isolated it using different circuits,” Gauntt said.

Gauntt said 15,324 customers were without power after the outage.