SEATTLE (AP) — A strong Pacific storm system that triggered mud flows in wildfire-scarred areas of California also slammed the coasts of Washington state and Oregon Sunday, threatening coastal flooding and causing power outages affecting thousands of customers in the Pacific Northwest. Two people were killed when a tree fell on a vehicle in the Seattle area. Eastside Fire & Rescue responded to the scene of the fatalaties near Preston, Washington, which is about 20 miles east of Seattle. Wind gusts topping 60 mph also downed trees on Interstate 90 east of Seattle and cut power to more than 150,000 customers in the metro area and around Puget Sound. In Oregon, about 25,000 customers lost power in Portland and the northwest part of the state.