SEATTLE – Tens of thousands of people remained without power after windstorms struck parts of Washington state and Oregon over the weekend.

About 49,000 Puget Sound Energy customers were still without power Monday morning. KOMO reports that crews had restored power to 255,000 customers since the height of the storm. Seattle City Light had approximately 500 customers without power as of Monday morning.

In Oregon the lights were back on for most people.

The storm caused Alaska Airlines to ground all its flights between 4:20 a.m. and 5:15 a.m. Sunday after a power outage in the Seattle area, where its operations are based. Twenty seven flights were delayed and five were canceled.

The National Weather Service reported winds included gusts of more than 60 mph at the storm’s peak Saturday night and early Sunday morning.