(Updated at 11:30 a.m.) Nearly 3,700 1,500 Dominion customers are without power in the northwest corner of Arlington.

The power outage is currently affecting the Yorktown, Williamsburg and East Falls Church neighborhoods. Homes, businesses, traffic lights and even Yorktown High School have lost power.

Dominion spokeswoman Le-Ha Anderson said a piece of equipment failed, causing about 1,500 customers to lose power. The company hopes to have power restored by 11:45 a.m.