Severe thunderstorms have left thousands of people throughout North Jersey without power Friday evening.In Bergen County, Orange & Rockland reports 2,549 customers without power as of 7 p.m. with Mahwah being the most impactedIn Passaic County, JCP&L had 2,602 customers without power as of 7 p.m. with Wanaque being the hardest hit.In Essex County, PSE&G…