.... It must have felt apocalyptic," said Chris Vagasky, a meteorologist at Vaisala. The Finland-based

A prolonged, thunderous boom sounded all over the Washington region around 10: 45 a.m. Tuesday, jarring residents unsure of its source.... But, in all likelihood, it was caused by a lightning strike in the vicinity of Reston and Dulles. Support our journalism.... “ This was estimated to be 442, 000 Amps, ” he wrote. Additionally, multiple eyewitnesses in the vicinity posted that they saw lightning strike before the resounding rumble. Advertisement “ I saw a bright flash before the loud thunder