Dime size hail at the NWS Office in Sterling. Dangerous storm continues to head east to the Beltway/I-95. Expect damaging winds, large hail, blinding rains. Commuters should seek shelter until the storm passes.
— NWS DC/Baltimore (@NWS_BaltWash) May 14, 2018
Around 6:15 p.m. weather service radar showed a possible tornado rotation and forecasters issued a Tornado Warning.
Some roads were blocked by downed trees or high water.
Power was knocked out in several parts of Fairfax County. As of 8:00 p.m. county officials reported that about 9,000 people were in the dark. Dominion Power put the number in the county at around 15,000, with twice that number throughout Northern Virginia.