Arlington County and the D.C. area is under a Severe Thunderstorm Watch tonight. The watch is in effect until 9 p.m. Forecasters say strong storms packing quarter-sized hail and strong winds are possible. “The main threat is damaging wind gusts, though a tornado cannot be ruled out,” the National Weather Service says. More from NWS: A severe thunderstorm watch has been issued for parts of DE, DC, MD, NJ, PA, VA, WV until 9 PM EDT pic.twitter.com/Z1DHeehXoN