A Tornado Watch has been issued for Arlington and the D.C. region through 10:00 tonight.
Forecasters say severe storms are likely late this afternoon and this evening and that an isolated tornado is possible.
Showers and thunderstorms are expected to reach the around the evening rush hour.
From the National Weather Service:
THUNDERSTORMS ARE LIKELY LATE THIS AFTERNOON AND EVENING. A FEW OF THE THUNDERSTORMS MAY BECOME SEVERE WITH A THREAT OF DAMAGING WIND GUSTS…LARGE HAIL AND AN ISOLATED TORNADO.