FLOOD WATCH REMAINS IN EFFECT UNTIL 11 PM EDT THIS EVENING. * WHAT. Flash flooding caused by excessive rainfall continues to be possible. * WHERE. Portions of DC, Maryland, Virginia and panhandle West Virginia, including the following areas: District of Columbia. In Maryland, Anne Arundel, Carroll, Cecil, Central and Southeast Howard, Central and Southeast Montgomery, Frederick MD, Northern Baltimore, Northwest Harford, Northwest Howard, Northwest Montgomery, Prince Georges, Southeast Harford, Southern Baltimore and Washington. In Virginia, Arlington/Falls Church/Alexandria, Clarke, Eastern Loudoun, Fairfax, Northern Fauquier, Prince William/Manassas/Manassas Park, Southern Fauquier and Western Loudoun. In panhandle West Virginia, Berkeley, Jefferson and Morgan. * WHEN. Until 11 PM EDT this evening. * IMPACTS. Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS. - Multiple rounds of showers and thunderstorms are likely through this evening. Locations could receive 1 to 2 inches of rain in a short period of time. Localized rainfall totals of 1 to 3 inches are expected, though locations that experience multiple rounds of thunderstorms could exceed 3 inches. - For safety information, visit http://www.weather.gov/safety/flood.