...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH TUESDAY EVENING... The Flash Flood Watch continues for * Portions of Maryland, The District of Columbia, Virginia, and West Virginia, including the following areas, in Maryland, Anne Arundel, Calvert, Carroll, Central and Southeast Howard, Central and Southeast Montgomery, Charles, Frederick, Northern Baltimore, Northwest Harford, Northwest Howard, Northwest Montgomery, Prince Georges, Southeast Harford, Southern Baltimore, St. Marys, and Washington. The District of Columbia. In Virginia, Arlington/Falls Church/Alexandria, Clarke, Eastern Loudoun, Fairfax, Frederick, King George, Northern Fauquier, Prince William, Southern Fauquier, Stafford, Warren, and Western Loudoun. In West Virginia, Berkeley, Hampshire, Jefferson, and Morgan. * Through Tuesday evening * Rainfall associated with Tropical Storm Isaias is expected to start spreading northward late tonight and continue into Tuesday evening. Widespread rainfall totals of 3 to 6 inches are expected with localized higher amounts possible. Rain amounts will be highest near and east of the Interstate 95 corridor. * This amount of rain is likely to result in significant flash flooding of small streams and creeks Monday night into Tuesday evening. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flash Flood Watch means that conditions may develop that lead to flash flooding. Flash flooding is a very dangerous situation. You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. By The National Weather Service, Sterling, Va.