* WHAT. Flash flooding caused by excessive rainfall is possible. * WHERE. The District of Columbia, and portions of Maryland, including the following areas, 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, Virginia, including the following areas, Arlington/Falls Church/Alexandria, Central and Southeast Prince William/Manassas/Manassas Park, Clarke, Culpeper, Eastern Loudoun, Fairfax, Frederick VA, Greene, Madison, Northern Fauquier, Northern Virginia Blue Ridge, Northwest Prince William, Page, Rappahannock, Rockingham, Shenandoah, Southern Fauquier, Warren and Western Loudoun, and West Virginia, including the following areas, Berkeley, Hampshire, Hardy, Jefferson and Morgan. * WHEN. From 2 PM EDT this afternoon through this evening. * IMPACTS. Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS. - Numerous thunderstorms are expected to form and move across the Watch area this afternoon and evening. While thunderstorms will move along at a decent clip, they will be capable of producing very heavy instantaneous rainfall rates, and may exhibit some training motion at times. Multiple rounds of thunderstorms may be possible at any single location. In total, a widespread 1 to 2 inches of rain is expected, with embedded higher totals of 2 to 5 inches. Flash flooding may occur as a result. - Please visit www.weather.gov/safety/flood for flood safety and preparedness information

* WHAT. Flash flooding caused by excessive rainfall is possible. * WHERE. A portion of central Pennsylvania, including the following counties, Adams, Cumberland, Dauphin, Franklin, Lancaster, Lebanon and York. * WHEN. From 2 PM EDT this afternoon through this evening. * IMPACTS. Area creeks and streams are running high and could flood with more heavy rain. * ADDITIONAL DETAILS. - Heavy rain fell over most of the watch area on Monday and Monday night. More thunderstorms are expected later today and early tonight. The wet soils will cause the rain to run off into the already-high streams and creeks. Less than one inch of additional rainfall later today may be enough to cause flash flooding. The greatest risk for flooding is south of the Turnpike. - http://www.weather.gov/safety/flood