Full Notification

* WHAT...Flash flooding caused by excessive rainfall is possible.

* WHERE...Portions of DC, Maryland, northern Virginia and panhandle West Virginia, including the following areas: in DC, 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 northern Virginia, Arlington/Falls Church/Alexandria, Eastern Loudoun, Fairfax, Northern Fauquier, Prince William/Manassas/Manassas Park, Southern Fauquier and Western Loudoun. In panhandle West Virginia, Berkeley, Jefferson and Morgan.

* WHEN...From 11 AM EDT this morning through 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 starting this morning and continuing 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. - Please visit http://www.weather.gov/safety/flood for safety information.

* AFFECTED AREAS: DISTRICT OF COLUMBIA ... WASHINGTON ... FREDERICK ... CARROLL ... NORTHERN BALTIMORE ... CECIL ... SOUTHERN BALTIMORE ... PRINCE GEORGES ... ANNE ARUNDEL ... NORTHWEST MONTGOMERY ... CENTRAL AND SOUTHEAST MONTGOMERY ... NORTHWEST HOWARD ... CENTRAL AND SOUTHEAST HOWARD ... NORTHWEST HARFORD ... SOUTHEAST HARFORD ... PRINCE WILLIAM/MANASSAS/MANASSAS PARK ... FAIRFAX ... ARLINGTON/FALLS CHURCH/ALEXANDRIA ... NORTHERN FAUQUIER ... SOUTHERN FAUQUIER ... WESTERN LOUDOUN ... EASTERN LOUDOUN ... MORGAN ... BERKELEY ... JEFFERSON

Instructions:

You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.