Full Notification

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

* WHERE...Portions of DC, Maryland, 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, Charles, Frederick MD, Northern Baltimore, Northwest Harford, Northwest Howard, Northwest Montgomery, Prince Georges, Southeast Harford, Southern Baltimore and Washington. In Virginia, Albemarle, Arlington/Falls Church/Alexandria, Central Virginia Blue Ridge, Central and Southeast Prince William/Manassas/Manassas Park, Clarke, Culpeper, Eastern Loudoun, Fairfax, Frederick VA, Greene, King George, Madison, Nelson, Northern Fauquier, Northern Virginia Blue Ridge, Northwest Prince William, Orange, Rappahannock, Southern Fauquier, Spotsylvania, Stafford, Warren and Western Loudoun. In panhandle West Virginia, Berkeley, Jefferson and Morgan.

* WHEN...Until 4 AM EDT Sunday.

* IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas.

* ADDITIONAL DETAILS... - A seasonably moist airmass with ample moisture content ahead of an approaching frontal boundary will result in numerous showers and thunderstorms. These showers and thunderstorms will be capable of producing heavy rainfall with totals on the order of 1 to 3 inches with locally higher amounts where thunderstorms may train. These totals may result in flash flooding, particularly in urban areas and those that have observed recent heavy rainfall. - Please visit www.weather.gov/safety/flood for flood safety and preparedness information

* AFFECTED AREAS: DISTRICT OF COLUMBIA ... WASHINGTON ... FREDERICK ... CARROLL ... NORTHERN BALTIMORE ... CECIL ... SOUTHERN BALTIMORE ... PRINCE GEORGES ... ANNE ARUNDEL ... CHARLES ... NORTHWEST MONTGOMERY ... CENTRAL AND SOUTHEAST MONTGOMERY ... NORTHWEST HOWARD ... CENTRAL AND SOUTHEAST HOWARD ... NORTHWEST HARFORD ... SOUTHEAST HARFORD ... FREDERICK ... WARREN ... CLARKE ... NELSON ... ALBEMARLE ... GREENE ... MADISON ... RAPPAHANNOCK ... ORANGE ... CULPEPER ... FAIRFAX ... ARLINGTON/FALLS CHURCH/ALEXANDRIA ... STAFFORD ... SPOTSYLVANIA ... KING GEORGE ... NORTHERN FAUQUIER ... SOUTHERN FAUQUIER ... WESTERN LOUDOUN ... EASTERN LOUDOUN ... NORTHERN VIRGINIA BLUE RIDGE ... CENTRAL VIRGINIA BLUE RIDGE ... NORTHWEST PRINCE WILLIAM ... CENTRAL AND SOUTHEAST PRINCE WILLIAM/MANASSAS/MANASSAS PARK ... MORGAN ... BERKELEY ... JEFFERSON

Instructions:

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