Flood Watch issued May 30 at 3:17PM EDT until May 31 at 6:00AM EDT by NWS Baltimore MD/Washington DC

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

* WHERE…Portions of DC, including the following , District of
Columbia, Maryland, including the following areas, Anne Arundel,
Calvert, Carroll, Cecil, Central and Southeast Howard, Central and
Southeast Montgomery, Charles, Northern Baltimore, Northwest
Harford, Northwest Howard, Northwest Montgomery, Prince Georges,
Southeast Harford, Southern Baltimore and St. Marys, and Virginia,
including the following areas, Arlington/Falls Church/Alexandria,
Central and Southeast Prince William/Manassas/Manassas Park,
Eastern Loudoun, Fairfax, King George, Northwest Prince William,
Spotsylvania and Stafford.

* WHEN…From 7 PM EDT this evening through late tonight.

* 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. Localized
considerable flooding is possible.

* ADDITIONAL DETAILS…
– As a slow-moving frontal system tracks across the area,
multiple rounds of showers and thunderstorms are possible. A
round of thunderstorms with heavy rain will move into the
area early this evening, followed by a shift to a slow moving
complex of moderate to heavy rain into the late evening and
night. An area of total rainfall of 1 to 2 inches is likely,
with localized amounts up to 5 inches possible. Thunderstorms
may produce rain rates of 1 to 2 inches per hour.
– Please visit www.weather.gov/safety/flood for flood safety
and preparedness information