Update - 8 p.m. - The National Weather Service has elevated Monday's flash flood watch to a flash flood warning, effective until 10:45 p.m.
Heavy rains sweeping through the area have dropped as much as 1-inch of water, capable of producing flash flooding in low-lying areas.
"Excessive runoff from heavy rainfall will cause flash flooding of small creeks and streams," reads the warning.
Earlier today, the Prince George's County Fire Department released a list of roads in the county which are prone to flooding during heavy rains:
Baltimore Ave and Ammendale Road in Beltsville
Sunnyside Avenue between Rhode Island Ave and Edmonston Rd in Beltsville
Piney Branch Rd and New Hampshire in Adelphi
Portions of Riverdale Road in Riverdale Park
Governors Bridge Road at Anne Arundel/Prince George's County border. Road is currently closed for bridge work (unrelated to this storm)
Water Street in Upper Marlboro
Marlboro Pike and Largo Rd in Upper Marlboro
Livingston Road and Oxon Hill Road in Ft Washington
Livingston Road and Palmer Road in Fort Washington
These roads should be avoided during periods of heavy rain and heed any signage posted. Any and all roads could suddenly become overwhelmed by flooding waters. Do not drive through standing or swift moving water.
Original Article - The National Weather Service has issued a flash flood watch for much of the region, including Prince George's County.
Showers and thunderstorms are moving through the area Monday morning and could dump one to three inches of rain locally. More showers and thunderstorms are expected Monday afternoon that could result in an additional one to three inches of rain, according to NWS.
These large amounts of rain could lead to flash flooding. The Prince George's County Office of Emergency Management warns residents to stay away from rising waters and to "Turn around, don't drown."
The flash flood watch is in effect until midnight Tuesday.