Thunderstorms dumping heavy rain across the northern Atlanta metro have triggered a flash flood warning covering five counties until 9:45 tonight, while several rivers in the area have already risen above flood stage.
What’s happening: The National Weather Service issued the flash flood warning at 3:51 p.m. for central Cobb, DeKalb, northern Douglas, central Fulton, and west central Gwinnett counties. Between 1 and 2 inches of rain had already fallen by that time, with another 1 to 2 inches possible before the warning expires. Flooding is affecting or expected to affect small creeks, streams, highways, streets, underpasses, and low-lying areas.
Cities under the warning include Atlanta, Marietta, Douglasville, Decatur, Peachtree Corners, City of South Fulton, Sandy Springs, Roswell, Johns Creek, Alpharetta, Smyrna, Dunwoody, East Point, Duluth, College Park, Chamblee, Norcross, Doraville, Clarkston, and Austell…