At 320 PM EDT, Doppler radar indicated additional thunderstorms producing heavy rain moving across the warned area. Between 0.5 and 1.8 inches of rain have fallen. Additional rainfall amounts of 0.2 to 0.5 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar indicated. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. Some locations that will experience flash flooding include... Pittsburgh, Penn Hills, Monroeville, Vandergrift, Plum, West Mifflin, Murrysville, Wilkinsburg, New Kensington, Lower Burrell, Munhall, Harrison Township, North Versailles, Swissvale, O'hara Township, Forest Hills, Wilkins Township, Oakmont, Duquesne and Fox Chapel.