At 458 PM EDT, the public and doppler radar reported thunderstorms produced heavy rain across the warned area. Between 1 and 1.5 inches of rain have fallen. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Public reported. 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, Bethel Park, McKeesport, West Mifflin, Baldwin, Whitehall, South Park Township, Munhall, Jefferson Hills, North Versailles, Brentwood, Pleasant Hills, White Oak, Clairton, Duquesne, Glassport, Homestead, Liberty, Port Vue and East Mckeesport.