The National Weather Service has issued a flash-flood warning for central Allegheny County and central Washington County until 7:30 p.m. on Wednesday evening.
Between 1.5 and 3 inches of rain had already fallen in those areas as of 6 p.m., according to the National Weather Service, with another 1 to 2 inches expected.
According to the advisory the major impact will be to “small creeks and streams, urban areas, highways, streets and underpasses as well as other poor-drainage and low-lying areas.”
Areas at risk for flooding, according to NWS officials, include Pittsburgh, Penn Hills, Mount Lebanon, Bethel Park, McMurray, McKeesport, Shaler Township, West Mifflin, North Side Pittsburgh, Baldwin, Upper St. Clair, Scott Township, Wilkinsburg, Whitehall, South Park Township, Robinson Township, Munhall, Jefferson Hills, Brentwood and Swissvale.
For the latest weather forecast and advisories, see Weather.gov.