Flooding affected towns in the eastern and southern portions of Montgomery County, said Todd Stieritz, public affairs coordinator for the county’s Department of Public Safety. Since 4 p.m., he said, six cars had to be pulled from a flooded road in Lower Merion; one in Whitemarsh, and one in Lower Moreland. Downed trees struck two cars on Sumneytown Pike near North Wales, the weather service reported.