Sep 2, 2013
A lee side trof in combination with an upper air disturbance triggered clusters of showers and thunderstorms with torrential downpours to occur in southeast Pennsylvania during the late morning into the early afternoon on the 2nd. This caused urban, poor drainage and small creek flash flooding. Event precipitation totals reached between 1.0 and 3.5 inches in many areas in and around the local Philadelphia area and marred traveling plans on this Labor Day.
Source: NOAA National Weather Service Storm Events Database (event 477654). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Delaware County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.