Jul 23, 2013
The combination of a stalled frontal boundary, extending from the Pennsylvania/Maryland border eastward across southern New Jersey, and a series of upper level disturbances resulted in numerous slow-moving thunderstorms from the afternoon of the 22nd through the early morning of the 23rd. These thunderstorms produced torrential rain and some wind damage.||Storm total rainfall measurements ranged mainly between 2 and 7 inches across eastern Pennsylvania. Run-off from waves of heavy precipitation
Source: NOAA National Weather Service Storm Events Database (event 469971). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Philadelphia County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.