Jun 26, 2015
A cluster of showers and thunderstorms formed along gust front and sea breeze front boundaries in southeastern Pennsylvania during the late evening of the 26th and had little movement before they dissipated early on the 27th. Consequently, very heavy rain fell along the Montgomery and Chester County border and flash flooding occurred. The heavy rain began between 930 p.m. and 1030 p.m. EDT on the 26th. The rain ended between 1 a.m. and 2 a.m. EDT on the 27th. Reported event precipitation totals
Source: NOAA National Weather Service Storm Events Database (event 586013). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Montgomery County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.