Jun 27, 2013
A MCV and broader mid-level trough crossed the central Appalachians and triggered strong to severe thunderstorms from the central ridges into the Susquehanna River Valley during the afternoon and evening. Very high boundary layer moisture and humidity contributed to heavy rainfall/flash flooding and precipitation loading within consolidating convection. While the deep layer flow and shear were somewhat modest, ambient vertical vorticity just ahead of the MCV and low LCLs aided in the development
Source: NOAA National Weather Service Storm Events Database (event 453003). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Clinton County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.