Jun 30, 2025
A slow-moving warm front in an extremely moist (PWAT values exceeding 2.00, values closer to 2.25 across the Lower Susquehanna Valley) and unstable environment allowed for multiple clusters of thunderstorms to begin to form during the late morning hours and continue through the late evening hours of June 30, 2025. A shortwave trough stationed across the region allowed for enhanced lift, with relatively weak shear in place, bringing a severe threat in the form of wet downbursts and a flash flood
Source: NOAA National Weather Service Storm Events Database (event 1269065). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Lebanon County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.