Jul 12, 2025
Showers and thunderstorms began to develop in a highly unstable and moist atmosphere during the afternoon hours of July 12, 2025. Thunderstorms largely remained sub-severe; however, low effective bulk shear values led to slow-moving thunderstorms to occur across potions of southern Pennsylvania, with rainfall rates exceeding two inches per hour across portions of Adams County.
Source: NOAA National Weather Service Storm Events Database (event 1278027). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Adams County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.