May 4, 2025
Upper level low pressure was situated over the Middle Ohio Valley on May 4th. Spokes of mid-level vorticity rotating around the low supported the development of showers and thunderstorms. Although most of the activity remained sub-severe, there was one strong storm that generated a number of large hail reports between one and 2.5 inches in diameter, particularly in Indiana County. Later in the evening, additional slow-moving storms in weak overall flow led to several reports of flash flooding, w
Source: NOAA National Weather Service Storm Events Database (event 1265377). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Armstrong County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.