Sep 20, 2025
Widespread pulse thunderstorms produced locally heavy rain across the Midlands, including isolated flash flooding in the Columbia metro in the evening of September 20th. Above average precipitable water, a weak approaching trough, and little wind shear produced slow moving storms with highly efficient rain rates of 3-4 inches per hour.
Source: NOAA National Weather Service Storm Events Database (event 1294827). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Richland County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.