Heavy Rain — Richland, South Carolina

2025-09-20 · near Columbia, Richland, South Carolina

Event narrative

RCWINDs rain gauge measured 1.34 inches of rain in 30 min.

Wider weather episode

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.

View location on OpenStreetMap → (34.0000, -81.0400)

Source: NOAA Storm Events Database, event_id 1294828. Narrative written by the NWS forecast office that issued the report.