Flash Flood — Richland, South Carolina

2025-06-13 · near Olympia Mills, Richland, South Carolina

Event narrative

USGS stream gage on Rocky Branch Creek at Main and Whaley St fell below flood stage of 7.3 feet between 11:12pm and 11:14pm.

Wider weather episode

Diurnally driven convection developed within a moist and unstable air mass characterized by CAPE values greater than 2000 J/kg with weak wind shear and precipitable water values over 2 inches and dewpoints in the lower 70s. Storms were slow moving and trained across Richland and Sumter counties resulting in flash flooding. Isolated strong storms produced severe wind damage northwest of Sumter.

View location on OpenStreetMap → (33.9877, -81.0277)

Source: NOAA Storm Events Database, event_id 1261243. Narrative written by the NWS forecast office that issued the report.