Flash Flood — Chester, Pennsylvania

2021-09-01 · near Nottingham, Chester, Pennsylvania

Event narrative

Widespread flash flooding occurred in Chester County with many road closures and vehicles stranded. There was a flood related fatality in Downingtown. Numerous waterways in the county flooded, including the Schuylkill River, the West Branch of the Brandywine Creek, the East Branch of the Brandywine Creek, White Clay Creek, Red Clay Creek, French Creek and Valley Creek. There were many reports of water entering buildings and homes.

Wider weather episode

Post Tropical Cyclone Ida brought heavy rain to eastern Pennsylvania on September 1. Rainfall totals were as high as 5 to 10 inches. The heavy rain caused significant flash flooding, mainly in the southeastern part of the state. It resulted in widespread property damage. There were several fatalities.

View location on OpenStreetMap → (39.7341, -76.0393)

Source: NOAA Storm Events Database, event_id 981414. Narrative written by the NWS forecast office that issued the report.