Flash Flood — Delaware, Pennsylvania

2025-07-09 · near Markham, Delaware, Pennsylvania

Event narrative

Flash flooding was reported along US 202.

Wider weather episode

A slow-moving cold front produced heavy rain and flash flooding across portions of the region. This is the same front that caused flash flooding the day prior.

View location on OpenStreetMap → (39.8837, -75.5300)

Source: NOAA Storm Events Database, event_id 1284374. Narrative written by the NWS forecast office that issued the report.