Flash Flood — Du Page, Illinois

2025-08-18 · near Darien, Du Page, Illinois

Event narrative

Photos shared via social media showed 6 to 8 inches of water on Washington St in Darien, with flooding also impacting homes.

Wider weather episode

During the afternoon and evening of the 18th, a few rounds of thunderstorms brought torrential rainfall to much of northern Illinois resulting in flash flooding. One particularly strong storm also produced damaging winds in DeKalb County. Initial reports estimate $8.8 million in flood damages around northern and northeast Illinois, and around $2.5 million in the city of Chicago alone.

View location on OpenStreetMap → (41.7604, -87.9799)

Source: NOAA Storm Events Database, event_id 1288627. Narrative written by the NWS forecast office that issued the report.