Flash Flood — Du Page, Illinois

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

Event narrative

A report was received of 1 to 2 feet of water on Gartner Rd in Naperville with vehicles stranded.

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 → (41.7561, -88.1424)

Source: NOAA Storm Events Database, event_id 1288877. Narrative written by the NWS forecast office that issued the report.