Heavy Rain — Will, Illinois

2025-08-18 · near (lot) Lewis University Airport, Will, Illinois

Event narrative

NWS WFO Chicago measured 1.51 of rain in the one hour between 5 and 6 PM CST.

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 → (41.6040, -88.0849)

Source: NOAA Storm Events Database, event_id 1288635. Narrative written by the NWS forecast office that issued the report.