Flash Flood — Will, Illinois

2025-08-18 to 2025-08-19 · near New Lenox, Will, Illinois

Event narrative

Numerous reports of street, yard, and basement flooding came out of the Joliet, Crest Hill, Lockport, and Homer Glen areas. In Homer Glen, a video shared via social media showed 1 to 2 feet of standing water on a residential street southwest of 167th St and Cedar Rd. Around 50 flooded structures were estimated amounting to roughly $250,000 in damages.

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 → (41.5133, -87.9646)

Source: NOAA Storm Events Database, event_id 1288630. Narrative written by the NWS forecast office that issued the report.