Flash Flood in De Kalb County, Illinois

Flash Flood August 18, 2025 · De Kalb County, Illinois

Where the report was made, with tornadoes recorded within 15 miles over the years.

What the National Weather Service wrote

A video shared to social media showed at least a foot of water flowing over Chicago Rd east of Paw Paw.

The wider storm

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.

Began near Rollo (41.6886, -88.9363).

Source: NOAA Storm Events Database, event 1288632. Narratives are written by the National Weather Service forecast office that issued the report.

Tornadoes near your address

See every tornado that passed near a place you know, measured to its path.