Sep 11, 2022
Scattered thunderstorms produced heavy rain during the morning of September 11th. A narrow swath of torrential rain fell across portions of the north side of Chicago causing widespread flash flooding and at least 2,000 basements to flood. Rainfall amounts of 2 to 4 inches were common across much of northern Illinois with a heavier swath of 4 to 6 inches over northwest Illinois and over northeast Illinois including central DuPage and central Cook Counties.
Source: NOAA National Weather Service Storm Events Database (event 1055210). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Cook County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.