FloodZoneMap.org

Flood — Cook, IL

Mar 14, 2024

Periods of heavy rain fell across portions of northern Illinois during the morning of March 14th producing localized flooding. Storm total rainfall amounts included 1.83 inches two miles southwest of Mokena; 1.69 inches near Oak Forest; 1.65 inches three miles east of New Lenox; 1.65 inches near Homewood; 1.39 inches near Midlothian; 1.38 inches near Homer Glen and 1.37 inches in Joliet.

Source: NOAA National Weather Service Storm Events Database (event 1162426). Narrative written by NWS staff at the time of the event.

Flood Risk Context for Cook, IL

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.

View Cook County flood data →

More Flood Stories

Flood1 death

Cook, IL · Aug 4, 1998

Thunderstorms produced heavy rain over southern Kane, much of Du Page and part of Cook County. Heavier rainfall amounts included 2.72 inches at Aurora, 2.51 inches at Burr Ridge, 2.5 inches at Bolingbrook, 2.23 inches near Midway Airport and 1.99 inches at Willow Springs.

Read the full account →
Flash Flood$230.0M damage

Cook, IL · Aug 17, 2025

A series of thunderstorms brought torrential rainfall and widespread flooding to much of the Chicago metro area, namely the south and west suburbs and up into the city of Chicago. Several Oswego District 308 schools received water and storm damage.

Read the full account →
Flash Flood$200.0M damage

Cook, IL · Jul 25, 2025

Isolated thunderstorms produced funnel clouds across central Illinois during the late morning of July 25th. A narrow line of thunderstorms developed over southeast DuPage and central Cook Counties during the late morning of July 25th and continued into the early afternoon…

Read the full account →
Flash Flood$500.0M damage

Cook, IL · Jul 2, 2023

An extreme rainfall event occurred on July 2 in the Chicago metropolitan area caused by multiple nearly stationary bands of showers and thunderstorms near a slow-moving low pressure area.

Read the full account →