85
Recorded events
39
Direct deaths
771
Direct injuries
$118.3M
Property damage
Tornado in Cook County, Illinois: 85 recorded events between 1954 and 2025. The strongest on record measured F4. That places the county #97 nationally and #4 statewide for this hazard.
Decade by decade
Tornado in Cook County, Illinois: events per decade
Reporting practice changed over time — early decades are undercounted, not calmer.
The busiest decade for tornado in Cook County is the 2020s, when 30 of the county's 85 recorded events were logged. Comparing decades is useful for spotting active periods, but the earliest years are thin because systematic reporting for this hazard began later.
Within the Cook County archive, tornado makes up 3.2% of all recorded severe weather across 8 hazard types. Nationally the county sits at #97 for this hazard and #4 within Illinois, putting it in the 96.8 percentile of all U.S. counties.
Seasonality
Events by month
Jul is the peak month for tornado in Cook County with 23 recorded events, while Jan is the quietest. Seasonality here is a property of the archive as much as the climate: reports cluster where population and spotter networks are densest.
Tornado tracks
Paths crossing this county
| Date | Scale | Path length | Max width | Origin |
|---|---|---|---|---|
| 1967-04-21 | EF4 | 15.0 mi | 200 yd | Touched down here |
| 1976-06-13 | EF4 | 3.3 mi | 1,760 yd | Touched down here |
| 2021-06-20 | EF3 | 17.6 mi | 600 yd | Crossed in |
| 1991-03-27 | EF3 | 15.0 mi | 200 yd | Crossed in |
| 1976-03-12 | EF2 | 15.1 mi | 150 yd | Touched down here |
| 1965-11-12 | EF2 | 35.9 mi | 120 yd | Crossed in |
| 1966-06-09 | EF2 | 2.5 mi | 10 yd | Touched down here |
| 1961-03-04 | EF2 | 7.9 mi | 100 yd | Touched down here |
| 2024-07-15 | EF2 | 34.6 mi | 325 yd | Crossed in |
| 2008-06-07 | EF2 | 6.5 mi | 150 yd | Crossed in |
Significant events
Deadliest on record
| Date | Location | Scale | Deaths | Injuries | Damage |
|---|---|---|---|---|---|
| Apr 21, 1967 | F4 | 33 | 500 | $25.0M | |
| Mar 12, 1976 | F2 | 2 | 41 | $2.5M | |
| Jun 13, 1976 | F4 | 2 | 23 | $2.5M | |
| Mar 4, 1961 | F2 | 1 | 115 | $25.0M | |
| Jun 9, 1966 | F2 | 1 | 30 | $0 | |
| Sep 27, 1959 | F1 | 0 | 14 | $250K | |
| Sep 29, 1986 | F1 | 0 | 10 | $250K | |
| Jun 23, 1962 | F2 | 0 | 10 | $250K |
Most recent
Latest recorded events
| Date | Location | Magnitude | Damage |
|---|---|---|---|
| Mar 19, 2025 | LYNWOOD | EF0 | $0 |
| Jul 16, 2024 | UKRAINIAN VILLAGE | EF0 | $0 |
| Jul 16, 2024 | ASHBURN | EF1 | $0 |
| Jul 16, 2024 | EAST GARFIELD PARK | EF1 | $0 |
| Jul 16, 2024 | MARKHAM | EF0 | $0 |
| Jul 16, 2024 | FLOSSMOOR | EF1 | $0 |
| Jul 16, 2024 | OAK FOREST | EF0 | $0 |
| Jul 16, 2024 | PALOS HEIGHTS | EF0 | $0 |
| Jul 16, 2024 | MATTESON | EF2 | $0 |
| Jul 16, 2024 | WILLOW SPRINGS | EF1 | $0 |
Other hazards here
More from Cook County
- Thunderstorm Wind 1,384
- Hail 639
- Flood 209
- Flash Flood 191
- Heavy Rain 61
- Lightning 57
From the record
What the reports say
Written by National Weather Service staff at the time of the event · public domain
A tornado touched down in South Chicago Heights in the Schubert's Woods Forest Preserve just north of Sauk Trail and west of Forest Preserve Drive. This tornado then tracked northeast across the forest, eventually emerging from the forest near Euclid and west 26th Streets. At this location, large trees were uprooted and portions of a roof were lifted off a large warehouse building. The tornado continued northeast across residential areas north of 26th Street and west of Chicago Road. In this neighborhood, several homes sustained minor damage with two houses sustaining significant damage from large trees falling onto the homes. The tornado continued northeast across Chicago Road eventually lifting near 16th Street and Center Street. Damage to trees was noted all along the path including several large uprooted or snapped in half.
There was an intense narrow path of damage starting just southeast of the intersection of Lincoln Highway and Governors Highway. The concentrated path went from near Memorial Park to the train platform at Main Street and Hickory. In this neighborhood many large limbs were down and some trees were uprooted. A garage was destroyed and the roof of the train platform was damaged. Winds through this area were likely 90 to 105 mph, which is EF1 on the enhanced Fujita Scale. The path of the damage was from northwest to southeast, but many of the trees were blown from southwest to northeast, across the damage path. This indicated there was likely rotation. Several residents reported seeing rotation or a funnel cloud in this area. Lighter damage continued southeast of the railroad tracks near Wildwood Park and east to the Norwood Plaza at Western and 26th Street. It appears that the tornado dissipated in the forest preserve near 26th Street.
Based on eyewitness accounts, a condensation funnel may not have been visible, but damage to roofs of three buildings in an industrial park along Wise Road just west of Mitchell Boulevard show signs of uplift but minimal winds. Only a couple of tree limbs were knocked down in the area. An eyewitness observed roofing material and insulation lifted into the air and swirling rapidly. Witnesses also observed rotation in a low hanging cloud base.
Quick answers
Frequently asked
How many tornado events are on record in Cook County, Illinois?
85 tornado events are recorded in Cook County between 1954 and 2025, causing 39 direct deaths.
What is the strongest tornado recorded in Cook County?
The strongest tornado on record in Cook County measured F4.
Where does the tornado data for Cook County come from?
All events come from the NOAA/NCEI Storm Events Database, the federal public-domain archive of severe weather reports. Dates are UTC, damage is as reported and not inflation-adjusted, and the most recent entries may still be revised.
Cite this page
“Tornado in Cook County, Illinois.” Severe Weather History. severeweatherhistory.com/county/illinois/cook-county/tornado/ · Data: NOAA/NCEI, FEMA, U.S. Census — public domain.