Tornadoes · United States · Illinois
Tornadoes in Johnson County, Illinois
20 tornadoes have crossed Johnson County since 1950, 81st of the 102 counties in Illinois with a tornado on record, an average of one every 3.8 years. They have killed 1 person and injured 26. None was rated F4 or above.
The rating scale
Tracks are drawn in the color of the rating. The United States rated tornadoes on Ted Fujita’s F scale until 31 January 2007 and on the Enhanced Fujita scale after it. Both run from 0 to 5, and both rate the damage rather than measure the wind: the speeds are what that damage is taken to imply.
F0 / EF040 to 72 mph on the F scale, 65 to 85 mph on the EF scale
Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.
F1 / EF173 to 112 mph on the F scale, 86 to 110 mph on the EF scale
Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.
F2 / EF2113 to 157 mph on the F scale, 111 to 135 mph on the EF scale
Considerable damage. Roofs torn off well-built houses, frame homes shifted on their foundations, mobile homes destroyed, large trees snapped or uprooted, cars lifted off the ground.
F3 / EF3158 to 206 mph on the F scale, 136 to 165 mph on the EF scale
Severe damage. Whole stories of well-built houses destroyed, large buildings badly damaged, trains overturned, trees debarked, heavy cars lifted and thrown.
F4 / EF4207 to 260 mph on the F scale, 166 to 200 mph on the EF scale
Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.
F5 / EF5261 to 318 mph on the F scale, over 200 mph on the EF scale
Incredible damage. Strong frame houses swept off their foundations, car-sized missiles thrown more than 100 meters, steel-reinforced concrete badly damaged, high-rise buildings deformed.
Unrated
The survey recorded a tornado but could not put a number on it, most often because it crossed open country and damaged nothing a rating can be read from.
Now
- Tornadoes
- 20
- Deaths
- 1
- Injuries
- 26
- F4 and above
- 0
- Worst on record
- F3, April 28, 2002
The deadliest in Johnson County
The strongest
- F3, Union and Johnson counties, IllinoisApril 28, 2002
- EF3, Johnson County, IllinoisMay 26, 2024
- F2, Union and Johnson counties, IllinoisApril 14, 1972
- EF2, Pulaski, Massac and Johnson counties, IllinoisMay 25, 2011
- EF2, Johnson County, IllinoisMarch 15, 2025
- F2, Johnson and Pope counties, IllinoisOctober 18, 2004
- F2, Johnson, Williamson and Union counties, IllinoisOctober 18, 2004
- F2, Johnson County, IllinoisApril 28, 2002
- EF2, Johnson County, IllinoisApril 2, 2025
- F2, Johnson County, IllinoisJune 22, 1974
Every year with a tornado
The 14 years of the 76 in the record with a tornado in Johnson County. Each year links to every tornado in Illinois that year.
Every tornado that crossed Johnson County
20 tornadoes, newest first.
| Date | Time | Rating | Where | Path (mi) | Width (yd) | Deaths | Injuries | Damage |
|---|---|---|---|---|---|---|---|---|
| April 2, 2025 | 7:35 PM CDT | EF2 | Johnson | 6.2 | 250 | $525,000 | ||
| March 15, 2025 | 1:15 AM CDT | EF2 | Johnson | 15.6 | 150 | $1.0 million | ||
| May 26, 2024 | 8:13 PM CDT | EF1 | Union | 6.9 | 100 | $43,000 | ||
| May 26, 2024 | 6:38 PM CDT | EF3 | Johnson | 4.9 | 300 | 1 | $750,000 | |
| June 19, 2015 | 3:57 PM CDT | EF1 | Johnson | 0.4 | 50 | $5,000 | ||
| October 31, 2013 | 7:56 PM CDT | EF1 | Johnson | 0.7 | 50 | $30,000 | ||
| May 25, 2011 | 6:55 PM CDT | EF2 | Pulaski | 19.9 | 325 | $255,000 | ||
| October 18, 2004 | 7:43 PM CDT | F2 | Johnson | 14.0 | 300 | $200,000 | ||
| October 18, 2004 | 7:16 PM CDT | F2 | Johnson | 8.8 | 250 | 3 | $540,000 | |
| May 6, 2003 | 10:47 PM CDT | F0 | Johnson | 0.2 | 30 | |||
| May 6, 2003 | 10:27 PM CDT | F0 | Johnson | 0.2 | 30 | |||
| April 28, 2002 | 1:46 AM CDT | F2 | Johnson | 7.0 | 400 | 2 | $100,000 | |
| April 28, 2002 | 1:18 AM CDT | F3 | Union | 19.3 | 400 | 1 | 10 | $8.0 million |
| June 14, 1998 | 5:35 PM CDT | F0 | Johnson | 0.3 | 30 | $10,000 | ||
| April 13, 1998 | 9:09 PM CDT | F1 | Johnson | 1.0 | 40 | 1 | $60,000 | |
| May 15, 1986 | 6:35 PM CDT | F1 | Johnson | 6.0 | 10 | $5,000 to $50,000 | ||
| March 28, 1975 | 5:25 PM CDT | F0 | Johnson | 0.1 | 10 | |||
| June 22, 1974 | 5:00 PM CDT | F2 | Johnson | 0.1 | 10 | |||
| April 14, 1972 | 3:10 AM CST | F2 | Union | 30.9 | 30 | 9 | $5,000 to $50,000 | |
| December 18, 1957 | 6:00 PM GMT-6 | F2 | Johnson | 0.1 | 10 | $5,000 to $50,000 |
Nearby
Warnings in force in Johnson CountyThe forecast for Johnson CountyThe live radar over Johnson CountyEvery county in Illinois
What this means
Ratings are the survey's, read off the damage rather than measured; the rating scale is above. Tornado counts rise through the record as reporting improved, so a year in the 1950s is not comparable with one today except for the strongest tornadoes, which were always noticed.
Sources
NOAA Storm Prediction Center tornado database, 1950-2025, the official record kept by NOAA's Storm Prediction Center.