Storm History: Williamson County, Illinois
Every storm the National Weather Service has filed in Williamson County, Illinois: floods, hail, damaging wind, tornadoes, winter storms, heat and the rest, with the most serious on record. Events filed by forecast zone count for every county the zone covers.
The record
- Events
- 891
- Deaths
- 13
- Injuries
- 270
- Damage
- $501 million
- Episodes
- 776
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
Every year
By kind of event
Counted under the kind that heads each episode.
| Kind of event | Events | Deaths | Injuries | Damage |
|---|---|---|---|---|
| Hail | 123 | 0 | 0 | $13 million |
| Tornado | 108 | 10 | 237 | $479 million |
| Dense Fog | 107 | 0 | 0 | |
| Strong Wind | 69 | 0 | 0 | $105,000 |
| Thunderstorm Wind | 66 | 0 | 0 | $641,000 |
| Flash Flood | 59 | 0 | 0 | $2.2 million |
| Frost/Freeze | 55 | 0 | 0 | $30,000 |
| Heat | 53 | 1 | 30 | |
| Winter Weather | 53 | 0 | 0 | |
| Winter Storm | 39 | 0 | 0 | $1.0 million |
| Excessive Heat | 36 | 0 | 0 | |
| Drought | 29 | 0 | 0 | $3.5 million |
| Flood | 21 | 1 | 0 | $415,000 |
| Heavy Snow | 20 | 0 | 3 | |
| Cold/Wind Chill | 19 | 1 | 0 | |
| High Wind | 10 | 0 | 0 | $505,000 |
| Heavy Rain | 7 | 0 | 0 | |
| Ice Storm | 6 | 0 | 0 | $385,000 |
| Extreme Cold/Wind Chill | 4 | 0 | 0 | |
| Lightning | 4 | 0 | 0 | $130,000 |
| Funnel Cloud | 2 | 0 | 0 | |
| Dust Storm | 1 | 0 | 0 | $1,000 |
The deadliest
The costliest
Damage within this county, in the dollars of its year.
- Tornado, May 29, 1982
- Tornado, May 8, 2009
- Tornado, May 16, 2025
- Tornado, November 19, 1991
- Hail, June 30, 2023
- Drought, September 1, 2007
- Tornado, December 18, 1957
- Hail, May 2, 2002
- Flash Flood, May 10, 1996
- Flash Flood, April 28, 1996
- Winter Storm, February 11, 2008
- High Wind, September 14, 2008
- Winter Storm, January 26, 2009
- Tornado, April 2, 2024
- Flood, March 18, 2008
- Hail, May 25, 2002
- Tornado, April 3, 2018
- Ice Storm, January 5, 2025
- Tornado, June 2, 1973
- Tornado, April 19, 2011
The largest hail
The largest stone in each episode, which may have fallen in a neighboring county of the same episode.
The strongest tornadoes
- Tornado, December 18, 1957
- Tornado, May 29, 1982
- Tornado, January 7, 1989
- Tornado, February 29, 2012
- Tornado, May 16, 2025
- Tornado, August 21, 1977
- Tornado, April 2, 1982
- Tornado, November 19, 1991
- Tornado, November 17, 2013
- Tornado, February 28, 2017
- Tornado, May 26, 2024
- Tornado, April 3, 1968
- Tornado, March 25, 1970
- Tornado, June 2, 1973
- Tornado, November 29, 1975
Every episode, newest first
- Hail, April 27, 2026
- Dense Fog, April 25, 2026
- Strong Wind, April 2, 2026
- Strong Wind, February 17, 2026
- Dense Fog, February 15, 2026
- Cold/Wind Chill, January 30, 2026
- Extreme Cold/Wind Chill, January 25, 2026
- Winter Storm, January 24, 2026
- Cold/Wind Chill, January 23, 2026
- Strong Wind, January 14, 2026
- Strong Wind, January 8, 2026
- Dense Fog, November 23, 2025
- Dense Fog, November 22, 2025
- Dense Fog, November 20, 2025
- Drought, September 9, 2025
- Excessive Heat, August 14, 2025
- Excessive Heat, July 22, 2025
- Flash Flood, July 19, 2025
- Excessive Heat, July 16, 2025
- Dense Fog, July 9, 2025
- Dense Fog, July 8, 2025
- Hail, May 20, 2025
- Tornado, May 20, 2025
- Tornado, May 16, 2025
- Dense Fog, May 5, 2025
- Hail, May 1, 2025
- Tornado, March 30, 2025
- Strong Wind, March 28, 2025
- High Wind, March 19, 2025
- Strong Wind, March 18, 2025
- High Wind, March 14, 2025
- Strong Wind, March 5, 2025
- Strong Wind, March 4, 2025
- Cold/Wind Chill, February 19, 2025
- Heavy Snow, February 18, 2025
- Winter Weather, February 16, 2025
- Dense Fog, January 30, 2025
- Cold/Wind Chill, January 19, 2025
- Strong Wind, January 17, 2025
- Heavy Snow, January 10, 2025
- Ice Storm, January 5, 2025
- Winter Weather, December 2, 2024
- Frost/Freeze, October 17, 2024
- Frost/Freeze, October 16, 2024
- Strong Wind, September 27, 2024
- Excessive Heat, August 1, 2024
- Excessive Heat, July 29, 2024
- Hail, July 29, 2024
- Excessive Heat, July 14, 2024
- Thunderstorm Wind, July 5, 2024
- Excessive Heat, July 3, 2024
- Excessive Heat, June 29, 2024
- Excessive Heat, June 25, 2024
- Tornado, May 26, 2024
- Hail, May 23, 2024
- Dense Fog, May 18, 2024
- Flood, May 14, 2024
- Tornado, May 8, 2024
- Dense Fog, April 29, 2024
- Dense Fog, April 23, 2024
- Frost/Freeze, April 22, 2024
- Dense Fog, April 7, 2024
- Frost/Freeze, April 6, 2024
- Hail, April 2, 2024
- Tornado, April 2, 2024
- Strong Wind, March 25, 2024
- Dense Fog, March 2, 2024
- Strong Wind, February 27, 2024
- Heavy Snow, February 16, 2024
- Dense Fog, January 24, 2024
- Cold/Wind Chill, January 20, 2024
- Cold/Wind Chill, January 16, 2024
- Cold/Wind Chill, January 14, 2024
- Winter Weather, January 14, 2024
- Drought, January 1, 2024
- Frost/Freeze, October 30, 2023
- Excessive Heat, August 20, 2023
- Thunderstorm Wind, August 6, 2023
- Thunderstorm Wind, July 29, 2023
- Excessive Heat, July 27, 2023
- Flash Flood, July 19, 2023
- Thunderstorm Wind, July 16, 2023
- Hail, July 2, 2023
- Heat, July 1, 2023
- Hail, June 30, 2023
- Hail, June 29, 2023
- Excessive Heat, June 29, 2023
- Heat, June 25, 2023
- Hail, May 7, 2023
- Hail, May 7, 2023
- Strong Wind, April 20, 2023
- Hail, April 15, 2023
- Thunderstorm Wind, April 5, 2023
- Strong Wind, April 1, 2023
- Strong Wind, March 31, 2023
- Flash Flood, March 24, 2023
- Thunderstorm Wind, March 23, 2023
- Flash Flood, March 3, 2023
- Strong Wind, February 27, 2023
- Strong Wind, February 22, 2023
- Strong Wind, February 9, 2023
- Winter Storm, January 30, 2023
- Winter Weather, January 29, 2023
- Heavy Snow, January 24, 2023
- Winter Weather, December 26, 2022
- Winter Storm, December 22, 2022
- Dense Fog, December 9, 2022
- Dense Fog, December 6, 2022
- Drought, December 1, 2022
- Dense Fog, November 25, 2022
- Winter Weather, November 12, 2022
- Strong Wind, November 5, 2022
- Dense Fog, November 1, 2022
- Drought, November 1, 2022
- Frost/Freeze, October 17, 2022
- Drought, October 1, 2022
- Dense Fog, August 16, 2022
- Flash Flood, August 4, 2022
- Heat, August 3, 2022
- Heat, August 1, 2022
- Flash Flood, July 27, 2022
- Excessive Heat, July 22, 2022
- Excessive Heat, July 20, 2022
- Thunderstorm Wind, July 17, 2022
- Excessive Heat, July 4, 2022
- Excessive Heat, June 12, 2022
- Dense Fog, June 6, 2022
- Strong Wind, April 23, 2022
- Strong Wind, April 10, 2022
- Tornado, March 30, 2022
- Strong Wind, March 30, 2022
- Winter Weather, March 11, 2022
- Winter Storm, February 23, 2022
- Flash Flood, February 17, 2022
- Winter Storm, February 2, 2022
- Winter Weather, January 6, 2022
- Dense Fog, December 26, 2021
- Strong Wind, December 24, 2021
- Frost/Freeze, November 4, 2021
- Dense Fog, October 8, 2021
- Heat, August 24, 2021
- Heat, August 9, 2021
- Heat, July 29, 2021
- Thunderstorm Wind, July 10, 2021
- Thunderstorm Wind, June 29, 2021
- Tornado, May 6, 2021
- Dense Fog, April 25, 2021
- Frost/Freeze, April 19, 2021
- Frost/Freeze, April 1, 2021
- Strong Wind, March 25, 2021
- Dense Fog, March 16, 2021
- Flash Flood, March 11, 2021
- Strong Wind, March 10, 2021
- Winter Weather, February 17, 2021
- Cold/Wind Chill, February 16, 2021
- Winter Storm, February 14, 2021
- Cold/Wind Chill, February 14, 2021
- Winter Storm, February 10, 2021
- Winter Weather, January 27, 2021
- Winter Weather, January 1, 2021
- Strong Wind, November 14, 2020
- Frost/Freeze, November 1, 2020
- Frost/Freeze, October 5, 2020
- Dense Fog, August 22, 2020
- Heat, August 10, 2020
- Heat, July 17, 2020
- Dense Fog, July 2, 2020
- Flash Flood, July 1, 2020
- Frost/Freeze, May 9, 2020
- Dense Fog, April 24, 2020
- Frost/Freeze, April 15, 2020
- Strong Wind, April 13, 2020
- Hail, April 8, 2020
- Dense Fog, March 25, 2020
- Dense Fog, March 18, 2020
- Dense Fog, March 12, 2020
- Flash Flood, March 12, 2020
- Tornado, January 10, 2020
- Dense Fog, December 13, 2019
- Strong Wind, November 26, 2019
- Winter Weather, November 11, 2019
- Frost/Freeze, October 12, 2019
- Excessive Heat, August 12, 2019
- Dense Fog, August 8, 2019
- Excessive Heat, July 18, 2019
- Heat, July 10, 2019
- Flash Flood, June 22, 2019
- Flash Flood, June 21, 2019
- Flash Flood, May 29, 2019
- Thunderstorm Wind, May 26, 2019
- Flood, May 21, 2019
- Tornado, April 24, 2019
- Frost/Freeze, April 15, 2019
- Strong Wind, April 11, 2019
- Frost/Freeze, April 1, 2019
- Strong Wind, March 30, 2019
- Hail, March 13, 2019
- Flood, March 9, 2019
- Strong Wind, March 9, 2019
- Winter Weather, March 3, 2019
- Strong Wind, February 24, 2019
- Winter Storm, February 15, 2019
- Dense Fog, February 6, 2019
- Dense Fog, February 2, 2019
- Cold/Wind Chill, January 30, 2019
- Heavy Snow, January 19, 2019
- Heavy Snow, January 11, 2019
- Strong Wind, December 27, 2018
- Dense Fog, November 29, 2018
- Strong Wind, November 25, 2018
- Winter Storm, November 14, 2018
- Frost/Freeze, October 21, 2018
- Dense Fog, July 27, 2018
- Heat, July 20, 2018
- Flash Flood, July 15, 2018
- Excessive Heat, July 10, 2018
- Excessive Heat, July 1, 2018
- Heat, June 29, 2018
- Tornado, June 28, 2018
- Tornado, June 26, 2018
- Heat, June 16, 2018
- Tornado, May 31, 2018
- Hail, May 20, 2018
- Strong Wind, April 13, 2018
- Strong Wind, April 12, 2018
- Frost/Freeze, April 8, 2018
- Frost/Freeze, April 7, 2018
- Winter Weather, April 7, 2018
- Tornado, April 3, 2018
- Hail, April 2, 2018
- Strong Wind, March 6, 2018
- Flash Flood, February 24, 2018
- Flood, February 21, 2018
- Dense Fog, February 17, 2018
- Strong Wind, February 15, 2018
- Winter Weather, February 11, 2018
- Winter Weather, February 6, 2018
- Strong Wind, January 22, 2018
- Cold/Wind Chill, January 16, 2018
- Heavy Snow, January 15, 2018
- Winter Storm, January 11, 2018
- Dense Fog, January 9, 2018
- Cold/Wind Chill, January 1, 2018
- Strong Wind, November 18, 2017
- Tornado, November 18, 2017
- Flood, November 5, 2017
- Hail, September 4, 2017
- Heat, August 21, 2017
- Dense Fog, August 15, 2017
- Heat, July 26, 2017
Earlier years, state by state:
More
Tornadoes in Williamson CountyEvery warning in Williamson County since 1986Every county in Illinois
Sources
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24.