Storm History: Winnebago County, Illinois
Every storm the National Weather Service has filed in Winnebago 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
- 888
- Deaths
- 7
- Injuries
- 15
- Damage
- $41 million
- Episodes
- 517
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 |
|---|---|---|---|---|
| Tornado | 207 | 2 | 8 | $2.9 million |
| Hail | 170 | 0 | 1 | $134,000 |
| Thunderstorm Wind | 119 | 1 | 3 | $5.1 million |
| Flash Flood | 117 | 0 | 3 | $26 million |
| Flood | 85 | 1 | 0 | $6.0 million |
| Winter Storm | 41 | 0 | 0 | |
| High Wind | 28 | 0 | 0 | $146,000 |
| Drought | 25 | 0 | 0 | |
| Extreme Cold/Wind Chill | 16 | 0 | 0 | |
| Winter Weather | 14 | 0 | 0 | |
| Ice Storm | 11 | 0 | 0 | |
| Heavy Snow | 10 | 0 | 0 | |
| Cold/Wind Chill | 9 | 0 | 0 | |
| Excessive Heat | 7 | 0 | 0 | |
| Dust Storm | 7 | 0 | 0 | |
| Strong Wind | 6 | 0 | 0 | $25,000 |
| Blizzard | 5 | 0 | 0 | |
| Lightning | 3 | 0 | 0 | $10,000 |
| Heat | 3 | 3 | 0 | |
| Heavy Rain | 2 | 0 | 0 | |
| Funnel Cloud | 2 | 0 | 0 | |
| Frost/Freeze | 1 | 0 | 0 |
The deadliest
The costliest
Damage within this county, in the dollars of its year.
- Flash Flood, September 4, 2006
- Flood, June 10, 2008
- Thunderstorm Wind, July 5, 2003
- Flash Flood, August 7, 2007
- Flash Flood, July 13, 2024
- Flash Flood, July 23, 2010
- Tornado, November 22, 2010
- Tornado, June 28, 2017
- Flash Flood, June 18, 2018
- Tornado, July 14, 2024
- Tornado, May 25, 2011
- Tornado, August 18, 2015
- Tornado, May 22, 2011
- Tornado, August 17, 1979
- High Wind, October 26, 2010
- Thunderstorm Wind, March 24, 2009
- Thunderstorm Wind, July 4, 1995
- Hail, August 26, 2014
- Flash Flood, June 18, 2010
- Hail, June 17, 2014
The largest hail
The largest stone in each episode, which may have fallen in a neighboring county of the same episode.
- Hail, May 15, 2025
- Flood, April 4, 2023
- Hail, April 7, 2020
- Flood, May 2, 2018
- Hail, April 5, 2010
- Hail, April 13, 2006
- Flood, May 19, 2005
- Hail, April 10, 1981
- Flash Flood, July 10, 2025
- Hail, June 29, 2023
- Hail, September 7, 2021
- Hail, April 10, 2017
- Hail, May 15, 2017
- Hail, April 12, 2014
- Flash Flood, May 12, 2014
The strongest tornadoes
- Tornado, August 28, 1990
- Tornado, April 11, 1965
- Tornado, April 21, 1967
- Tornado, April 9, 2015
- Tornado, November 15, 1988
- Tornado, June 14, 1974
- Tornado, June 13, 1975
- Tornado, March 27, 1991
- Tornado, January 7, 2008
- Tornado, February 28, 2017
- Tornado, March 10, 2026
- Tornado, June 11, 2026
- Tornado, August 30, 1958
- Tornado, June 11, 1967
- Tornado, June 22, 1974
Every episode, newest first
- Excessive Heat, June 29, 2026
- Tornado, June 11, 2026
- Tornado, April 17, 2026
- Flash Flood, April 15, 2026
- Flash Flood, April 14, 2026
- Winter Storm, March 15, 2026
- High Wind, March 13, 2026
- Tornado, March 10, 2026
- Extreme Cold/Wind Chill, January 23, 2026
- Cold/Wind Chill, January 19, 2026
- High Wind, December 28, 2025
- Cold/Wind Chill, December 14, 2025
- Winter Storm, December 6, 2025
- Winter Storm, November 28, 2025
- Flash Flood, August 18, 2025
- Flash Flood, July 25, 2025
- Thunderstorm Wind, July 16, 2025
- Flash Flood, July 10, 2025
- Thunderstorm Wind, June 25, 2025
- Excessive Heat, June 21, 2025
- Flood, June 18, 2025
- Tornado, June 3, 2025
- Dust Storm, May 16, 2025
- Hail, May 15, 2025
- Tornado, March 14, 2025
- High Wind, February 28, 2025
- Cold/Wind Chill, February 17, 2025
- Cold/Wind Chill, February 17, 2025
- Winter Weather, February 12, 2025
- Winter Weather, February 5, 2025
- Drought, November 1, 2024
- Drought, October 15, 2024
- Tornado, July 15, 2024
- Tornado, July 14, 2024
- Flash Flood, July 13, 2024
- Tornado, June 22, 2024
- Dust Storm, June 16, 2024
- Hail, May 24, 2024
- Thunderstorm Wind, May 21, 2024
- Tornado, May 7, 2024
- Hail, May 4, 2024
- Thunderstorm Wind, April 16, 2024
- Winter Storm, March 22, 2024
- Tornado, February 27, 2024
- Winter Weather, January 22, 2024
- Extreme Cold/Wind Chill, January 14, 2024
- Winter Storm, January 12, 2024
- Winter Storm, January 8, 2024
- Drought, October 1, 2023
- Drought, September 1, 2023
- Excessive Heat, August 23, 2023
- Hail, August 17, 2023
- Excessive Heat, July 26, 2023
- Thunderstorm Wind, July 26, 2023
- Drought, July 1, 2023
- Hail, June 29, 2023
- Thunderstorm Wind, June 24, 2023
- Hail, April 20, 2023
- Flood, April 4, 2023
- Tornado, March 31, 2023
- Winter Storm, March 25, 2023
- Winter Storm, March 9, 2023
- Ice Storm, February 22, 2023
- Winter Storm, February 16, 2023
- Thunderstorm Wind, February 14, 2023
- Winter Storm, January 28, 2023
- Winter Storm, December 22, 2022
- Extreme Cold/Wind Chill, December 22, 2022
- Tornado, November 5, 2022
- Thunderstorm Wind, September 20, 2022
- Flood, August 28, 2022
- Flash Flood, August 8, 2022
- Heat, July 5, 2022
- Flash Flood, July 5, 2022
- Flood, July 4, 2022
- Excessive Heat, June 13, 2022
- Flash Flood, May 13, 2022
- Tornado, April 30, 2022
- Winter Weather, April 2, 2022
- Thunderstorm Wind, March 25, 2022
- Thunderstorm Wind, March 5, 2022
- Drought, March 1, 2022
- Winter Weather, February 24, 2022
- Flash Flood, February 22, 2022
- Winter Weather, February 18, 2022
- Drought, February 1, 2022
- Extreme Cold/Wind Chill, January 25, 2022
- Winter Weather, January 22, 2022
- Winter Weather, January 8, 2022
- Drought, January 1, 2022
- Winter Storm, January 1, 2022
- High Wind, December 15, 2021
- Drought, December 1, 2021
- Drought, November 1, 2021
- Drought, October 1, 2021
- Hail, September 7, 2021
- Drought, September 1, 2021
- Flash Flood, August 24, 2021
- Thunderstorm Wind, August 11, 2021
- Tornado, August 10, 2021
- Tornado, August 9, 2021
- Drought, August 1, 2021
- Thunderstorm Wind, July 14, 2021
- Funnel Cloud, July 7, 2021
- Drought, July 1, 2021
- Drought, June 1, 2021
- Thunderstorm Wind, April 29, 2021
- Cold/Wind Chill, February 14, 2021
- Extreme Cold/Wind Chill, February 13, 2021
- Winter Storm, February 4, 2021
- Winter Storm, January 30, 2021
- Winter Storm, January 25, 2021
- Winter Weather, January 19, 2021
- Ice Storm, January 1, 2021
- Winter Storm, December 29, 2020
- Tornado, November 10, 2020
- Tornado, August 10, 2020
- Flood, June 29, 2020
- Flash Flood, June 26, 2020
- Tornado, June 9, 2020
- Tornado, May 23, 2020
- Hail, April 7, 2020
- Tornado, March 28, 2020
- Ice Storm, January 10, 2020
- High Wind, November 27, 2019
- Winter Weather, October 31, 2019
- Flood, October 6, 2019
- Flash Flood, September 12, 2019
- Flood, September 3, 2019
- Thunderstorm Wind, July 20, 2019
- Excessive Heat, July 18, 2019
- Hail, July 14, 2019
- Flash Flood, July 2, 2019
- Tornado, June 30, 2019
- Winter Storm, April 27, 2019
- Flood, March 13, 2019
- Winter Weather, February 27, 2019
- High Wind, February 24, 2019
- Winter Weather, February 17, 2019
- Ice Storm, February 11, 2019
- Ice Storm, February 5, 2019
- Extreme Cold/Wind Chill, January 29, 2019
- Winter Weather, January 22, 2019
- Winter Storm, January 18, 2019
- Winter Storm, November 25, 2018
- High Wind, October 20, 2018
- Flood, October 4, 2018
- Thunderstorm Wind, September 25, 2018
- Tornado, September 3, 2018
- Flood, August 28, 2018
- Thunderstorm Wind, August 26, 2018
- Thunderstorm Wind, July 13, 2018
- Thunderstorm Wind, July 1, 2018
- Tornado, June 26, 2018
- Flash Flood, June 18, 2018
- Flash Flood, June 15, 2018
- Flash Flood, June 9, 2018
- Flood, May 2, 2018
- Winter Storm, February 8, 2018
- Extreme Cold/Wind Chill, January 1, 2018
- Flash Flood, July 21, 2017
- Hail, July 20, 2017
- Flood, July 19, 2017
- Flood, July 5, 2017
- Tornado, June 28, 2017
- Tornado, May 17, 2017
- Hail, May 15, 2017
- Hail, April 10, 2017
- High Wind, March 8, 2017
- Tornado, February 28, 2017
- Thunderstorm Wind, August 4, 2016
- Flash Flood, July 29, 2016
- Lightning, July 28, 2016
- Flash Flood, July 23, 2016
- Thunderstorm Wind, July 21, 2016
- Flash Flood, June 14, 2016
- Hail, June 9, 2016
- High Wind, March 16, 2016
- Hail, March 15, 2016
- High Wind, February 19, 2016
- Ice Storm, December 28, 2015
- Heavy Snow, November 20, 2015
- Thunderstorm Wind, November 11, 2015
- Thunderstorm Wind, September 17, 2015
- Tornado, August 18, 2015
- Hail, July 17, 2015
- Hail, July 13, 2015
- Tornado, April 9, 2015
- Blizzard, February 1, 2015
- Hail, August 26, 2014
- Flood, August 1, 2014
- Hail, June 25, 2014
- Hail, June 17, 2014
- Flash Flood, May 12, 2014
- Flash Flood, May 11, 2014
- Hail, April 12, 2014
- Extreme Cold/Wind Chill, January 27, 2014
- Winter Storm, January 26, 2014
- Extreme Cold/Wind Chill, January 6, 2014
- Winter Weather, December 29, 2013
- Heavy Snow, December 21, 2013
- Tornado, November 17, 2013
- Thunderstorm Wind, July 22, 2013
- Flash Flood, June 26, 2013
- Flood, June 22, 2013
- Thunderstorm Wind, June 21, 2013
- Tornado, June 12, 2013
- Hail, May 30, 2013
- Hail, May 19, 2013
- Hail, April 29, 2013
- Hail, April 9, 2013
- Flood, March 10, 2013
- Winter Storm, March 5, 2013
- Hail, September 4, 2012
- Flash Flood, August 4, 2012
- Tornado, July 31, 2012
- High Wind, July 25, 2012
- Drought, July 24, 2012
- Thunderstorm Wind, July 24, 2012
- Flash Flood, July 18, 2012
- Excessive Heat, July 4, 2012
- Hail, May 26, 2012
- Flood, March 17, 2012
- Winter Storm, January 20, 2012
- High Wind, September 29, 2011
- Flood, September 26, 2011
- Hail, August 20, 2011
- Flood, August 13, 2011
- Flood, July 27, 2011
- Thunderstorm Wind, July 11, 2011
- Flash Flood, June 8, 2011
- Flash Flood, May 29, 2011
- Tornado, May 25, 2011
- Tornado, May 22, 2011
- Flood, May 11, 2011
- Flood, April 19, 2011
- Strong Wind, April 15, 2011
- Flood, March 20, 2011
- Extreme Cold/Wind Chill, February 10, 2011
- Blizzard, February 1, 2011
- Winter Storm, December 11, 2010
- Tornado, November 22, 2010
- High Wind, October 27, 2010
- High Wind, October 26, 2010
- Tornado, October 26, 2010
- Hail, September 21, 2010
- Strong Wind, September 3, 2010
- Flood, August 13, 2010
- Flash Flood, July 23, 2010
- Tornado, June 21, 2010
Earlier years, state by state:
More
Tornadoes in Winnebago CountyEvery warning in Winnebago 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.