Storm History: Johnson County, Iowa
Every storm the National Weather Service has filed in Johnson County, Iowa: 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
- 901
- Deaths
- 6
- Injuries
- 71
- Damage
- $386 million
- Episodes
- 528
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 | 255 | 1 | 51 | $71 million |
| Hail | 233 | 1 | 2 | $2.7 million |
| Flash Flood | 101 | 0 | 1 | $3.2 million |
| Winter Storm | 73 | 0 | 3 | |
| Thunderstorm Wind | 51 | 0 | 12 | $45 million |
| Winter Weather | 41 | 0 | 0 | $5,000 |
| Flood | 25 | 0 | 0 | $231 million |
| Heavy Snow | 23 | 0 | 1 | $15,000 |
| High Wind | 15 | 0 | 0 | $885,000 |
| Ice Storm | 15 | 0 | 0 | $1.0 million |
| Drought | 15 | 0 | 0 | $31 million |
| Blizzard | 13 | 0 | 0 | |
| Extreme Cold/Wind Chill | 11 | 2 | 0 | |
| Dense Fog | 9 | 0 | 0 | |
| Frost/Freeze | 6 | 0 | 0 | $248,000 |
| Cold/Wind Chill | 5 | 0 | 0 | |
| Heat | 4 | 0 | 0 | |
| Strong Wind | 1 | 0 | 0 | |
| Heavy Rain | 1 | 0 | 0 | |
| Excessive Heat | 1 | 0 | 0 | |
| Funnel Cloud | 1 | 0 | 0 | |
| Lightning | 1 | 0 | 1 | |
| Freezing Fog | 1 | 2 | 0 |
The deadliest
The costliest
Damage within this county, in the dollars of its year.
- Flood, June 1, 2008
- Thunderstorm Wind, June 29, 1998
- Tornado, May 18, 1997
- Drought, August 1, 2003
- Tornado, April 13, 2006
- Drought, July 1, 2005
- Drought, August 1, 2005
- Tornado, May 15, 1998
- Tornado, May 8, 1988
- Tornado, April 21, 1973
- Tornado, June 7, 1984
- Flash Flood, August 11, 2016
- Hail, June 7, 1994
- Ice Storm, February 24, 2007
- Tornado, June 21, 2007
- Hail, April 13, 2006
- Tornado, August 15, 1977
- High Wind, May 24, 1996
- Flood, May 9, 2003
- Flash Flood, June 12, 2008
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, May 15, 1968
- Tornado, June 7, 1984
- Tornado, May 24, 1989
- Tornado, March 31, 2023
- Tornado, May 7, 1962
- Tornado, September 20, 1965
- Tornado, May 18, 1971
- Tornado, May 31, 1971
- Tornado, June 20, 1974
- Tornado, November 9, 1975
- Tornado, September 16, 1978
- Tornado, May 8, 1988
- Tornado, March 22, 1991
- Tornado, May 15, 1998
- Tornado, May 25, 2008
Every episode, newest first
- Tornado, June 17, 2026
- Thunderstorm Wind, June 10, 2026
- Thunderstorm Wind, April 23, 2026
- Tornado, April 17, 2026
- Tornado, April 14, 2026
- Tornado, April 2, 2026
- Hail, March 31, 2026
- Hail, March 15, 2026
- Blizzard, March 15, 2026
- Tornado, March 10, 2026
- High Wind, February 18, 2026
- Winter Storm, November 28, 2025
- Flash Flood, August 15, 2025
- Thunderstorm Wind, July 29, 2025
- Tornado, July 10, 2025
- Hail, April 17, 2025
- Winter Storm, February 11, 2025
- Ice Storm, December 14, 2024
- Hail, October 24, 2024
- Tornado, July 15, 2024
- Flash Flood, July 10, 2024
- Flash Flood, July 2, 2024
- Tornado, June 25, 2024
- Tornado, May 24, 2024
- Hail, May 21, 2024
- Hail, May 19, 2024
- Hail, May 7, 2024
- Tornado, April 16, 2024
- Winter Storm, January 11, 2024
- Blizzard, January 8, 2024
- Hail, October 11, 2023
- Tornado, July 28, 2023
- Thunderstorm Wind, July 12, 2023
- Hail, June 4, 2023
- Hail, May 13, 2023
- Hail, May 7, 2023
- Tornado, May 6, 2023
- Hail, April 5, 2023
- Tornado, March 31, 2023
- Winter Storm, February 16, 2023
- Freezing Fog, January 10, 2023
- Blizzard, December 21, 2022
- Flash Flood, July 8, 2022
- Flash Flood, June 25, 2022
- Winter Storm, January 14, 2022
- Winter Storm, January 1, 2022
- Thunderstorm Wind, December 15, 2021
- High Wind, December 15, 2021
- Blizzard, February 4, 2021
- Winter Storm, January 30, 2021
- Winter Storm, January 25, 2021
- Winter Storm, January 1, 2021
- Winter Storm, December 29, 2020
- Tornado, August 10, 2020
- Hail, July 11, 2020
- Flash Flood, June 27, 2020
- Flash Flood, June 9, 2020
- Thunderstorm Wind, May 26, 2020
- Tornado, May 23, 2020
- Winter Storm, April 16, 2020
- Hail, April 7, 2020
- Winter Storm, January 17, 2020
- Winter Storm, January 10, 2020
- Winter Weather, December 9, 2019
- Winter Weather, November 10, 2019
- Winter Weather, October 30, 2019
- Tornado, August 18, 2019
- Tornado, May 29, 2019
- Flash Flood, May 28, 2019
- Tornado, May 24, 2019
- Flash Flood, May 16, 2019
- Winter Storm, February 16, 2019
- Winter Storm, February 11, 2019
- Ice Storm, February 7, 2019
- Extreme Cold/Wind Chill, January 29, 2019
- Winter Storm, January 22, 2019
- Winter Storm, January 18, 2019
- Winter Storm, January 11, 2019
- Blizzard, November 25, 2018
- Flood, October 7, 2018
- Flash Flood, October 5, 2018
- Tornado, August 28, 2018
- Tornado, June 9, 2018
- Hail, May 13, 2018
- Hail, May 2, 2018
- Winter Weather, April 8, 2018
- Heavy Snow, March 23, 2018
- Winter Storm, December 29, 2017
- Winter Weather, December 24, 2017
- Tornado, July 21, 2017
- Tornado, July 11, 2017
- Hail, June 15, 2017
- Tornado, May 17, 2017
- Hail, April 10, 2017
- Tornado, March 6, 2017
- Tornado, February 28, 2017
- Hail, February 23, 2017
- Flash Flood, August 11, 2016
- Thunderstorm Wind, July 6, 2016
- Flash Flood, June 22, 2016
- High Wind, February 19, 2016
- Blizzard, December 28, 2015
- Winter Storm, November 20, 2015
- Tornado, November 11, 2015
- Lightning, October 20, 2015
- Tornado, June 20, 2015
- Flash Flood, June 15, 2015
- Hail, April 7, 2015
- Winter Storm, February 25, 2015
- Winter Storm, February 1, 2015
- Winter Weather, January 8, 2015
- Winter Storm, January 5, 2015
- Winter Weather, November 15, 2014
- Hail, September 4, 2014
- Thunderstorm Wind, August 22, 2014
- Hail, August 4, 2014
- Hail, July 12, 2014
- Flood, July 1, 2014
- Hail, June 29, 2014
- Flash Flood, June 29, 2014
- Flood, June 23, 2014
- Flash Flood, June 16, 2014
- Hail, May 12, 2014
- Funnel Cloud, April 29, 2014
- Tornado, April 27, 2014
- Tornado, April 13, 2014
- Hail, April 12, 2014
- Winter Weather, March 1, 2014
- Flood, February 20, 2014
- Extreme Cold/Wind Chill, January 22, 2014
- Winter Weather, January 18, 2014
- Extreme Cold/Wind Chill, January 5, 2014
- Winter Storm, December 21, 2013
- Ice Storm, December 19, 2013
- Drought, October 1, 2013
- Hail, September 19, 2013
- Drought, September 3, 2013
- Heat, August 26, 2013
- Hail, July 19, 2013
- Tornado, June 24, 2013
- Flash Flood, June 24, 2013
- Tornado, May 30, 2013
- Hail, May 19, 2013
- Flash Flood, April 17, 2013
- Flood, April 17, 2013
- Winter Storm, March 4, 2013
- Winter Storm, February 26, 2013
- Winter Storm, February 21, 2013
- Winter Storm, January 29, 2013
- Winter Weather, January 27, 2013
- Blizzard, December 19, 2012
- Dense Fog, November 21, 2012
- Dense Fog, November 19, 2012
- Drought, November 1, 2012
- Hail, September 7, 2012
- Hail, September 5, 2012
- Hail, August 19, 2012
- Drought, August 7, 2012
- Flash Flood, August 4, 2012
- Hail, July 25, 2012
- Drought, July 10, 2012
- Excessive Heat, July 4, 2012
- Tornado, May 3, 2012
- Frost/Freeze, April 11, 2012
- Frost/Freeze, April 10, 2012
- Frost/Freeze, April 10, 2012
- Winter Weather, March 2, 2012
- Winter Weather, February 23, 2012
- Heavy Snow, January 20, 2012
- Winter Storm, January 11, 2012
- Hail, August 8, 2011
- Thunderstorm Wind, July 27, 2011
- Thunderstorm Wind, July 24, 2011
- High Wind, June 13, 2011
- Hail, June 9, 2011
- Hail, June 8, 2011
- Hail, May 29, 2011
- Hail, May 24, 2011
- Tornado, May 22, 2011
- Hail, April 3, 2011
- Winter Weather, February 27, 2011
- Blizzard, February 1, 2011
- Winter Weather, January 17, 2011
- Winter Storm, December 23, 2010
- Winter Weather, December 15, 2010
- Blizzard, December 11, 2010
- High Wind, October 27, 2010
- Flash Flood, August 20, 2010
- Flash Flood, August 13, 2010
- Flash Flood, August 4, 2010
- Flood, August 4, 2010
- Flash Flood, July 30, 2010
- Flash Flood, June 18, 2010
- Flash Flood, June 15, 2010
- Flood, June 15, 2010
- Hail, April 30, 2010
- Hail, April 6, 2010
- Hail, April 5, 2010
- Winter Weather, March 19, 2010
- Winter Storm, February 21, 2010
- Winter Weather, February 7, 2010
- Winter Weather, January 25, 2010
- Ice Storm, January 20, 2010
- Dense Fog, January 16, 2010
- Winter Storm, January 6, 2010
- Winter Weather, December 25, 2009
- Ice Storm, December 23, 2009
- Blizzard, December 9, 2009
- Winter Storm, December 7, 2009
- Flash Flood, August 27, 2009
- Hail, August 9, 2009
- Flash Flood, July 24, 2009
- Flash Flood, July 10, 2009
- Flash Flood, June 23, 2009
- Flood, June 22, 2009
- Flash Flood, June 21, 2009
- Winter Storm, March 28, 2009
- Winter Weather, February 13, 2009
- Extreme Cold/Wind Chill, January 14, 2009
- Heavy Snow, January 13, 2009
- Heavy Snow, January 9, 2009
- Dense Fog, December 26, 2008
- Winter Weather, December 24, 2008
- Blizzard, December 20, 2008
- Ice Storm, December 18, 2008
- Winter Weather, December 16, 2008
- Winter Weather, December 8, 2008
- Winter Weather, December 3, 2008
- Winter Weather, November 29, 2008
- High Wind, October 26, 2008
- Hail, July 21, 2008
- Hail, July 7, 2008
- Tornado, July 2, 2008
- Hail, June 14, 2008
- Flash Flood, June 12, 2008
- Flash Flood, June 8, 2008
- Flash Flood, June 3, 2008
- Flood, June 1, 2008
- Tornado, May 25, 2008
- Frost/Freeze, April 29, 2008
- Tornado, April 24, 2008
- Flood, April 1, 2008
- Winter Weather, February 28, 2008
- Winter Weather, February 25, 2008
- Winter Storm, February 16, 2008
- Winter Weather, February 11, 2008
- Winter Storm, February 5, 2008
- Dense Fog, February 4, 2008
- Winter Storm, February 3, 2008
- Blizzard, January 29, 2008
Earlier years, state by state:
More
Tornadoes in Johnson CountyEvery warning in Johnson County since 1986Every county in Iowa
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.