Storm History: Union County, Iowa
Every storm the National Weather Service has filed in Union 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
- 570
- Deaths
- 0
- Injuries
- 9
- Damage
- $187 million
- Episodes
- 374
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 | 187 | 0 | 8 | $42 million |
| Hail | 90 | 0 | 0 | $1.1 million |
| Flash Flood | 82 | 0 | 0 | $2.1 million |
| Drought | 27 | 0 | 0 | $110 million |
| Thunderstorm Wind | 24 | 0 | 1 | $282,000 |
| High Wind | 24 | 0 | 0 | $945,000 |
| Winter Storm | 24 | 0 | 0 | $515,000 |
| Heavy Snow | 20 | 0 | 0 | $3.6 million |
| Flood | 19 | 0 | 0 | $21 million |
| Blizzard | 17 | 0 | 0 | $450,000 |
| Ice Storm | 15 | 0 | 0 | $445,000 |
| Heavy Rain | 10 | 0 | 0 | |
| Frost/Freeze | 8 | 0 | 0 | $4.0 million |
| Extreme Cold/Wind Chill | 8 | 0 | 0 | |
| Cold/Wind Chill | 7 | 0 | 0 | $294,000 |
| Excessive Heat | 3 | 0 | 0 | $135,000 |
| Funnel Cloud | 2 | 0 | 0 | |
| Lightning | 1 | 0 | 0 | $50,000 |
| Heat | 1 | 0 | 0 | |
| Winter Weather | 1 | 0 | 0 |
The deadliest
None recorded.
The costliest
Damage within this county, in the dollars of its year.
- Drought, July 1, 2012
- Tornado, May 24, 1989
- Drought, August 1, 2013
- Flood, June 12, 2010
- Drought, August 1, 2003
- Drought, August 1, 2001
- Drought, August 1, 2012
- Tornado, April 14, 2012
- Drought, September 1, 2000
- Drought, August 14, 2000
- Drought, July 20, 1999
- Heavy Snow, October 26, 1997
- Tornado, May 27, 1995
- Tornado, March 29, 1979
- Frost/Freeze, October 10, 2009
- Tornado, April 8, 1999
- Frost/Freeze, April 11, 2012
- Tornado, May 6, 2007
- Tornado, April 26, 2024
- Hail, August 9, 2009
The largest hail
The largest stone in each episode, which may have fallen in a neighboring county of the same episode.
- Hail, June 18, 2021
- Flash Flood, September 18, 2010
- Hail, August 9, 2009
- Flash Flood, May 13, 2001
- Hail, May 7, 2023
- Hail, June 15, 2017
- Hail, April 12, 2014
- Flash Flood, June 3, 2014
- Hail, June 27, 2008
- Hail, May 17, 2004
- Hail, October 22, 2001
- Flash Flood, May 20, 2024
- Hail, July 14, 2020
- Flash Flood, June 25, 2019
- Hail, May 1, 2018
The strongest tornadoes
- Tornado, May 25, 2008
- Tornado, April 12, 1964
- Tornado, March 29, 1979
- Tornado, May 24, 1989
- Tornado, May 27, 1995
- Tornado, April 8, 1999
- Tornado, March 5, 2022
- Tornado, May 21, 2024
- Tornado, April 23, 1961
- Tornado, May 7, 1962
- Tornado, May 8, 1988
- Tornado, April 14, 1994
- Tornado, April 11, 2001
- Tornado, May 29, 1956
- Tornado, April 26, 1964
Every episode, newest first
- Flash Flood, September 16, 2025
- Thunderstorm Wind, July 7, 2025
- Thunderstorm Wind, June 23, 2025
- Tornado, April 17, 2025
- Blizzard, March 4, 2025
- Winter Storm, February 11, 2025
- Extreme Cold/Wind Chill, January 20, 2025
- Drought, November 1, 2024
- Drought, October 29, 2024
- Hail, September 19, 2024
- Tornado, June 25, 2024
- Tornado, May 21, 2024
- Flash Flood, May 20, 2024
- Tornado, April 30, 2024
- Tornado, April 26, 2024
- Drought, April 1, 2024
- Drought, March 1, 2024
- Drought, February 1, 2024
- Extreme Cold/Wind Chill, January 13, 2024
- Blizzard, January 11, 2024
- Winter Storm, January 8, 2024
- Drought, January 1, 2024
- Drought, December 1, 2023
- Drought, November 1, 2023
- Drought, October 1, 2023
- Drought, September 12, 2023
- Hail, July 17, 2023
- Tornado, July 12, 2023
- Thunderstorm Wind, June 29, 2023
- Hail, June 17, 2023
- Hail, May 7, 2023
- Winter Storm, February 15, 2023
- Blizzard, December 22, 2022
- Heavy Rain, November 4, 2022
- Drought, November 1, 2022
- Drought, October 1, 2022
- Hail, September 17, 2022
- Drought, September 1, 2022
- Drought, August 9, 2022
- Hail, June 7, 2022
- Tornado, April 23, 2022
- Tornado, March 5, 2022
- Winter Storm, January 14, 2022
- Winter Storm, January 1, 2022
- Tornado, December 15, 2021
- Heavy Rain, October 23, 2021
- Tornado, June 20, 2021
- Hail, June 18, 2021
- Cold/Wind Chill, February 13, 2021
- Heavy Snow, January 25, 2021
- Blizzard, January 15, 2021
- Winter Storm, December 29, 2020
- Hail, July 14, 2020
- Winter Storm, April 16, 2020
- Extreme Cold/Wind Chill, February 12, 2020
- Frost/Freeze, October 11, 2019
- Tornado, September 21, 2019
- Heavy Rain, July 28, 2019
- Excessive Heat, July 17, 2019
- Flash Flood, July 3, 2019
- Flash Flood, June 25, 2019
- Flash Flood, June 22, 2019
- Hail, May 27, 2019
- Winter Storm, February 16, 2019
- Extreme Cold/Wind Chill, January 29, 2019
- Winter Storm, January 11, 2019
- Blizzard, November 25, 2018
- Frost/Freeze, October 15, 2018
- Tornado, October 9, 2018
- Flood, October 5, 2018
- Tornado, September 4, 2018
- Flash Flood, September 1, 2018
- Flash Flood, September 1, 2018
- Heavy Rain, August 19, 2018
- Flash Flood, June 30, 2018
- Hail, June 28, 2018
- Flood, June 10, 2018
- Hail, May 1, 2018
- Extreme Cold/Wind Chill, January 15, 2018
- Extreme Cold/Wind Chill, January 1, 2018
- Extreme Cold/Wind Chill, December 30, 2017
- High Wind, December 4, 2017
- Frost/Freeze, October 28, 2017
- Frost/Freeze, October 27, 2017
- Drought, October 1, 2017
- Drought, September 1, 2017
- Drought, August 1, 2017
- Tornado, June 28, 2017
- Hail, June 15, 2017
- Hail, May 17, 2017
- Ice Storm, January 15, 2017
- Frost/Freeze, October 13, 2016
- Flash Flood, September 24, 2016
- Flash Flood, September 15, 2016
- Hail, August 11, 2016
- Flash Flood, August 1, 2016
- Excessive Heat, July 20, 2016
- Flash Flood, July 17, 2016
- Flash Flood, July 16, 2016
- Hail, May 13, 2016
- Tornado, April 27, 2016
- Winter Storm, December 28, 2015
- Heavy Rain, December 12, 2015
- Tornado, November 11, 2015
- Heavy Rain, August 17, 2015
- Tornado, August 2, 2015
- Flash Flood, July 28, 2015
- Flash Flood, July 27, 2015
- Flash Flood, July 10, 2015
- Hail, June 10, 2015
- Winter Storm, February 1, 2015
- Flood, October 1, 2014
- Flash Flood, September 9, 2014
- Flash Flood, August 23, 2014
- Heavy Rain, August 15, 2014
- Thunderstorm Wind, July 7, 2014
- Tornado, June 29, 2014
- Flash Flood, June 18, 2014
- Flash Flood, June 3, 2014
- Hail, April 12, 2014
- Hail, February 20, 2014
- Winter Storm, February 4, 2014
- High Wind, January 26, 2014
- High Wind, January 16, 2014
- Extreme Cold/Wind Chill, January 5, 2014
- Heavy Snow, December 21, 2013
- Drought, August 1, 2013
- Hail, July 2, 2013
- Flash Flood, May 28, 2013
- Hail, May 20, 2013
- Flash Flood, May 16, 2013
- Flash Flood, April 17, 2013
- Heavy Snow, February 26, 2013
- Heavy Snow, February 21, 2013
- Winter Storm, January 29, 2013
- Blizzard, December 20, 2012
- Winter Storm, December 19, 2012
- Drought, October 1, 2012
- Drought, September 1, 2012
- Drought, August 1, 2012
- Hail, July 14, 2012
- Drought, July 1, 2012
- Tornado, April 14, 2012
- Frost/Freeze, April 11, 2012
- Heavy Snow, February 4, 2012
- Heavy Snow, November 9, 2011
- Heavy Rain, August 16, 2011
- Hail, August 6, 2011
- Funnel Cloud, August 5, 2011
- Excessive Heat, July 15, 2011
- Tornado, June 26, 2011
- Flash Flood, June 25, 2011
- Tornado, June 19, 2011
- Flash Flood, June 13, 2011
- Hail, May 29, 2011
- Tornado, May 11, 2011
- Tornado, March 22, 2011
- Blizzard, February 1, 2011
- Blizzard, December 11, 2010
- Flash Flood, September 18, 2010
- Flash Flood, June 22, 2010
- Tornado, June 18, 2010
- Flood, June 12, 2010
- Flash Flood, June 4, 2010
- Tornado, June 1, 2010
- Flash Flood, May 25, 2010
- Heavy Snow, March 19, 2010
- Blizzard, January 25, 2010
- Ice Storm, January 20, 2010
- Winter Storm, December 24, 2009
- Blizzard, December 8, 2009
- Heavy Snow, December 7, 2009
- Frost/Freeze, October 10, 2009
- Hail, August 9, 2009
- Flash Flood, July 4, 2009
- Flash Flood, June 23, 2009
- Hail, April 24, 2009
- Heavy Snow, February 13, 2009
- Ice Storm, December 27, 2008
- Ice Storm, December 18, 2008
- High Wind, October 26, 2008
- Thunderstorm Wind, September 29, 2008
- Tornado, July 27, 2008
- Flash Flood, July 24, 2008
- Hail, June 27, 2008
- Hail, June 15, 2008
- Tornado, June 7, 2008
- Tornado, June 5, 2008
- Tornado, June 4, 2008
- Tornado, May 29, 2008
- Tornado, May 25, 2008
- Thunderstorm Wind, May 24, 2008
- Tornado, April 24, 2008
- Winter Storm, February 5, 2008
- Heavy Snow, January 16, 2008
- Ice Storm, December 10, 2007
- Ice Storm, December 1, 2007
- Flash Flood, September 6, 2007
- Flash Flood, August 23, 2007
- Flash Flood, August 20, 2007
- Thunderstorm Wind, August 12, 2007
- Flash Flood, August 7, 2007
- Hail, July 22, 2007
- Tornado, May 6, 2007
- Blizzard, March 1, 2007
- Winter Storm, February 24, 2007
- Winter Storm, February 12, 2007
- Heavy Snow, January 20, 2007
- Hail, September 16, 2006
- Thunderstorm Wind, July 26, 2006
- Hail, July 13, 2006
- Hail, June 18, 2006
- Hail, May 30, 2006
- Tornado, April 15, 2006
- Tornado, March 30, 2006
- High Wind, January 24, 2006
- High Wind, November 12, 2005
- Hail, June 29, 2005
- Hail, June 8, 2005
- High Wind, March 10, 2005
- Heavy Snow, January 4, 2005
- Ice Storm, January 3, 2005
- High Wind, October 30, 2004
- Tornado, August 26, 2004
- Thunderstorm Wind, June 12, 2004
- Tornado, May 24, 2004
- Flood, May 22, 2004
- Hail, May 17, 2004
- Tornado, May 8, 2004
- High Wind, April 27, 2004
- High Wind, April 18, 2004
- Heavy Snow, March 15, 2004
- Heavy Snow, February 5, 2004
- Heavy Snow, January 4, 2004
- High Wind, November 12, 2003
- Tornado, September 11, 2003
- Thunderstorm Wind, August 19, 2003
- Drought, August 1, 2003
- Hail, July 5, 2003
- Hail, May 4, 2003
- Winter Storm, February 14, 2003
- Winter Weather, January 28, 2003
- Hail, September 18, 2002
- Hail, August 16, 2002
- Thunderstorm Wind, July 10, 2002
- Tornado, June 26, 2002
- High Wind, April 18, 2002
- High Wind, March 9, 2002
- Hail, October 22, 2001
- Thunderstorm Wind, September 7, 2001
Earlier years, state by state:
More
Tornadoes in Union CountyEvery warning in Union 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.