Storm History: Story County, Iowa
Every storm the National Weather Service has filed in Story 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
- 1,320
- Deaths
- 1
- Injuries
- 34
- Damage
- $252 million
- Episodes
- 574
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 | 398 | 1 | 28 | $94 million |
| Hail | 348 | 0 | 1 | $4.0 million |
| Flash Flood | 220 | 0 | 0 | $7.9 million |
| Flood | 84 | 0 | 0 | $28 million |
| Thunderstorm Wind | 52 | 0 | 3 | $1.4 million |
| High Wind | 36 | 0 | 2 | $1.4 million |
| Winter Storm | 28 | 0 | 0 | $756,000 |
| Blizzard | 27 | 0 | 0 | $660,000 |
| Drought | 27 | 0 | 0 | $106 million |
| Heavy Snow | 25 | 0 | 0 | $3.5 million |
| Heavy Rain | 23 | 0 | 0 | |
| Ice Storm | 12 | 0 | 0 | $293,000 |
| Extreme Cold/Wind Chill | 11 | 0 | 0 | |
| Frost/Freeze | 9 | 0 | 0 | $4.0 million |
| Cold/Wind Chill | 7 | 0 | 0 | $294,000 |
| Funnel Cloud | 5 | 0 | 0 | |
| Winter Weather | 3 | 0 | 0 | |
| Excessive Heat | 3 | 0 | 0 | $135,000 |
| Heat | 1 | 0 | 0 | |
| Lightning | 1 | 0 | 0 | $5,000 |
The deadliest
The costliest
Damage within this county, in the dollars of its year.
- Tornado, August 10, 2010
- 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
- Drought, September 1, 2000
- Drought, August 14, 2000
- Heavy Snow, October 26, 1997
- Tornado, May 21, 2024
- Tornado, March 13, 1990
- Tornado, March 22, 1991
- Frost/Freeze, October 10, 2009
- Flood, August 9, 2010
- Flash Flood, June 16, 1996
- Flood, June 17, 1996
- Frost/Freeze, April 11, 2012
- Flash Flood, September 1, 2018
The largest hail
The largest stone in each episode, which may have fallen in a neighboring county of the same episode.
- Hail, July 25, 2000
- Flash Flood, June 23, 2015
- Flash Flood, June 25, 2008
- Flash Flood, May 13, 2001
- Hail, May 24, 2024
- Tornado, April 19, 2023
- Hail, May 7, 2023
- Hail, April 15, 2017
- Hail, April 12, 2014
- Hail, June 27, 2008
- Hail, June 18, 1980
- Hail, July 11, 2020
- Hail, June 8, 2011
- Hail, May 16, 1999
- Hail, May 25, 2018
The strongest tornadoes
- Tornado, June 13, 1976
- Tornado, August 26, 1965
- Tornado, June 8, 1967
- Tornado, June 18, 1974
- Tornado, July 28, 1986
- Tornado, May 24, 1989
- Tornado, March 13, 1990
- Tornado, April 8, 1999
- Tornado, May 21, 2024
- Tornado, May 20, 1953
- Tornado, June 15, 1950
- Tornado, May 7, 1962
- Tornado, May 13, 1974
- Tornado, August 28, 1979
- Tornado, March 22, 1991
Every episode, newest first
- Heavy Snow, February 19, 2026
- Hail, September 22, 2025
- Tornado, July 19, 2025
- Hail, June 19, 2025
- Funnel Cloud, May 28, 2025
- Hail, May 19, 2025
- Hail, April 28, 2025
- Hail, April 22, 2025
- Blizzard, March 19, 2025
- Hail, March 14, 2025
- Blizzard, March 4, 2025
- High Wind, February 28, 2025
- Extreme Cold/Wind Chill, January 20, 2025
- Winter Weather, January 2, 2025
- Hail, July 28, 2024
- Tornado, July 15, 2024
- Hail, July 6, 2024
- Thunderstorm Wind, June 18, 2024
- Hail, May 24, 2024
- Tornado, May 21, 2024
- Flash Flood, May 20, 2024
- Hail, May 8, 2024
- Tornado, April 30, 2024
- Hail, April 27, 2024
- Drought, March 1, 2024
- Drought, February 1, 2024
- Extreme Cold/Wind Chill, January 13, 2024
- Blizzard, January 11, 2024
- Winter Weather, January 10, 2024
- Winter Storm, January 8, 2024
- Drought, January 1, 2024
- Drought, December 1, 2023
- Tornado, October 13, 2023
- Drought, October 1, 2023
- Drought, September 12, 2023
- Tornado, July 12, 2023
- Hail, June 4, 2023
- Hail, May 7, 2023
- Tornado, April 19, 2023
- Tornado, March 31, 2023
- Ice Storm, February 22, 2023
- Winter Storm, February 15, 2023
- Blizzard, December 22, 2022
- Drought, November 1, 2022
- Drought, October 18, 2022
- Hail, August 27, 2022
- Hail, August 11, 2022
- Thunderstorm Wind, July 11, 2022
- Flood, June 15, 2022
- Flood, June 14, 2022
- Flood, June 5, 2022
- Thunderstorm Wind, May 14, 2022
- Hail, April 29, 2022
- Tornado, April 23, 2022
- Flash Flood, April 21, 2022
- High Wind, April 14, 2022
- High Wind, March 25, 2022
- Winter Storm, January 14, 2022
- Tornado, December 15, 2021
- Drought, November 1, 2021
- Drought, October 1, 2021
- Drought, September 1, 2021
- Hail, August 30, 2021
- Tornado, August 27, 2021
- Hail, August 24, 2021
- Drought, August 1, 2021
- Tornado, July 14, 2021
- Drought, July 1, 2021
- Funnel Cloud, June 25, 2021
- Drought, June 15, 2021
- High Wind, May 1, 2021
- Cold/Wind Chill, February 13, 2021
- Blizzard, February 4, 2021
- Heavy Snow, January 25, 2021
- Hail, October 22, 2020
- Drought, October 1, 2020
- Drought, September 1, 2020
- Tornado, August 10, 2020
- Drought, August 1, 2020
- Hail, July 14, 2020
- Drought, July 14, 2020
- Hail, July 11, 2020
- Extreme Cold/Wind Chill, February 12, 2020
- Blizzard, January 17, 2020
- Frost/Freeze, October 11, 2019
- Tornado, September 21, 2019
- Hail, September 14, 2019
- Tornado, September 9, 2019
- Tornado, August 19, 2019
- Excessive Heat, July 17, 2019
- Hail, July 17, 2019
- Tornado, July 15, 2019
- Flash Flood, July 3, 2019
- Flash Flood, July 2, 2019
- Flash Flood, June 21, 2019
- Tornado, June 15, 2019
- Tornado, May 29, 2019
- Flash Flood, May 23, 2019
- Frost/Freeze, April 28, 2019
- Flash Flood, March 13, 2019
- Flood, March 11, 2019
- Blizzard, February 23, 2019
- Winter Storm, February 16, 2019
- Winter Storm, February 11, 2019
- Extreme Cold/Wind Chill, January 29, 2019
- Winter Storm, January 22, 2019
- High Wind, October 20, 2018
- Frost/Freeze, October 15, 2018
- Flash Flood, September 1, 2018
- Flash Flood, September 1, 2018
- Flash Flood, September 1, 2018
- Funnel Cloud, August 16, 2018
- Hail, August 1, 2018
- Tornado, July 19, 2018
- Funnel Cloud, July 15, 2018
- Thunderstorm Wind, July 13, 2018
- Heavy Rain, July 4, 2018
- Flash Flood, July 1, 2018
- Flash Flood, June 30, 2018
- Tornado, June 20, 2018
- Flood, June 14, 2018
- Flash Flood, June 13, 2018
- Hail, June 6, 2018
- Tornado, May 29, 2018
- Tornado, May 28, 2018
- Hail, May 25, 2018
- Tornado, May 3, 2018
- Hail, May 1, 2018
- Hail, April 13, 2018
- Winter Storm, March 23, 2018
- Winter Storm, March 17, 2018
- Winter Storm, February 5, 2018
- Extreme Cold/Wind Chill, January 15, 2018
- Extreme Cold/Wind Chill, January 1, 2018
- Extreme Cold/Wind Chill, December 30, 2017
- Frost/Freeze, October 28, 2017
- Tornado, August 20, 2017
- Hail, August 14, 2017
- Hail, July 20, 2017
- Tornado, June 28, 2017
- Hail, June 19, 2017
- Tornado, June 16, 2017
- Hail, May 17, 2017
- Hail, May 16, 2017
- Hail, May 10, 2017
- Hail, April 19, 2017
- Hail, April 15, 2017
- Tornado, March 6, 2017
- Ice Storm, January 15, 2017
- Extreme Cold/Wind Chill, December 17, 2016
- Frost/Freeze, October 13, 2016
- Flash Flood, September 21, 2016
- Flash Flood, September 21, 2016
- Flash Flood, September 15, 2016
- Flash Flood, September 9, 2016
- Heavy Rain, September 7, 2016
- Flash Flood, August 29, 2016
- Flash Flood, August 19, 2016
- Hail, August 11, 2016
- Thunderstorm Wind, August 4, 2016
- Excessive Heat, July 20, 2016
- Flash Flood, July 17, 2016
- Hail, July 11, 2016
- Thunderstorm Wind, July 5, 2016
- Flash Flood, May 25, 2016
- High Wind, February 19, 2016
- Blizzard, February 2, 2016
- Winter Storm, December 28, 2015
- Winter Storm, December 24, 2015
- Flood, December 13, 2015
- Heavy Rain, December 12, 2015
- Winter Storm, November 20, 2015
- High Wind, November 11, 2015
- Tornado, November 11, 2015
- Flash Flood, September 6, 2015
- Flash Flood, August 27, 2015
- Hail, August 8, 2015
- Flash Flood, July 28, 2015
- Flash Flood, July 27, 2015
- Funnel Cloud, July 16, 2015
- Flash Flood, July 5, 2015
- Hail, June 23, 2015
- Flash Flood, June 23, 2015
- Flash Flood, June 10, 2015
- Tornado, June 6, 2015
- Hail, April 8, 2015
- Hail, April 8, 2015
- Winter Storm, February 1, 2015
- Extreme Cold/Wind Chill, January 6, 2015
- Heavy Snow, January 5, 2015
- Flood, September 1, 2014
- Tornado, August 31, 2014
- Heavy Rain, August 28, 2014
- Heavy Rain, August 6, 2014
- Flash Flood, July 12, 2014
- Tornado, June 30, 2014
- Flash Flood, June 26, 2014
- Flash Flood, June 18, 2014
- Flash Flood, May 20, 2014
- Hail, May 19, 2014
- Tornado, May 11, 2014
- Hail, April 12, 2014
- Blizzard, February 20, 2014
- Winter Storm, February 4, 2014
- Extreme Cold/Wind Chill, January 27, 2014
- High Wind, January 26, 2014
- Blizzard, January 16, 2014
- Extreme Cold/Wind Chill, January 5, 2014
- Hail, October 4, 2013
- Hail, September 19, 2013
- Drought, August 1, 2013
- Hail, July 22, 2013
- Flash Flood, June 24, 2013
- Flash Flood, June 23, 2013
- Flash Flood, May 29, 2013
- Flood, May 26, 2013
- Tornado, May 26, 2013
- Flash Flood, May 25, 2013
- Flash Flood, May 25, 2013
- Hail, May 20, 2013
- Tornado, May 19, 2013
- Heavy Snow, May 2, 2013
- Flash Flood, April 17, 2013
- Winter Storm, March 10, 2013
- Heavy Snow, February 26, 2013
- Winter Storm, January 29, 2013
- Ice Storm, January 27, 2013
- Blizzard, December 20, 2012
- Winter Storm, December 19, 2012
- Drought, October 1, 2012
- Drought, September 1, 2012
- Drought, August 1, 2012
- Hail, July 25, 2012
- Thunderstorm Wind, July 5, 2012
- Drought, July 1, 2012
- Flash Flood, May 6, 2012
- Hail, May 1, 2012
- Tornado, April 14, 2012
- Frost/Freeze, April 11, 2012
- High Wind, February 29, 2012
- High Wind, January 1, 2012
- Thunderstorm Wind, September 3, 2011
- Excessive Heat, July 15, 2011
- Tornado, July 11, 2011
- Tornado, June 26, 2011
- Tornado, June 20, 2011
- Flash Flood, June 13, 2011
- Hail, June 13, 2011
- Flash Flood, June 8, 2011
- Hail, June 8, 2011
Earlier years, state by state:
More
Tornadoes in Story CountyEvery warning in Story 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.