Storm History: Sioux County, North Dakota
Every storm the National Weather Service has filed in Sioux County, North Dakota: 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
- 207
- Deaths
- 2
- Injuries
- 8
- Damage
- $8.1 million
- Episodes
- 145
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 | 97 | 0 | 0 | $793,000 |
| Tornado | 59 | 2 | 2 | $921,000 |
| Thunderstorm Wind | 29 | 0 | 4 | $1.4 million |
| Flash Flood | 15 | 0 | 2 | $4.3 million |
| Flood | 5 | 0 | 0 | $680,000 |
| Wildfire | 1 | 0 | 0 | |
| Funnel Cloud | 1 | 0 | 0 |
The deadliest
The costliest
Damage within this county, in the dollars of its year.
- Flash Flood, July 13, 2010
- Thunderstorm Wind, May 16, 1996
- Tornado, July 8, 2019
- Hail, July 4, 1994
- Flash Flood, May 25, 2013
- Thunderstorm Wind, June 21, 2023
- Flood, March 6, 2009
- Flood, June 2, 2011
- Hail, July 25, 2020
- Flood, April 1, 2009
- Thunderstorm Wind, June 30, 2006
- Tornado, July 9, 2007
- Flash Flood, June 7, 2005
- Thunderstorm Wind, May 16, 1996
- Thunderstorm Wind, June 3, 1999
- Flash Flood, June 7, 2005
- Thunderstorm Wind, August 4, 2006
- Hail, July 9, 2016
- Thunderstorm Wind, August 4, 2006
- Tornado, May 24, 2010
The largest hail
The largest stone in each episode, which may have fallen in a neighboring county of the same episode.
- Flash Flood, July 13, 2010
- Hail, July 29, 2024
- Hail, July 4, 1994
- Hail, July 7, 1990
- Hail, July 10, 2016
- Hail, August 24, 2006
- Tornado, June 7, 2021
- Hail, July 21, 2014
- Flash Flood, May 25, 2013
- Hail, July 2, 2019
- Hail, July 9, 2016
- Flash Flood, July 31, 2011
- Tornado, July 4, 1977
- Hail, August 7, 2025
- Hail, May 19, 2024
The strongest tornadoes
Every episode, newest first
- Tornado, September 12, 2025
- Hail, August 7, 2025
- Tornado, June 20, 2025
- Hail, June 15, 2025
- Tornado, August 28, 2024
- Hail, July 29, 2024
- Thunderstorm Wind, July 29, 2024
- Hail, June 3, 2024
- Hail, May 19, 2024
- Hail, September 4, 2023
- Tornado, August 1, 2023
- Hail, July 30, 2023
- Thunderstorm Wind, June 21, 2023
- Hail, June 29, 2022
- Thunderstorm Wind, August 19, 2021
- Tornado, June 7, 2021
- Hail, August 13, 2020
- Hail, July 25, 2020
- Hail, July 17, 2019
- Hail, July 16, 2019
- Tornado, July 8, 2019
- Hail, July 2, 2019
- Thunderstorm Wind, July 7, 2018
- Flash Flood, July 3, 2018
- Hail, July 2, 2018
- Tornado, May 31, 2018
- Hail, May 17, 2018
- Hail, May 15, 2018
- Hail, August 9, 2016
- Tornado, July 26, 2016
- Hail, July 22, 2016
- Hail, July 16, 2016
- Hail, July 10, 2016
- Hail, July 9, 2016
- Tornado, June 21, 2016
- Hail, May 25, 2016
- Hail, June 14, 2015
- Tornado, June 2, 2015
- Hail, July 21, 2014
- Tornado, June 18, 2014
- Hail, August 4, 2013
- Flash Flood, June 22, 2013
- Hail, June 21, 2013
- Flash Flood, May 25, 2013
- Hail, June 30, 2012
- Hail, August 18, 2011
- Flood, August 1, 2011
- Flash Flood, July 31, 2011
- Hail, July 18, 2011
- Tornado, July 10, 2011
- Flood, July 1, 2011
- Flood, June 2, 2011
- Hail, June 2, 2011
- Tornado, August 12, 2010
- Hail, July 31, 2010
- Flash Flood, July 13, 2010
- Hail, June 21, 2010
- Tornado, May 24, 2010
- Hail, June 27, 2009
- Tornado, June 16, 2009
- Flood, April 1, 2009
- Flood, March 6, 2009
- Hail, August 26, 2008
- Tornado, July 10, 2008
- Hail, June 26, 2008
- Hail, June 24, 2008
- Tornado, June 18, 2008
- Hail, June 11, 2008
- Hail, August 27, 2007
- Tornado, August 10, 2007
- Tornado, July 9, 2007
- Hail, July 1, 2007
- Hail, June 10, 2007
- Hail, June 6, 2007
- Tornado, May 25, 2007
- Funnel Cloud, August 24, 2006
- Hail, August 24, 2006
- Hail, August 24, 2006
- Tornado, August 10, 2006
- Hail, August 10, 2006
- Thunderstorm Wind, August 4, 2006
- Thunderstorm Wind, August 4, 2006
- Thunderstorm Wind, July 26, 2006
- Thunderstorm Wind, July 26, 2006
- Thunderstorm Wind, June 30, 2006
- Thunderstorm Wind, June 30, 2006
- Hail, May 26, 2006
- Thunderstorm Wind, July 2, 2005
- Tornado, June 26, 2005
- Tornado, June 26, 2005
- Flash Flood, June 7, 2005
- Flash Flood, June 7, 2005
- Hail, June 7, 2005
- Hail, June 7, 2005
- Flash Flood, June 7, 2005
- Thunderstorm Wind, June 1, 2005
- Hail, August 1, 2004
- Hail, July 13, 2003
- Hail, July 3, 2003
- Hail, August 31, 2002
- Hail, August 26, 2002
- Hail, August 11, 2002
- Thunderstorm Wind, August 8, 2002
- Thunderstorm Wind, July 26, 2002
- Thunderstorm Wind, July 24, 2002
- Wildfire, July 5, 2002
- Thunderstorm Wind, July 30, 2001
- Hail, July 19, 2001
- Flash Flood, July 16, 2001
- Flash Flood, July 15, 2001
- Hail, July 3, 2001
- Hail, June 9, 2001
- Hail, June 9, 2001
- Thunderstorm Wind, June 25, 1999
- Tornado, June 25, 1999
- Tornado, June 6, 1999
- Thunderstorm Wind, June 3, 1999
- Hail, June 3, 1999
- Tornado, June 10, 1998
- Hail, May 4, 1997
- Hail, July 10, 1996
- Tornado, June 28, 1996
- Thunderstorm Wind, June 28, 1996
- Hail, May 31, 1996
- Thunderstorm Wind, May 16, 1996
- Thunderstorm Wind, May 16, 1996
- Hail, August 12, 1995
- Hail, July 4, 1994
- Hail, July 7, 1990
- Hail, July 19, 1987
- Tornado, June 27, 1986
- Tornado, May 11, 1986
- Hail, July 25, 1984
- Hail, June 27, 1984
- Thunderstorm Wind, August 15, 1983
- Tornado, June 21, 1983
- Thunderstorm Wind, July 12, 1981
- Hail, July 20, 1980
- Tornado, July 4, 1977
- Tornado, May 17, 1975
- Tornado, July 31, 1966
- Tornado, June 24, 1966
- Thunderstorm Wind, June 1, 1965
- Thunderstorm Wind, June 8, 1959
- Tornado, July 3, 1956
More
Tornadoes in Sioux CountyEvery warning in Sioux County since 1986Every county in North Dakota
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.