Hanson storm history
Storm events recorded in Hanson, South Dakota between 1950 and 2025.
549
Total events
18
Tornadoes
90
Hail
64
Floods
0
Deaths
$5.7M
Property damage
Most significant events
Strongest tornadoes, deadliest events, and biggest damage in this county. Up to 50 shown.
Tornado F3 Tornado
A large and strengthening tornado destroyed buildings and other property on five farms and also destroyed trees and power lines before crossing the eastern edge of Hanson County.
Thunderstorm winds caused widespread damage to homes, trailers, barns, other structures, trees, and vehicles at the Oak Lane Hutterite colony south of Alexandria. Three people were injured when their trailer home was flipped and damaged.
High Wind High Wind
Northwest winds were sustained between 40 and 46 mph at times, with gusts as high as 64 mph 4 miles east-northeast of Alexandria.
Winter Weather Winter Weather
Snowfall totaled 4.0 inches at Alexandria and 3.0 inches 6 miles northwest of Spencer.
Cold/Wind Chill Cold/Wind Chill
Wind chills reached as low as -30 degrees 4 miles east-northeast of Alexandria.
High Wind High Wind
Synoptic northwest winds were sustained from 40 to 47 mph with a peak gust of 64 mph at a South Dakota Road Weather Information System site 4 miles east-northeast of Alexandria.
Winter Weather Winter Weather
Snowfall totaled 5.0 inches 5.6 miles northwest of Spencer and 3.4 inches at Alexandria.
Winter Weather Winter Weather
A long-duration snowfall totaled 3.7 inches at Alexandria. During a brief break in snowfall during the evening of November 28, a period of light freezing rain and freezing drizzle resulted in up to a tenth of an inch ice accumulation.
High Wind High Wind
Sustained winds periodically reached from 40 to 42 mph at a South Dakota Road Weather Information System site 4 miles east-northeast of Alexandria.
Winter Weather Winter Weather
Snowfall totaled 3.4 inches at Alexandria.
Thunderstorm Wind Thunderstorm Wind
Large tree branches from 6 to 8 inches in diameter were broken by thunderstorm wind gusts.
Heat Heat
Heat index values peaked as high as 103 degrees 2 miles east-northeast of Alexandria.
Thunderstorm Wind Thunderstorm Wind
Thunderstorm wind gusts were measured by a Road Weather Information System sensor near Alexandria.
Thunderstorm Wind Thunderstorm Wind
Thunderstorm wind gusts were measured by a personal weather station.
Excessive Heat Excessive Heat
Dangerous heat index readings reached an afternoon peak on July 27 as high as 110 degrees near Alexandria.
Heat Heat
Heat index values peaked during the afternoon hours of July 22 as high as 100 degrees near Alexandria.
Excessive Heat Excessive Heat
Daily afternoon and evening heat indices ranged from 105 to 112 degrees with a maximum heat index of 112 degrees at the Road Weather Information System site near Alexandria on June 20.
Thunderstorm Wind Thunderstorm Wind
Drought Drought
Severe (D2) drought conditions improved to moderate (D1) early month.
High Wind High Wind
Sustained winds reached 40 to 45 mph at times with gusts up to 59 mph near Alexandria.
Winter Weather Winter Weather
Snowfall totaled 2.0 inches at Alexandria.
High Wind High Wind
Northwest winds gusted up to 58 mph near Alexandria.
Drought Drought
Severe (D2) drought conditions persisted through the month.
Strong Wind Strong Wind
Winds were sustained at 30 to 38 mph with a peak gust of 53 mph near Alexandria.
Extreme Cold/Wind Chill Extreme Cold/Wind Chill
The lowest wind chills ranged from 35 to 45 below zero with 45 below zero observed at the South Dakota Road Weather Information System site near Alexandria.
Extreme Cold/Wind Chill Extreme Cold/Wind Chill
The lowest wind chills ranged from 35 to 43 below zero with 43 below zero observed at the South Dakota Road Weather Information System site near Alexandria.
Winter Storm Winter Storm
Snowfall totaled 7.3 inches 10.8 miles south of Emery, 6.6 inches 4.5 miles west-southwest of Ethan, and 2.7 inches at Alexandria.
Drought Drought
Severe (D2) drought conditions persisted through the month.
Extreme Cold/Wind Chill Extreme Cold/Wind Chill
The lowest wind chills ranged from 35 to 43 below zero with 43 below zero observed at the South Dakota Road Weather Information System site near Alexandria.
Drought Drought
Severe (D2) drought conditions persisted through the month.
Strong Wind Strong Wind
Winds were sustained up to 40 mph at times with gusts as high as 57 mph near Alexandria.
Strong Wind Strong Wind
Winds were sustained at times to 30 to 35 mph with gusts as high as 47 mph near Alexandria.
Strong Wind Strong Wind
Winds were sustained from 30 to 40 mph with gusts as high as 56 mph near Alexandria.
Drought Drought
Severe (D2) drought persisted through December.
Strong Wind Strong Wind
Winds occasionally gusted as high as 54 mph near Alexandria.
Drought Drought
Severe (D2) drought persisted through November with precipitation varying from 100 to 200 percent of normal with a majority falling on a single day mid-month.
Drought Drought
Severe (D2) drought developed with precipitation around 5 inches below normal since August 1.
Excessive Heat Excessive Heat
Afternoon and early evening heat index values reached as high as 106 degrees near Alexandria.
Heat Heat
Two-day heat index readings peaked very briefly at 102 degrees at the South Dakota Road Weather Information System site near Alexandria.
Thunderstorm Wind Thunderstorm Wind
A thunderstorm wind gust up to 66 mph was measured by the South Dakota Road Weather Information System site near Alexandria.
Heat Heat
Heat index values reached 102 degrees near Alexandria.
Excessive Heat Excessive Heat
Daily afternoon and evening heat indices ranged from 100 to 105 degrees with a maximum heat index of 105 degrees at the South Dakota Road Weather Information System site near Alexandria on July 13.
Flood Flood
Flooding continued from June on the James River near Mitchell, with declining river levels. The river fell below flood stage on the evening of July 8th.
Flood Flood
The James River near Mitchell rose above flood stage the morning of June 21st, cresting around 6.72 feet above flood stage (23.72 feet) on June 23rd. This crest is in the Moderate Stage. The river stayed above flood stage into July. For a more comprehensive description of flood d…
Flood Flood
Rainfall amounts across Hanson County from June 20-22 ranged from 6 to 8 inches. Overland flooding ensued with additional major flooding along the James River. Several roads were closed and damaged due to flooding. Preliminary damage assessments estimate loss to public infrastruc…
Strong Wind Strong Wind
Strong synoptic winds gusted up to 53 mph near Alexandria.
High Wind High Wind
Sustained winds reached as high as 47 mph with a peak gust of 60 mph at the South Dakota Road Weather Information System site 4 miles east-northeast of Alexandria.
High Wind High Wind
Sustained winds intermittently peaked between 40 and 46 mph during the afternoon hours. A maximum wind gust of 61 mph was observed at the South Dakota Road Weather Information System site near Alexandria (SD 502).
Winter Storm Winter Storm
Snow developed early and was heavy at times, but changed to a period of mixed precipitation by midday on the 24th as temperatures warmed above freezing. Snow redeveloped by early on the 25th, concurrent with north winds which gusted as high as 48 mph near Alexandria to produce vi…
Strong Wind Strong Wind
Strong southerly winds reached a sustained 30 to 37 mph, with a peak gust up to 54 mph at the South Dakota Road Weather Information System site near Alexandria.
Events by year
| Year | Events | Tornadoes |
|---|---|---|
| 2025 | 28 | 0 |
| 2024 | 25 | 0 |
| 2023 | 26 | 0 |
| 2022 | 28 | 0 |
| 2021 | 16 | 0 |
| 2020 | 25 | 0 |
| 2019 | 30 | 0 |
| 2018 | 28 | 0 |
| 2017 | 8 | 0 |
| 2016 | 13 | 0 |
| 2015 | 14 | 0 |
| 2014 | 4 | 0 |
| 2013 | 7 | 0 |
| 2012 | 25 | 0 |
| 2011 | 17 | 0 |
| 2010 | 22 | 1 |
| 2009 | 20 | 2 |
| 2008 | 15 | 0 |
| 2007 | 25 | 5 |
| 2006 | 16 | 0 |
| 2005 | 18 | 0 |
| 2004 | 27 | 0 |
| 2003 | 15 | 0 |
| 2002 | 15 | 0 |
| 2001 | 8 | 0 |
| 2000 | 12 | 0 |
| 1999 | 9 | 0 |
| 1998 | 12 | 5 |
| 1997 | 8 | 0 |
| 1996 | 12 | 0 |
| 1993 | 1 | 0 |
| 1991 | 3 | 1 |
| 1987 | 1 | 0 |
| 1986 | 5 | 0 |
| 1985 | 2 | 1 |
| 1984 | 1 | 0 |
| 1983 | 1 | 0 |
| 1978 | 2 | 1 |
| 1968 | 1 | 0 |
| 1964 | 1 | 0 |
| 1960 | 1 | 1 |
| 1958 | 1 | 0 |
| 1954 | 1 | 1 |