Hanson County, South Dakota tornadoes

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21confirmed tornadoes since NOAA records began in 1950 (the first here in 1954). Most recent: August 3, 2010, EF0. 2026 so far: 0 preliminary reports preliminary

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Map

Every tornado path in the county

Tornado paths, 1950 to 2025
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(E)F0(E)F1(E)F2(E)F3(E)F4(E)F5Unrated

Each path is a straight line from where the tornado started to where it ended, which is all most NOAA records hold. Tap a path for its details.

Recent warnings

Recent warnings in Hanson County

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The record

At a glance

Total211950 to 2025
Per year0.3average since 1950
Peak monthMay13 of 21
StrongestF4May 30, 1998
Deaths6whole paths, see note
Injuries152whole paths, see note

Deaths and injuries are NOAA's totals for each tornado's whole path, which can extend beyond Hanson County.

Seasons

When tornadoes hit here

By month

130 Jan: 0Feb: 0Mar: 0Apr: 0May: 13Jun: 5Jul: 0Aug: 3Sep: 0Oct: 0Nov: 0Dec: 0JanFebMarAprMayJunJulAugSepOctNovDec

May is the peak month, with 13 of 21 tornadoes.

By time of day

50 12 AM: 0: 0: 03 AM: 0: 0: 06 AM: 1: 0: 09 AM: 0: 0: 112 PM: 0: 1: 13 PM: 0: 4: 16 PM: 3: 5: 39 PM: 0: 0: 112 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM

Most often around 7:00 PM. Times as recorded by NOAA, mostly Central Standard Time.

By year, 1950 to 2025

50 1950: 0: 0: 0: 0: 1: 0: 0: 0: 0: 01960: 1: 0: 0: 0: 0: 0: 0: 0: 1: 11970: 0: 0: 0: 0: 0: 0: 0: 0: 1: 01980: 0: 0: 0: 0: 0: 1: 0: 0: 0: 01990: 0: 1: 0: 1: 0: 0: 0: 0: 5: 02000: 0: 0: 0: 0: 0: 0: 0: 5: 0: 22010: 1: 0: 0: 0: 0: 0: 0: 0: 0: 02020: 0: 0: 0: 0: 0: 019501960197019801990200020102020

The line is the five-year average. Tornadoes before about 1953 were under-reported, and better radar since the 1990s finds more weak ones.

By rating

EF0
7
EF1
8
EF2
4
EF3
1
EF4
1

Ratings before February 2007 use the original F scale; the numbers line up with today's EF scale. Unknown means NOAA could not assign a rating.

The record

Notable tornadoes

Deadliest

F4, May 30, 1998

6 deaths, 150 injuries Strongest

F4, May 30, 1998

14 mile path Longest path

34.3 miles, F2

August 8, 1969, whole path Widest

2,667 yards, F3

June 20, 1968
Every tornado

All 21 tornadoes, newest first

DateRatingPath lengthWidthDeathsInjuries
Aug 3, 2010EF00.86 mi50 yd00
Jun 24, 2009EF00.24 mi50 yd00
Jun 24, 2009EF00.12 mi50 yd00
May 5, 2007EF210.5 mi400 yd00
May 5, 2007EF10.5 mi100 yd00
May 5, 2007EF11.9 mi100 yd00
May 4, 2007EF00.2 mi50 yd00
May 4, 2007EF11 mi100 yd00
May 30, 1998F12 mi100 yd00
May 30, 1998F12 mi100 yd00
May 30, 1998F414 mi1,150 yd6150
May 30, 1998F26 mi200 yd00
May 30, 1998F12 mi200 yd00
Jun 7, 1993F112 mi73 yd00
May 12, 1991F00.1 mi50 yd00
May 11, 1985F015 mi10 yd00
Jun 24, 1978F00.1 mi10 yd00
Aug 8, 1969F234.3 mi10 yd01
Jun 20, 1968F39.9 mi2,667 yd00
Aug 18, 1960F10.1 mi10 yd00
May 27, 1954F22.3 mi100 yd01
Nearby

Nearby counties

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Source: NOAA Storm Prediction Center severe weather database, 1950 to 2025, and SPC preliminary reports for 2026. Page built October 13, 2026.