Tornado History Map

Sully County, South Dakota tornado history

23 tornadoes recorded in or across Sully County from 1965 to 2021, coloured by rating on the map.

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Years1950 to 2025
Rating (F or EF scale)

Shows tornadoes that started in, or crossed, the chosen state. To see how many have passed near you, search a town or ZIP code, or tap the map.

Key
  • F0 / EF0 Light damage
  • F1 / EF1 Moderate damage
  • F2 / EF2 Considerable damage
  • F3 / EF3 Severe damage
  • F4 / EF4 Devastating damage
  • F5 / EF5 Incredible damage
  • Unknown Not rated (2007 onwards)

How to read the lines. Each line is one tornado, drawn from where it started to where it ended, coloured and sized by its rating. A dot means the record has no end point. Tap a line for its details, or tap anywhere else to see how many tornadoes have passed nearby. Weaker tornadoes appear as you zoom in. Ratings use the Fujita (F) scale before 1 February 2007 and the Enhanced Fujita (EF) scale from then on.

Tornadoes in Sully County

The Storm Prediction Center records 23 tornadoes whose paths touched Sully County, South Dakota between 1965 and 2021. None of them is recorded as having killed anyone. The busiest month is May, with 6 tornadoes. The strongest was an F2 on 1 October 1971. The most recent was on 13 October 2021.

  • 23tornadoes
  • 0deaths
  • 1injury
  • 228per 10,000 sq mi of land

A tornado that crossed several counties counts in each one, so county counts add up to more than the state's.

How strong were the tornadoes in Sully County?

RatingTornadoesShare
F0 / EF01878%
F1 / EF1417%
F2 / EF214%
F3 / EF300%
F4 / EF400%
F5 / EF500%
Unknown rating00%

Sully County tornadoes over time

Tornadoes by decade
Bar chart of tornadoes by period. The most is 8 in 1970s.1960s31970s81980s31990s42000s42020s1

The 2020s only run to 2021, so that bar is for a shorter period. The record starts in 1950.

Show the numbers
PeriodCount
1960s3
1970s8
1980s3
1990s4
2000s4
2020s1
Tornadoes by month
Bar chart of tornadoes by period. The most is 6 in May.Jan0Feb0Mar0Apr1May6Jun6Jul2Aug6Sep0Oct2Nov0Dec0
Show the numbers
PeriodCount
Jan0
Feb0
Mar0
Apr1
May6
Jun6
Jul2
Aug6
Sep0
Oct2
Nov0
Dec0

Records for Sully County

  • Strongest: South Dakota tornado1 October 1971, F2, 0.5 miles long
  • Longest path: South Dakota tornado24 August 2006, F1, 5 miles long
  • Most recent: South Dakota tornado13 October 2021, EF0, 0.2 miles long

Many of these tornadoes killed or injured people. The numbers are the official record's, and they may be revised.

More in South Dakota

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