Ziebach County, South Dakota tornadoes

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24confirmed tornadoes since NOAA records began in 1950 (the first here in 1962). Most recent: June 21, 2015, EF0. 2026 so far: 0 preliminary reports preliminary

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Map

Every tornado path in the county

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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.

The record

At a glance

Total241950 to 2025
Per year0.3average since 1950
Peak monthJune12 of 24
StrongestF3Jun 21, 1983
Deaths0whole paths, see note
Injuries2whole paths, see note

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

Seasons

When tornadoes hit here

By month

120 Jan: 0Feb: 0Mar: 0Apr: 0May: 5Jun: 12Jul: 7Aug: 0Sep: 0Oct: 0Nov: 0Dec: 0JanFebMarAprMayJunJulAugSepOctNovDec

June is the peak month, with 12 of 24 tornadoes.

By time of day

90 12 AM: 0: 0: 03 AM: 0: 0: 06 AM: 0: 0: 09 AM: 0: 0: 012 PM: 0: 0: 03 PM: 0: 9: 66 PM: 4: 1: 39 PM: 0: 1: 012 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM

Most often around 4:00 PM. Times as recorded by NOAA, mostly Central Standard Time.

By year, 1950 to 2025

60 1950: 0: 0: 0: 0: 0: 0: 0: 0: 0: 01960: 0: 0: 1: 0: 0: 0: 1: 0: 0: 01970: 0: 0: 0: 0: 0: 0: 0: 2: 0: 01980: 0: 0: 1: 2: 0: 0: 0: 0: 0: 01990: 0: 0: 0: 0: 2: 0: 0: 0: 0: 02000: 0: 0: 0: 1: 0: 0: 0: 0: 5: 22010: 6: 0: 0: 0: 0: 1: 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
18
EF1
4
EF2
1
EF3
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

Strongest

F3, June 21, 1983

6 mile path Longest path

16 miles, F1

July 10, 1977, whole path Widest

800 yards, EF1

July 28, 2008
Every tornado

All 24 tornadoes, newest first

DateRatingPath lengthWidthDeathsInjuries
Jun 21, 2015EF01.64 mi10 yd00
Jun 16, 2010EF00.05 mi30 yd00
Jun 16, 2010EF00.05 mi30 yd00
Jun 16, 2010EF21.38 mi450 yd02
Jun 16, 2010EF12.26 mi450 yd00
Jun 16, 2010EF00.1 mi30 yd00
Jun 16, 2010EF00.01 mi20 yd00
May 12, 2009EF18.23 mi200 yd00
May 12, 2009EF00.05 mi20 yd00
Jul 28, 2008EF03.24 mi30 yd00
Jul 28, 2008EF111.21 mi800 yd00
May 24, 2008EF00.02 mi10 yd00
May 24, 2008EF00.02 mi10 yd00
May 24, 2008EF00.02 mi10 yd00
Jun 9, 2003F00.1 mi10 yd00
Jul 18, 1994F00.1 mi10 yd00
Jun 7, 1994F00.1 mi10 yd00
Jun 21, 1983F00.2 mi13 yd00
Jun 21, 1983F36 mi300 yd00
Jul 8, 1982F00.1 mi10 yd00
Jul 10, 1977F116 mi10 yd00
Jul 10, 1977F00.1 mi10 yd00
Jul 12, 1966F00.1 mi10 yd00
Jun 6, 1962F00.1 mi10 yd00
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 12, 2026.