Harrison County, Missouri tornadoes

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27confirmed tornadoes since NOAA records began in 1950 (the first here in 1958). Most recent: June 28, 2017, EF1. 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 Harrison County

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The record

At a glance

Total271950 to 2025
Per year0.4average since 1950
Peak monthMay11 of 27
StrongestF4Jun 7, 1984
Deaths8whole paths, see note
Injuries81whole paths, see note

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

Seasons

When tornadoes hit here

By month

110 Jan: 0Feb: 0Mar: 1Apr: 4May: 11Jun: 7Jul: 0Aug: 0Sep: 2Oct: 1Nov: 1Dec: 0JanFebMarAprMayJunJulAugSepOctNovDec

May is the peak month, with 11 of 27 tornadoes.

By time of day

60 12 AM: 0: 2: 03 AM: 0: 0: 06 AM: 0: 0: 09 AM: 0: 0: 012 PM: 0: 1: 23 PM: 1: 2: 46 PM: 6: 4: 19 PM: 3: 1: 012 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM

Most often around 6:00 PM. Times as recorded by NOAA, mostly Central Standard Time.

By year, 1950 to 2025

50 1950: 0: 0: 0: 0: 0: 0: 0: 0: 2: 01960: 2: 1: 0: 0: 0: 2: 0: 1: 0: 01970: 1: 0: 0: 0: 0: 0: 0: 1: 0: 01980: 0: 0: 0: 0: 1: 0: 0: 0: 0: 21990: 0: 0: 0: 1: 0: 2: 0: 0: 0: 02000: 0: 0: 0: 2: 5: 1: 1: 0: 0: 02010: 0: 0: 0: 0: 1: 0: 0: 1: 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
11
EF1
8
EF2
3
EF3
3
EF4
2

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, June 7, 1984

3 deaths, 64 injuries Strongest

F4, June 7, 1984

134 mile path Longest path

134 miles, F4

June 7, 1984, whole path Widest

800 yards, F2

April 29, 1970
Every tornado

All 27 tornadoes, newest first

DateRatingPath lengthWidthDeathsInjuries
Jun 28, 2017EF116.37 mi75 yd00
Jun 30, 2014EF02.99 mi200 yd00
Mar 30, 2006F01 mi50 yd00
Jun 4, 2005F15 mi100 yd00
May 29, 2004F06 mi100 yd00
May 29, 2004F422 mi800 yd36
May 27, 2004F02 mi50 yd00
May 24, 2004F00.5 mi50 yd00
May 24, 2004F00.5 mi50 yd00
Apr 30, 2003F010 mi100 yd00
Apr 30, 2003F02 mi50 yd00
May 27, 1995F00.2 mi20 yd00
May 27, 1995F330.4 mi150 yd00
Jun 30, 1993F00.3 mi50 yd00
May 24, 1989F11 mi50 yd00
May 24, 1989F22.5 mi73 yd00
Jun 7, 1984F4134 mi250 yd364
May 21, 1977F11 mi100 yd00
Apr 29, 1970F229.3 mi800 yd00
Jun 12, 1967F10.1 mi50 yd00
Sep 20, 1965F10.2 mi10 yd00
Sep 18, 1965F01 mi20 yd00
Jun 7, 1961F10.5 mi17 yd00
May 16, 1960F10.2 mi10 yd00
Apr 16, 1960F327 mi300 yd04
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.