DeKalb County, Missouri tornadoes

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21confirmed tornadoes since NOAA records began in 1950 (the first here in 1957). Most recent: May 20, 2021, EF0. 2026 so far: 1 preliminary report 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 DeKalb County

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The record

At a glance

Total211950 to 2025
Per year0.3average since 1950
Peak monthMay11 of 21
StrongestF4May 29, 2004
Deaths3whole paths, see note
Injuries19whole paths, see note

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

Seasons

When tornadoes hit here

By month

110 Jan: 0Feb: 0Mar: 0Apr: 4May: 11Jun: 3Jul: 1Aug: 1Sep: 1Oct: 0Nov: 0Dec: 0JanFebMarAprMayJunJulAugSepOctNovDec

May is the peak month, with 11 of 21 tornadoes.

By time of day

80 12 AM: 0: 0: 03 AM: 0: 0: 06 AM: 0: 0: 09 AM: 0: 1: 012 PM: 0: 1: 03 PM: 1: 0: 46 PM: 1: 8: 19 PM: 4: 0: 012 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: 0: 0: 0: 1: 0: 01960: 1: 0: 0: 0: 2: 1: 0: 0: 0: 01970: 0: 1: 0: 0: 1: 0: 0: 0: 0: 01980: 0: 0: 1: 0: 0: 1: 0: 0: 0: 01990: 0: 0: 0: 1: 0: 0: 0: 0: 0: 02000: 0: 0: 0: 0: 5: 0: 2: 0: 0: 22010: 0: 0: 0: 0: 1: 0: 0: 0: 0: 02020: 0: 1: 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. This year so far: 1 preliminary reports.

By rating

EF0
9
EF1
5
EF2
6
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 29, 2004

3 deaths, 6 injuries Strongest

F4, May 29, 2004

22 mile path Longest path

55.4 miles, F2

May 18, 1971, whole path Widest

800 yards, F4

May 29, 2004
Every tornado

All 21 tornadoes, newest first

DateRatingPath lengthWidthDeathsInjuries
May 20, 2021EF00.88 mi50 yd00
Sep 9, 2014EF00.75 mi25 yd00
Jun 7, 2009EF00.1 mi25 yd00
Jun 7, 2009EF00.1 mi25 yd00
Apr 15, 2006F213 mi100 yd00
Apr 15, 2006F01.5 mi50 yd00
May 29, 2004F01 mi50 yd00
May 29, 2004F422 mi800 yd36
May 29, 2004F01 mi50 yd00
May 29, 2004F25 mi100 yd00
May 29, 2004F120 mi150 yd00
Jul 20, 1993F02 mi50 yd00
May 26, 1985F00.2 mi50 yd00
May 28, 1982F10.5 mi50 yd00
May 13, 1974F17.8 mi50 yd00
May 18, 1971F255.4 mi100 yd06
Apr 10, 1965F29.6 mi50 yd07
Aug 20, 1964F11.5 mi10 yd00
Apr 12, 1964F16.2 mi50 yd00
Jun 29, 1960F225.1 mi100 yd00
May 20, 1957F29.8 mi200 yd00
This year

2026 preliminary reports not yet confirmed

Report dateLocationRating
Jun 10, 20261 NNW WeatherbyNot yet rated

Preliminary reports from the Storm Prediction Center. One tornado can be reported more than once, and NOAA confirms the final record months later.

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.