Clarke County, Iowa tornadoes

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21 confirmed tornadoes since NOAA records began in 1950 (the first here in 1964). Most recent: May 6, 2024, EF0. 2026 so far: 1 preliminary report preliminary

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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.

At a glance

Total211950 to 2025
Per year0.3average since 1950
Peak monthJune8 of 21
StrongestF3May 27, 1995
Deaths0whole paths, see note
Injuries0whole paths, see note

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

When tornadoes hit here

By month

80 Jan: 0Feb: 0Mar: 1Apr: 3May: 6Jun: 8Jul: 1Aug: 0Sep: 1Oct: 1Nov: 0Dec: 0JanFebMarAprMayJunJulAugSepOctNovDec

June is the peak month, with 8 of 21 tornadoes.

By time of day

50 12 AM: 0: 0: 03 AM: 1: 0: 06 AM: 0: 0: 09 AM: 0: 1: 012 PM: 0: 0: 03 PM: 1: 0: 26 PM: 3: 5: 29 PM: 1: 2: 312 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

40 1950: 0: 0: 0: 0: 0: 0: 0: 0: 0: 01960: 0: 0: 0: 0: 1: 1: 0: 1: 0: 01970: 0: 0: 0: 2: 0: 1: 0: 0: 0: 01980: 2: 1: 0: 0: 0: 0: 1: 0: 0: 01990: 0: 0: 0: 0: 0: 1: 0: 0: 0: 02000: 0: 1: 0: 0: 0: 0: 0: 0: 4: 02010: 0: 0: 0: 0: 1: 0: 0: 0: 1: 02020: 0: 0: 0: 0: 3: 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
3
EF1
9
EF2
7
EF3
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.

Notable tornadoes

Strongest

F3, May 27, 1995

30.4 mile path Longest path

76.5 miles, F3

April 11, 2001, whole path Widest

500 yards, F3

April 11, 2001

All 21 tornadoes, newest first

DateRatingPath lengthWidthDeathsInjuries
May 6, 2024EF02.01 mi80 yd00
May 6, 2024EF16.16 mi80 yd00
Apr 26, 2024EF25.84 mi75 yd00
Oct 8, 2018EF14.92 mi250 yd00
Mar 27, 2014EF00.73 mi75 yd00
Jun 5, 2008EF17.58 mi125 yd00
Jun 4, 2008EF110.92 mi100 yd00
May 30, 2008EF19.07 mi150 yd00
May 25, 2008EF16.84 mi50 yd00
Apr 11, 2001F376.5 mi500 yd00
May 27, 1995F330.4 mi150 yd00
Jul 13, 1986F21 mi50 yd00
Jun 7, 1981F10.1 mi30 yd00
Jun 14, 1980F19.3 mi30 yd00
Jun 14, 1980F19.3 mi30 yd00
May 7, 1975F210 mi10 yd00
Jun 16, 1973F01 mi50 yd00
Apr 19, 1973F22 mi400 yd00
Jun 9, 1967F27.8 mi300 yd00
Sep 20, 1965F23.3 mi150 yd00
Jun 22, 1964F212.8 mi400 yd00

2026 preliminary reports not yet confirmed

Report dateLocationRating
Apr 23, 20261 E WeldonNot 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 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.