Dearborn County, Indiana tornadoes

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17confirmed tornadoes since NOAA records began in 1950 (the first here in 1974). Most recent: May 16, 2025, EF1. 2026 so far: 2 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 Dearborn County

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The record

At a glance

Total171950 to 2025
Per year0.2average since 1950
Peak monthJune6 of 17
StrongestF4Apr 3, 1974
Deaths0whole paths, see note
Injuries144whole paths, see note

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

Seasons

When tornadoes hit here

By month

60 Jan: 0Feb: 0Mar: 0Apr: 4May: 2Jun: 6Jul: 1Aug: 2Sep: 0Oct: 2Nov: 0Dec: 0JanFebMarAprMayJunJulAugSepOctNovDec

June is the peak month, with 6 of 17 tornadoes.

By time of day

30 12 AM: 0: 0: 13 AM: 0: 0: 06 AM: 0: 0: 19 AM: 0: 1: 012 PM: 0: 0: 23 PM: 1: 3: 16 PM: 2: 2: 29 PM: 1: 0: 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

20 1950: 0: 0: 0: 0: 0: 0: 0: 0: 0: 01960: 0: 0: 0: 0: 0: 0: 0: 0: 0: 01970: 0: 0: 0: 0: 1: 0: 1: 0: 0: 01980: 0: 0: 0: 0: 0: 0: 0: 0: 0: 01990: 2: 1: 2: 0: 1: 0: 0: 1: 0: 12000: 0: 0: 0: 0: 0: 0: 0: 0: 1: 02010: 1: 1: 0: 0: 0: 0: 0: 1: 0: 02020: 1: 1: 0: 0: 0: 119501960197019801990200020102020

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: 2 preliminary reports.

By rating

EF0
12
EF1
2
EF2
1
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

Strongest

F4, April 3, 1974

27.1 mile path Longest path

33 miles, F4

June 2, 1990, whole path Widest

1,350 yards, F4

June 2, 1990
Every tornado

All 17 tornadoes, newest first

DateRatingPath lengthWidthDeathsInjuries
May 16, 2025EF16.33 mi250 yd00
Jun 18, 2021EF10.49 mi150 yd00
Apr 8, 2020EF00.96 mi150 yd00
Oct 7, 2017EF05.72 mi100 yd00
May 23, 2011EF03.08 mi50 yd00
Oct 26, 2010EF00.09 mi10 yd00
Jun 4, 2008EF00.71 mi50 yd00
Apr 9, 1999F01 mi50 yd00
Aug 17, 1997F00.5 mi100 yd00
Apr 15, 1994F00.1 mi20 yd00
Jul 30, 1992F01 mi70 yd00
Jun 18, 1992F02 mi167 yd00
Aug 19, 1991F00.1 mi10 yd00
Jun 2, 1990F433 mi1,350 yd037
Jun 2, 1990F223 mi440 yd03
Jun 24, 1976F00.1 mi10 yd00
Apr 3, 1974F427.1 mi1,133 yd0104
This year

2026 preliminary reports not yet confirmed

Report dateLocationRating
Aug 1, 20263 WSW Saint LeonNot yet rated
Jun 17, 20264 ESE DillsboroNot 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.