Mercer County, Ohio tornadoes

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29confirmed tornadoes since NOAA records began in 1950 (the first here in 1965). Most recent: May 7, 2024, EF2. 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 Mercer County

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The record

At a glance

Total291950 to 2025
Per year0.4average since 1950
Peak monthMay7 of 29
StrongestF4Apr 11, 1965
Deaths5whole paths, see note
Injuries147whole paths, see note

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

Seasons

When tornadoes hit here

By month

70 Jan: 0Feb: 0Mar: 5Apr: 2May: 7Jun: 7Jul: 4Aug: 1Sep: 0Oct: 0Nov: 3Dec: 0JanFebMarAprMayJunJulAugSepOctNovDec

May is the peak month, with 7 of 29 tornadoes.

By time of day

50 12 AM: 0: 0: 03 AM: 0: 0: 06 AM: 0: 0: 09 AM: 1: 0: 012 PM: 1: 2: 23 PM: 2: 3: 56 PM: 3: 3: 29 PM: 3: 2: 012 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM

Most often around 5:00 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: 0: 01960: 0: 0: 0: 0: 0: 2: 0: 0: 0: 01970: 0: 0: 0: 2: 0: 0: 1: 0: 0: 01980: 1: 0: 0: 0: 0: 0: 1: 0: 0: 11990: 1: 0: 2: 0: 1: 0: 0: 0: 0: 02000: 0: 0: 0: 0: 0: 0: 2: 0: 0: 12010: 0: 2: 0: 1: 0: 0: 0: 3: 0: 12020: 0: 1: 0: 1: 5: 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
10
EF1
9
EF2
7
EF3
1
EF4
1
Unknown
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, April 11, 1965

4 deaths, 125 injuries Strongest

F4, April 11, 1965

52.5 mile path Longest path

52.5 miles, F4

April 11, 1965, whole path Widest

1,050 yards, EF1

March 14, 2024
Every tornado

All 29 tornadoes, newest first

DateRatingPath lengthWidthDeathsInjuries
May 7, 2024EF26.4 mi300 yd00
May 7, 2024EF28.14 mi400 yd00
May 4, 2024EFU0.6 mi30 yd00
Mar 14, 2024EF115.95 mi1,050 yd00
Mar 14, 2024EF19.34 mi450 yd00
Mar 31, 2023EF08.36 mi200 yd00
Jun 18, 2021EF25.6 mi200 yd00
May 27, 2019EF310.84 mi250 yd18
Nov 5, 2017EF25.41 mi200 yd08
Nov 5, 2017EF238.72 mi600 yd01
Jul 10, 2017EF06.35 mi150 yd00
Jun 12, 2013EF00.06 mi100 yd00
May 26, 2011EF00.07 mi10 yd00
Apr 19, 2011EF23.68 mi30 yd00
May 27, 2009EF00.52 mi20 yd00
Aug 28, 2006F00.8 mi60 yd00
Jun 22, 2006F00.2 mi30 yd00
Jun 28, 1994F12.6 mi40 yd00
Jul 12, 1992F10.1 mi73 yd00
Jul 12, 1992F23 mi73 yd00
Jul 24, 1990F00.5 mi23 yd00
May 25, 1989F15 mi50 yd00
Mar 10, 1986F114 mi73 yd00
Jun 1, 1980F11 mi150 yd04
Mar 20, 1976F13.8 mi50 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 13, 2026.