Seneca County, Ohio tornadoes

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24confirmed tornadoes since NOAA records began in 1950 (the first here in 1960). Most recent: March 14, 2024, EFU. 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.

The record

At a glance

Total241950 to 2025
Per year0.3average since 1950
Peak monthMay5 of 24
StrongestF3May 10, 1973
Deaths11whole paths, see note
Injuries138whole paths, see note

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

Seasons

When tornadoes hit here

By month

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

May is the peak month, with 5 of 24 tornadoes.

By time of day

60 12 AM: 1: 0: 03 AM: 0: 0: 06 AM: 0: 0: 09 AM: 0: 0: 012 PM: 1: 0: 03 PM: 6: 5: 46 PM: 2: 2: 09 PM: 2: 0: 112 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM

Most often around 3:00 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: 1: 1: 0: 0: 1: 2: 0: 0: 0: 01970: 0: 1: 0: 2: 1: 1: 0: 0: 0: 01980: 0: 1: 0: 0: 0: 0: 0: 0: 0: 11990: 0: 2: 1: 0: 0: 0: 0: 0: 0: 02000: 0: 0: 2: 0: 0: 0: 0: 1: 1: 02010: 0: 0: 0: 2: 0: 0: 0: 2: 0: 02020: 0: 0: 0: 0: 1: 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
6
EF1
8
EF2
6
EF3
3
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

F3, May 10, 1973

6 deaths, 100 injuries Strongest

F3, May 10, 1973

50.1 mile path Longest path

50.1 miles, F3

May 10, 1973, whole path Widest

500 yards, F2

November 16, 1965
Every tornado

All 24 tornadoes, newest first

DateRatingPath lengthWidthDeathsInjuries
Mar 14, 2024EFU1.29 mi50 yd00
Nov 5, 2017EF10.44 mi180 yd00
Nov 5, 2017EF20.61 mi150 yd00
Jul 10, 2013EF010.15 mi50 yd00
Jul 8, 2013EF00.05 mi15 yd00
May 30, 2008EF28.31 mi100 yd06
Aug 5, 2007EF00.75 mi10 yd00
Nov 10, 2002F321 mi100 yd12
Nov 10, 2002F29 mi50 yd00
Jul 13, 1992F216 mi100 yd00
Jun 15, 1991F00.2 mi20 yd00
May 30, 1991F122 mi100 yd00
Jun 14, 1989F00.5 mi50 yd00
Apr 17, 1981F10.3 mi37 yd00
Sep 5, 1975F110.2 mi10 yd00
May 11, 1974F10.5 mi30 yd00
Jun 26, 1973F00.5 mi33 yd00
May 10, 1973F350.1 mi27 yd6100
Sep 11, 1971F10.1 mi10 yd00
Nov 16, 1965F25.9 mi500 yd00
Apr 11, 1965F315 mi300 yd430
May 19, 1964F10.1 mi10 yd00
Feb 18, 1961F21.5 mi440 yd00
Jun 13, 1960F10.1 mi100 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 12, 2026.