Olmsted County, Minnesota tornadoes

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38confirmed tornadoes since NOAA records began in 1950 (the first here in 1953). Most recent: September 20, 2021, EF0. 2026 so far: 4 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 Olmsted County

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The record

At a glance

Total381950 to 2025
Per year0.5average since 1950
Peak monthJune17 of 38
StrongestF4May 10, 1953
Deaths2whole paths, see note
Injuries63whole paths, see note

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

Seasons

When tornadoes hit here

By month

170 Jan: 0Feb: 0Mar: 0Apr: 5May: 7Jun: 17Jul: 2Aug: 2Sep: 4Oct: 1Nov: 0Dec: 0JanFebMarAprMayJunJulAugSepOctNovDec

June is the peak month, with 17 of 38 tornadoes.

By time of day

80 12 AM: 0: 0: 03 AM: 1: 2: 16 AM: 0: 0: 09 AM: 0: 0: 012 PM: 0: 2: 33 PM: 5: 8: 56 PM: 3: 4: 39 PM: 0: 1: 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

60 1950: 0: 0: 0: 1: 0: 0: 1: 0: 0: 01960: 0: 0: 6: 0: 2: 0: 1: 1: 0: 01970: 0: 2: 0: 1: 2: 0: 0: 0: 0: 11980: 1: 3: 1: 0: 1: 0: 0: 0: 0: 01990: 0: 0: 0: 2: 0: 1: 0: 0: 2: 02000: 0: 1: 0: 0: 0: 0: 0: 0: 0: 02010: 2: 0: 0: 0: 0: 0: 0: 4: 0: 12020: 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: 4 preliminary reports.

By rating

EF0
19
EF1
10
EF2
7
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

Deadliest

F4, May 10, 1953

2 deaths, 24 injuries Strongest

F4, May 10, 1953

162 mile path Longest path

162 miles, F4

May 10, 1953, whole path Widest

300 yards, F0

April 29, 1981
Every tornado

All 38 tornadoes, newest first

DateRatingPath lengthWidthDeathsInjuries
Sep 20, 2021EF05.66 mi100 yd00
Jun 4, 2019EF11.25 mi75 yd00
Jul 19, 2017EF10.77 mi25 yd00
Jun 28, 2017EF00.48 mi25 yd00
Jun 28, 2017EF00.42 mi25 yd00
Jun 28, 2017EF00.01 mi25 yd00
Aug 13, 2010EF00.02 mi25 yd00
Jun 17, 2010EF12.38 mi150 yd00
May 1, 2001F00.2 mi50 yd00
Jun 24, 1998F00.2 mi50 yd00
May 15, 1998F18 mi80 yd00
Aug 13, 1995F03 mi20 yd00
Jun 8, 1993F00.1 mi10 yd00
Jun 8, 1993F00.1 mi10 yd00
Jun 7, 1984F11 mi50 yd00
May 17, 1982F24 mi10 yd00
Apr 29, 1981F00.8 mi300 yd00
Apr 29, 1981F00.5 mi90 yd00
Apr 29, 1981F20.1 mi100 yd02
Jun 5, 1980F11.9 mi100 yd00
Jul 3, 1979F20.5 mi100 yd00
Jun 18, 1974F10.3 mi27 yd02
Jun 9, 1974F10.1 mi10 yd00
Sep 26, 1973F12 mi50 yd01
Jun 7, 1971F00.1 mi50 yd00
This year

2026 preliminary reports not yet confirmed

Report dateLocationRating
Apr 17, 20262 E ViolaNot yet rated
Apr 17, 20264 N StewartvilleNot yet rated
Apr 17, 20264 NE RochesterNot yet rated
Apr 17, 20261 N StewartvilleNot 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.

Cities

Cities in Olmsted County

Each city page counts every tornado path within 10 miles of the city, including paths just over the county line.

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.