Winneshiek County, Iowa tornadoes

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24 confirmed tornadoes since NOAA records began in 1950 (the first here in 1957). Most recent: August 5, 2024, EF0. 2026 so far: 0 preliminary reports 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

Total241950 to 2025
Per year0.3average since 1950
Peak monthAugust7 of 24
StrongestF4May 5, 1965
Deaths0whole paths, see note
Injuries13whole paths, see note

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

When tornadoes hit here

By month

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

August is the peak month, with 7 of 24 tornadoes.

By time of day

40 12 AM: 0: 0: 03 AM: 0: 0: 06 AM: 3: 0: 09 AM: 0: 0: 012 PM: 0: 2: 13 PM: 3: 0: 36 PM: 1: 2: 49 PM: 4: 1: 012 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM

Most often around 8:00 PM. Times as recorded by NOAA, mostly Central Standard Time.

By year, 1950 to 2025

40 1950: 0: 0: 0: 0: 0: 0: 0: 1: 0: 01960: 0: 0: 0: 0: 0: 2: 0: 0: 0: 01970: 0: 0: 0: 1: 0: 0: 0: 0: 0: 41980: 0: 0: 0: 0: 1: 0: 0: 1: 1: 11990: 2: 0: 0: 0: 2: 0: 0: 0: 0: 02000: 0: 0: 1: 0: 0: 0: 0: 0: 0: 12010: 0: 0: 0: 0: 0: 0: 0: 2: 0: 12020: 0: 0: 1: 0: 2: 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
12
EF1
6
EF2
4
EF3
1
EF4
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.

Notable tornadoes

Strongest

F4, May 5, 1965

41.6 mile path Longest path

41.6 miles, F4

May 5, 1965, whole path Widest

300 yards, F0

April 19, 1957

All 24 tornadoes, newest first

DateRatingPath lengthWidthDeathsInjuries
Aug 5, 2024EF00.98 mi80 yd00
Aug 5, 2024EF00.33 mi30 yd00
Apr 12, 2022EF00.6 mi125 yd00
Sep 12, 2019EF02.82 mi150 yd00
May 17, 2017EF00.2 mi30 yd00
May 15, 2017EF00.98 mi50 yd00
Aug 19, 2009EF05.29 mi25 yd00
Jun 26, 2002F00.3 mi25 yd00
Jul 19, 1994F00.2 mi23 yd00
Jul 19, 1994F323 mi150 yd00
Jun 12, 1990F12 mi40 yd00
Jun 12, 1990F00.1 mi17 yd00
May 24, 1989F110 mi33 yd00
Mar 24, 1988F29 mi100 yd00
Jul 29, 1987F210 mi30 yd00
Jul 10, 1984F12 mi50 yd00
Aug 4, 1979F10.1 mi30 yd00
Aug 4, 1979F10.1 mi30 yd01
Aug 4, 1979F10.1 mi30 yd00
Jun 19, 1979F02 mi30 yd00
Jun 4, 1973F21 mi100 yd00
Aug 25, 1965F214.7 mi150 yd01
May 5, 1965F441.6 mi200 yd011
Apr 19, 1957F01 mi300 yd00

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.