Hancock County, Iowa tornadoes

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29confirmed tornadoes since NOAA records began in 1950 (the first here in 1951). Most recent: July 28, 2025, 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.

Recent warnings

Recent warnings in Hancock County

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The record

At a glance

Total291950 to 2025
Per year0.4average since 1950
Peak monthJune11 of 29
StrongestF4May 10, 1953
Deaths0whole paths, see note
Injuries11whole paths, see note

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

Seasons

When tornadoes hit here

By month

110 Jan: 0Feb: 0Mar: 0Apr: 4May: 5Jun: 11Jul: 4Aug: 1Sep: 3Oct: 0Nov: 0Dec: 1JanFebMarAprMayJunJulAugSepOctNovDec

June is the peak month, with 11 of 29 tornadoes.

By time of day

90 12 AM: 0: 0: 23 AM: 0: 0: 06 AM: 0: 0: 09 AM: 0: 0: 012 PM: 0: 2: 33 PM: 2: 2: 96 PM: 3: 2: 29 PM: 1: 1: 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

40 1950: 0: 1: 0: 1: 0: 0: 0: 1: 0: 01960: 0: 0: 0: 1: 0: 0: 0: 2: 0: 01970: 0: 0: 0: 2: 0: 0: 0: 0: 0: 01980: 2: 0: 1: 0: 3: 0: 0: 0: 0: 01990: 1: 0: 0: 0: 4: 0: 0: 1: 0: 22000: 0: 0: 1: 1: 1: 0: 0: 0: 0: 02010: 1: 0: 0: 0: 0: 0: 0: 0: 0: 02020: 0: 1: 1: 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.

By rating

EF0
10
EF1
7
EF2
9
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

Strongest

F4, May 10, 1953

26.6 mile path Longest path

32.8 miles, F2

April 21, 1967, whole path Widest

500 yards, F2

June 25, 1951
Every tornado

All 29 tornadoes, newest first

DateRatingPath lengthWidthDeathsInjuries
Jul 28, 2025EFU1.21 mi20 yd00
Apr 12, 2022EF01.65 mi100 yd00
Dec 15, 2021EF05.23 mi60 yd00
Jul 16, 2010EF00.37 mi40 yd00
May 1, 2004F03 mi50 yd00
Jul 14, 2003F00.2 mi30 yd00
Aug 26, 2002F00.1 mi20 yd00
Jun 8, 1999F00.2 min/a00
Jun 6, 1999F00.1 mi20 yd00
Jun 15, 1997F119.5 mi60 yd00
Jun 18, 1994F00.5 mi23 yd00
Jun 18, 1994F00.2 mi23 yd00
Jun 18, 1994F11 mi50 yd00
Jun 18, 1994F36 mi173 yd00
Apr 23, 1990F10.5 mi50 yd00
Jul 14, 1984F12 mi20 yd00
Jun 7, 1984F218 mi127 yd00
Jun 7, 1984F222 mi150 yd00
May 17, 1982F213 mi80 yd00
Sep 20, 1980F224.5 mi80 yd00
Jun 27, 1980F10.1 mi20 yd00
Sep 26, 1973F21 mi50 yd00
Sep 26, 1973F11 mi50 yd00
Apr 30, 1967F24.3 mi300 yd00
Apr 21, 1967F232.8 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 13, 2026.