Lyon County, Kansas tornadoes

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50confirmed tornadoes since NOAA records began in 1950 (the first here in 1953). Most recent: June 28, 2024, EFU. 2026 so far: 1 preliminary report 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 Lyon County

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The record

At a glance

Total501950 to 2025
Per year0.7average since 1950
Peak monthMay20 of 50
StrongestF4Jun 8, 1974
Deaths7whole paths, see note
Injuries203whole paths, see note

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

Seasons

When tornadoes hit here

By month

200 Jan: 0Feb: 0Mar: 4Apr: 9May: 20Jun: 12Jul: 2Aug: 2Sep: 0Oct: 0Nov: 1Dec: 0JanFebMarAprMayJunJulAugSepOctNovDec

May is the peak month, with 20 of 50 tornadoes.

By time of day

150 12 AM: 0: 0: 23 AM: 0: 1: 06 AM: 0: 0: 09 AM: 0: 0: 012 PM: 2: 1: 23 PM: 0: 5: 56 PM: 15: 9: 39 PM: 2: 1: 212 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM

Most often around 6:00 PM. Times as recorded by NOAA, mostly Central Standard Time.

By year, 1950 to 2025

60 1950: 0: 0: 0: 1: 4: 0: 1: 1: 3: 11960: 0: 0: 4: 0: 6: 0: 0: 0: 0: 01970: 0: 1: 0: 2: 1: 0: 0: 0: 0: 01980: 0: 0: 1: 0: 0: 2: 0: 1: 0: 11990: 2: 0: 0: 1: 0: 1: 0: 0: 1: 02000: 2: 0: 0: 0: 0: 1: 0: 0: 1: 02010: 0: 2: 2: 1: 0: 1: 0: 1: 1: 02020: 2: 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. This year so far: 1 preliminary reports.

By rating

EF0
22
EF1
14
EF2
8
EF3
3
EF4
1
Unknown
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, June 8, 1974

6 deaths, 177 injuries Strongest

F4, June 8, 1974

37.5 mile path Longest path

127 miles, F3

April 2, 1956, whole path Widest

1,760 yards, F4

June 8, 1974
Every tornado

All 50 tornadoes, newest first

DateRatingPath lengthWidthDeathsInjuries
Jun 28, 2024EFU2.37 mi30 yd00
May 14, 2020EF01.6 mi50 yd00
May 14, 2020EFU2.66 mi25 yd00
May 2, 2018EF00.01 mi20 yd00
May 19, 2017EF00.01 mi25 yd00
May 16, 2015EF10.18 mi50 yd00
May 19, 2013EF19 mi75 yd00
Apr 14, 2012EF00.1 mi25 yd00
Mar 28, 2012EF00.09 mi50 yd00
May 21, 2011EF310.11 mi700 yd15
May 21, 2011EF16.05 mi150 yd00
Jun 12, 2008EF00.1 mi25 yd00
Nov 27, 2005F01 mi100 yd00
May 26, 2000F18 mi50 yd00
May 1, 2000F03 mi10 yd00
Jun 10, 1998F00.1 mi30 yd00
Jun 7, 1995F12 mi80 yd00
Jul 2, 1993F00.3 mi23 yd00
Jun 8, 1990F00.1 mi10 yd00
Jun 7, 1990F210 mi100 yd017
May 18, 1989F10.5 mi30 yd00
May 18, 1987F10.5 mi50 yd00
Aug 17, 1985F00.2 mi10 yd00
Aug 17, 1985F00.1 mi10 yd00
May 28, 1982F018 mi17 yd00
This year

2026 preliminary reports not yet confirmed

Report dateLocationRating
Apr 23, 20266 S AllenNot 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.

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.