Cass County, Illinois tornadoes

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20confirmed tornadoes since NOAA records began in 1950 (the first here in 1955). Most recent: June 18, 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.

The record

At a glance

Total201950 to 2025
Per year0.3average since 1950
Peak monthJune5 of 20
StrongestF2Jun 10, 1957
Deaths1whole paths, see note
Injuries7whole paths, see note

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

Seasons

When tornadoes hit here

By month

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

June is the peak month, with 5 of 20 tornadoes.

By time of day

50 12 AM: 0: 0: 13 AM: 0: 0: 06 AM: 0: 0: 09 AM: 0: 0: 212 PM: 0: 2: 23 PM: 5: 2: 06 PM: 2: 3: 09 PM: 0: 1: 012 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

60 1950: 0: 0: 0: 0: 0: 1: 0: 1: 0: 01960: 1: 0: 0: 0: 0: 0: 0: 0: 0: 01970: 0: 0: 0: 2: 0: 0: 0: 0: 0: 01980: 0: 0: 0: 0: 0: 0: 1: 0: 0: 01990: 0: 0: 0: 0: 0: 0: 0: 0: 1: 12000: 0: 0: 1: 0: 0: 0: 0: 0: 0: 02010: 0: 0: 0: 0: 1: 0: 0: 0: 2: 02020: 0: 6: 0: 0: 0: 219501960197019801990200020102020

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
5
EF1
6
EF2
4
Unknown
5

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

F1, April 8, 1999

1 deaths, 6 injuries Strongest

F2, June 10, 1957

42.3 mile path Longest path

42.3 miles, F2

June 10, 1957, whole path Widest

333 yards, F1

April 8, 1999
Every tornado

All 20 tornadoes, newest first

DateRatingPath lengthWidthDeathsInjuries
Jun 18, 2025EFU2.96 mi10 yd00
Jun 18, 2025EFU1.45 mi10 yd00
Dec 10, 2021EF212.75 mi200 yd00
Jul 10, 2021EFU0.07 mi10 yd00
Jul 10, 2021EF12.42 mi75 yd00
Jul 10, 2021EF03.2 mi75 yd00
May 3, 2021EFU1.48 mi100 yd00
May 3, 2021EFU0.5 mi50 yd00
Dec 1, 2018EF14.23 mi200 yd00
Dec 1, 2018EF00.64 mi50 yd00
Feb 20, 2014EF08.17 mi50 yd00
Apr 19, 2002F12 mi40 yd00
Apr 8, 1999F19.3 mi333 yd16
Apr 7, 1998F00.3 mi50 yd00
Jun 4, 1986F03 mi100 yd00
Aug 8, 1973F10.1 mi10 yd00
Jul 27, 1973F20.1 mi10 yd00
Jun 23, 1960F234.9 mi100 yd01
Jun 10, 1957F242.3 mi10 yd00
Dec 3, 1955F112.5 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.