Williamson County tornado history

23 tornadoes touched Williamson County, Illinois between 1950 and 2025 — about 0.3 a year. The strongest was rated F4 (Dec 18, 1957). Tornadoes here killed 21 and injured 407 people.

23tornadoes since 1950

F4strongest rating

21killed · 407 injured

28.3 milongest path · 1957

(E)F0(E)F1(E)F2(E)F3(E)F4(E)F5· dots = start point only

By rating

(E)F02

(E)F112

(E)F25

(E)F31

(E)F43

(E)F50

By month

JFMAMJJASOND

Peak month: April.

By decade

’50’60’70’80’90’00’10’20

Strongest tornadoes

Date	Rating	Path	Width	Injured	Killed
Dec 18, 1957	F4	28.3 mi	300 yd	200	11
May 29, 1982	F4	17 mi	400 yd	181	10
May 16, 2025	EF4	16.3 mi	900 yd	7	0
Nov 19, 1991	F3	1.5 mi	70 yd	16	0
Feb 29, 2012	EF2	14.9 mi	300 yd	0	0
Apr 3, 2018	EF2	12.3 mi	350 yd	0	0
Oct 18, 2004	F2	8.8 mi	250 yd	3	0
Apr 2, 2024	EF2	6.7 mi	250 yd	0	0
Jun 2, 1973	F2	0.1 mi	10 yd	0	0
Apr 3, 2018	EF1	10 mi	125 yd	0	0
Oct 31, 2013	EF1	9.9 mi	175 yd	0	0
Apr 2, 2024	EF1	7.6 mi	250 yd	0	0

Most recent tornadoes

Date	Rating	Path	Width	Injured
May 16, 2025	EF4	16.3 mi	900 yd	7
Apr 2, 2025	EF1	3.3 mi	75 yd	0
May 8, 2024	EF1	4.6 mi	75 yd	0
May 8, 2024	EF0	6.6 mi	25 yd	0
Apr 2, 2024	EF2	6.7 mi	250 yd	0
Apr 2, 2024	EF1	7.6 mi	250 yd	0
Jun 28, 2018	EF0	0.3 mi	75 yd	0
Apr 3, 2018	EF1	10 mi	125 yd	0
Apr 3, 2018	EF1	1.9 mi	150 yd	0
Apr 3, 2018	EF2	12.3 mi	350 yd	0
Apr 5, 2017	EF1	0.1 mi	25 yd	0
Feb 28, 2017	EF1	7.4 mi	25 yd	0

Deadliest: Dec 18, 1957, F4, 11 killed.

Nearby counties

Franklin County, IL21 Johnson County, IL20 Saline County, IL19 Union County, IL25 Jackson County, IL41 Pope County, IL14 Hamilton County, IL14 Perry County, IL25

Questions

How many tornadoes has Williamson County, Illinois had?

23 tornadoes touched Williamson County, Illinois between 1950 and 2025 in the NOAA Storm Prediction Center database — about 0.3 per year.

What was the strongest tornado in Williamson County?

The strongest rating recorded was F4 on Dec 18, 1957, with a 28.3-mile path and 11 deaths.

When is tornado season in Williamson County?

Most of its tornadoes happened in April (9 of 23). Tornadoes can occur in any month, so keep alerts on year-round.

Right now: live tornado warnings map · alerts for your location. Dates link to that day’s full storm reports where available.