Mercer County tornado history

46 tornadoes touched Mercer County, Illinois between 1950 and 2025 — about 0.6 a year. The strongest was rated F3 (Jun 14, 1974).

46tornadoes since 1950

F3strongest rating

0killed · 6 injured

48.6 milongest path · 1974

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

By rating

(E)F014

(E)F122

(E)F26

(E)F32

(E)F40

(E)F50

unrated2

JFMAMJJASOND

Peak month: April.

’50’60’70’80’90’00’10’20

Date	Rating	Path	Width	Injured
Jun 14, 1974	F3	48.6 mi	440 yd	2
Aug 15, 1978	F3	6.4 mi	77 yd	0
Apr 21, 1973	F2	30.2 mi	10 yd	2
May 24, 2015	EF2	6.8 mi	50 yd	0
Jun 18, 1998	F2	6 mi	880 yd	0
Apr 13, 2006	F2	2 mi	50 yd	0
Apr 13, 1974	F2	0.1 mi	20 yd	0
Apr 13, 1974	F2	0.1 mi	17 yd	1
Apr 23, 1965	F1	25.4 mi	100 yd	1
Jul 15, 2024	EF1	24.7 mi	100 yd	0
Nov 10, 2020	EF1	20.3 mi	50 yd	0
Apr 13, 2006	F1	13 mi	880 yd	0

Date	Rating	Path	Width
Jun 3, 2025	EF1	1.6 mi	175 yd
Jun 3, 2025	EF1	10.8 mi	250 yd
Jun 3, 2025	EF1	3.8 mi	100 yd
Apr 20, 2025	EF0	0.9 mi	25 yd
Jul 15, 2024	EF1	24.7 mi	100 yd
Aug 20, 2022	unrated	0.3 mi	10 yd
Aug 20, 2022	unrated	2.8 mi	10 yd
Nov 10, 2020	EF1	20.3 mi	50 yd
Nov 10, 2020	EF1	0.5 mi	30 yd
Jun 15, 2019	EF1	0.7 mi	40 yd
May 17, 2017	EF1	8.1 mi	150 yd
Dec 23, 2015	EF0	10.6 mi	50 yd

How many tornadoes has Mercer County, Illinois had?

46 tornadoes touched Mercer County, Illinois between 1950 and 2025 in the NOAA Storm Prediction Center database — about 0.6 per year.

What was the strongest tornado in Mercer County?

The strongest rating recorded was F3 on Jun 14, 1974, with a 48.6-mile path.

When is tornado season in Mercer County?

Most of its tornadoes happened in April (16 of 46). 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 (2004 onward).