Winnebago County tornado history

24 tornadoes touched Winnebago County, Illinois between 1950 and 2025 — about 0.3 a year. The strongest was rated F2 (Oct 8, 1958). Tornadoes here killed 2 and injured 46 people.

24tornadoes since 1950

F2strongest rating

2killed · 46 injured

81 milongest path · 1958

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

By rating

(E)F09

(E)F111

(E)F24

(E)F30

(E)F40

(E)F50

By month

JFMAMJJASOND

Peak month: May.

By decade

’50’60’70’80’90’00’10’20

Strongest tornadoes

Date	Rating	Path	Width	Injured	Killed
Oct 8, 1958	F2	81 mi	10 yd	0	1
Nov 22, 2010	EF2	18.1 mi	200 yd	6	0
Aug 17, 1979	F2	0.5 mi	50 yd	0	0
Aug 30, 1958	F2	0.1 mi	10 yd	0	0
Mar 31, 2023	EF1	27.5 mi	600 yd	40	1
May 22, 2011	EF1	29.1 mi	200 yd	0	0
Aug 10, 2020	EF1	9.2 mi	300 yd	0	0
Mar 31, 2023	EF1	8.6 mi	300 yd	0	0
Jun 28, 2017	EF1	5.9 mi	200 yd	0	0
Mar 31, 2023	EF1	5.8 mi	300 yd	0	0
Aug 28, 1990	F1	3 mi	103 yd	0	0
May 22, 2011	EF1	2.7 mi	50 yd	0	0

Most recent tornadoes

Date	Rating	Path	Width	Injured	Killed
Jul 15, 2024	EF0	1.2 mi	100 yd	0	0
Jul 15, 2024	EF0	0.2 mi	25 yd	0	0
Mar 31, 2023	EF1	27.5 mi	600 yd	40	1
Mar 31, 2023	EF1	5.8 mi	300 yd	0	0
Mar 31, 2023	EF1	8.6 mi	300 yd	0	0
Aug 10, 2020	EF0	1.6 mi	50 yd	0	0
Aug 10, 2020	EF1	9.2 mi	300 yd	0	0
Jun 28, 2017	EF1	5.9 mi	200 yd	0	0
Jun 28, 2017	EF1	1.6 mi	100 yd	0	0
Apr 9, 2015	EF0	2.8 mi	25 yd	0	0
May 22, 2011	EF1	29.1 mi	200 yd	0	0
May 22, 2011	EF1	2.7 mi	50 yd	0	0

Deadliest: Oct 8, 1958, F2, 1 killed.

Nearby counties

Boone County, IL25 Ogle County, IL33 Rock County, WI36 Stephenson County, IL21 Green County, WI35 McHenry County, IL30 DeKalb County, IL30 Walworth County, WI41

Questions

How many tornadoes has Winnebago County, Illinois had?

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

What was the strongest tornado in Winnebago County?

The strongest rating recorded was F2 on Oct 8, 1958, with a 81-mile path and 1 deaths.

When is tornado season in Winnebago County?

Most of its tornadoes happened in May (5 of 24). 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).