Knox County tornado history

33 tornadoes touched Knox County, Illinois between 1950 and 2025 — about 0.4 a year. The strongest was rated F3 (Jun 14, 1974).

33tornadoes since 1950
F3strongest rating
0killed · 7 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)F015
(E)F112
(E)F24
(E)F31
(E)F40
(E)F50
unrated1

By month

JFMAMJJASOND

Peak month: June.

By decade

’50’60’70’80’90’00’10’20

Strongest tornadoes

DateRatingPathWidthInjuredKilled
Jun 14, 1974F348.6 mi440 yd20
May 13, 1995F214 mi880 yd20
Jun 5, 2010EF25.7 mi50 yd00
Mar 23, 1975F21 mi80 yd20
Mar 4, 1976F20.1 mi440 yd00
Jul 17, 1972F127.2 mi10 yd00
Apr 20, 2025EF116.5 mi150 yd00
Jun 18, 2021EF110.3 mi250 yd00
Mar 31, 1967F15.2 mi100 yd00
Apr 20, 2025EF14.4 mi120 yd00
Jul 17, 1968F13.8 mi127 yd00
Jun 29, 1998F13 mi200 yd10

Most recent tornadoes

DateRatingPathWidthInjuredKilled
Apr 20, 2025EF116.5 mi150 yd00
Apr 20, 2025EF14.4 mi120 yd00
Jul 15, 2024EF11.3 mi150 yd00
Jun 18, 2021EF110.3 mi250 yd00
Mar 28, 2020unrated0.1 mi10 yd00
May 27, 2019EF00.1 mi10 yd00
May 23, 2017EF00.1 mi10 yd00
Jun 5, 2010EF00.1 mi10 yd00
Jun 5, 2010EF25.7 mi50 yd00
Jun 8, 2005F00.1 mi10 yd00
Apr 20, 2004F02.8 mi30 yd00
Apr 30, 2003F01 mi10 yd00

Nearby counties

Warren County, IL38Stark County, IL15Peoria County, IL38Henry County, IL71Fulton County, IL50Mercer County, IL46Henderson County, IL15McDonough County, IL44

Questions

How many tornadoes has Knox County, Illinois had?

33 tornadoes touched Knox County, Illinois between 1950 and 2025 in the NOAA Storm Prediction Center database — about 0.4 per year.

What was the strongest tornado in Knox County?

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

When is tornado season in Knox County?

Most of its tornadoes happened in June (10 of 33). 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).