Decatur County tornado history

20 tornadoes touched Decatur County, Iowa between 1950 and 2025 — about 0.3 a year. The strongest was rated F4 (Jun 7, 1984). Tornadoes here killed 3 and injured 66 people.

20tornadoes since 1950

F4strongest rating

3killed · 66 injured

134 milongest path · 1984

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

By rating

(E)F07

(E)F13

(E)F25

(E)F31

(E)F43

(E)F50

unrated1

By month

JFMAMJJASOND

Peak month: May.

By decade

’50’60’70’80’90’00’10’20

Strongest tornadoes

Date	Rating	Path	Width	Injured	Killed
Jun 7, 1984	F4	134 mi	250 yd	64	3
May 24, 1989	F4	49 mi	1,760 yd	0	0
Jun 2, 1980	F4	31.2 mi	140 yd	0	0
May 27, 1995	F3	30.4 mi	150 yd	0	0
Apr 23, 1961	F2	68.6 mi	600 yd	2	0
Apr 29, 1970	F2	29.3 mi	800 yd	0	0
Mar 5, 2022	EF2	19.4 mi	300 yd	0	0
Jun 22, 1964	F2	1 mi	200 yd	0	0
May 7, 1975	F2	0.1 mi	10 yd	0	0
Nov 11, 2015	EF1	11.2 mi	200 yd	0	0
Jun 22, 1958	F1	1 mi	50 yd	0	0
Jul 13, 1986	F1	0.5 mi	40 yd	0	0

Most recent tornadoes

Date	Rating	Path	Width	Injured	Killed
Mar 5, 2022	EF2	19.4 mi	300 yd	0	0
Mar 5, 2022	unrated	2.1 mi	60 yd	0	0
Nov 11, 2015	EF1	11.2 mi	200 yd	0	0
Apr 8, 2001	F0	0.3 mi	30 yd	0	0
May 27, 1996	F0	0.1 mi	25 yd	0	0
May 27, 1995	F3	30.4 mi	150 yd	0	0
May 24, 1989	F4	49 mi	1,760 yd	0	0
Jul 13, 1986	F1	0.5 mi	40 yd	0	0
Jul 8, 1986	F0	0.2 mi	10 yd	0	0
Jul 8, 1986	F0	0.2 mi	10 yd	0	0
May 10, 1986	F0	0.1 mi	10 yd	0	0
Jun 7, 1984	F4	134 mi	250 yd	64	3

Deadliest: Jun 7, 1984, F4, 3 killed.

Nearby counties

Clarke County, IA20 Wayne County, IA33 Ringgold County, IA29 Mercer County, MO17 Harrison County, MO27 Lucas County, IA13 Union County, IA42 Worth County, MO14

Questions

How many tornadoes has Decatur County, Iowa had?

20 tornadoes touched Decatur County, Iowa between 1950 and 2025 in the NOAA Storm Prediction Center database — about 0.3 per year.

What was the strongest tornado in Decatur County?

The strongest rating recorded was F4 on Jun 7, 1984, with a 134-mile path and 3 deaths.

When is tornado season in Decatur County?

Most of its tornadoes happened in May (5 of 20). 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).