Hamilton County tornado history

56 tornadoes touched Hamilton County, Iowa between 1950 and 2025 — about 0.7 a year. The strongest was rated F4 (May 24, 1989). Tornadoes here killed 1 and injured 13 people.

56tornadoes since 1950

F4strongest rating

1killed · 13 injured

66 milongest path · 1989

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

By rating

(E)F028

(E)F118

(E)F28

(E)F31

(E)F41

(E)F50

By month

JFMAMJJASOND

Peak month: June.

By decade

’50’60’70’80’90’00’10’20

Strongest tornadoes

Date	Rating	Path	Width	Injured	Killed
May 24, 1989	F4	66 mi	150 yd	0	0
Nov 12, 2005	F3	17.6 mi	150 yd	3	1
Jun 7, 1953	F2	49 mi	200 yd	0	0
Mar 13, 1990	F2	22 mi	50 yd	0	0
Dec 15, 2021	EF2	16.3 mi	125 yd	0	0
Dec 15, 2021	EF2	12.1 mi	100 yd	0	0
May 17, 1991	F2	9 mi	60 yd	0	0
Jun 28, 1979	F2	7.2 mi	350 yd	10	0
Jun 28, 1979	F2	1 mi	177 yd	0	0
Jun 22, 1974	F2	0.1 mi	100 yd	0	0
Oct 16, 1980	F1	9 mi	30 yd	0	0
Jul 14, 2021	EF1	8.9 mi	160 yd	0	0

Most recent tornadoes

Date	Rating	Path	Width
May 24, 2024	EF1	2.9 mi	75 yd
Apr 7, 2024	EF1	0.7 mi	70 yd
Dec 15, 2021	EF2	16.3 mi	125 yd
Dec 15, 2021	EF2	12.1 mi	100 yd
Dec 15, 2021	EF0	7.6 mi	80 yd
Dec 15, 2021	EF0	8.8 mi	70 yd
Jul 14, 2021	EF0	8.8 mi	50 yd
Jul 14, 2021	EF1	8.9 mi	160 yd
Jul 19, 2018	EF0	2.7 mi	60 yd
Aug 31, 2014	EF1	4.6 mi	205 yd
Aug 31, 2014	EF0	5.6 mi	110 yd
Aug 31, 2014	EF1	5 mi	150 yd

Deadliest: Nov 12, 2005, F3, 1 killed.

Nearby counties

Wright County, IA40 Hardin County, IA47 Webster County, IA63 Boone County, IA58 Story County, IA66 Franklin County, IA29 Humboldt County, IA27 Greene County, IA35

Questions

How many tornadoes has Hamilton County, Iowa had?

56 tornadoes touched Hamilton County, Iowa between 1950 and 2025 in the NOAA Storm Prediction Center database — about 0.7 per year.

What was the strongest tornado in Hamilton County?

The strongest rating recorded was F4 on May 24, 1989, with a 66-mile path.

When is tornado season in Hamilton County?

Most of its tornadoes happened in June (14 of 56). 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).