Union County tornado history

12 tornadoes touched Union County, Ohio between 1950 and 2025 — about 0.2 a year. The strongest was rated F3 (Nov 10, 2002). Tornadoes here killed 4 and injured 68 people.

12tornadoes since 1950

F3strongest rating

4killed · 68 injured

22.2 milongest path · 1965

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

By rating

(E)F04

(E)F15

(E)F22

(E)F31

(E)F40

(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
Nov 10, 2002	F3	9 mi	300 yd	2	0
Apr 11, 1965	F2	22.2 mi	400 yd	62	4
Mar 14, 2024	EF2	19.5 mi	600 yd	0	0
Jul 10, 1966	F1	2 mi	150 yd	0	0
Jun 21, 1981	F1	1.9 mi	100 yd	3	0
Nov 10, 2002	F1	0.5 mi	200 yd	0	0
Sep 12, 1963	F1	0.1 mi	10 yd	0	0
Mar 8, 1964	F1	0.1 mi	10 yd	0	0
Jun 6, 2010	EF0	3.4 mi	100 yd	0	0
Jun 19, 1973	F0	0.3 mi	100 yd	1	0
Jun 28, 1973	F0	0.3 mi	167 yd	0	0
Dec 29, 2024	EF0	0.3 mi	50 yd	0	0

Most recent tornadoes

Date	Rating	Path	Width	Injured	Killed
Dec 29, 2024	EF0	0.3 mi	50 yd	0	0
Mar 14, 2024	EF2	19.5 mi	600 yd	0	0
Jun 6, 2010	EF0	3.4 mi	100 yd	0	0
Nov 10, 2002	F3	9 mi	300 yd	2	0
Nov 10, 2002	F1	0.5 mi	200 yd	0	0
Jun 21, 1981	F1	1.9 mi	100 yd	3	0
Jun 28, 1973	F0	0.3 mi	167 yd	0	0
Jun 19, 1973	F0	0.3 mi	100 yd	1	0
Jul 10, 1966	F1	2 mi	150 yd	0	0
Apr 11, 1965	F2	22.2 mi	400 yd	62	4
Mar 8, 1964	F1	0.1 mi	10 yd	0	0
Sep 12, 1963	F1	0.1 mi	10 yd	0	0

Deadliest: Apr 11, 1965, F2, 4 killed.

Nearby counties

Delaware County, OH15 Logan County, OH8 Marion County, OH17 Champaign County, OH9 Madison County, OH16 Franklin County, OH41 Hardin County, OH10 Morrow County, OH17

Questions

How many tornadoes has Union County, Ohio had?

12 tornadoes touched Union County, Ohio between 1950 and 2025 in the NOAA Storm Prediction Center database — about 0.2 per year.

What was the strongest tornado in Union County?

The strongest rating recorded was F3 on Nov 10, 2002, with a 9-mile path.

When is tornado season in Union County?

Most of its tornadoes happened in June (4 of 12). 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.