Sioux County tornado history

51 tornadoes touched Sioux County, Iowa between 1950 and 2025 — about 0.7 a year. The strongest was rated F3 (May 31, 1971).

51tornadoes since 1950
F3strongest rating
0killed · 1 injured
46.5 milongest path · 1971
(E)F0(E)F1(E)F2(E)F3(E)F4(E)F5· dots = start point only

By rating

(E)F030
(E)F110
(E)F26
(E)F33
(E)F40
(E)F50
unrated2

By month

JFMAMJJASOND

Peak month: May.

By decade

’50’60’70’80’90’00’10’20

Strongest tornadoes

DateRatingPathWidthInjuredKilled
May 31, 1971F346.5 mi100 yd00
Jul 5, 1978F38 mi100 yd00
Sep 22, 1968F34.7 mi50 yd00
May 1, 2008EF212.9 mi400 yd00
Jul 5, 1978F211.9 mi200 yd00
Jun 2, 1966F211.5 mi300 yd00
Jul 7, 1987F28 mi50 yd00
Aug 8, 1979F20.4 mi100 yd00
Jun 13, 1981F20.1 mi10 yd00
Apr 5, 1958F137 mi100 yd10
Jun 7, 1993F17.5 mi30 yd00
Mar 16, 1963F14.7 mi300 yd00

Most recent tornadoes

DateRatingPathWidthInjuredKilled
May 31, 2024EF00.7 mi25 yd00
Apr 16, 2024unrated—10 yd00
Apr 16, 2024EF00.9 mi25 yd00
Apr 16, 2024EF00.3 mi25 yd00
Aug 5, 2023EF00.9 mi30 yd00
Aug 5, 2023unrated0.1 mi10 yd00
May 17, 2017EF0—10 yd00
May 17, 2017EF0—10 yd00
May 23, 2016EF00.1 mi25 yd00
Oct 23, 2015EF00.2 mi50 yd00
Oct 23, 2015EF00.1 mi50 yd00
Oct 23, 2015EF00.2 mi50 yd00

Nearby counties

Lyon County, IA45Plymouth County, IA52O'Brien County, IA36Union County, SD24Lincoln County, SD59Osceola County, IA31Cherokee County, IA30Rock County, MN16

Questions

How many tornadoes has Sioux County, Iowa had?

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

What was the strongest tornado in Sioux County?

The strongest rating recorded was F3 on May 31, 1971, with a 46.5-mile path.

When is tornado season in Sioux County?

Most of its tornadoes happened in May (16 of 51). 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.