31 tornadoes touched Osceola County, Iowa between 1950 and 2025 — about 0.4 a year. The strongest was rated EF4 (Jun 25, 2010).
Peak month: June.
| Date | Rating | Path | Width | Injured | Killed |
|---|---|---|---|---|---|
| Jun 25, 2010 | EF4 | 13.7 mi | 800 yd | 13 | 0 |
| May 31, 1971 | F3 | 46.5 mi | 100 yd | 0 | 0 |
| May 31, 1971 | F3 | 8.6 mi | 250 yd | 0 | 0 |
| Aug 7, 1994 | F3 | 4.5 mi | 73 yd | 1 | 0 |
| Jun 14, 1981 | F2 | 21.9 mi | 1,533 yd | 0 | 0 |
| May 5, 1965 | F2 | 21.8 mi | 10 yd | 0 | 0 |
| Jun 14, 1981 | F2 | 21.6 mi | 1,533 yd | 0 | 0 |
| Jun 7, 1993 | F2 | 10 mi | 127 yd | 5 | 0 |
| May 8, 1964 | F2 | 5.1 mi | 200 yd | 0 | 0 |
| Aug 18, 2017 | EF2 | 5.1 mi | 250 yd | 0 | 0 |
| Jun 6, 1982 | F2 | 2 mi | 67 yd | 0 | 0 |
| Jul 9, 1966 | F2 | 1 mi | 200 yd | 0 | 0 |
| Date | Rating | Path | Width | Injured | Killed |
|---|---|---|---|---|---|
| Aug 20, 2021 | EF0 | 3.6 mi | 30 yd | 0 | 0 |
| Aug 8, 2021 | unrated | 0.8 mi | 40 yd | 0 | 0 |
| Aug 8, 2021 | EF0 | 2.4 mi | 50 yd | 0 | 0 |
| Aug 18, 2017 | EF1 | 1.6 mi | 100 yd | 0 | 0 |
| Aug 18, 2017 | EF2 | 5.1 mi | 250 yd | 0 | 0 |
| May 11, 2011 | EF0 | 0.5 mi | 50 yd | 0 | 0 |
| Jun 26, 2010 | EF0 | 0.1 mi | 50 yd | 0 | 0 |
| Jun 26, 2010 | EF0 | 0.1 mi | 50 yd | 0 | 0 |
| Jun 25, 2010 | EF4 | 13.7 mi | 800 yd | 13 | 0 |
| Jun 25, 2010 | EF0 | 0.2 mi | 50 yd | 0 | 0 |
| Jun 11, 2008 | EF0 | 0.8 mi | 50 yd | 0 | 0 |
| May 1, 2008 | EF0 | 0.1 mi | 50 yd | 0 | 0 |
31 tornadoes touched Osceola County, Iowa between 1950 and 2025 in the NOAA Storm Prediction Center database — about 0.4 per year.
The strongest rating recorded was EF4 on Jun 25, 2010, with a 13.7-mile path.
Most of its tornadoes happened in June (16 of 31). 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).