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Tornado in Boone County, Indiana
34 tornadoes events in the NCEI Storm Events record, 1950 to 2026. Event types counted: Tornado.
NCEI notes that Storm Data is compiled from a variety of sources including the National Weather Service, other federal, state and local agencies, the media and the public; that property and crop damage figures are estimates; and that some events are recorded by NWS forecast zone rather than by county. FEMA notes that NFIP claim records are redacted and aggregated to protect the privacy of policyholders. Storm records through 30 Jun 2026.
NCEI records 34 tornado events in Boone County, Indiana, between 1950 and 2026, spread over 19 years.
April is the busiest month, with 6 of the recorded events. The last 20 years account for 8 events against 12 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 1.6% of the 2,103 tornado events recorded in Indiana; its 8.0 per 100 square miles compares with 5.9 statewide.
NCEI attributes 20 deaths in the county to tornadoes.
By rating: 8 at (E)F0, 12 at (E)F1, 11 at (E)F2, 2 at (E)F3, 1 at (E)F4, 0 at (E)F5. Tornadoes before 2007 carry the original Fujita rating.
Compared with Indiana
| Measure | Boone County | Indiana | US |
|---|---|---|---|
| Tornado events since 1950 | 34 | 2,103 | 81,281 |
| Per 100 square miles | 8.0 | 5.9 | 2.3 |
| Per 10,000 residents | 4.7 | 3.1 | 2.4 |
| Deaths recorded | 20 | 276 | 6,410 |
| Busiest month | April | June | May |
By year
Seasonality
0Feb
1Mar
5Apr
6May
4Jun
6Jul
4Aug
3Sep
0Oct
1Nov
4Dec
0
Magnitude distribution
Enhanced Fujita scale wind estimates
- EF0/F0
- 65–85 mph (EF0)
- EF1/F1
- 86–110 mph (EF1)
- EF2/F2
- 111–135 mph (EF2)
- EF3/F3
- 136–165 mph (EF3)
- EF4/F4
- 166–200 mph (EF4)
- EF5/F5
- over 200 mph (EF5)
- Unrated
- no rating recorded
Tornado rating as recorded (Fujita scale before February 2007, Enhanced Fujita after).
Recorded events
All 34 events, most recent first. Magnitude is hail size, tornado rating or wind speed as recorded.
| Date | Event type | Magnitude | Property damage | Crop damage | Deaths | Injuries | Geography |
|---|---|---|---|---|---|---|---|
| 31 Mar 2023 | Tornado | EF0 | $120K | — | — | — | County |
| 31 Mar 2023 | Tornado | EF0 | $150K | — | — | — | County |
| 20 May 2017 | Tornado | EF1 | $20K | — | — | — | County |
| 15 Aug 2016 | Tornado | EF2 | $25K | $3K | — | — | County |
| 28 Apr 2016 | Tornado | EF1 | $35K | — | — | — | County |
| 17 Nov 2013 | Tornado | EF1 | $10K | — | — | — | County |
| 17 Nov 2013 | Tornado | EF2 | $200K | — | — | 2 | County |
| 19 Apr 2011 | Tornado | EF1 | $10K | — | — | — | County |
| 20 Apr 2004 | Tornado | F0 | $75K | — | — | — | County |
| 20 Apr 2004 | Tornado | F1 | $1.6M | — | — | 8 | County |
| 21 Jul 2003 | Tornado | F0 | $10K | $5K | — | — | County |
| 4 Jul 2003 | Tornado | F0 | — | — | — | — | County |
| 14 May 2003 | Tornado | F1 | $50K | — | — | — | County |
| 14 May 1995 | Tornado | F2 | $2.0M | — | — | 5 | County |
| 17 May 1991 | Tornado | F0 | $250K | — | — | — | County |
| 3 Oct 1990 | Tornado | F1 | $250K | — | — | — | County |
| 2 Jun 1990 | Tornado | F1 | $25K | — | — | 1 | County |
| 2 Jun 1990 | Tornado | F1 | $250K | — | — | — | County |
| 2 Jun 1990 | Tornado | F0 | $25K | — | — | — | County |
| 2 Jun 1990 | Tornado | F1 | $25K | — | — | 5 | County |
| 1 Jun 1980 | Tornado | F0 | — | — | — | — | County |
| 3 Apr 1974 | Tornado | F2 | — | — | — | — | County |
| 26 Jun 1973 | Tornado | F1 | $25K | — | — | — | County |
| 15 Mar 1971 | Tornado | F2 | $25K | — | — | 2 | County |
| 26 Nov 1965 | Tornado | F2 | $250K | — | — | — | County |
| 26 Nov 1965 | Tornado | F3 | $250K | — | — | — | County |
| 25 Aug 1965 | Tornado | F2 | $250K | — | — | — | County |
| 11 Apr 1965 | Tornado | F4 | $25M | — | 20 | 80 | County |
| 11 Mar 1962 | Tornado | F3 | $25K | — | — | — | County |
| 19 Aug 1961 | Tornado | F2 | $25K | — | — | — | County |
| 28 Jul 1961 | Tornado | F1 | $3K | — | — | — | County |
| 6 Mar 1961 | Tornado | F2 | $25K | — | — | 2 | County |
| 12 Jul 1957 | Tornado | F2 | $25K | — | — | — | County |
| 25 Feb 1956 | Tornado | F2 | $25K | — | — | — | County |
Questions and answers
How many tornado events has Boone County had?
34 events in the NCEI Storm Events record between 1950 and 2026. Reporting of tornadoes became far more complete after 1996, so early decades undercount.
When was the last recorded tornado event in Boone County?
31 Mar 2023 (Tornado, EF0). Records reach NCEI about 120 days after the month ends.
What was the most damaging tornado event recorded in Boone County?
The tornado of 11 Apr 1965, with property damage estimated by NCEI at $25M; 20 deaths recorded.
How does Boone County compare with Indiana for tornado?
8.0 events per 100 square miles against 5.9 statewide; the county holds 34 of the state's 2,103 recorded events.
Provenance
NOAA NCEI Storm Events Database, yearly details files through 30 Jun 2026, public domain. County-recorded events plus zone-recorded events whose forecast zone is named for the county (marked "Forecast zone"). Population and area from the US Census Bureau (2021). Built 1 Oct 2026. See the methodology, the Tornado hub and the county page.