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Tornado in Harrison County, Missouri
24 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 24 tornado events in Harrison County, Missouri, between 1950 and 2026, spread over 15 years.
May is the busiest month, with 9 of the recorded events. The last 20 years account for 2 events against 11 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 0.8% of the 3,118 tornado events recorded in Missouri; its 3.3 per 100 square miles compares with 4.5 statewide.
NCEI attributes 1 death in the county to tornadoes.
By rating: 9 at (E)F0, 8 at (E)F1, 3 at (E)F2, 2 at (E)F3, 2 at (E)F4, 0 at (E)F5. Tornadoes before 2007 carry the original Fujita rating.
Compared with Missouri
| Measure | Harrison County | Missouri | US |
|---|---|---|---|
| Tornado events since 1950 | 24 | 3,118 | 81,281 |
| Per 100 square miles | 3.3 | 4.5 | 2.3 |
| Per 10,000 residents | 29.4 | 5.1 | 2.4 |
| Deaths recorded | 1 | 429 | 6,410 |
| Busiest month | May | May | May |
By year
Seasonality
0Feb
0Mar
1Apr
4May
9Jun
6Jul
0Aug
0Sep
2Oct
1Nov
1Dec
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 24 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 |
|---|---|---|---|---|---|---|---|
| 28 Jun 2017 | Tornado | EF1 | — | — | — | — | County |
| 30 Jun 2014 | Tornado | EF0 | — | — | — | — | County |
| 30 Mar 2006 | Tornado | F0 | — | — | — | — | County |
| 4 Jun 2005 | Tornado | F1 | — | — | — | — | County |
| 29 May 2004 | Tornado | F0 | — | — | — | — | County |
| 29 May 2004 | Tornado | F4 | — | — | — | — | County |
| 27 May 2004 | Tornado | F0 | — | — | — | — | County |
| 24 May 2004 | Tornado | F0 | — | — | — | — | County |
| 24 May 2004 | Tornado | F0 | — | — | — | — | County |
| 30 Apr 2003 | Tornado | F0 | $3K | — | — | — | County |
| 30 Apr 2003 | Tornado | F0 | — | — | — | — | County |
| 24 May 1989 | Tornado | F2 | $2.5M | — | — | — | County |
| 24 May 1989 | Tornado | F1 | $250K | — | — | — | County |
| 7 Jun 1984 | Tornado | F4 | $2.5M | — | 1 | 1 | County |
| 21 May 1977 | Tornado | F1 | $25K | — | — | — | County |
| 29 Apr 1970 | Tornado | F2 | $250K | — | — | — | County |
| 12 Jun 1967 | Tornado | F1 | $3K | — | — | — | County |
| 20 Sep 1965 | Tornado | F1 | $3K | — | — | — | County |
| 18 Sep 1965 | Tornado | F0 | $30 | — | — | — | County |
| 7 Jun 1961 | Tornado | F1 | $3K | — | — | — | County |
| 16 May 1960 | Tornado | F1 | $3K | — | — | — | County |
| 16 Apr 1960 | Tornado | F3 | $25K | — | — | 4 | County |
| 17 Nov 1958 | Tornado | F2 | $250K | — | — | — | County |
| 8 Oct 1958 | Tornado | F3 | $250K | — | — | — | County |
Questions and answers
How many tornado events has Harrison County had?
24 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 Harrison County?
28 Jun 2017 (Tornado, EF1). Records reach NCEI about 120 days after the month ends.
What was the most damaging tornado event recorded in Harrison County?
The tornado of 7 Jun 1984, with property damage estimated by NCEI at $2.5M; 1 death recorded.
How does Harrison County compare with Missouri for tornado?
3.3 events per 100 square miles against 4.5 statewide; the county holds 24 of the state's 3,118 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.