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Tornado in Grant County, Minnesota
32 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.
Grant County, Minnesota, has 32 tornado events in the NCEI record since 1950, with at least one in 19 different years.
June is the busiest month, with 9 of the recorded events. The last 20 years account for 18 events against 5 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 1.3% of the 2,433 tornado events recorded in Minnesota; its 5.8 per 100 square miles compares with 3.1 statewide.
By rating: 13 at (E)F0, 11 at (E)F1, 4 at (E)F2, 1 at (E)F3, 1 at (E)F4, 0 at (E)F5 and 2 unrated. Tornadoes before 2007 carry the original Fujita rating.
Compared with Minnesota
| Measure | Grant County | Minnesota | US |
|---|---|---|---|
| Tornado events since 1950 | 32 | 2,433 | 81,281 |
| Per 100 square miles | 5.8 | 3.1 | 2.3 |
| Per 10,000 residents | 52.0 | 4.3 | 2.4 |
| Deaths recorded | 0 | 101 | 6,410 |
| Busiest month | June | June | May |
By year
Seasonality
0Feb
0Mar
0Apr
1May
5Jun
9Jul
7Aug
9Sep
1Oct
0Nov
0Dec
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 32 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 |
|---|---|---|---|---|---|---|---|
| 21 Aug 2025 | Tornado | EF unrated | — | — | — | — | County |
| 21 Aug 2025 | Tornado | EF unrated | — | — | — | — | County |
| 30 May 2022 | Tornado | EF2 | $2.0M | — | — | — | County |
| 30 May 2022 | Tornado | EF2 | $1.0M | — | — | — | County |
| 12 May 2022 | Tornado | EF1 | — | — | — | — | County |
| 14 Aug 2020 | Tornado | EF0 | — | — | — | — | County |
| 14 Aug 2020 | Tornado | EF2 | — | — | — | — | County |
| 14 Aug 2020 | Tornado | EF1 | — | — | — | — | County |
| 14 Aug 2020 | Tornado | EF0 | — | — | — | — | County |
| 14 Aug 2020 | Tornado | EF0 | — | — | — | — | County |
| 8 Jul 2020 | Tornado | EF4 | $100K | $5K | — | — | County |
| 13 Jun 2017 | Tornado | EF0 | — | — | — | — | County |
| 12 Jul 2015 | Tornado | EF1 | — | — | — | — | County |
| 12 Jul 2015 | Tornado | EF0 | — | — | — | — | County |
| 17 Jun 2012 | Tornado | EF0 | — | — | — | — | County |
| 7 Aug 2010 | Tornado | EF1 | — | — | — | — | County |
| 10 Jul 2010 | Tornado | EF0 | — | — | — | — | County |
| 10 Jul 2010 | Tornado | EF0 | — | — | — | — | County |
| 5 Jun 2006 | Tornado | F1 | — | — | — | — | County |
| 20 Jun 2005 | Tornado | F1 | — | — | — | — | County |
| 13 Jun 2001 | Tornado | F0 | — | — | — | — | County |
| 13 Jun 2001 | Tornado | F0 | — | — | — | — | County |
| 30 Jun 1991 | Tornado | F1 | — | — | — | — | County |
| 30 May 1985 | Tornado | F0 | $3K | — | — | — | County |
| 4 Jun 1984 | Tornado | F0 | — | — | — | — | County |
| 26 Apr 1984 | Tornado | F2 | $2.5M | — | — | — | County |
| 10 May 1982 | Tornado | F3 | $2.5M | — | — | — | County |
| 31 Jul 1981 | Tornado | F0 | $30 | — | — | — | County |
| 28 Jun 1979 | Tornado | F1 | $250K | — | — | — | County |
| 5 Sep 1969 | Tornado | F1 | $3K | — | — | — | County |
| 18 Aug 1968 | Tornado | F1 | $250K | — | — | — | County |
| 2 Jul 1952 | Tornado | F1 | $25K | — | — | — | County |
Questions and answers
How many tornado events has Grant County had?
32 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 Grant County?
21 Aug 2025 (Tornado, EF unrated). Records reach NCEI about 120 days after the month ends.
What was the most damaging tornado event recorded in Grant County?
The tornado of 10 May 1982, with property damage estimated by NCEI at $2.5M.
How does Grant County compare with Minnesota for tornado?
5.8 events per 100 square miles against 3.1 statewide; the county holds 32 of the state's 2,433 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.