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Tornado in Brown 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.
Brown County, Minnesota, has 32 tornado events in the NCEI record since 1950, with at least one in 22 different years.
June is the busiest month, with 12 of the recorded events. The last 20 years account for 14 events against 9 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 5.2 per 100 square miles compares with 3.1 statewide.
NCEI attributes 1 death in the county to tornadoes.
By rating: 20 at (E)F0, 6 at (E)F1, 3 at (E)F2, 0 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 | Brown County | Minnesota | US |
|---|---|---|---|
| Tornado events since 1950 | 32 | 2,433 | 81,281 |
| Per 100 square miles | 5.2 | 3.1 | 2.3 |
| Per 10,000 residents | 12.4 | 4.3 | 2.4 |
| Deaths recorded | 1 | 101 | 6,410 |
| Busiest month | June | June | May |
By year
Seasonality
0Feb
0Mar
1Apr
1May
3Jun
12Jul
8Aug
7Sep
0Oct
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 |
|---|---|---|---|---|---|---|---|
| 26 Aug 2024 | Tornado | EF unrated | — | — | — | — | County |
| 11 May 2022 | Tornado | EF0 | — | — | — | — | County |
| 28 Aug 2021 | Tornado | EF0 | — | — | — | — | County |
| 28 Aug 2021 | Tornado | EF0 | — | — | — | — | County |
| 28 Aug 2021 | Tornado | EF0 | — | — | — | — | County |
| 28 Aug 2021 | Tornado | EF unrated | — | — | — | — | County |
| 20 Jun 2019 | Tornado | EF0 | $50K | — | — | — | County |
| 19 Jul 2017 | Tornado | EF0 | — | — | — | — | County |
| 8 May 2014 | Tornado | EF0 | — | — | — | — | County |
| 25 Jun 2010 | Tornado | EF2 | — | — | — | — | County |
| 19 Aug 2009 | Tornado | EF0 | — | $25K | — | — | County |
| 11 Jun 2008 | Tornado | EF0 | $100K | — | — | — | County |
| 11 Jun 2008 | Tornado | EF1 | $100K | — | — | — | County |
| 11 Jun 2008 | Tornado | EF1 | $300K | — | — | — | County |
| 24 Aug 2006 | Tornado | F0 | $200K | — | — | 2 | County |
| 18 Apr 2004 | Tornado | F0 | — | — | — | — | County |
| 14 Jul 2003 | Tornado | F0 | — | — | — | — | County |
| 14 Jul 2003 | Tornado | F0 | — | — | — | — | County |
| 14 May 2003 | Tornado | F0 | — | — | — | — | County |
| 29 Mar 1998 | Tornado | F4 | $45M | — | 1 | 16 | County |
| 6 Jul 1996 | Tornado | F0 | — | — | — | — | County |
| 27 Jul 1995 | Tornado | F1 | $5K | — | — | — | County |
| 16 Jun 1992 | Tornado | F1 | $250K | — | — | — | County |
| 13 Jun 1983 | Tornado | F0 | $25K | — | — | — | County |
| 21 Jun 1981 | Tornado | F0 | — | — | — | — | County |
| 21 Jun 1981 | Tornado | F2 | $250K | — | — | — | County |
| 27 Jul 1971 | Tornado | F0 | $25K | — | — | — | County |
| 6 Jul 1965 | Tornado | F0 | — | — | — | — | County |
| 4 Jul 1965 | Tornado | F0 | $3K | — | — | — | County |
| 5 Jun 1965 | Tornado | F1 | $25K | — | — | — | County |
| 13 Jun 1957 | Tornado | F1 | — | — | — | — | County |
| 23 Jun 1952 | Tornado | F2 | $2.5M | — | — | 5 | County |
Questions and answers
How many tornado events has Brown 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 Brown County?
26 Aug 2024 (Tornado, EF unrated). Records reach NCEI about 120 days after the month ends.
What was the most damaging tornado event recorded in Brown County?
The tornado of 29 Mar 1998, with property damage estimated by NCEI at $45M; 1 death recorded.
How does Brown County compare with Minnesota for tornado?
5.2 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.