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Tornado in Ransom County, North Dakota
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 Ransom County, North Dakota, between 1950 and 2026, spread over 22 years.
June is the busiest month, with 14 of the recorded events. The last 20 years account for 13 events against 8 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 1.9% of the 1,799 tornado events recorded in North Dakota; its 3.9 per 100 square miles compares with 2.6 statewide.
By rating: 12 at (E)F0, 8 at (E)F1, 7 at (E)F2, 0 at (E)F3, 0 at (E)F4, 1 at (E)F5 and 6 unrated. Tornadoes before 2007 carry the original Fujita rating.
Compared with North Dakota
| Measure | Ransom County | North Dakota | US |
|---|---|---|---|
| Tornado events since 1950 | 34 | 1,799 | 81,281 |
| Per 100 square miles | 3.9 | 2.6 | 2.3 |
| Per 10,000 residents | 59.9 | 23.2 | 2.4 |
| Deaths recorded | 0 | 29 | 6,410 |
| Busiest month | June | June | May |
By year
Seasonality
0Feb
0Mar
0Apr
1May
2Jun
14Jul
8Aug
8Sep
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 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 |
|---|---|---|---|---|---|---|---|
| 20 Jun 2025 | Tornado | EF2 | — | — | — | — | County |
| 20 Jun 2025 | Tornado | EF unrated | — | — | — | — | County |
| 20 Jun 2025 | Tornado | EF0 | — | — | — | — | County |
| 20 Jun 2025 | Tornado | EF0 | — | — | — | — | County |
| 20 Jun 2025 | Tornado | EF5 | — | — | — | — | County |
| 2 Jun 2024 | Tornado | EF unrated | — | — | — | — | County |
| 12 Aug 2010 | Tornado | EF0 | — | — | — | — | County |
| 14 Jul 2010 | Tornado | EF2 | $2.0M | $400K | — | — | County |
| 14 Jul 2010 | Tornado | EF1 | $1.0M | $250K | — | — | County |
| 24 May 2008 | Tornado | EF0 | — | — | — | — | County |
| 15 Jul 2007 | Tornado | EF1 | $250K | — | — | — | County |
| 15 Jul 2007 | Tornado | EF2 | $1.0M | $500K | — | — | County |
| 17 Jun 2007 | Tornado | EF0 | — | — | — | — | County |
| 5 Aug 2006 | Tornado | F0 | — | — | — | — | County |
| 5 Jun 2006 | Tornado | F0 | — | — | — | — | County |
| 20 Jun 2005 | Tornado | F1 | — | — | — | — | County |
| 15 Aug 1999 | Tornado | F2 | $1.2M | — | — | — | County |
| 18 Jul 1998 | Tornado | F1 | $250K | — | — | — | County |
| 27 May 1998 | Tornado | F0 | — | — | — | — | County |
| 28 Jun 1997 | Tornado | F0 | — | — | — | — | County |
| 16 Jun 1987 | Tornado | F0 | $25K | — | — | — | County |
| 15 Apr 1982 | Tornado | F2 | $25K | — | — | — | County |
| 10 Jul 1980 | Tornado | F1 | $25K | — | — | — | County |
| 16 Jun 1973 | Tornado | F1 | — | — | — | — | County |
| 6 Sep 1970 | Tornado | F1 | $25K | — | — | — | County |
| 29 Aug 1970 | Tornado | F2 | $25K | — | — | 7 | County |
| 25 Jun 1969 | Tornado | F1 | $25K | — | — | 1 | County |
| 7 Jul 1967 | Tornado | F0 | — | — | — | — | County |
| 7 Jun 1967 | Tornado | — | — | — | — | — | County |
| 31 Jul 1966 | Tornado | — | $250 | — | — | — | County |
| 24 Aug 1965 | Tornado | F0 | $25K | — | — | — | County |
| 25 Aug 1960 | Tornado | — | — | — | — | — | County |
| 28 Aug 1959 | Tornado | — | — | — | — | — | County |
| 12 Aug 1957 | Tornado | F2 | $25K | — | — | — | County |
Questions and answers
How many tornado events has Ransom 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 Ransom County?
20 Jun 2025 (Tornado, EF5). Records reach NCEI about 120 days after the month ends.
What was the most damaging tornado event recorded in Ransom County?
The tornado of 14 Jul 2010, with property damage estimated by NCEI at $2.0M and crop damage at $400K.
How does Ransom County compare with North Dakota for tornado?
3.9 events per 100 square miles against 2.6 statewide; the county holds 34 of the state's 1,799 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.