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Tornado in Grant County, Oklahoma
80 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 80 tornado events in Grant County, Oklahoma, between 1950 and 2026, spread over 30 years.
May is the busiest month, with 37 of the recorded events. The last 20 years account for 22 events against 28 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 1.6% of the 5,054 tornado events recorded in Oklahoma; its 8.0 per 100 square miles compares with 7.4 statewide.
By rating: 40 at (E)F0, 17 at (E)F1, 8 at (E)F2, 8 at (E)F3, 3 at (E)F4, 0 at (E)F5 and 4 unrated. Tornadoes before 2007 carry the original Fujita rating.
Compared with Oklahoma
| Measure | Grant County | Oklahoma | US |
|---|---|---|---|
| Tornado events since 1950 | 80 | 5,054 | 81,281 |
| Per 100 square miles | 8.0 | 7.4 | 2.3 |
| Per 10,000 residents | 193.7 | 12.7 | 2.4 |
| Deaths recorded | 0 | 364 | 6,410 |
| Busiest month | May | May | May |
By year
Seasonality
0Feb
0Mar
12Apr
16May
37Jun
4Jul
2Aug
1Sep
7Oct
1Nov
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 80 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 |
|---|---|---|---|---|---|---|---|
| 23 Apr 2026 | Tornado | EF unrated | — | — | — | — | County |
| 5 Mar 2026 | Tornado | EF2 | $15K | — | — | — | County |
| 5 Mar 2026 | Tornado | EF1 | $250K | — | — | — | County |
| 5 Mar 2026 | Tornado | EF0 | $5K | — | — | — | County |
| 5 Mar 2026 | Tornado | EF0 | — | — | — | — | County |
| 17 Jun 2025 | Tornado | EF unrated | — | — | — | — | County |
| 3 Jun 2025 | Tornado | EF0 | — | — | — | — | County |
| 6 May 2015 | Tornado | EF0 | — | — | — | — | County |
| 30 Apr 2012 | Tornado | EF1 | — | — | — | — | County |
| 30 Apr 2012 | Tornado | EF1 | — | — | — | — | County |
| 30 Apr 2012 | Tornado | EF1 | — | — | — | — | County |
| 30 Apr 2012 | Tornado | EF1 | — | — | — | — | County |
| 14 Apr 2012 | Tornado | EF0 | — | — | — | — | County |
| 17 Sep 2011 | Tornado | EF0 | — | — | — | — | County |
| 17 Sep 2011 | Tornado | EF0 | — | — | — | — | County |
| 17 Sep 2011 | Tornado | EF0 | — | — | — | — | County |
| 10 May 2010 | Tornado | EF0 | — | — | — | — | County |
| 10 May 2010 | Tornado | EF3 | — | — | — | 1 | County |
| 10 May 2010 | Tornado | EF0 | — | — | — | — | County |
| 10 May 2010 | Tornado | EF1 | — | — | — | — | County |
| 10 May 2010 | Tornado | EF0 | — | — | — | — | County |
| 29 Mar 2007 | Tornado | EF0 | $15K | — | — | — | County |
| 18 Sep 2002 | Tornado | F0 | — | — | — | — | County |
| 8 May 2002 | Tornado | F0 | — | — | — | — | County |
| 11 Apr 2002 | Tornado | F0 | — | — | — | — | County |
| 15 Mar 2000 | Tornado | F0 | — | — | — | — | County |
| 5 Apr 1999 | Tornado | F0 | $12K | — | — | — | County |
| 4 Oct 1998 | Tornado | F0 | — | — | — | — | County |
| 24 May 1998 | Tornado | F0 | — | — | — | — | County |
| 24 May 1998 | Tornado | F0 | — | — | — | — | County |
| 24 May 1998 | Tornado | F0 | — | — | — | — | County |
| 24 May 1998 | Tornado | F0 | — | — | — | — | County |
| 24 May 1998 | Tornado | F0 | — | — | — | — | County |
| 24 May 1998 | Tornado | F0 | — | — | — | — | County |
| 24 May 1998 | Tornado | F0 | — | — | — | — | County |
| 24 May 1998 | Tornado | F1 | $5K | — | — | — | County |
| 24 May 1998 | Tornado | F0 | $1K | — | — | — | County |
| 24 May 1998 | Tornado | F1 | $5K | — | — | — | County |
| 24 May 1998 | Tornado | F1 | $15K | — | — | — | County |
| 24 May 1998 | Tornado | F3 | $2.0M | — | — | — | County |
| 7 May 1997 | Tornado | F0 | — | — | — | — | County |
| 7 May 1997 | Tornado | F0 | — | — | — | — | County |
| 7 May 1997 | Tornado | F0 | $3K | — | — | — | County |
| 25 Sep 1996 | Tornado | F0 | — | — | — | — | County |
| 25 Sep 1996 | Tornado | F0 | — | — | — | — | County |
| 12 Apr 1991 | Tornado | F3 | $2.5M | — | — | — | County |
| 12 Apr 1991 | Tornado | F3 | $250K | — | — | — | County |
| 26 Mar 1991 | Tornado | F3 | $2.5M | — | — | — | County |
| 13 Mar 1990 | Tornado | F3 | $250K | — | — | — | County |
| 13 Mar 1990 | Tornado | F3 | — | — | — | — | County |
| 8 Jun 1984 | Tornado | F0 | — | — | — | — | County |
| 12 May 1983 | Tornado | F0 | $30 | — | — | — | County |
| 24 Aug 1979 | Tornado | F0 | — | — | — | — | County |
| 6 May 1978 | Tornado | F1 | $250K | — | — | — | County |
| 20 May 1977 | Tornado | — | $250K | — | — | — | County |
| 6 May 1973 | Tornado | F1 | $25K | — | — | — | County |
| 30 Apr 1973 | Tornado | F2 | $250K | — | — | — | County |
| 1 Jul 1972 | Tornado | F1 | — | — | — | — | County |
| 30 Apr 1972 | Tornado | F0 | $25K | — | — | — | County |
| 4 Sep 1966 | Tornado | F1 | — | — | — | — | County |
| 5 Jun 1966 | Tornado | F1 | $3K | — | — | — | County |
| 16 May 1966 | Tornado | F0 | — | — | — | — | County |
| 13 May 1965 | Tornado | F2 | $250 | — | — | — | County |
| 4 Apr 1965 | Tornado | F0 | — | — | — | — | County |
| 16 Mar 1965 | Tornado | F4 | $250K | — | — | 2 | County |
| 16 Mar 1965 | Tornado | F4 | — | — | — | — | County |
| 16 Mar 1965 | Tornado | F4 | — | — | — | — | County |
| 6 May 1964 | Tornado | F2 | $3K | — | — | — | County |
| 5 May 1964 | Tornado | F1 | $3K | — | — | — | County |
| 4 Apr 1964 | Tornado | — | — | — | — | — | County |
| 17 May 1959 | Tornado | F2 | $250 | — | — | — | County |
| 17 May 1959 | Tornado | F2 | $250K | — | — | — | County |
| 12 Jul 1958 | Tornado | F0 | $30 | — | — | — | County |
| 21 Apr 1958 | Tornado | F1 | $30 | — | — | — | County |
| 30 May 1956 | Tornado | F0 | — | — | — | — | County |
| 2 Apr 1956 | Tornado | F2 | $250K | — | — | 4 | County |
| 27 May 1955 | Tornado | F0 | $250 | — | — | — | County |
| 27 May 1955 | Tornado | F1 | $3K | — | — | — | County |
| 25 May 1955 | Tornado | F3 | $25K | — | — | 1 | County |
| 10 May 1953 | Tornado | F2 | — | — | — | — | County |
Questions and answers
How many tornado events has Grant County had?
80 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?
23 Apr 2026 (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 12 Apr 1991, with property damage estimated by NCEI at $2.5M.
How does Grant County compare with Oklahoma for tornado?
8.0 events per 100 square miles against 7.4 statewide; the county holds 80 of the state's 5,054 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.