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Tornado in Williamson County, Texas
71 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.
Williamson County, Texas, has 71 tornado events in the NCEI record since 1950, with at least one in 39 different years.
May is the busiest month, with 24 of the recorded events. The last 20 years account for 18 events against 18 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 0.7% of the 10,090 tornado events recorded in Texas; its 6.4 per 100 square miles compares with 3.9 statewide.
NCEI attributes 29 deaths in the county to tornadoes.
By rating: 23 at (E)F0, 28 at (E)F1, 14 at (E)F2, 5 at (E)F3, 0 at (E)F4, 1 at (E)F5. Tornadoes before 2007 carry the original Fujita rating.
Compared with Texas
| Measure | Williamson County | Texas | US |
|---|---|---|---|
| Tornado events since 1950 | 71 | 10,090 | 81,281 |
| Per 100 square miles | 6.4 | 3.9 | 2.3 |
| Per 10,000 residents | 1.1 | 3.4 | 2.4 |
| Deaths recorded | 29 | 595 | 6,410 |
| Busiest month | May | May | May |
By year
Seasonality
1Feb
4Mar
7Apr
12May
24Jun
5Jul
4Aug
1Sep
3Oct
3Nov
5Dec
2
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 71 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 |
|---|---|---|---|---|---|---|---|
| 24 Oct 2022 | Tornado | EF1 | $500K | — | — | — | County |
| 12 Apr 2022 | Tornado | EF1 | $100K | — | — | — | County |
| 21 Mar 2022 | Tornado | EF2 | — | — | — | — | County |
| 21 Mar 2022 | Tornado | EF1 | — | — | — | — | County |
| 9 Jun 2019 | Tornado | EF0 | $5K | — | — | — | County |
| 4 Jul 2018 | Tornado | EF0 | $1K | — | — | — | County |
| 20 May 2018 | Tornado | EF1 | $50K | — | — | — | County |
| 15 Jul 2017 | Tornado | EF0 | $100K | — | — | — | County |
| 20 Feb 2017 | Tornado | EF2 | — | — | — | — | County |
| 20 Feb 2017 | Tornado | EF2 | — | — | — | — | County |
| 13 Jan 2017 | Tornado | EF0 | — | — | — | — | County |
| 8 Mar 2016 | Tornado | EF0 | — | — | — | — | County |
| 25 May 2015 | Tornado | EF1 | $50K | — | — | — | County |
| 23 May 2015 | Tornado | EF1 | — | — | — | — | County |
| 23 May 2015 | Tornado | EF1 | — | — | — | — | County |
| 23 May 2015 | Tornado | EF0 | — | — | — | — | County |
| 21 May 2011 | Tornado | EF0 | $100K | — | — | — | County |
| 27 Apr 2009 | Tornado | EF1 | $1.0M | — | — | — | County |
| 14 May 2006 | Tornado | F0 | — | — | — | — | County |
| 23 Nov 2004 | Tornado | F0 | — | — | — | — | County |
| 23 Nov 2004 | Tornado | F0 | — | — | — | — | County |
| 23 Nov 2004 | Tornado | F0 | — | — | — | — | County |
| 23 Nov 2004 | Tornado | F0 | — | — | — | — | County |
| 15 Nov 2001 | Tornado | F0 | — | — | — | — | County |
| 16 Mar 2000 | Tornado | F0 | — | — | — | — | County |
| 16 Mar 2000 | Tornado | F2 | $300K | — | — | — | County |
| 16 Mar 2000 | Tornado | F0 | — | — | — | — | County |
| 4 Jul 1998 | Tornado | F1 | $30K | — | — | — | County |
| 27 May 1997 | Tornado | F2 | — | — | — | — | County |
| 27 May 1997 | Tornado | F5 | $40M | $100K | 27 | 12 | County |
| 27 May 1997 | Tornado | F3 | $70M | $50K | — | 15 | County |
| 27 May 1997 | Tornado | F2 | — | — | — | — | County |
| 13 May 1994 | Tornado | F0 | $5K | $5K | — | — | County |
| 1 Jun 1992 | Tornado | F0 | — | — | — | — | County |
| 28 Apr 1991 | Tornado | F0 | — | — | — | — | County |
| 17 May 1989 | Tornado | F3 | $2.5M | — | 1 | 28 | County |
| 10 Dec 1985 | Tornado | F1 | $250K | — | — | 1 | County |
| 10 Dec 1985 | Tornado | F2 | $2.5M | — | — | 2 | County |
| 19 Sep 1983 | Tornado | F0 | $30 | — | — | — | County |
| 4 Jun 1983 | Tornado | F1 | $250K | — | — | — | County |
| 18 May 1983 | Tornado | F1 | $3K | — | — | — | County |
| 20 Apr 1982 | Tornado | F1 | — | — | — | — | County |
| 16 May 1981 | Tornado | F1 | $250K | — | — | 4 | County |
| 10 Feb 1981 | Tornado | F2 | $250K | — | — | — | County |
| 10 Aug 1980 | Tornado | F0 | $250K | — | — | — | County |
| 7 Apr 1980 | Tornado | F3 | $250K | — | 1 | 2 | County |
| 29 Feb 1980 | Tornado | F1 | — | — | — | — | County |
| 28 Jul 1978 | Tornado | F2 | $25K | — | — | — | County |
| 14 Apr 1977 | Tornado | F2 | $250K | — | — | — | County |
| 7 May 1975 | Tornado | F1 | $3K | — | — | — | County |
| 30 Oct 1974 | Tornado | F2 | — | — | — | — | County |
| 21 Oct 1972 | Tornado | F1 | $25K | — | — | — | County |
| 24 May 1972 | Tornado | F1 | — | — | — | — | County |
| 24 May 1972 | Tornado | F1 | — | — | — | — | County |
| 24 May 1972 | Tornado | F1 | $250 | — | — | — | County |
| 27 Apr 1972 | Tornado | F0 | — | — | — | — | County |
| 8 Apr 1968 | Tornado | F0 | — | — | — | — | County |
| 4 Sep 1967 | Tornado | F0 | — | — | — | — | County |
| 18 May 1966 | Tornado | F1 | $3K | — | — | — | County |
| 18 May 1966 | Tornado | F1 | — | — | — | — | County |
| 18 May 1966 | Tornado | F1 | — | — | — | — | County |
| 18 May 1966 | Tornado | F2 | — | — | — | — | County |
| 26 Apr 1964 | Tornado | F2 | $3K | — | — | — | County |
| 10 Mar 1963 | Tornado | F1 | $250 | — | — | — | County |
| 29 Jun 1961 | Tornado | F1 | — | — | — | — | County |
| 2 May 1958 | Tornado | F1 | $30 | — | — | — | County |
| 24 Apr 1957 | Tornado | F1 | $3K | — | — | — | County |
| 24 Apr 1957 | Tornado | F3 | $250K | — | — | — | County |
| 4 Sep 1956 | Tornado | F2 | $25K | — | — | — | County |
| 5 Jun 1955 | Tornado | F1 | — | — | — | — | County |
| 30 Apr 1954 | Tornado | F3 | $250K | — | — | 6 | County |
Questions and answers
How many tornado events has Williamson County had?
71 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 Williamson County?
24 Oct 2022 (Tornado, EF1). Records reach NCEI about 120 days after the month ends.
What was the most damaging tornado event recorded in Williamson County?
The tornado of 27 May 1997, with property damage estimated by NCEI at $70M and crop damage at $50K.
How does Williamson County compare with Texas for tornado?
6.4 events per 100 square miles against 3.9 statewide; the county holds 71 of the state's 10,090 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.