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Tornado in Greene County, Illinois
21 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.
Greene County, Illinois, has 21 tornado events in the NCEI record since 1950, with at least one in 15 different years.
May is the busiest month, with 7 of the recorded events. The last 20 years account for 8 events against 7 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 0.6% of the 3,647 tornado events recorded in Illinois; its 3.9 per 100 square miles compares with 6.6 statewide.
By rating: 4 at (E)F0, 9 at (E)F1, 4 at (E)F2, 1 at (E)F3, 0 at (E)F4, 0 at (E)F5 and 3 unrated. Tornadoes before 2007 carry the original Fujita rating.
Compared with Illinois
| Measure | Greene County | Illinois | US |
|---|---|---|---|
| Tornado events since 1950 | 21 | 3,647 | 81,281 |
| Per 100 square miles | 3.9 | 6.6 | 2.3 |
| Per 10,000 residents | 17.7 | 2.9 | 2.4 |
| Deaths recorded | 0 | 236 | 6,410 |
| Busiest month | May | April | May |
By year
Seasonality
0Feb
1Mar
5Apr
2May
7Jun
1Jul
1Aug
2Sep
0Oct
1Nov
1Dec
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 21 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 |
|---|---|---|---|---|---|---|---|
| 18 Apr 2024 | Tornado | EF unrated | — | — | — | — | County |
| 11 Oct 2021 | Tornado | EF2 | $100K | — | — | — | County |
| 26 Jun 2021 | Tornado | EF unrated | — | — | — | — | County |
| 15 May 2018 | Tornado | EF0 | — | — | — | — | County |
| 29 May 2015 | Tornado | EF1 | — | — | — | — | County |
| 31 Aug 2012 | Tornado | EF0 | — | — | — | — | County |
| 19 Aug 2009 | Tornado | EF0 | — | — | — | — | County |
| 8 Mar 2009 | Tornado | EF1 | — | — | — | — | County |
| 12 Mar 2006 | Tornado | F2 | — | — | — | — | County |
| 12 Mar 2006 | Tornado | F1 | — | — | — | 2 | County |
| 12 Mar 2006 | Tornado | F1 | — | — | — | — | County |
| 11 Feb 1999 | Tornado | F1 | $80K | — | — | — | County |
| 25 Jul 1995 | Tornado | — | $200 | $2K | — | — | County |
| 27 May 1995 | Tornado | F1 | $145 | — | — | — | County |
| 15 Nov 1988 | Tornado | F2 | $250K | — | — | — | County |
| 1 May 1983 | Tornado | F3 | $2.5M | — | — | 15 | County |
| 20 May 1975 | Tornado | F2 | $250K | — | — | — | County |
| 30 Apr 1962 | Tornado | F1 | $25K | — | — | — | County |
| 20 May 1960 | Tornado | F0 | $3K | — | — | — | County |
| 6 May 1960 | Tornado | F1 | $250K | — | — | — | County |
| 18 Mar 1952 | Tornado | F1 | $25K | — | — | 1 | County |
Questions and answers
How many tornado events has Greene County had?
21 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 Greene County?
18 Apr 2024 (Tornado, EF unrated). Records reach NCEI about 120 days after the month ends.
What was the most damaging tornado event recorded in Greene County?
The tornado of 1 May 1983, with property damage estimated by NCEI at $2.5M.
How does Greene County compare with Illinois for tornado?
3.9 events per 100 square miles against 6.6 statewide; the county holds 21 of the state's 3,647 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.