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Flood in Greene County, Ohio
96 floods and flash floods events in the NCEI Storm Events record, 1950 to 2026. Event types counted: Flood, Flash Flood, Coastal Flood, Lakeshore Flood.
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 96 flood events in Greene County, Ohio, between 1950 and 2026, spread over 24 years.
June is the busiest month, with 26 of the recorded events. The last 20 years account for 68 events against 28 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 1.4% of the 6,794 flood events recorded in Ohio; its 23.2 per 100 square miles compares with 16.6 statewide.
Compared with Ohio
| Measure | Greene County | Ohio | US |
|---|---|---|---|
| Flood events since 1950 | 96 | 6,794 | 183,559 |
| Per 100 square miles | 23.2 | 16.6 | 5.2 |
| Per 10,000 residents | 5.7 | 5.8 | 5.5 |
| Deaths recorded | 0 | 74 | 2,961 |
| Busiest month | June | June | June |
By year
Seasonality
4Feb
8Mar
13Apr
9May
14Jun
26Jul
6Aug
5Sep
4Oct
0Nov
4Dec
3
Recorded events
All 96 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 |
|---|---|---|---|---|---|---|---|
| 27 May 2026 | Flood | — | — | — | — | — | County |
| 23 May 2026 | Flood | — | $3K | — | — | — | County |
| 19 May 2026 | Flood | — | — | — | — | — | County |
| 5 Mar 2026 | Flood | — | — | — | — | — | County |
| 5 Mar 2026 | Flood | — | — | — | — | — | County |
| 5 Mar 2026 | Flood | — | — | — | — | — | County |
| 20 Feb 2026 | Flash Flood | — | — | — | — | — | County |
| 20 Feb 2026 | Flood | — | — | — | — | — | County |
| 20 Feb 2026 | Flood | — | — | — | — | — | County |
| 19 Feb 2026 | Flash Flood | — | $2K | — | — | — | County |
| 13 Aug 2025 | Flood | — | — | — | — | — | County |
| 28 Jun 2025 | Flash Flood | — | — | — | — | — | County |
| 16 Jun 2025 | Flood | — | — | — | — | — | County |
| 16 Jun 2025 | Flood | — | — | — | — | — | County |
| 14 Jun 2025 | Flood | — | — | — | — | — | County |
| 4 Apr 2025 | Flood | — | — | — | — | — | County |
| 4 Apr 2025 | Flood | — | — | — | — | — | County |
| 25 Mar 2023 | Flood | — | — | — | — | — | County |
| 7 Mar 2022 | Flood | — | — | — | — | — | County |
| 18 Feb 2022 | Flood | — | $5K | — | — | — | County |
| 17 Feb 2022 | Flood | — | — | — | — | — | County |
| 18 Jun 2021 | Flash Flood | — | $50K | — | — | — | County |
| 18 Jun 2021 | Flash Flood | — | — | — | — | — | County |
| 18 Jun 2021 | Flash Flood | — | $20K | — | — | — | County |
| 30 Jun 2020 | Flood | — | $500 | — | — | — | County |
| 3 Jun 2020 | Flood | — | — | — | — | — | County |
| 19 May 2020 | Flood | — | — | — | — | — | County |
| 18 May 2020 | Flood | — | — | — | — | — | County |
| 20 Mar 2020 | Flash Flood | — | — | — | — | — | County |
| 20 Mar 2020 | Flash Flood | — | $25K | — | — | — | County |
| 20 Mar 2020 | Flood | — | — | — | — | — | County |
| 20 Mar 2020 | Flash Flood | — | $4K | — | — | — | County |
| 3 Jul 2019 | Flood | — | — | — | — | — | County |
| 3 Jul 2019 | Flood | — | — | — | — | — | County |
| 27 May 2019 | Flash Flood | — | — | — | — | — | County |
| 7 Feb 2019 | Flood | — | — | — | — | — | County |
| 1 Nov 2018 | Flood | — | — | — | — | — | County |
| 10 Aug 2018 | Flood | — | — | — | — | — | County |
| 10 Aug 2018 | Flood | — | — | — | — | — | County |
| 21 Jun 2018 | Flood | — | — | — | — | — | County |
| 19 Jun 2018 | Flood | — | — | — | — | — | County |
| 19 Jun 2018 | Flood | — | — | — | — | — | County |
| 8 Jun 2018 | Flood | — | — | — | — | — | County |
| 3 Apr 2018 | Flood | — | — | — | — | — | County |
| 3 Apr 2018 | Flood | — | — | — | — | — | County |
| 24 Feb 2018 | Flood | — | — | — | — | — | County |
| 5 Nov 2017 | Flood | — | — | — | — | — | County |
| 5 Nov 2017 | Flood | — | — | — | — | — | County |
| 23 Jun 2017 | Flash Flood | — | — | — | — | — | County |
| 23 Jun 2017 | Flood | — | — | — | — | — | County |
| 23 Jun 2017 | Flood | — | — | — | — | — | County |
| 13 Jun 2017 | Flash Flood | — | — | — | — | — | County |
| 28 Aug 2016 | Flash Flood | — | — | — | — | — | County |
| 21 May 2014 | Flood | — | — | — | — | — | County |
| 21 May 2014 | Flood | — | — | — | — | — | County |
| 21 May 2014 | Flash Flood | — | $2K | — | — | — | County |
| 21 May 2014 | Flash Flood | — | $1K | — | — | — | County |
| 22 Dec 2013 | Flash Flood | — | $1K | — | — | — | County |
| 21 Sep 2013 | Flood | — | — | — | — | — | County |
| 6 Jul 2013 | Flash Flood | — | $1K | — | — | — | County |
| 16 Mar 2012 | Flood | — | — | — | — | — | County |
| 5 Dec 2011 | Flood | — | $1K | — | — | — | County |
| 20 Apr 2011 | Flash Flood | — | $2K | — | — | — | County |
| 19 Apr 2011 | Flash Flood | — | $15K | — | — | — | County |
| 3 Jun 2008 | Flash Flood | — | $8K | — | — | — | County |
| 19 Mar 2008 | Flood | — | $15K | — | — | — | County |
| 14 Mar 2007 | Flood | — | $4K | — | — | — | County |
| 2 Mar 2007 | Flood | — | $3K | — | — | — | County |
| 30 Jun 2005 | Flood | — | — | — | — | — | Forecast zone |
| 11 Jan 2005 | Flood | — | $10K | — | — | — | Forecast zone |
| 5 Jan 2005 | Flood | — | $10K | — | — | — | Forecast zone |
| 28 Aug 2004 | Flood | — | — | — | — | — | Forecast zone |
| 11 Jun 2004 | Flood | — | — | — | — | — | Forecast zone |
| 27 May 2004 | Flood | — | — | — | — | — | Forecast zone |
| 27 May 2004 | Flood | — | — | — | — | — | Forecast zone |
| 4 Jan 2004 | Flood | — | — | — | — | — | Forecast zone |
| 4 Jan 2004 | Flood | — | — | — | — | — | Forecast zone |
| 2 Sep 2003 | Flood | — | — | — | — | — | Forecast zone |
| 1 Sep 2003 | Flood | — | — | — | — | — | Forecast zone |
| 31 Jul 2003 | Flood | — | — | — | — | — | Forecast zone |
| 31 Jul 2003 | Flood | — | — | — | — | — | Forecast zone |
| 16 Jun 2003 | Flood | — | $30K | — | — | — | Forecast zone |
| 10 Nov 2002 | Flood | — | — | — | — | — | Forecast zone |
| 27 Sep 2002 | Flood | — | — | — | — | — | Forecast zone |
| 27 Jul 2002 | Flood | — | $8K | — | — | — | Forecast zone |
| 13 Jun 2002 | Flood | — | — | — | — | — | Forecast zone |
| 5 Jun 2002 | Flood | — | — | — | — | — | Forecast zone |
| 17 Dec 2001 | Flood | — | — | — | — | — | Forecast zone |
| 11 Jun 2001 | Flash Flood | — | $5K | — | — | — | County |
| 18 May 2001 | Flash Flood | — | $50K | — | — | — | County |
| 11 Apr 2001 | Flash Flood | — | $2K | — | — | — | County |
| 16 Jun 2000 | Flash Flood | — | $1K | — | — | — | County |
| 16 Jun 2000 | Flash Flood | — | $3K | — | — | — | County |
| 7 May 1998 | Flash Flood | — | — | — | — | — | County |
| 16 Apr 1998 | Flash Flood | — | — | — | — | — | County |
| 29 Apr 1996 | Flash Flood | — | $3K | — | — | — | County |
Questions and answers
How many flood events has Greene County had?
96 events in the NCEI Storm Events record between 1950 and 2026. Reporting of floods and flash floods became far more complete after 1996, so early decades undercount.
When was the last recorded flood event in Greene County?
27 May 2026 (Flood). Records reach NCEI about 120 days after the month ends.
What was the most damaging flood event recorded in Greene County?
The flash flood of 18 May 2001, with property damage estimated by NCEI at $50K.
How does Greene County compare with Ohio for flood?
23.2 events per 100 square miles against 16.6 statewide; the county holds 96 of the state's 6,794 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 Flood hub and the county page.