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Flood in Union County, Arkansas
67 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.
Union County, Arkansas, has 67 flood events in the NCEI record since 1950, with at least one in 21 different years.
April is the busiest month, with 10 of the recorded events. The last 20 years account for 55 events against 12 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 1.2% of the 5,685 flood events recorded in Arkansas; its 6.4 per 100 square miles compares with 10.9 statewide.
Compared with Arkansas
| Measure | Union County | Arkansas | US |
|---|---|---|---|
| Flood events since 1950 | 67 | 5,685 | 183,559 |
| Per 100 square miles | 6.4 | 10.9 | 5.2 |
| Per 10,000 residents | 17.5 | 18.8 | 5.5 |
| Deaths recorded | 0 | 92 | 2,961 |
| Busiest month | April | May | June |
By year
Seasonality
3Feb
2Mar
7Apr
10May
9Jun
4Jul
10Aug
3Sep
4Oct
9Nov
1Dec
5
Recorded events
All 67 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 Sep 2025 | Flash Flood | — | — | — | — | — | County |
| 24 Sep 2025 | Flash Flood | — | — | — | — | — | County |
| 26 Apr 2025 | Flash Flood | — | — | — | — | — | County |
| 5 Apr 2025 | Flash Flood | — | — | — | — | — | County |
| 9 Apr 2024 | Flood | — | — | — | — | — | County |
| 15 Mar 2024 | Flash Flood | — | — | — | — | — | County |
| 15 Mar 2024 | Flash Flood | — | — | — | — | — | County |
| 12 Jul 2023 | Flash Flood | — | — | — | — | — | County |
| 12 Jul 2023 | Flash Flood | — | — | — | — | — | County |
| 11 May 2023 | Flash Flood | — | — | — | — | — | County |
| 2 Jan 2023 | Flash Flood | — | — | — | — | — | County |
| 2 Jan 2023 | Flash Flood | — | — | — | — | — | County |
| 2 Jan 2023 | Flash Flood | — | — | — | — | — | County |
| 3 Jul 2022 | Flash Flood | — | — | — | — | — | County |
| 3 Jul 2022 | Flash Flood | — | — | — | — | — | County |
| 3 Jul 2022 | Flash Flood | — | — | — | — | — | County |
| 3 Jul 2022 | Flash Flood | — | — | — | — | — | County |
| 3 Jul 2022 | Flash Flood | — | — | — | — | — | County |
| 3 Jul 2022 | Flash Flood | — | — | — | — | — | County |
| 3 Jul 2022 | Flash Flood | — | — | — | — | — | County |
| 9 May 2021 | Flash Flood | — | — | — | — | — | County |
| 9 May 2021 | Flash Flood | — | — | — | — | — | County |
| 12 Feb 2020 | Flood | — | — | — | — | — | County |
| 13 Apr 2019 | Flash Flood | — | — | — | — | — | County |
| 13 Apr 2019 | Flash Flood | — | — | — | — | — | County |
| 7 Apr 2019 | Flash Flood | — | — | — | — | — | County |
| 7 Apr 2019 | Flash Flood | — | — | — | — | — | County |
| 7 Apr 2019 | Flash Flood | — | — | — | — | — | County |
| 9 Mar 2016 | Flash Flood | — | — | — | — | — | County |
| 8 Mar 2016 | Flash Flood | — | — | — | — | — | County |
| 25 Dec 2015 | Flash Flood | — | — | — | — | — | County |
| 1 Jun 2013 | Flash Flood | — | — | — | — | — | County |
| 21 Mar 2012 | Flash Flood | — | — | — | — | — | County |
| 22 Aug 2010 | Flash Flood | — | — | — | — | — | County |
| 24 Dec 2009 | Flash Flood | — | — | — | — | — | County |
| 1 Nov 2009 | Flood | — | — | — | — | — | County |
| 30 Oct 2009 | Flash Flood | — | $175K | — | — | — | County |
| 29 Oct 2009 | Flash Flood | — | — | — | — | — | County |
| 29 Oct 2009 | Flash Flood | — | — | — | — | — | County |
| 29 Oct 2009 | Flash Flood | — | — | — | — | — | County |
| 29 Oct 2009 | Flash Flood | — | $50K | — | — | — | County |
| 29 Oct 2009 | Flash Flood | — | $100K | — | — | — | County |
| 13 Oct 2009 | Flash Flood | — | $20K | — | — | — | County |
| 13 Oct 2009 | Flash Flood | — | $100K | — | — | — | County |
| 12 Oct 2009 | Flood | — | $2.0M | — | — | — | County |
| 17 Sep 2009 | Flash Flood | — | — | — | — | — | County |
| 17 Sep 2009 | Flash Flood | — | — | — | — | — | County |
| 3 Jun 2009 | Flash Flood | — | $100K | — | — | — | County |
| 11 May 2009 | Flash Flood | — | — | — | — | — | County |
| 11 May 2009 | Flash Flood | — | — | — | — | — | County |
| 11 May 2009 | Flash Flood | — | — | — | — | — | County |
| 11 May 2009 | Flash Flood | — | — | — | — | — | County |
| 8 May 2009 | Flood | — | — | — | — | — | County |
| 19 Aug 2008 | Flash Flood | — | $250K | — | — | — | County |
| 4 Apr 2008 | Flash Flood | — | — | — | — | — | County |
| 28 Jun 2004 | Flash Flood | — | — | — | — | — | County |
| 27 Aug 2003 | Flash Flood | — | — | — | — | — | County |
| 19 Dec 2002 | Flash Flood | — | — | — | — | — | County |
| 12 Dec 2001 | Flash Flood | — | — | — | — | — | County |
| 12 Dec 2001 | Flash Flood | — | — | — | — | — | County |
| 14 Jun 2001 | Flash Flood | — | $175K | — | — | — | County |
| 31 May 2001 | Flash Flood | — | — | — | — | — | County |
| 27 Feb 2001 | Flash Flood | — | — | — | — | — | County |
| 16 Mar 1998 | Flash Flood | — | — | — | — | — | County |
| 4 Apr 1997 | Flash Flood | — | — | — | — | — | County |
| 2 Mar 1997 | Flash Flood | — | — | — | — | — | County |
| 31 Jul 1996 | Flash Flood | — | — | — | — | — | County |
Questions and answers
How many flood events has Union County had?
67 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 Union County?
24 Sep 2025 (Flash Flood). Records reach NCEI about 120 days after the month ends.
What was the most damaging flood event recorded in Union County?
The flood of 12 Oct 2009, with property damage estimated by NCEI at $2.0M.
How does Union County compare with Arkansas for flood?
6.4 events per 100 square miles against 10.9 statewide; the county holds 67 of the state's 5,685 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.