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Flood in Decatur County, Tennessee
46 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.
Decatur County, Tennessee, has 46 flood events in the NCEI record since 1950, with at least one in 17 different years.
May is the busiest month, with 10 of the recorded events. The last 20 years account for 34 events against 12 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 1% of the 4,414 flood events recorded in Tennessee; its 13.8 per 100 square miles compares with 10.7 statewide.
Compared with Tennessee
| Measure | Decatur County | Tennessee | US |
|---|---|---|---|
| Flood events since 1950 | 46 | 4,414 | 183,559 |
| Per 100 square miles | 13.8 | 10.7 | 5.2 |
| Per 10,000 residents | 40.4 | 6.3 | 5.5 |
| Deaths recorded | 0 | 121 | 2,961 |
| Busiest month | May | February | June |
By year
Seasonality
2Feb
0Mar
7Apr
3May
10Jun
4Jul
8Aug
4Sep
3Oct
0Nov
1Dec
4
Recorded events
All 46 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 |
|---|---|---|---|---|---|---|---|
| 3 Apr 2025 | Flash Flood | — | — | — | — | — | County |
| 4 Jul 2023 | Flash Flood | — | — | — | — | — | County |
| 4 Jul 2023 | Flash Flood | — | — | — | — | — | County |
| 27 Mar 2021 | Flash Flood | — | — | — | — | — | County |
| 27 Mar 2021 | Flash Flood | — | — | — | — | — | County |
| 27 Jun 2016 | Flash Flood | — | — | — | — | — | County |
| 7 Jun 2014 | Flash Flood | — | — | — | — | — | County |
| 2 Sep 2013 | Flash Flood | — | — | — | — | — | County |
| 27 Apr 2013 | Flash Flood | — | — | — | — | — | County |
| 13 Jan 2013 | Flash Flood | — | — | — | — | — | County |
| 3 Jun 2012 | Flash Flood | — | — | — | — | — | County |
| 21 Jun 2011 | Flash Flood | — | — | — | — | — | County |
| 18 Aug 2010 | Flash Flood | — | — | — | — | — | County |
| 26 Jul 2010 | Flash Flood | — | — | — | — | — | County |
| 14 May 2010 | Flash Flood | — | — | — | — | — | County |
| 1 May 2010 | Flash Flood | — | $4.0M | — | — | — | County |
| 8 Dec 2009 | Flash Flood | — | — | — | — | — | County |
| 18 Sep 2009 | Flash Flood | — | — | — | — | — | County |
| 20 Aug 2009 | Flash Flood | — | — | — | — | — | County |
| 29 Jul 2009 | Flash Flood | — | — | — | — | — | County |
| 15 Jul 2009 | Flash Flood | — | $300K | — | — | — | County |
| 5 Jul 2009 | Flash Flood | — | — | — | — | — | County |
| 16 May 2009 | Flash Flood | — | — | — | — | — | County |
| 6 May 2009 | Flash Flood | — | — | — | — | — | County |
| 3 May 2009 | Flash Flood | — | — | — | — | — | County |
| 2 May 2009 | Flash Flood | — | — | — | — | — | County |
| 1 May 2009 | Flash Flood | — | — | — | — | — | County |
| 10 Apr 2009 | Flash Flood | — | — | — | — | — | County |
| 24 Dec 2008 | Flash Flood | — | — | — | — | — | County |
| 9 Dec 2008 | Flash Flood | — | — | — | — | — | County |
| 25 Aug 2008 | Flash Flood | — | — | — | — | — | County |
| 27 May 2008 | Flash Flood | — | $600K | — | — | — | County |
| 26 May 2008 | Flash Flood | — | — | — | — | — | County |
| 8 Jan 2008 | Flash Flood | — | — | — | — | — | County |
| 4 Aug 2006 | Flash Flood | — | $10 | — | — | — | County |
| 29 Jul 2006 | Flash Flood | — | $25K | — | — | — | County |
| 8 Dec 2004 | Flood | — | $100K | — | — | — | Forecast zone |
| 12 May 2003 | Flood | — | $10K | — | — | — | Forecast zone |
| 26 Sep 2002 | Flash Flood | — | $1K | — | — | — | County |
| 12 Jul 2002 | Flash Flood | — | $1K | — | — | — | County |
| 17 Mar 2002 | Flash Flood | — | $5K | — | — | — | County |
| 29 Nov 2001 | Flood | — | $5K | — | — | — | Forecast zone |
| 5 Mar 1997 | Flash Flood | — | — | — | — | — | County |
| 2 Mar 1997 | Flash Flood | — | — | — | — | — | County |
| 2 Mar 1997 | Flash Flood | — | $150K | — | — | — | County |
| 1 Mar 1997 | Flash Flood | — | — | — | — | — | County |
Questions and answers
How many flood events has Decatur County had?
46 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 Decatur County?
3 Apr 2025 (Flash Flood). Records reach NCEI about 120 days after the month ends.
What was the most damaging flood event recorded in Decatur County?
The flash flood of 1 May 2010, with property damage estimated by NCEI at $4.0M.
How does Decatur County compare with Tennessee for flood?
13.8 events per 100 square miles against 10.7 statewide; the county holds 46 of the state's 4,414 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.