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Flood in Alcorn County, Mississippi
40 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 40 flood events in Alcorn County, Mississippi, between 1950 and 2026, spread over 22 years.
May is the busiest month, with 7 of the recorded events. The last 20 years account for 22 events against 18 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 1% of the 3,812 flood events recorded in Mississippi; its 10.0 per 100 square miles compares with 8.1 statewide.
NCEI attributes 1 death in the county to floods and flash floods.
Compared with Mississippi
| Measure | Alcorn County | Mississippi | US |
|---|---|---|---|
| Flood events since 1950 | 40 | 3,812 | 183,559 |
| Per 100 square miles | 10.0 | 8.1 | 5.2 |
| Per 10,000 residents | 11.6 | 12.9 | 5.5 |
| Deaths recorded | 1 | 26 | 2,961 |
| Busiest month | May | April | June |
By year
Seasonality
3Feb
3Mar
3Apr
4May
7Jun
5Jul
3Aug
3Sep
5Oct
2Nov
2Dec
0
Recorded events
All 40 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 |
|---|---|---|---|---|---|---|---|
| 5 Apr 2025 | Flash Flood | — | — | — | — | — | County |
| 10 May 2023 | Flash Flood | — | — | — | — | — | County |
| 13 Apr 2022 | Flash Flood | — | — | — | — | — | County |
| 2 Jun 2021 | Flash Flood | — | — | — | — | — | County |
| 17 Mar 2021 | Flash Flood | — | $20K | — | — | — | County |
| 12 Sep 2020 | Flash Flood | — | $1K | — | — | — | County |
| 22 Feb 2019 | Flash Flood | — | — | — | — | — | County |
| 9 Jun 2014 | Flash Flood | — | — | — | — | — | County |
| 31 Mar 2012 | Flash Flood | — | — | — | — | — | County |
| 28 Jun 2011 | Flash Flood | — | — | — | — | — | County |
| 25 May 2011 | Flash Flood | — | — | — | — | — | County |
| 27 Apr 2011 | Flash Flood | — | — | — | — | — | County |
| 18 Aug 2010 | Flash Flood | — | — | — | — | — | County |
| 26 Jun 2010 | Flash Flood | — | — | — | — | — | County |
| 2 May 2010 | Flash Flood | — | $4.5M | — | 1 | — | County |
| 1 May 2010 | Flash Flood | — | — | — | — | — | County |
| 24 Apr 2010 | Flash Flood | — | — | — | — | — | County |
| 18 Sep 2009 | Flash Flood | — | — | — | — | — | County |
| 17 Sep 2009 | Flash Flood | — | — | — | — | — | County |
| 26 Jul 2008 | Flash Flood | — | — | — | — | — | County |
| 10 Jan 2008 | Flash Flood | — | — | — | — | — | County |
| 14 Nov 2007 | Flash Flood | — | $20K | — | — | — | County |
| 25 Sep 2005 | Flash Flood | — | $1K | — | — | — | County |
| 6 Aug 2005 | Flash Flood | — | $1K | — | — | — | County |
| 31 Jul 2004 | Flash Flood | — | $20K | — | — | — | County |
| 15 Feb 2004 | Flash Flood | — | $1K | — | — | — | County |
| 6 May 2003 | Flash Flood | — | $10K | — | — | — | County |
| 21 Feb 2003 | Flash Flood | — | $1K | — | — | — | County |
| 26 Sep 2002 | Flash Flood | — | $1K | — | — | — | County |
| 23 Jan 2002 | Flash Flood | — | $5K | — | — | — | County |
| 28 Nov 2001 | Flood | — | $75K | — | — | — | Forecast zone |
| 13 Oct 2001 | Flash Flood | — | $1.0M | — | — | — | County |
| 10 Aug 2001 | Flash Flood | — | $5K | — | — | — | County |
| 5 May 1999 | Flood | — | $1K | — | — | — | County |
| 22 Jan 1999 | Flood | — | $1K | — | — | — | County |
| 14 Jul 1998 | Flood | — | $500 | — | — | — | County |
| 6 May 1998 | Flash Flood | — | $5K | — | — | — | County |
| 21 Jun 1997 | Flash Flood | — | $1K | — | — | — | County |
| 5 Mar 1997 | Flash Flood | — | $1K | — | — | — | County |
| 28 Oct 1996 | Flash Flood | — | $1K | — | — | — | County |
Questions and answers
How many flood events has Alcorn County had?
40 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 Alcorn County?
5 Apr 2025 (Flash Flood). Records reach NCEI about 120 days after the month ends.
What was the most damaging flood event recorded in Alcorn County?
The flash flood of 2 May 2010, with property damage estimated by NCEI at $4.5M; 1 death recorded.
How does Alcorn County compare with Mississippi for flood?
10.0 events per 100 square miles against 8.1 statewide; the county holds 40 of the state's 3,812 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.