States › Mississippi › Harrison County › Flood
Flood in Harrison County, Mississippi
99 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.
Harrison County, Mississippi, has 99 flood events in the NCEI record since 1950, with at least one in 23 different years.
June is the busiest month, with 29 of the recorded events. The last 20 years account for 84 events against 15 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 2.6% of the 3,812 flood events recorded in Mississippi; its 17.3 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 | Harrison County | Mississippi | US |
|---|---|---|---|
| Flood events since 1950 | 99 | 3,812 | 183,559 |
| Per 100 square miles | 17.3 | 8.1 | 5.2 |
| Per 10,000 residents | 4.7 | 12.9 | 5.5 |
| Deaths recorded | 1 | 26 | 2,961 |
| Busiest month | June | April | June |
By year
Seasonality
1Feb
1Mar
5Apr
20May
10Jun
29Jul
15Aug
7Sep
7Oct
3Nov
0Dec
1
Recorded events
All 99 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 |
|---|---|---|---|---|---|---|---|
| 20 Jun 2026 | Flash Flood | — | — | — | — | — | County |
| 19 Jun 2026 | Flash Flood | — | $50K | — | — | — | County |
| 19 Jun 2026 | Flash Flood | — | $30K | — | — | — | County |
| 18 Jun 2026 | Flash Flood | — | — | — | — | — | County |
| 18 Jun 2026 | Flash Flood | — | — | — | — | — | County |
| 15 Jun 2026 | Flash Flood | — | — | — | — | — | County |
| 15 Jun 2026 | Flash Flood | — | — | — | — | — | County |
| 15 Jun 2026 | Flash Flood | — | — | — | — | — | County |
| 15 Jun 2026 | Flash Flood | — | — | — | — | — | County |
| 15 Jun 2026 | Flash Flood | — | — | — | — | — | County |
| 6 Jun 2026 | Flash Flood | — | — | — | — | — | County |
| 6 Jun 2026 | Flash Flood | — | — | — | — | — | County |
| 6 Jun 2026 | Flash Flood | — | — | — | — | — | County |
| 6 Jun 2026 | Flash Flood | — | — | — | — | — | County |
| 6 Jun 2026 | Flash Flood | — | — | — | — | — | County |
| 6 Jun 2026 | Flash Flood | — | — | — | — | — | County |
| 22 May 2026 | Flash Flood | — | — | — | — | — | County |
| 22 May 2026 | Flash Flood | — | — | — | — | — | County |
| 25 Apr 2026 | Flash Flood | — | — | — | — | — | County |
| 25 Apr 2026 | Flash Flood | — | — | — | — | — | County |
| 1 Jul 2025 | Flash Flood | — | $225K | — | — | — | County |
| 1 Jul 2025 | Flash Flood | — | — | — | — | — | County |
| 1 Jul 2025 | Flash Flood | — | $10K | — | — | — | County |
| 9 Jun 2025 | Flash Flood | — | — | — | — | — | County |
| 11 Sep 2024 | Flash Flood | — | $30K | — | — | — | County |
| 20 Jun 2023 | Flash Flood | — | $10K | — | — | — | County |
| 20 Jun 2023 | Flood | — | — | — | — | — | County |
| 25 Aug 2022 | Flash Flood | — | — | — | — | — | County |
| 25 Aug 2022 | Flash Flood | — | — | — | — | — | County |
| 30 Jun 2022 | Flash Flood | — | — | — | — | — | County |
| 30 Jun 2022 | Flash Flood | — | — | — | — | — | County |
| 4 Oct 2021 | Flash Flood | — | $25K | — | — | — | County |
| 17 Sep 2021 | Flash Flood | — | — | — | — | — | County |
| 17 Sep 2021 | Flash Flood | — | $20K | — | — | — | County |
| 17 Sep 2021 | Flash Flood | — | — | — | — | — | County |
| 15 Sep 2021 | Flash Flood | — | — | — | — | — | County |
| 6 Jul 2021 | Flash Flood | — | — | — | — | — | County |
| 6 Jul 2021 | Flash Flood | — | $3K | — | — | — | County |
| 6 Jul 2021 | Flash Flood | — | — | — | — | — | County |
| 6 Jul 2021 | Flash Flood | — | $30K | — | — | — | County |
| 6 Jul 2021 | Flash Flood | — | $30K | — | — | — | County |
| 6 Jul 2021 | Flood | — | $45K | — | — | — | County |
| 21 Jun 2021 | Flash Flood | — | — | — | — | — | County |
| 21 Jun 2021 | Flash Flood | — | — | — | — | — | County |
| 21 Jun 2021 | Flash Flood | — | $5K | — | — | — | County |
| 15 Apr 2021 | Flash Flood | — | — | — | — | — | County |
| 12 May 2019 | Flood | — | — | — | — | — | County |
| 16 Jul 2018 | Flash Flood | — | — | — | — | — | County |
| 14 Apr 2018 | Flash Flood | — | — | — | — | — | County |
| 14 Apr 2018 | Flash Flood | — | — | — | — | — | County |
| 14 Apr 2018 | Flash Flood | — | — | — | — | — | County |
| 14 Apr 2018 | Flash Flood | — | — | — | — | — | County |
| 14 Apr 2018 | Flash Flood | — | — | — | — | — | County |
| 14 Apr 2018 | Flood | — | — | — | — | — | County |
| 22 Oct 2017 | Flash Flood | — | — | — | — | — | County |
| 6 Aug 2017 | Flash Flood | — | — | — | — | — | County |
| 29 Jun 2017 | Flash Flood | — | — | — | — | — | County |
| 29 Jun 2017 | Flash Flood | — | — | — | — | — | County |
| 22 Jun 2017 | Flood | — | — | — | — | — | County |
| 21 Jun 2017 | Flood | — | — | — | — | — | County |
| 11 Aug 2016 | Flash Flood | — | $270K | — | — | — | County |
| 17 May 2016 | Flash Flood | — | — | — | — | — | County |
| 28 Apr 2016 | Flash Flood | — | — | — | — | — | County |
| 25 Oct 2015 | Coastal Flood | — | — | — | — | — | Forecast zone |
| 16 May 2015 | Flash Flood | — | — | — | — | — | County |
| 15 Apr 2015 | Flash Flood | — | — | — | — | — | County |
| 15 Apr 2015 | Flash Flood | — | — | — | — | — | County |
| 14 Apr 2015 | Flash Flood | — | — | — | — | — | County |
| 12 Apr 2015 | Flash Flood | — | — | — | — | — | County |
| 12 Apr 2015 | Flash Flood | — | — | — | — | — | County |
| 14 May 2014 | Flash Flood | — | — | — | — | — | County |
| 9 May 2014 | Flash Flood | — | — | — | — | — | County |
| 29 Apr 2014 | Flash Flood | — | — | — | — | — | County |
| 29 Apr 2014 | Flash Flood | — | — | — | — | — | County |
| 18 Aug 2013 | Flash Flood | — | $100K | — | — | — | County |
| 6 Jul 2013 | Flash Flood | — | $10K | — | — | — | County |
| 1 May 2013 | Flash Flood | — | $100K | — | — | — | County |
| 25 Feb 2013 | Flash Flood | — | — | — | — | — | County |
| 29 Aug 2012 | Flash Flood | — | $500K | — | — | — | County |
| 22 Mar 2012 | Flash Flood | — | — | — | — | — | County |
| 21 Mar 2012 | Flash Flood | — | — | — | — | — | County |
| 18 Jul 2011 | Flash Flood | — | — | — | — | — | County |
| 12 Dec 2009 | Flash Flood | — | — | — | — | — | County |
| 28 Mar 2009 | Flash Flood | — | $750K | — | 1 | — | County |
| 1 Apr 2005 | Flash Flood | — | $50K | — | — | — | County |
| 1 Apr 2005 | Flood | — | $100K | — | — | — | Forecast zone |
| 1 Jul 2003 | Flood | — | $150K | — | — | — | Forecast zone |
| 26 Sep 2002 | Flash Flood | — | — | — | — | — | County |
| 25 Aug 2002 | Flood | — | — | — | — | — | County |
| 19 Sep 2001 | Flood | — | — | — | — | — | County |
| 11 Jun 2001 | Flash Flood | — | $750K | — | — | — | County |
| 8 Mar 1998 | Flood | — | — | — | — | — | Forecast zone |
| 7 Mar 1998 | Flash Flood | — | — | — | — | — | County |
| 7 Jan 1998 | Flood | — | — | — | — | — | County |
| 26 Jul 1997 | Flood | — | — | — | — | — | County |
| 19 May 1997 | Flood | — | — | — | — | — | County |
| 8 Jul 1996 | Flood | — | $100K | — | — | — | County |
| 28 May 1996 | Flood | — | — | — | — | — | County |
| 15 Apr 1996 | Flood | — | — | — | — | — | County |
Questions and answers
How many flood events has Harrison County had?
99 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 Harrison County?
20 Jun 2026 (Flash Flood). Records reach NCEI about 120 days after the month ends.
What was the most damaging flood event recorded in Harrison County?
The flash flood of 11 Jun 2001, with property damage estimated by NCEI at $750K.
How does Harrison County compare with Mississippi for flood?
17.3 events per 100 square miles against 8.1 statewide; the county holds 99 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.