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Flood in Marion County, South Carolina
32 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.
Marion County, South Carolina, has 32 flood events in the NCEI record since 1950, with at least one in 13 different years.
October is the busiest month, with 11 of the recorded events. The last 20 years account for 26 events against 6 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 1.3% of the 2,557 flood events recorded in South Carolina; its 6.5 per 100 square miles compares with 8.5 statewide.
Compared with South Carolina
| Measure | Marion County | South Carolina | US |
|---|---|---|---|
| Flood events since 1950 | 32 | 2,557 | 183,559 |
| Per 100 square miles | 6.5 | 8.5 | 5.2 |
| Per 10,000 residents | 11.1 | 4.9 | 5.5 |
| Deaths recorded | 0 | 31 | 2,961 |
| Busiest month | October | August | June |
By year
Seasonality
0Feb
1Mar
0Apr
0May
4Jun
1Jul
4Aug
3Sep
5Oct
11Nov
3Dec
0
Recorded events
All 32 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 |
|---|---|---|---|---|---|---|---|
| 8 Aug 2024 | Flash Flood | — | $1K | — | — | — | County |
| 7 Aug 2024 | Flash Flood | — | $1K | — | — | — | County |
| 3 Aug 2021 | Flash Flood | — | — | — | — | — | County |
| 28 May 2020 | Flash Flood | — | — | — | — | — | County |
| 16 Sep 2018 | Flash Flood | — | $40K | — | — | — | County |
| 16 Sep 2018 | Flash Flood | — | $50K | — | — | — | County |
| 16 Sep 2018 | Flash Flood | — | $10K | — | — | — | County |
| 8 Oct 2016 | Flash Flood | — | $150K | — | — | — | County |
| 8 Oct 2016 | Flash Flood | — | $250K | — | — | — | County |
| 8 Oct 2016 | Flash Flood | — | $200K | — | — | — | County |
| 8 Oct 2016 | Flash Flood | — | $1.0M | — | — | — | County |
| 4 Nov 2015 | Flood | — | — | — | — | — | County |
| 4 Nov 2015 | Flood | — | — | — | — | — | County |
| 1 Nov 2015 | Flash Flood | — | — | — | — | — | County |
| 10 Oct 2015 | Flash Flood | — | $10K | — | — | — | County |
| 10 Oct 2015 | Flash Flood | — | $10K | — | — | — | County |
| 10 Oct 2015 | Flash Flood | — | $10K | — | — | — | County |
| 10 Oct 2015 | Flash Flood | — | $10K | — | — | — | County |
| 10 Oct 2015 | Flash Flood | — | $10K | — | — | — | County |
| 10 Oct 2015 | Flash Flood | — | $10K | — | — | — | County |
| 10 Jul 2014 | Flood | — | — | — | — | — | County |
| 15 May 2014 | Flood | — | — | — | — | — | County |
| 15 May 2014 | Flood | — | — | — | — | — | County |
| 3 Jul 2013 | Flood | — | — | — | — | — | County |
| 1 Jul 2013 | Flood | — | — | — | — | — | County |
| 29 May 2010 | Flood | — | $1K | — | — | — | County |
| 14 Sep 2002 | Flood | — | — | — | — | — | County |
| 5 Jun 2000 | Flash Flood | — | — | — | — | — | County |
| 17 Oct 1999 | Flash Flood | — | — | — | — | — | County |
| 16 Sep 1999 | Flash Flood | — | — | — | — | — | County |
| 6 Jul 1999 | Flash Flood | — | — | — | — | — | County |
| 17 Feb 1998 | Flash Flood | — | — | — | — | — | County |
Questions and answers
How many flood events has Marion County had?
32 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 Marion County?
8 Aug 2024 (Flash Flood). Records reach NCEI about 120 days after the month ends.
What was the most damaging flood event recorded in Marion County?
The flash flood of 8 Oct 2016, with property damage estimated by NCEI at $1.0M.
How does Marion County compare with South Carolina for flood?
6.5 events per 100 square miles against 8.5 statewide; the county holds 32 of the state's 2,557 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.