296
Recorded events
1
Direct deaths
3
Direct injuries
$20.2M
Property damage
Flash Flood in Charleston County, South Carolina: 296 recorded events between 1996 and 2025. The strongest on record measured 0. That places the county #11 nationally and #1 statewide for this hazard.
Decade by decade
Flash Flood in Charleston County, South Carolina: events per decade
Reporting practice changed over time — early decades are undercounted, not calmer.
The busiest decade for flash flood in Charleston County is the 2010s, when 120 of the county's 296 recorded events were logged. Comparing decades is useful for spotting active periods, but the earliest years are thin because systematic reporting for this hazard began later.
Within the Charleston County archive, flash flood makes up 21.9% of all recorded severe weather across 9 hazard types. Nationally the county sits at #11 for this hazard and #1 within South Carolina, putting it in the 99.7 percentile of all U.S. counties.
Seasonality
Events by month
Aug is the peak month for flash flood in Charleston County with 115 recorded events, while Nov is the quietest. Seasonality here is a property of the archive as much as the climate: reports cluster where population and spotter networks are densest.
Significant events
Deadliest on record
| Date | Location | Scale | Deaths | Injuries | Damage |
|---|---|---|---|---|---|
| Dec 17, 2023 | SNOWDEN | 0 | 1 | 0 | $0 |
| Aug 24, 2006 | NORTH CHARLESTON | 0 | 0 | 3 | $0 |
Most recent
Latest recorded events
| Date | Location | Magnitude | Damage |
|---|---|---|---|
| Sep 7, 2025 | CHARLESTON | 0 | $0 |
| Sep 7, 2025 | CHARLESTON | 0 | $0 |
| Sep 7, 2025 | CHARLESTON | 0 | $0 |
| Sep 7, 2025 | CITADEL | 0 | $0 |
| Sep 7, 2025 | CITADEL | 0 | $0 |
| Sep 7, 2025 | MYERS | 0 | $0 |
| Sep 7, 2025 | PIERPONT | 0 | $0 |
| Sep 7, 2025 | CHARLESTON | 0 | $0 |
| Sep 7, 2025 | CHARLESTON | 0 | $0 |
| Sep 7, 2025 | CITADEL | 0 | $0 |
Other hazards here
More from Charleston County
- Thunderstorm Wind 619
- Hail 300
- Tornado 61
- Lightning 47
From the record
What the reports say
Written by National Weather Service staff at the time of the event · public domain
Law enforcement reported several road closures near Ladson and Hanahan. The intersection of Highway 78, Interstate 26 and Ingleside Boulevard was closed with standing water estimated around 6 feet deep. Yeamans Hall Boulevard near Murray Avenue was also blocked off due to standing water around 2 feet deep. The 3400 block of Mountainbrook Avenue crossing Pepperdam Creek was blocked off due to standing water that was 2 feet deep and approximately 50 yards wide. Swift water rescues also started at the 7700 block of Palmetto Commerce Parkway around 1154 pm on the 3rd, then occurred throughout the Ladson area into the early overnight hours on the 4th.
A NWS employee, an emergency manager, law enforcement and broadcast media reported widespread flooding and roads closed due to flooding in West Ashley. Roads closed included Batten Drive, Highway 17 near the Ponderosa neighborhood, Carolina Bay Drive near the Element at Carolina Bay Apartments and the entrance to Grand Oaks subdivision where 2 cars were also found to be stalled. Ashley Grove Apartments were also reported flooded and many homes were surrounded by water along roads that were impassable. Swift water rescues and evacuations were also reported in the Shadowmoss area.
A Charleston County emergency manager and law enforcement reported numerous roads closed due to flooding in downtown Charleston. Roads closed included Hasell Street between Meeting Street and Washington Street. Interstate 26 exits to Meeting Street and East Bay Street were also closed due to flooding. Water was also reported entering homes and businesses at the intersection of Tradd Street and Council Street. Swift water rescues were also being reported by broadcast media in downtown Charleston.
Quick answers
Frequently asked
How many flash flood events are on record in Charleston County, South Carolina?
296 flash flood events are recorded in Charleston County between 1996 and 2025, causing 1 direct deaths.
What is the strongest flash flood recorded in Charleston County?
The strongest flash flood on record in Charleston County measured 0.
Where does the flash flood data for Charleston County come from?
All events come from the NOAA/NCEI Storm Events Database, the federal public-domain archive of severe weather reports. Dates are UTC, damage is as reported and not inflation-adjusted, and the most recent entries may still be revised.
Cite this page
“Flash Flood in Charleston County, South Carolina.” Severe Weather History. severeweatherhistory.com/county/south-carolina/charleston-county/flash-flood/ · Data: NOAA/NCEI, FEMA, U.S. Census — public domain.