South Carolina, 2020Flash Flood in South Carolina, August 15, 2020
August 15, 2020 · NWS CHS · 1 event in 1 county or zone
A strong short wave rounding the eastern edge of a low pressure trough and outflow boundary interactions from previous thunderstorm activity within a warm and moist airmass led to a period of heavy rainfall and flash flooding around Summerville, South Carolina.
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- Deaths
- 0
- Injuries
- 0
- Property damage
- $50,000
- Crop damage
- None recorded
- Events
- 1
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
A strong short wave rounding the eastern edge of a low pressure trough and outflow boundary interactions from previous thunderstorm activity within a warm and moist airmass led to a period of heavy rainfall and flash flooding around Summerville, South Carolina.
Flash Flood, Dorchester
- When
- August 15, 4:00 PM EST to 8:00 PM EST
- Where
- Dorchester County, 0.09 mi NW of Summerville to 0.17 mi NNE of Summerville
- Cause
- Heavy Rain
- Property damage
- $50,000
- Reported by
- Broadcast Media
- Coordinates
- 33.021, -80.181
The media reported flooding to a coffee shop near the intersection of East 3rd North Street and North Main Street. The coffee shop warehouse had around 8 inches of water in the building and around 4 inches of water inside the main customer building, destroying most flooring and some wall/cabinet wood panels. Video from social media also indicated flooding along Richardson Creek entering a few homes near the intersection of Central Avenue and South Pine Street, one of which appeared to have 1 to 2 feet of water inside exterior walls.
- Flash Flood
- Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
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NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 918010.