Scattered strong to severe storms develop during the late afternoon hours on 8/18. The environment featured a gradient in instability with weaker instability across the western Midlands (mixed layer CAPE around 1000 J/kg) to stronger instability across the central and eastern Midlands (mixed layer CAPE around 2000-2500 J/kg) with sufficient effective bulk shear around 30-35 knots.
Every event with a place to put it. Tap one for its entry below.
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.
The episode as NWS CAE wrote it up.
Scattered strong to severe storms develop during the late afternoon hours on 8/18. The environment featured a gradient in instability with weaker instability across the western Midlands (mixed layer CAPE around 1000 J/kg) to stronger instability across the central and eastern Midlands (mixed layer CAPE around 2000-2500 J/kg) with sufficient effective bulk shear around 30-35 knots. There was a gradient in moisture with Precipitable water values ranging from 1.5 inches to 1.8 inches in the eastern counties. Some drier air aloft was moving into the area with some downsloping winds at 850/700mb as the upper trough axis approached. The best forcing remained to our north over VA/NC.
The Columbia radar (KCAE), 92 km away, was scanning. The volume nearest the first event began at 21:52 UTC.
3 thunderstorm wind, 1 hail. Local standard time, as filed.
Lancaster county dispatch reported multiple trees down within the city limits.
Lancaster county 911 reported 1 inch hail at their location. Time estimated by radar.
Lancaster county 911 reported multiple trees down on powerlines along Flat Creek Rd. Time estimated by radar.
Bamberg County dispatch reported a tree down over Erhardt Road near the intersection of Tabernacle Road. Time estimated by radar.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in South Carolina in 2024Every state in 2024This day in weather historyWarnings in South Carolina, August 2024
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 2026-10-01. Each event’s entry at NCEI: 1194204, 1194205, 1194206, 1194251.