Large trough over the eastern US provided enough forcing and shear to force multiple severe and sub-severe thunderstorms during the evening of May 8th into the early morning hours of May 9th. Instability was sufficient to yield a couple of supercells, one of which produced severe hail near Johnston in Edgefield county.
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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.
Large trough over the eastern US provided enough forcing and shear to force multiple severe and sub-severe thunderstorms during the evening of May 8th into the early morning hours of May 9th. Instability was sufficient to yield a couple of supercells, one of which produced severe hail near Johnston in Edgefield county.
The Columbia radar (KCAE), 68 km away, was scanning. The volume nearest the first event began at 05:24 UTC.
2 hail. Local standard time, as filed.
Public report of penny sized hail between Edgefield and Johnston. Relayed by media.
Trained spotter sent pictures of at least quarter sized hail.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in South Carolina in 2025Every state in 2025This day in weather historyWarnings in South Carolina, May 2025
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 2026-09-30. Each event’s entry at NCEI: 1253598, 1253599.