Thunderstorm Wind in Sumter County, South Carolina

Thunderstorm Wind June 13, 2025 · Sumter County, South Carolina

60 mph

Estimated gust (52 kt)

Where the report was made, with tornadoes recorded within 15 miles over the years.

What the National Weather Service wrote

Sumter sheriff office reported trees down in Dalzell area. Time estimated by radar.

The wider storm

Diurnally driven convection developed within a moist and unstable air mass characterized by CAPE values greater than 2000 J/kg with weak wind shear and precipitable water values over 2 inches and dewpoints in the lower 70s. Storms were slow moving and trained across Richland and Sumter counties resulting in flash flooding. Isolated strong storms produced severe wind damage northwest of Sumter.

Began near Dalzell (34.0333, -80.4220).

Source: NOAA Storm Events Database, event 1258995. Narratives are written by the National Weather Service forecast office that issued the report.

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