Thunderstorm Wind in Sumter County, South Carolina

Thunderstorm Wind June 18, 2026 · 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

Trained spotter reported multiple trees, including a large oak, down around Catchall Rd.

The wider storm

The remnants of Tropical Storm Arthur moved into the southeastern US which led to a significant surge of moisture into the area. The air mass became highly unstable in the afternoon and evening with MLCAPE values around 2500 J/kg. While there were isolated severe storms during the afternoon, widespread storms developed along a surface trough in Georgia with strong low level convergence which led to a line that moved through the area producing damaging wind gusts during the evening.

Began near Dalzell (34.0200, -80.5200).

Source: NOAA Storm Events Database, event 1336379. Narratives are written by the National Weather Service forecast office that issued the report.

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