Thunderstorm Wind in Union County, South Dakota

Thunderstorm Wind July 7, 2025 · Union County, South Dakota

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

Thunderstorm winds damaged trees around Elk Point, which led to sporadic power outages.

The wider storm

Thunderstorms fired along a convergence zone pushing southeast across southeast South Dakota during the afternoon, with instability as high as 1500-2500 J/kg and modest effective shear of 25 to 35 knots. While storm shear and cold pool dynamics remained balanced, isolated large hail and damaging wind gusts gradually transitioned to the latter before weakening during the mid-evening hours.

Began near Elk Pt (42.6900, -96.6800).

Source: NOAA Storm Events Database, event 1282930. Narratives are written by the National Weather Service forecast office that issued the report.

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