Thunderstorm Wind in Brown County, South Dakota

Thunderstorm Wind June 15, 2026 · Brown 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

A resident in Groton estimated 60 mph thunderstorm wind gusts knocked over a dumpster.

The wider storm

Storms produced strong winds across portions of central, north central and northeast South Dakota during the afternoon of June 15th. A peak wind gust of 69 mph was recorded on the South Dakota Department of Transportation (SDDOT) mesonet station 5 miles west of Seneca (Potter county), with a 68 mph gust recorded on the SDDOT mesonet station in Waubay (Day county). Rapidly decaying showers also generated strong winds in Lyman and Buffalo counties, with a 66 mph gust recorded on the SDDOT station 5 miles north of Reliance and a 64 mph gust on the SDDOT station 3 miles north of Gann Valley.

Began near Groton (45.4500, -98.1000).

Source: NOAA Storm Events Database, event 1332925. Narratives are written by the National Weather Service forecast office that issued the report.

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