Thunderstorm Wind — Clay, South Dakota

2025-07-07 · near Westerville, Clay, South Dakota

Event narrative

A wind gust was estimated around 60 mph at the intersection of 455th Avenue and 306th Street.

Wider weather episode

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.

View location on OpenStreetMap → (42.9500, -97.1000)

Source: NOAA Storm Events Database, event_id 1282927. Narrative written by the NWS forecast office that issued the report.