Thunderstorm Wind — Yankton, South Dakota

2025-07-07 · near (ykn)chan Gurney Arp, Yankton, South Dakota

Event narrative

Severe wind gusts began at 1739 CST with a peak gust of 68 mph at 1745 CST.

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 → (42.9200, -97.3700)

Source: NOAA Storm Events Database, event_id 1282925. Narrative written by the NWS forecast office that issued the report.