Hail in Yankton County, South Dakota

Hail June 27, 2025 · Yankton County, South Dakota

0.75 in

Hail diameter

Where the report was made, with tornadoes recorded within 15 miles over the years.

The wider storm

Thunderstorms developed along a nearly stationary pre-frontal boundary during the early evening across south central South Dakota. As cold pool development forced storms eastward off the initiating boundary into an environment with appreciable DCAPE and deep-layer shear of 40 to 50 knots, thunderstorms organized into a small bowing segment, which plowed east and southeast with up to nearly 90 mph winds. After several hours, storms moved into a less favorable environment with both lesser shear and instability toward the James River Valley and weakened.

Began near Yankton (42.8900, -97.3900).

Source: NOAA Storm Events Database, event 1278528. Narratives are written by the National Weather Service forecast office that issued the report.

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