Hail in Dewey County, South Dakota

Hail July 26, 2025 · Dewey County, South Dakota

1.5 in

Hail diameter

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

What the National Weather Service wrote

Ping-Pong ball-sized hail was reported.

The wider storm

Scattered thunderstorms developed in the late afternoon and evening, producing large hail and high winds. A peak gust of 76 mph measured at the South Dakota Department of Transportation Road Weather Information Station (SDDOT RWIS) 17 miles west of the town of Polo, and 72 mph on the SDDOT RWIS 9 miles north northwest of Vivian.

As storms dissipated they generated several heat bursts in which temperatures increased by 3 to 8 degrees and dewpoints dropped by as much as 20 degrees. There were multiple reports of strong winds associated with these heat bursts across central and north-central South Dakota.

Began near Promise (45.3300, -100.6300).

Source: NOAA Storm Events Database, event 1268681. Narratives are written by the National Weather Service forecast office that issued the report.

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