A moderate risk of severe weather was issued by the SPC for August 24, with a significant threat for tornadoes, some of which could be strong.

The main threat area ran from North Dakota southeastward into Minnesota and northern Iowa to western Wisconsin.

Two of the tornadoes in South Dakota were rated F3 on the Fujita scale - one of which touched passed near the town of Wolsey and another near Eureka.

A wider area, from Montana to Michigan was also affected by large hail storms throughout the day.

Southern Minnesota was especially hard hit, with hail to 4.25 in (10.8 cm) diameter reported in New Prague, and $50 million in property damage sustained in and around Northfield.