June 21
- 1901 – An F4 tornado or tornado family passed near Naper and Lynch, Nebraska. Three farms were completely swept away. Ten people died in two families, with bodies carried a quarter mile (400m), and eight others were injured.
- 1969 – An F3 tornado hit Salina, Kansas, injuring 60 people. In all, 104 homes were heavily damaged or destroyed and 571 sustained minor damage. Ten businesses were also destroyed.