Tornado season officially begins in March and lasts through August. In an average year in the United States, more than 1,200 tornadoes are reported. May holds the most twisters, but over the years April has had more of these deadly storms. Still, they can occur at almost any time of the year and in almost every part of the country.
This is a companion discussion topic for the original entry at https://www.hagerty.com/articles-videos/Articles/2008/08/25/Tornado-Safety