I think she really did mean ‘casual’ tornadoes. Which there is nothing wrong with her phrasing, as she meant to say that they’re regularly occurring and are now the norm.
Regardless, she is still wrong, since tornadoes occurred randomly and in just about every part of the U.S., and they’ve been regularly occurring ever since “weather” became a thing on the planet.
I would love to see this no wit debate bastardi on this issue as his numbers contradict her opinion.