A PDF explaining the Enhanced Fujita Scale or EF-Scale which determines the category of tornado sizes based on the findings of damage surveys. This resource could be useful for storm spotters wishing to learn more about severe weather and general meteorology.
We usually get 1 or 2 a year in my county (Massac County, Illinois). On average. Usually they’re very weak but sometimes can be strong (such as the Deadly Brookport tornado)
How about you all? How often does your area see tornadoes?
Tell us the last tornado that you actually visually witnessed?!
Myself, I saw a brief spin-up (less than a minute on the ground) in a bean field near Metropolis, Illinois last spring.
I've seen plenty of severe thunderstorms, though.
How about you? Feel free to share photos or link to videos...