Tornadoes are one of my biggest fears. I grew up in an area that didn't have them, and watching tv coverage of them growing up made a lasting impression.
We live in Michigan now, and so are on the edge of the alley, and last year one hit near here. It was not that bad, but when the sirens when off I almost shit myself. I had to drive *toward* the storm because my class was not canceled and I needed to do a presentation, and I don't think I have ever had to talk myself down from a panic attack like that. I just cannot imagine the hell that is the fist of god just punching your town.
Stay safe.