I've had tornado dreams before. They're pretty terrifying from what fuzzy memories I have of them. It's usually just one tornado, though, and I'm having to outrun the darn thing. Catch is, it's difficult to keep track of as it's approaching, as there are usually obstacles (tall buildings, trees, etc.) blocking my view of it's pursuit. The scariest part of the dream occurs when I know it's very close, but it is completely obstructed from view, so I'm just guessing on what direction to run and hoping for the best.
Yet in real life, tornadoes never were a thing of fear, but fascination. We'd get 'em pretty close on occasion back when I lived down in GA. My Dad is a weather nut, and loves studying clouds, and so on. I blame him. And we weren't always smart about it either.
Growing up, more than once my Mom was heard scolding he and I, with the words: "Get back inside you morons and put the binoculars away!" during a tornado warning.
Mine started out with one tornado in the distance and as it approached, I would be trying to get my family warned...they are never with me in the dream....always somewhere across town or something, and I am not at home. I have to find a place to take shelter AND try to find a place they can go that is close to them. Then over they years, the dream progressed to more than one tornado, and not in the distance but all around me. I even had one dream where the tornado went right over the house I was in and blew out all the windows and I was hudled on the floor in the middle of the room, away from said windows, waiting for it to pass.
We saw many of them over the years, but never close enough to do damage in town. Then in 2005, one wiped out half of my home town, and my dad lived 20 miles out of town and his roof was ripped off. He slept right through it....scared me to bits because I was over here, he was over there and he was supposed to be at a family reunion in Kansas. When I heard about the tornado, I was relieved he wasn't home....until my cousin asked if I had heard from him because he never arrived at the reunion. It turned out, in true father fashion (my father, not fathers in general), he had woken up the morning he was to leave for Kansas, and realized it had been a few months since he'd had the oil changed in the pickup. He didn't want to make a long trip without changing the oil, and he didn't feel like going into town to get the oil changed, so he decided not to go. Didn't tell anyone about the change of plans, but decided to take a nap. And since the tornado knocked out power and telephone lines, no one could get ahold of him to find out if he was ok, and he slept through it, so he didn't even know there had been a tornado.

So he didn't think to let anyone know he was ok.
I DO remember my best friend and her dad out on the porch taking pictures of a tornado one year...I must have been around....12? And we were out playing, and one little girl said "Look! A tornado!" and so I went running up the street to tell my mom, who didn't believe me when I told her who spotted it. (the girl was not the brightest) But I showed her, so we grabbed the dog, and got in the car and drove to our friend's house because they had a basement. As we drove down our street, there was my best friend standing on the porch with her dad, taking pictures....my mother had some choice words about that..."idiots" being one of them. It never did reach town proper, though...just the very edge. And it ripped the cross off of the Catholic church at the edge of town. That was the only damage.