You see some of that destruction and then think maybe you're not a crazy paranoid to want a safe room in a house... if not a "bunker"...
Actually, I would prefer a bunker, one that would withstand a 10+ megaton blast.

But realistically, if I were to move back to the midwest (fat chance!), I wouldn't buy a house unless it had a basement.
The April 3-4, 1974 outbreak was super bad with 148 tornadoes. I guess it's still the worst one on record, isn't it? I found another link that also tells the story along with a clip showing the Xenia tornado, interviews of some of the survivors, and some photos
http://www.ohiohistory.org/etcetera/exhibits/swio/pages/content/1974_tornado.htmSLOweather, I do hope your parents make it back from KC okay. I hear there is another chance of more severe weather around KS and OK next week.
Harry