Dave,
Is your land flat or is there some relief as in the potential for a walk in reinforced shelter?
If that's not an option I think I'd be building a concrete reinforced safe room in the center of any newly constructed home in tornado prone areas. Probably not cheap but how much are lives worth?
I'm considering something up here even though I do have a basement that is mostly underground.
Basements are nice......until your house takes a direct hit from a tornado and caves in on top of you. I'll stick with my reinforced concrete storm shelter that's EF-5 rated.
