I grew up in the Renaissance neighborhood just south of the university of Tulsa, and our house, like several in the neighborhood had a basement. I'm not sure how helpful it would have been in a F5 tornado.
The best solution may be an engineered reinforced safe room, that is integrally designed with the foundation of the house.
The best solution may be an engineered reinforced safe room, that is integrally designed with the foundation of the house.