Having been the coordonator of research for RONA; here in Canada, during their Autoconstruction Project I recommend: folks living in Tornado zones or high fire risk regions should look at fireproof,semi-inground, bermed houses. Architect Winkleman of Nova Scotia created a great design for out autoconstruction students. Also; Least cost air-crete domes built into 10-20 degree slopes are also and option. Bucky Fuller's first Geodesic Domes were the least damaged after major hurricanes. The Inuit passed this build Round knowledge down to the generations after facing severy Tundra winds in the Arctic. If you are living on a concrete slab. create a safe room with steel- re-enforced concrete walls or a survival egg shaped capsule ; bolted into the slab which the family can jump into when an F3 is coming towards town. meanwhile hurricane tie everything that can fly!
