> 1,000 sq mi is about 640,000 acres, so that's .0000015 tornadoes per year per acre. If I've got my math right, that's about a 99.9% chance that your 1 acre pl

> 1,000 sq mi is about 640,000 acres, so that's .0000015 tornadoes per year per acre. If I've got my math right, that's about a 99.9% chance that your 1 acre plot will not be hit by a tornado in 1000 years I appreciate your attempt to come up with realistic numbers, but you are making the assumption that each tornado only affects a single acre. As discussed in the article you linked, if a tornado touches down, it frequently causes destruction for a path of several miles, making this a faulty assumption.