I had a tornado go through the lawn between my house and the one next door to me 3 years ago. It tore the chimney off my neighbors house, and ripped up the tree in my yard, but thats about it... we were lucky.
When my dad was little though (not even a year) a tornado came through (they were out of town luckily) and ruined everything. Don't have any baby picutres of my dad, or and of my aunts or uncles, and a lot of family keepsakes belonging to my great-grandma were lost too.