My TH6DXX on a 50' tower. It was a calm, sunny day, in the summer of 1970. I came home from work only to find what you see. My mom said she was next door and saw the whole think. A dust devil started out of no where, found my tower and stayed around it until this happened. You just never know. Thats me (K8CX) on the roof, taking the picture. The homeowners insurance covered it.