1+ day, 20+ hour ago  (330+ words) Houghton Mostly Cloudy 10" Iron Mountain Cloudy 18" Ice dams formations on a gabled roof ISHPEMING, Mich. (WZMQ) " Heavy snow and ice buildup have already caused roofs to collapse at the Westwood Mall in Marquette and the VFW in Ishpeming. The freeze-thaw…...