SIOUX FALLS, S.D. (KELO) -- High winds are impacting parts of KELOLAND. Photos from numerous agencies show downed powerlines and tipped semis. Below is from the Pennington County Sheriff's office. Custer County Sheriff posted downed trees and semis. Along with the above, Black Hills Energy is report ing major power outages, impacting at least 1,000 homes. [...] ...read more read less