Pennington County (trfnews.i234.me): Grass Fire Burns 15 Acres Near Thief River Falls A grass fire burned an estimated 10 to 15 acres Friday afternoon in rural Pennington County, just outside Thief River Falls, Minnesota. According to the Thief River Falls Fire Department, the blaze was reported around 4:15 p.m. near 17702 Center Street East at… Continue reading Grass Fire Burns 15 Acres Near Thief River Falls