A flash flood in Arizona's Grand Canyon National Park on Saturday left an estimated 15 people missing and forced the evacuation of at least 62 others, according to the National Park Service. The flooding struck Bright Angel Canyon and the Phantom Ranch area after a series of storms passed through the canyon. It destroyed footbridges and severely damaged infrastructure. The Park Service said an earlier working estimate had put the number of missing or unaccounted-for people at 20. No injuries had been reported as of Sunday afternoon, and search and rescue efforts were continuing. More evacuations were planned from Cottonwood Campground and Phantom Ranch. The flooding caused extensive damage across Bright Angel Canyon, with nearly all footbridges over Bright Angel Creek affected.