AUDUBON COUNTY, IA — October 25, 2026 16-year-old Tatum Eugene Christensen of Audubon, Iowa, died Sunday morning after a collision involving a farm tractor and a semitruck on U.S. Highway 71 in Audubon County, according to the Iowa State Patrol.
The crash occurred at approximately 11:47 a.m. south of 220th Street. Christensen was operating a John Deere tractor pulling a trailer and traveling north when a northbound Freightliner Cascadia semitruck struck the rear of the farm equipment.
The force of the collision threw Christensen from the tractor. He was pronounced dead at the scene, authorities reported.
The semitruck was driven by Kenneth Lee Mohr, 46, of Audubon. Mohr sustained serious injuries and was transported by LifeFlight helicopter to the University of Nebraska Medical Center in Omaha for treatment.
The Iowa State Patrol continues to investigate the circumstances surrounding the fatal collision. The Audubon Police Department, Audubon County Sheriff’s Office and local firefighters also responded to the scene.
