On Wednesday, June 19, 2019, at approximately 9:49 a.m., PDT, westbound Union Pacific Railroad Company (UP) freight train MNPRV-17 (Train 1) derailed 27 cars at approximately Milepost (MP) 611.25 on UP's Lakeside Subdivision. The derailment occurred approximately 5 miles east of Wells, Nevada, while Train 1 was traveling 38 mph on Main Track No. 1, while descending a 1-percent grade. The train consisted of three locomotives on the head-end and two mid-train Distributed Power Units (DPU), 120 loads, and 56 empties, totaling 16,501 trailing tons; it was 11,866 feet in length.