A review of the 1959 investigation's evidence completed in 2015–2019 by experienced investigators from the Investigative Committee of the Russian Federation (ICRF) on request of the families confirmed the avalanche with several important details added. First of all, the ICRF investigators (one of them an experienced alpinist) confirmed that the weather on the night of the tragedy was very harsh, with wind speeds up to hurricane force, , a snowstorm and temperatures reaching . These factors weren't considered by the 1959 investigators who arrived at the scene of the accident three weeks later when the weather had much improved and any remains of the snow slide had settled and been covered with fresh snowfall. The harsh weather at the same time played a critical role in the events of the tragic night, which have been reconstructed as follows: