“…Syn-collapse seismic signals show that there was no seismic trigger for the collapse (Pandey et al, 2021;Shugar et al, 2021;Cook et al, 2021). Nearby meteorological stations and reanalysis data reveal heavy snowfall and a ∼ 5 K positive temperature anomaly in the week preceding collapse, as well as a temperature inversion in the valley (e.g., Pandey et al, 2021;Dandabathula et al, 2021;Zhou et al, 2021;Shugar et al, 2021). In the longer term, this region has warmed an estimated 0.014 (Zhou et al, 2021) to 0.033 K yr −1 (Shrestha et al, 2021) since 1980, for a total warming of 0.4 to 0.9 K over the past 3 decades.…”