West Central Montana Avalanche Center

Warming event over past 4 days.

Calm at pit site (0-5; gusts to 10); Strong winds on ridgelines (15-20; gusts to 40)

NW Aspect; 7380 feet; 12cms overnight/ 22cms past 48hrs; After CT, we performed two PST on two suspect weak layers at 100 and 130cms deep in snowpack. Observed natural D2 avalanche on NE aspect below large cornice on heavily windloaded slope on common 400 foot avalanche path.

Wind affected location on NW aspect of 40 degree slope. Location slid on 20211221 Event. Shallow snowpack with poor structure 75cms down and to ground in HS 159cms. Currenty getting windbuffed as steep chutes get crossloaded. Though stubborn, we did get propagation at ECTP30 on weak layer nearly a meter down!