Natural Avalanches, Duchess

February 7, 2021 at 8:00 AM
Name: Nathan Delmar| MWAC
Location: USFS Cabin

At 08:15, three natural avalanches were observed in Duchess. These avalanches ran well into the trees of the Lower Snowfield, almost to the level ground. The largest of these three slides was observed at the runout of the Duchess and was roughly D1 R1.5. At its deepest point, this wind slab avalanche was about 2 feet deep and located in a section where rounded pillows were observed. It appears likely that this avalanche and the avalanche below it were triggered by a natural loose dry avalanche, located some 100 vertical feet above in the Duchess. Thus making this natural avalanche cycle step-down in nature.

Currently, it is 16.5 degrees at Hermit Lake, overcast, and winds are moderate from the South. In the past 24 hours a 93 mph gust has been observed at the summit.