Skiers northwest of Cooke City observed many new slab avalanches on all aspects from mid to upper elevations. Some stepped down onto older persistent weak layers. Photo: B. Fredlund
Skiers northwest of Cooke City observed many new slab avalanches on all aspects from mid to upper elevations. Some stepped down onto older persistent weak layers. Photo: B. Fredlund
Skiers northwest of Cooke City observed many new slab avalanches on all aspects from mid to upper elevations. Some like this one stepped down onto older persistent weak layers. Photo: B. Fredlund
SW aspect at 6800’
Air temp -1c
CT16NP
ECT21NP
PST6
23” snowpack
The same two layers, wind/sun or rain crust with a surface hoar layer and 8-10” of depth hoar/facets at this location. We did not see cracking, collapsing or whoomphing. Traveled up the ridge of the south aspect of the sunshine mine drainage.
Approximately at 45 31’58”N 11101’45”W
A skier north of Bridger Bowl ski area noted a layer of feathery surface hoar growing in the upper 500 vertical feet to the Ridge. B. Van Wert
A large natural avalanche on the Fin outside of Cooke City was observed on January 31st. It likely failed on January 30th.
A large avalanche failed naturally on January 30th. It broke deep in the snowpack on a layer of weak facets. Photo: T Parrie
There were many loose snow avalanches or sluffs with the 8" of new snow in Hyalite. These avalanches were not breaking as slabs but a thin layer of weak, near-surface facets caused the new snow to slide actively. Photo: N. Salsburg
There were many loose snow avalanches or sluffs with the 8" of new snow in Hyalite. These avalanches were not breaking as slabs but a thin layer of weak, near surface facets caused the new snow to slide actively. Photo: S. Reinsel
