This avalanche occured outside the advisory area south of Livingston. Skiers triggered this slide as they descended the adjacent slope which has a 30 deg slope angle.
The Bridger, Gallatin and Madison Ranges, and the Lionhead area near West Yellowstone:
The Bridger, Gallatin and Madison Ranges, the Lionhead area near West Yellowstone, the mountains around Cooke City and the Washburn Range:
These facets may be a future weak layer. They form when solar radiation heats upper layers of the snowpack, but the surface of the snowpack emits long wave radiation to a clear sky and remains cool resutling in a strong temperature gradient. Photo: YCSP
The Bridger, Gallatin and Madison Ranges, the Lionhead area near West Yellowstone, the mountains around Cooke City and the Washburn Range:
This avalanche likely released on faceted snow 2 feet under the surface during the weekend.
Weak, faceted snow at the ground is still fracturing clean in our stability tests. Three feet of wind blown snow was added in in 6 days.
