This avalanche (on the right) was triggered by a snowmobiler on Thursday, December 31. The one on the left was triggered on Saturday, December 26. Photo: GNFAC
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GNFAC Avalanche Forecast for Sat Jan 2, 2016
Snowpack and Avalanche Discussion
Bridger Range Madison Range Gallatin Range
Lionhead area near West Yellowstone Cooke City
Avalanche in Sheep Creek just northwest of Cooke City. SW facing slope, approximately 9,700' elevation. Believed to be snowmobiler triggerd. Photo: B. Fredlund
Forecast link: GNFAC Avalanche Forecast for Sat Jan 2, 2016
Description with photos below. Photo: A. Whitmore
Forecast link: GNFAC Avalanche Forecast for Mon Jan 4, 2016
GNFAC Avalanche Advisory for Fri Jan 1, 2016
Snowpack and Avalanche Discussion
Bridger Range
Another view of the crown and bed surface. Tree covered slopes can slide if they are steep enough, and taking a ride would not have a good outcome. Photo: A. Whitmore
This avalanche was triggered from a lower angle ridge about 30' away. It was 80' wide and ran over 700' vertical on a 38 degree slope through burnt timber. It broke on facets near the ground. Photo: A. Whitmore
This slide occurred on a south facing slope off Mt Abundance. The slide was human triggered and failed on facets near the ground. Although small, this side could have injured or buried a person. Photo: GNFAC
Forecast link: GNFAC Avalanche Advisory for Fri Jan 1, 2016