GNFAC Avalanche Forecast for Mon Dec 31, 2012
Snowpack and Avalanche Discussion
Bridger Range Madison Range Gallatin Range
Lionhead area near West Yellowstone Cooke City
12-13
This avalanche was noticed yesterday (Sat, 12/29) on an east facing slope of Lionhead Ridge. A cornice likely triggered the slope. It was shallow and steep and the fracture did not propagate far. Large cornice chunks were still visible in the debris. Photo: GNFAC
GNFAC Avalanche Advisory for Sun Dec 30, 2012
Snowpack and Avalanche Discussion
Bridger Range Madison Range Gallatin Range
GNFAC Avalanche Advisory for Sat Dec 29, 2012
Snowpack and Avalanche Discussion
Bridger Range Madison Range Gallatin Range
Lionhead area near West Yellowstone Cooke City
This slide was triggered in an area where the snowpack was under a meter deep. The weak layer collapsed and propagated across the slope into a deeper snowpack. Photo GNFAC
Isolated slopes around Cooke City have unstable snow. This slide was human triggered and failed on a layer of facets near the ground. The slope was SW facing around 9500 ft. Photo GNFAC
GNFAC Avalanche Forecast for Fri Dec 28, 2012
Snowpack and Avalanche Discussion
Bridger Range Madison Range Gallatin Range
GNFAC Avalanche Forecast for Thu Dec 27, 2012
Snowpack and Avalanche Discussion
Bridger Range Madison Range Gallatin Range