GNFAC Avalanche Forecast for Mon Dec 28, 2015
Snowpack and Avalanche Discussion
Bridger Range Madison Range Gallatin Range
Lionhead area near West Yellowstone Cooke City
15-16
Forecast link: GNFAC Avalanche Advisory for Sun Jan 3, 2016
This large natural avalanche was observed on the shoulder of Mount Fox outside of Cooke City. The slide failed at the ground and appears to be the result of wind loading. The crown is estimated to be 6-7 feet at the deepest and it ran 1500 vertical feet. Photo B. Zevora
Forecast link: GNFAC Avalanche Forecast for Mon Dec 28, 2015
GNFAC Avalanche Forecast for Sun Dec 27, 2015
Snowpack and Avalanche Discussion
Bridger Range Madison Range Gallatin Range
Lionhead area near West Yellowstone Cooke City
This natural avalanche on Mt. Blackmore occurred a few days before Christmas. It was likely the result of wind blown snow overloading weak facets near the ground. Photo: GNFAC
Forecast link: GNFAC Avalanche Forecast for Sun Dec 27, 2015
This slide occurred in Tepee Basin north of West Yellowstone. It was likely a natural that happened a few days before Christmas. It ran on facets near the ground. Photo: J. Watt
Forecast link: GNFAC Avalanche Forecast for Sun Dec 27, 2015
This slide was triggered just to the north of Daisy Pass outside of Cooke City. It is unknown if anyone was caught. The deepest part of the crown is upwards of six feet. It was likely triggered in an area where the slab was thinner then propagated into a deeper part of the snowpack. Photo: S. Strenge
This slide occured just to the south of Daisy Pass outside of Cooke City. It was triggered by a snowmobiler who ended up with his sled fully buried. Fortunately the rider wasn't buried or injured. The avalanche likely failed on facets near the ground. Photo: S. Strenge
GNFAC Avalanche Forecast for Sat Dec 26, 2015
Snowpack and Avalanche Discussion
Bridger Range Madison Range Gallatin Range
Lionhead area near West Yellowstone Cooke City
This slide was found by skiers up Dudley Creek on Christmas Day. It appears to be a natural that occurred a few days ago. The crown was 1-2 feet deep and 600-800 feet wide. It occurred on a NE facing slope and failed on facets near the ground. Numerous other avalanches were observed in the area. Photo A. Whitmore
Forecast link: GNFAC Avalanche Forecast for Sat Dec 26, 2015