15-16
GNFAC Avalanche Advisory for Mon Jan 11, 2016
Bridger Range Madison Range Gallatin Range
Lionhead area near West Yellowstone Cooke City
This slide was remotely triggered from low on the slope. One person was caught but not bureid. The debris did bury a snowmobile. The slide failed on depth hoar. Photo: GNFAC
GNFAC Avalanche Advisory for Sun Jan 10, 2016
Bridger Range Madison Range Gallatin Range
Lionhead area near West Yellowstone Cooke City
GNFAC Avalanche Forecast for Sat Jan 9, 2016
Bridger Range Madison Range Gallatin Range
Lionhead area near West Yellowstone Cooke City
This slide was remotely triggered in Tepee Basin in the southern Madison Range. The rider who triggered the slide was not caught, but the slide ran down and hit a party member lower on the slope. Fortunately the rider was not buried, but his sled required some digging to be freed from the the avalanche debris. The slide failed on facets near the ground. Photo B. Radicky
GNFAC Avalanche Forecast for Fri Jan 8, 2016
Bridger Range Madison Range Gallatin Range
Lionhead area near West Yellowstone Cooke City
GNFAC Avalanche Forecast for Thu Jan 7, 2016
Bridger Range Madison Range Gallatin Range
Lionhead area near West Yellowstone Cooke City
This extended column test shows the poor snowpack structure in the N. Madison Range on January 6, 2016. ECTP 30. Despite difficult initiation, poor structure that has been propagating and causing avalanches for weeks had us sticking to low angle slopes. Photo: GNFAC