GNFAC Avalanche Forecast for Fri Dec 9, 2016
Madison Range Lionhead area near West Yellowstone
The Yellowstone Club ski patrol triggered this slide during control work. The slide failed on weak facets near the ground. Photo YC Patrol
GNFAC Avalanche Forecast for Thu Dec 8, 2016
Bridger Range Gallatin Range Madison Range
Lionhead area near West Yellowstone
The Big Sky Ski Patrol triggered this avalanche on the south face of Lone Peak with minimal explosives. It broke 3-4' deep on facets at the ground and propagated 1200' wide. This instability also exists in the backcountry. Photo: Big Sky Ski Patrol
GNFAC Avalanche Advisory for Wed Dec 7, 2016
Southern Madison Range Southern Gallatin Range
Lionhead area near West Yellowstone
GNFAC Avalanche Advisory for Tue Dec 6, 2016
Cooke City
At 9,000 feet in Middle Basin/Beehive there's 2 feet of snow. Facets near the ground are breaking in some stability tests. This week's cold weather will likely allow the facets to grow bigger. Photo: A. Whitmore
Photo: B. Campbell
GNFAC Avalanche Advisory for Mon Dec 5, 2016
Cooke City
This natural avalanche occured after last Thursday's storm and appears to have failed on a layer of weak facets near the ground. It is on the south boundary of Bridger ski area, on the shoulder of Mundy's Bowl. The ski area is closed, there is no avalanche control, and a backcountry snowpack exists across the mountain. Photo: GNFAC
Forecast link: GNFAC Avalanche Advisory for Mon Dec 5, 2016