This natural slide was seen on Saturday, Jan 3rd. Lots of wind-loading created unstable slabs. Photo: Travis Anderson
08-09
This fresh avalanche was in First Yellowmule and appeared to be triggered by snowmobilers. Photo by: Jerrod Winderl
Forecast link: GNFAC Avalanche Advisory for Sat Mar 7, 2009
A large slab avalanche released off Amphitheater Mountain as seen from Silver Gate, MT. Photo: Beau Fredlund
Flanking Lulu Pass near Cooke City, Fisher Peak slid naturally during the avalanche cycle associated with the Avalanche Warning. Photo by: Beau Fredlund
GNFAC Avalanche Advisory for Sun Dec 28, 2008
Snowpack and Avalanche Discussion
The southern Gallatin Range, the entire Madison Range, the mountains near West Yellowstone and the Lionhead Area, the mountains near Cooke City, and the Washburn Range:
We remotely triggered a large avalanche off of Henderson Ridge near Cooke City. It failed on a layer of large faceted grains. The slope was heavily wind-loaded and the avalanche was a hard slab, Photo: Doug Chabot
Stiff west winds created hard slabs that we triggered from the safety of the ridge. Even as I tried to write my snowpit notes the slope was reloading. Photo: Ross Lynn
Doug Chabot standing next to the crown of the avalanche he and his partner remotely triggered. It averaged 3-4 feet deep, was approx. 1,000\' wide and 700\' vertcal. The slope was heavily wind-loaded and was 33 degrees steep. Photo: Ross Lynn
This small road cut along the spur road to Big Sky produced a small slab avalanche.