These two layers of buried surface hoar are being found on most north facing slopes, but are showing signs of strenghteing.
09-10
GNFAC Avalanche Advisory for Fri Mar 5, 2010
Snowpack and Avalanche Discussion
The Bridger, Madison and Gallatin Ranges, the Lionhead area near West Yellowstone, the mountains around Cooke City and the Washburn Range:
GNFAC Avalanche Forecast for Thu Mar 4, 2010
Snowpack and Avalanche Discussion
The Bridger, Madison and Gallatin Ranges, the Lionhead area near West Yellowstone, the mountains around Cooke City and the Washburn Range:
This avalanche was triggered by skiers who dropped a piece of cornice. It did not propagate widely but broke deep and ran far through trees and over rocks. Photo - Anonymous
Skiers dropped cut a piece of cornice and triggered this slope in Argentina Bowl just south of Saddle Peak. Even though this avalanche did not propagate widely, it broke deep and ran far through trees and over rocks, a painful ride at best. Photo- Anonymous
GNFAC Avalanche Advisory for Wed Mar 3, 2010
Snowpack and Avalanche Discussion
The Bridger, Madison and Gallatin Ranges, the Lionhead area near West Yellowstone, the mountains around Cooke City and the Washburn Range:
GNFAC Avalanche Forecast for Tue Mar 2, 2010
Snowpack and Avalanche Discussion
The Bridger, Madison and Gallatin Ranges, the Lionhead
area near West Yellowstone, the mountains around Cooke City and the Washburn
Range:
GNFAC Avalanche Forecast for Mon Mar 1, 2010
Snowpack and Avalanche Discussion
The Bridger, Madison and Gallatin Ranges, the Lionhead area near West Yellowstone, the mountains around Cooke City and the Washburn Range:
The avalanche ran over steep terrain mid path. You can see the debris curving away outside the right side of the photograph. It ran 1,200 feet and pulled out the entire winter's snowpack. Photo: Wykoff.
This slide broke on an east facing slope near the ridge from skiers kicking off a large cornice. It was a hard slab of wind compacted snow at the crown. Photo: Wykoff