Forecast link: GNFAC Avalanche Advisory for Wed Feb 13, 2013
Forecast link: GNFAC Avalanche Advisory for Wed Feb 13, 2013
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Forecast link: GNFAC Avalanche Advisory for Wed Feb 13, 2013
The stripe in the snow is a layer of buried surface hoar in Bacon Rind. It's still reactive in stability tets (ECTP11) and easy to find. Avoid steep slopes with this layer since surface hoar is notoriously unpredictable. Photo: GNFAC
GNFAC Avalanche Forecast for Tue Feb 12, 2013
Snowpack and Avalanche Discussion
Bridger Range Northern Gallatin Range
A skier triggered this wind slab on Lionhead Ridge. The snowpack on this southwest facing slope was thin. Photo: D. Howard
GNFAC Avalanche Forecast for Mon Feb 11, 2013
Snowpack and Avalanche Discussion
Northern Gallatin Range Northern Madison Range
GNFAC Avalanche Advisory for Sun Feb 10, 2013
Snowpack and Avalanche Discussion
Northern Gallatin Range Northern Madison Range
The surprise storm that hammered the northern Gallatin Range and mountains around Big Sky last night will certainly have a negative effect on snowpack stability. With close to .5 inches of SWE falling in a few hours, the snowpack will struggle to adjust to this rapid load.
Today, there will be two main avalanche problems.
This slide was remotely triggered on a west facing slope in Beehive Basin. Remotely triggered slides are bulls eye data the snowpack is very unstable. Photo Jon Wareham
GNFAC Avalanche Forecast for Sat Feb 9, 2013
Snowpack and Avalanche Discussion
Bridger Range Gallatin Range Madison Range
Lionhead area near West Yellowstone
GNFAC Avalanche Advisory for Fri Feb 8, 2013
Snowpack and Avalanche Discussion
Bridger Range Gallatin Range Madison Range
Lionhead area near West Yellowstone Cooke City
This slide in the Bridger Range, several days old, was on an east aspect above Fairy Lake and looked to break under the storm snow. The snowpack here is thin and week. Photo: C. Babineau-Z