12-13
GNFAC Avalanche Advisory for Thu Dec 13, 2012
Snowpack and Avalanche Discussion
This naturally triggered avalanche was seen near Frazier Basin in the Northern Bridger Range on a NNE facing slope near 8800 ft. Photo: B. Fredlund
Forecast link: GNFAC Avalanche Advisory for Fri Dec 14, 2012
The upper stripe in the photograph is a layer of surface hoar buried 45cm off the ground. It is breaking clean in our stability tests (ECTP22 and 27). Mark found this layer in Taylor Fork on Dec 5 and had ECTP12...so it's likely gaining strength. Surface hoar is scary because it has a tendency to break far and wide, sometimes unexpectedly. Photo: GNFAC
GNFAC Avalanche Forecast for Wed Dec 12, 2012
Snowpack and Avalanche Discussion
GNFAC Avalanche Advisory for Tue Dec 11, 2012
Snowpack and Avalanche Discussion
A skier in the southern Madison Range found weak snow in his snowpit. Faceted layers buried mid pack and near the ground both produced unstable results during stability tests. Cracking and collapsing were also present in this area. Photo Matt Wieland
Forecast link: GNFAC Avalanche Advisory for Tue Dec 11, 2012
GNFAC Avalanche Advisory for Mon Dec 10, 2012
Snowpack and Avalanche Discussion
Today, the main avalanche concern will be wind slabs. Strong west to northwest winds over the past 12 hours have transported the recently fallen, low density snow onto leeward slopes. Winds slabs should stay confined to the new storm snow, but have to potential to step down to deeper layers in the snowpack.