Sun, Mar 15, 2020 - 11:15 AM
Morgan & Sean
Santiam Pass Area (including Three Finger Jack) / 4500'
Snow Conditions Avalanche Activity Caught, Buried, or Injured Person
Ski or Snowboard
Obscured (eg: fog)
We toured around Santiam Pass today in the Potato Hill periphery. It was cold and windy, with winds wrapping the terrain, and coming from seemingly all directions. With the low density new snow we found some varied conditions; mostly wind affected new snow, and scoured in some areas. The visibility was poor/flat light.
On our second run we triggered two avalanches; the first a D1 windslab on a north facing slope @ 4700', and the second a D1.5 windslab on a northeast facing slope @ 4600'. Both slides were skier triggered. The first slab was top loading from a ridge, and the second avalanche was cross loading mid slope. The new lower density snow was easily transporting in the wind, and not bonding with the firm bed surface (the old snow interface).
Both slides failed with hard slab characteristics, breaking above the skier, and the second avalanche took one skier for a 200' ride. It was not a big or dramatic avalanche, but could have buried a person. We are going to debrief in 2 days to reflect on our experience, but wanted to share for informational purposes.
See pictures of the second avalanche attached.