Persistent Slabs
- Hochgebirge
- Waldgrenze
- Unterhalb der Waldgrenze
- Wahrscheinlichkeit
- Likely
- Größe
- 4
Time and warmer temperatures are helping to strengthen the snowpack, but persistent weak layers are called that because they persist! Our layer of concern is the early December snow that has turned to weak, sugary facets. Since Christmas Eve, regular storms have now piled more than 4' of snow on top of this layer. Add wind drifting, and we've seen avalanches up to 8' deep. The danger is greatest on steep, upper elevation slopes facing NW-N-E, and last Friday's fatal avalanche shows how real the danger is.