Persistent Slabs
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 3
Poor snowpack structure remains, and it has proven capable of producing large, destructive human-triggered avalanches. Friday’s avalanche failed on the weak layer beneath the Christmas rain crust. In some locations, this crust may temporarily support the weight of a skier or rider, but its ability to bridge underlying weaknesses is highly variable and unreliable. The most dangerous slopes face north and east, especially those that harbor a more robust slab from previous wind loading.
The snowpack will not offer much feedback today. Outward signs of instability have decreased, and snowpack tests are stubborn at best. These are challenging conditions to assess in the field, making it difficult to confidently move into steeper, consequential terrain. When the snowpack is confusing, terrain choice becomes critical—sticking to low-angle slopes remains the safest option for skiing and riding.