Persistent Slabs
- Hochgebirge
- Waldgrenze
- Unterhalb der Waldgrenze
- Wahrscheinlichkeit
- Unlikely
- Größe
- 3
There have been hours of discussion, head scratching and contemplation in recent days about the persistent weak layer on the northern aspects at upper elevations as it has gradually gone quiet. Personally, I spent an hour at the White Pine trailhead yesterday morning discussing with my colleagues the reactivity, or lack thereof, of the persistent weak layer over the last several days before we started a tour seeking more information about the layer. We have not seen or heard of avalanche activity involving this layer since the Stairs Gulch event last weekend, and prior to that was 10 days ago in Oingo Boingo. It doesn’t mean that the persistent weak layer is gone, but rather the mild weather and lack of loading has provided a stabilizing trend.
But let’s be very clear, low danger does not mean no danger. Areas on north aspects, particularly where the snowpack is shallow near rocks and cliffs could still be problematic. We should use safe travel techniques as we move through the mountains today and not let low rating lull us into complacency.