Wind Slabs
- Hochgebirge
- Waldgrenze
- Unterhalb der Waldgrenze
- Wahrscheinlichkeit
- Possible
- Größe
- 1–1.5
After Friday's fast moving storm and the accompanying winds, the amount of snow remaining on the slopes is variable. Much of this new snow was transported by winds and some of it has been accumulated into drifts and catchment basins. Yesterday, these wind slabs were mostly hardened, minimally reactive, stubborn to trigger, and showed only minor cracking. There is a slight chance that moderate gusts last night transported new snow and have made these slabs more reactive today. Continue to travel cautiously and assess new terrain continually.
Wind drifted snow will be more prone to slide on steeper slopes. Use caution when approaching these isolated wind drifts and avoid mounds of snow at the top of starting zones and chutes. New snow accumulation is expected to be minimal (1-2") and wind conditions are forecast to be calm to light. Thus, it's unlikely that today's storm will have much of an impact on yesterday's conditions. Regardless, winds have been difficult to forecast this season; if you see blowing snow, know that wind slabs may be building and that these slabs may be more sensitive.
In most places the new snow seems to be bonding well with the old snow bed surface. However, this may not be the case everywhere on the mountain. Yesterday south facing slopes subject to solar insolation showed poor bonding between the new snow/old snow interface and wind drifts in these locations were more responsive to body weight assessments. Using appropriate travel techniques, such as keeping eyes on one another and moving cautiously when encountering new aspects and microterrain features, will continue to be important.