The season has begun, the Livigno area has a beautiful winter look, even if the snow cover thickness is generally lower than the average for the period.
Above the treeline, the wind has affected the superficial snow layer, the quality of the snow varies according to the slope, alternating between areas with windy snow that are more difficult to ski and others with a loose layer nicer to ski. Below the treeline, there is little or no snow, only along Norther aspects the snowcover thickness increase and a funny to ski superficial loose snow layer is recorded.
SNOWPACK STABILITY AND AVALANCHE OBSERVATIONS
Above the treeline, the superficial slabs stand on persistent weak layers, the avalanches could be triggered along these layers and reach medium sizes. Remote triggering are possible. In the alpine, with moderate winds, unstable, generally small sized snow-drift accumulations formed. The main avalanche activity were recorded between Tuesday 30th November and Wednesday the 1st December, due to moderate/strong Northern winds which formed unstable snow-drift accumulations, small and medium sized wind slabs avalanches were recorded. The avalanche danger level remained 2,2,1 (in Alpine, Treeline and Below Treeline respectively) and increased to 3,3,2 on Wednesday 1st December.
The snowpack thickness is generally lower than the average for the period. Above the treeline, the snow surface is wind affected; along windward slopes and close to the ridges, there is little or no snow, along leeward slopes loose snow and snow-drift accumulations alternate each others. Mainly on wind shelter slopes, within the middle part of the snowcover persistent weak layers are recorded, which alternates to melt-freeze crusts, which are thinner at higher elevations. Below the treeline and along Southern slopes, the snowcover thickness is lower; exept for Northern slopes where 30-50 cm of snow are recorded.
Between Saturday 27th and Sunday 28th November, we recorded about 15-20 cm of fresh snow in the village of Livigno and about 30-40 cm at the top. The following days were mostly variable with local light snowfalls coming from North. Between Wednesday 1st and Thursday 2nd December, moderate/strong Northern winds were recorded.
2021_12_03 Snowprofile, Blesaccia I-II