We arrived close to the end season…Unfortunately during this last week the spring has brought rain and uncertain weather in Livigno.
Until April the 22th, the snow quality was really good; after, due the rain, the snow quality drastically worsened. Until Monday the 22th, we could make nice ski turns on spring snow, hard in the morning and gradually softer with the warming. Further, on Northern slopes, it was possible to find some loose snow, nice to ski. Since April the 23th, with the rain, the snow cover was wet and the snow quality was significantly worsened. Only in the alpine, during the few sun spells, we can made some nice turns on loose snow.
SNOWPACK STABILITY AND AVALANCHE OBSERVATIONS
The main snowpack stability problem was related to wet snow avalanches. We registered some wet snow avalanches, small and medium sized, on Northern slopes mainly along and below the treeline, where the snow cover was not yet moist. Only on alpine terrain, with snowfalls and winds, we had dry avalanche problems, with soft slabs, mainly small-medium sized. Until April the 22th, with spring conditions the avalanche danger was rising up from 1-Low to 2-Moderate with the daily warming. On April the 23th, with snowfalls and winds, the avalanche danger increase to 2-Moderate and on April the 24th and the 25th, increasing further to 3-Considerable.
On alpine terrain the snow surface was wind effected. Until April the 22th, except on Northern slopes, the crusts had spring conditions (hard in the morning and gradually softer with the daily warming). Since April the 23th, on alpine terrain soft slabs formed on the snow surface. Below 2400 m, the snow cover was wet up to the ground. In the alpine, on isolated Northern slopes, persistent weak layers were registered.
Until April the 22th, days were mainly sunny, with only some high clouds. Since April the 23th, we had overcast sky with frequent precipitations (snow lime around 2400 m); though at high elevations, the total amount of new snow was limited (around 20-30 cm, three days sum).