Information Note issued on 11/7/2018 at 03:45 p.m.

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Amounts of snow on the ground today above 2500 m:
100-160 cm in the Lys Valley and in Cervinia area (about 2 meters at 3000 m); 70-110 cm in the rest of the Region.
Below 2500 m the high temperatures have humidified the snowpack accumulated in recent days, decreasing its thickness a lot.

New snow during the last 24 hours
At an average of 2500 m, 20-30 cm of fresh snow have been recorded, especially in the valleys bordering with Piedmont and along the mail alpine divide close to Switzerland, maximum values of 50 cm in the upper Valtournenche. The snow/rain limit has risen up to 2000-2100 m and the snow is wet up to 2400-2600 m, humid up to 2800-3100 m, while it's dry powder above these altitudes. During the latter snowfall, wind activity was moderate by the southern quadrants above 2800-3000 m.

Avalanche activity and critical issues
Typical avalanche problems: wet snow below 2400-2600 m, wind-drifted snow above 2800-3000 m.
In the days immediately after the abundant precipitations of the last week, several medium avalanches, in single cases large sized, have occurred, mostly full-depth and wet snow, even down to the valley bottom in the areas most affected by the snowfall. Then, the natural release avalanche activity has been considerably reduced, but further isolated release of small and medium wet snow avalanches are not to be excluded.
Above 2800-3000 m wind accumulations are present, both of new formation and old ones hidden from the last snowfall, especially at the northern aspects: on the steep slopes, the most loaded by the wind, the passage of a skier could cause the release of a surface slab avalanche of medium size. The main problems are located, as usual, close to ridges (lee sides), at the entrance of channels and on slope changes.

Trend
Until saturday, southern humid streams will cause, at times, weak perturbations on our region: one will pass over this evening, a second is forecast for Friday, and a third for Saturday, causing widespread cloudiness with some precipitation period, alternated with irregular clearings.


The next information note will be issued according to the evolution of snow and weather conditions.