Weak layers exist near the base of the snowpack in particular on west, north and east facing slopes above approximately 2200
m. In western Lower Valais and on the northern flank of the Alps, these near-ground layers are mostly embedded so deep that
the probability of avalanches being released by people is rather small. From central Valais through Ticino to Grisons and
generally in places with shallow snow cover, the bonding of the snowpack is least favourable, and people can still release
avalanches in the old snowpack.
Gliding avalanche activity is high. Further gliding avalanches originating on steep grassy slopes that have retained the snow
thus far are to be expected in the coming days as well. They can be released at any time of day or night. In the western and
northern regions with a lot of snow, these can reach a large size in some cases.
On steep south facing slopes, the surface of the snowpack will become moist because of its exposure to warming and radiation
during the day. Here, the clear skies on Wednesday night will give rise to a melt-freeze crust on the surface of the snowpack.