Zervreila

There are pronounced weak layers in the middle and lower part of the snowpack, particularly on wind-protected shady slopes. Such places are particularly common south of a line from the Rhone to the Rhine. In these weak layers, medium-sized and, in isolated cases, large avalanches can still be triggered by people. The snowpack on northern and eastern slopes in central Valais, as well as in northern Grisons, is most prone to triggering while north of a line from the Rhone to the Rhine, the snowpack structure is somewhat more stable and there are fewer hazardous zones.

Surface hoar has formed in many places over the past few days and where it has not been blown away, it has been covered by a layer of fresh snow, especially on the southern flank of the Alps.

Conditions on the central and eastern parts of the northern flank of the Alps were mainly sunny due to the foehn wind, but elsewhere in the north there was mainly heavy cloud cover with sunny spells. Skies were overcast on the southern flank of the Alps.

Fresh snow

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Temperature

At midday at 2000 m, between +2°C in the north and -5°C in the south

Wind

Moderate from southerly directions, occasionally strong during the day

In the north, conditions will initially remain fairly sunny in the mountains. Clouds will thicken from the west over the course of the day. There will be heavy cloud cover on the southern flank of the Alps.

Fresh snow

There will be snowfall down to low altitudes:

• on the Main Alpine Ridge and south of there as well as in the Jura: mostly 5 to 10 cm
• elsewhere less or mostly dry

Temperature

At midday at 2000 m, between -2°C in the north and -4°C in the south

Wind

South to southwesterly

• moderate to strong, dropping briefly in the first half of the day on Saturday
• moderate foehn wind in the north

Sunday

In the north, there will be broken cloud cover with occasional light precipitation. The southern flank of the Alps will be overcast and 10 to 20 cm of snow will fall down to low altitudes. There will be a moderate wind from southerly directions at high altitudes.

Avalanche risk will increase in the south, but there will be no significant change elsewhere.

Monday

In the north, there will be broken to heavy cloud cover with very little precipitation falling as snow down to low altitudes. In the inneralpine regions, there will be some sunny intervals over the course of the day, while conditions will be mainly sunny on the southern flank of the Alps with moderate northerly winds. There will be no significant change in avalanche risk.