Zervreila

There are distinct weak layers in the middle and lower part of the snowpack, particularly on wind-protected shady slopes. These areas are particularly widespread south of a line from the Rhône to the Rhine and on the southern flank of the Alps. In these weak layers, medium-sized and sometimes even large avalanches can still be triggered by human activity. The snowpack on northern and eastern slopes in central Valais, as well as in northern Grisons, is particularly prone to triggering and remote triggering is also still possible in these areas in particular. North of a line from the Rhone to the Rhine, the snowpack structure is somewhat more stable and there are fewer hazardous zones.

In the west conditions were generally very cloudy, elsewhere mostly sunny.

Fresh snow

-

Temperature

At midday at 2000 m, between -1°C in the north and -3°C in the south

Wind

Overnight moderate at times from westerly directions, during the day mostly light

In the north-east, conditions will still be mostly sunny in the morning due to the foehn wind, but later it will become increasingly cloudy. Valais will see sunny intervals at first, but later on and elsewhere on the western part of the northern flank of the Alps conditions will be mostly cloudy. On the southern flank of the Alps skies will be overcast and a little snow will fall down to low altitudes.

Fresh snow

-

Temperature

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

Wind

South to southwest

• increasing to moderate during the second half of the night
• gradually turning strong on the Main Alpine Ridge
• moderate foehn wind in the north

On Saturday and Sunday conditions will be overcast on the southern flank of the Alps. Snow will fall during the nights to Saturday and Sunday down to low altitudes. On the central part of the southern flank of the Alps 20 to 30 cm of snow may fall, elsewhere less. In the north, Saturday will be comparatively sunny with variable cloud cover, while Sunday will see only occasional sunny intervals. Saturday in particular will see little snowfall. The wind will be a moderate southwesterly at times, strong at higher altitudes.

Avalanche risk will increase with the fresh snowfall on the Main Alpine Ridge and south of there, but elsewhere will not change significantly. Weak layers in the old snowpack will remain prone to triggering, especially in the inneralpine regions.