Zervreila

In the regions south of a line Rhône - Rhine, the persistent weak layers that have been a feature since the beginning of January are still present. The number of places where avalanches can be triggered by human activity in the weak layers of the old snowpack are continuing to decrease. However, avalanches may still become large.

In the regions north of a line Rhône - Rhine and in the extreme west of Lower Valais, weak layers in the snowpack are mostly thickly covered. Triggering by human activity is unlikely.

As a consequence of the falling temperatures, the continued moistening of the snowpack and of the deeper weak layers is slowing down. The probability of triggering wet snow avalanches increases only a little during the day. Gliding avalanche activity is continuing to decrease. Gliding avalanches can however become large, especially in the snowier west.

Sunday night into Monday was mostly clear in the west and only partly clear in the east and south. During the day there was only a little sunshine on the southern flank of the Alps and on the eastern part of the northern flank of the Alps, while elsewhere it was mostly sunny.

Fresh snow

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Temperature

At midday at 2000 m, around +2 °C

Wind

Light, occasionally moderate southerly

Monday night into Tuesday will be mostly clear in the north. In the early morning, it will still be mostly sunny in this region. During the day, cloud cover will gradually increase from the west. As a result, rain showers are possible over the Jura. Along the Main Alpine Ridge and south of it the overnight, conditions will be mostly cloudy. During the day it will be mostly cloudy, especially on the central part of the southern flank of the Alps, with showers overnight to Tuesday and on Tuesday afternoon. It will be sunnier in southern Grisons.

Fresh snow

• A few centimetres on the central part of the Main Alpine Ridge above 1500 m

Temperature

At midday at 2000 m, between +1 °C in the north and -2 °C in the south

Wind

• From southerly directions
• Mostly light, sometimes moderate as the day progresses in the regions exposed to the foehn wind

Tuesday night into Wednesday will be partly cloudy. During the day it will be partly cloudy in the north with bright spells, especially in the inneralpine regions of Valais and Grisons. Showers are possible in the Jura and the Prealps. In the south, it will be mostly very cloudy with bright spells. Overnight to Thursday, it will be mostly overcast with widespread light snowfall above approximately 1400 m. During the day it will clear rapidly in the west and south, but it will only be partly sunny on the central and eastern parts of the northern flank of the Alps and in northern Grisons. There will be an often moderate wind at high altitudes, shifting from a southerly to a northerly.

The danger of dry avalanches will increase somewhat, especially on the northern Alpine ridge. In addition, the danger of wet and gliding avalanches will increase a little during the course of the day. Touring and off-piste descents should be completed in good time.