The surface of the snowpack has been influenced by rain, wind and the sun. On the northern flank of the Alps and in Valais, northern Ticino and large parts of Grisons, a crust has formed on the surface up to altitudes of 2600 to 3000 m. In particular north of a line between the Rhone and Rhine, the crust is strong in many cases and partly icy.
Above approximately 2600 m, the storm force westerly wind will give rise to small snow drift accumulations that in some instances are prone to triggering. Below this altitude, only the small quantity of fresh snow can be transported.
On the northern flank of the Alps, slab avalanches are unlikely to be released in deeper layers. From central Valais through northern Ticino to Grisons, faceted and loosely bonded layers exist in the snowpack. These are lying either directly underneath the rain crust that formed at the end of December, or they are embedded deeper in the snowpack. At elevated altitudes, these weak layers remain prone to triggering in some instances.

The night skies were frequently cloudy in the north and mostly clear in the south. During the day it was party sunny in Ticino and central and southern Grisons, otherwise it was frequently cloudy. In the east, a few snowflakes fell above approximately 1500 m.

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

Moderate to strong from westerly directions, easing a little as the day progressed

On Monday night a little snow will fall in the north and Lower Valais above approximately 2000 m. During the day it will be mostly dry and in the north the foehn wind will give rise to some bright spells. The south will be mostly cloudy.

A few centimetres of snow will fall above approximately 2000 m in some areas of the north, Lower Valais and the Gotthard region.

At midday at 2000 m: between +6 °C in the north and -2 °C in the south

From the southwest

• Storm force in the north
• Moderate in the south at 2000 m, strong in the high Alpine regions