Saint-Cergue

Near-surface layers on wind-protected shady slopes are lying on surface hoar in places. There are continued reports of avalanches being triggered in this weak layer. Over the course of this week, snowdrift accumulations have formed with wind from varying directions, some of which are still prone to triggering in isolated cases.

In the inneralpine regions of Valais and Grisons, the layers of fresh and drifted snow are also lying on a weak old snowpack with pronounced near-ground weak layers. Avalanches can propagate into these deep weak layers in isolated cases or can be triggered directly in deep layers. In the other regions, there are still weak layers in the near-ground old snowpack in some places on shady slopes, but they are mostly so thickly covered that they are hardly prone to triggering.

After a clear night, conditions were sunny.

Fresh snow

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Temperature

At midday at 2000 m, between +3 °C in the west and -1 °C in the east

Wind

Light to moderate from north-easterly directions

The night will be partly cloudy and outgoing longwave radiation somewhat reduced. During the day it will initially be fairly sunny; as the day progresses it will become increasingly cloudy and isolated showers are possible.

Fresh snow

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Temperature

At midday at 2000 m, around -1 °C in the west and -3 °C in the east

Wind

Mostly light, with a sometimes moderate northerly wind in the afternoon.

During the night into Sunday, snow will fall over a wide area; on Sunday morning, some snow will fall, mainly in the south and west. The snowfall level will be below 1000 m. On the southern flank of the Alps, 15 to 30 cm of snow is expected, further north 5 to 15 cm. The wind will be light to moderate from southerly directions on Sunday and northerly directions on Monday. The danger of dry avalanches will increase significantly in the south. In the north, the avalanche danger will not change significantly.