Yverdon - Bevaix

The old snowpack still contains various weak layers. With the marked warming since Saturday, the likelihood of slab avalanches being triggered in these weak layers has been increasing appreciably over the course of each day. On Saturday and Sunday, natural dry or moist slab avalanches occurred mainly in Grisons and in isolated cases also in southern Valais, predominantly on west-facing slopes, and in isolated cases also on all other exposed slopes above 2200 m. In isolated cases, such avalanches also proved to be triggerable by human activity.

On the northern flank of the Alps, these weak layers are less pronounced. There, as the temperature warms up during the day, numerous gliding avalanches and loose snow avalanches are primarily to be expected. Due to cloudy nights with reduced outgoing longwave radiation and light precipitation, even in the morning there is a danger of avalanches.

After a mostly clear night, conditions were mostly sunny during the day.

Fresh snow

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Temperature

At midday at 2000 m, around +8 °C

Wind

Moderate to strong in the north overnight, elsewhere mostly light to moderate

The night will be partly cloudy. There may be a little precipitation in the northeast. The snowfall level will be around 2300 m. It will be mostly sunny during the day. On the eastern part of the northern flank of the Alps patchy cloud will continue into the morning.

Fresh snow

Up to 5 cm above 2600 m on the central and eastern parts of the northern flank of the Alps

Temperature

At midday at 2000 m, between +8 °C in the southwest and +4 °C in the northeast

Wind

Moderate westerly in the north and generally at high altitudes during the night, easing during the day

On Tuesday and Wednesday, mostly clear nights will be followed by sunny daytime conditions and light winds in all areas. Temperatures will remain very mild, with the zero degree level lying at 3200 to 3400 m.

The danger of dry avalanches will continue to decrease. The danger of wet and gliding avalanches will increase markedly over the course of each day.