Schreckhorn

In high Alpine regions a considerable avalanche danger will be encountered in some regions.

10 to 20 cm of snow, and even more in some localities, has fallen since Thursday above approximately 3000 m. As a consequence of a moderate to strong southwesterly wind, wind slabs formed in high Alpine regions. Over a wide area 10 cm of snow will fall until Saturday above approximately 2500 m. The prevalence of the avalanche prone locations will increase with altitude. Wind slabs can in some places be released by people, but they will be small in most cases. Restraint should be exercised because avalanches can sweep people along and give rise to falls.

As a consequence of solar radiation moist snow slides are possible.

Snowpack Over widespread areas snowfall has fallen on bare ground. Only on glaciated north-facing slopes above 3500 m was there generally a cohesive area-wide old snowpack prior to the precipitation. In those areas, the snowpack consists of several layers in the interim, for which reason extensive flat-ground avalanches are also possible in the major areas of precipitation, where the danger levels are expected to decrease less swiftly. Observed weather review Friday, 22.09.2023 Weather forecast through Saturday, 23.09.2023 Outlook through Monday, 25.09.2023 Sunny weather is expected. The zero-degree level will ascend to an extremely high altitude on Monday: 4500 m. The danger of dry-snow avalanches will decrease. Caution is urged in evaluating glaciated north-facing slopes above approximately 3500 m. As a consequence of the higher daytime temperatures and solar radiation, moist-snow avalanches can be expected, most of all in the high alpine regions of the central and eastern sectors of the northern flank of the Alps and in Grisons. These releases will frequently grow to medium size. In the remaining regions of Switzerland, moist snowslides will be possible.