Moderate avalanche danger will be encountered over a wide area
Edition: 15.4.2021, 17:00 / Next update: 16.4.2021, 18:00
Snowpack
The snowdrift accumulations generated over the last few days are still triggerable in some places. They are blanketed over with fresh snow in many places and thus, difficult to recognize. Fractures in more deeply embedded layers of the snowpack are currently not likely.
As a result of solar radiation, loose-snow avalanches and moist-snow slides are possible in the fresh fallen snow.
Observed weather on Thursday, 15.04.2021
Nocturnal skies in the western regions were partly clear, in the southern and eastern regions overcast. In the southern regions in particular, there was snowfall down to low lying areas. During the daytime hours in the western regions, and to some extent in the southern and eastern regions, skies were predominantly overcast. During the course of the day there were showers with some snowfall down to low lying areas.
Fresh snow
In the central sector of the southern flank of the Alps, 10 to 20 cm of fresh snow was registered; in the other regions of Switzerland a few centimetres from place to place.
Temperature
At midday at 2000 m, -8 °C in the northern regions and -6 °C in the Valais and in the southern regions.
Wind
  • Winds were predominantly light;
  • during the daytime in the Jura region and in the western Prealps, a moderate-strength bise wind prevailed.
Weather forecast through Friday, 16.04.2021
During the nighttime hours skies are expected to be predominantly overcast and a small amount of snowfall is anticipated in the form of showers. The snowfall level will remain at low lying areas. During the daytime it will be sunny to start with. During the later part of the day it will initially be sunny, later increasingly overcast, but it is expected to remain dry. In the western and southern regions the cloud cover will be heavier than in the northeastern regions.
Fresh snow
In the southern Valais, 5 to 10 cm of fresh snow is anticipated; in the other regions of Switzerland, a few centimetres in the form of showers from place to place.
Temperature
At midday at 2000 m, -5 °C.
Wind
Winds will be blowing predominantly at light strength, in the western Prealps and in the Jura region a moderate-strength bise wind will intermittently be blowing.
Outlook through Sunday, 18.04.2021
On Saturday it will be partly sunny, accompanied by increasing cloud cover and isolated showers during the latter part of the day. On Sunday, skies will frequently be overcast, accompanied by isolated showers. At high altitudes, a few centimetres of snowfall is possible. The avalanche situation is not expected to change significantly.