2021-04-24T16:00:00+00:00 avalanche-warnings.eu 2021-04-24T22:00:00+00:00 2021-04-25T22:00:00+00:00 2021-04-24T22:00:00+00:00 2021-04-25T10:00:00+00:00 1 2021-04-25T10:00:00+00:00 2021-04-25T22:00:00+00:00 1 2021-04-24T22:00:00+00:00 2021-04-25T10:00:00+00:00 1 2021-04-25T10:00:00+00:00 2021-04-25T22:00:00+00:00 2 wet snow due to solar radiation and daytime warming old snow isolated in very high-altitude shady terrain Increasing loss of snowpack firmness Avalanche danger will increase to moderate below 2000 m during the course of the day. With intensifying solar radiation and daytime warming, the danger of naturally triggered and artificially triggered avalanches will increase in very steep terrain. There, where the most recent snowfall was deposited on bare ground and on very steep grass-covered slopes, glide-snow avalanches are possible. Backcountry tours should be terminated early in the day. Under generally large additional loading, dry-snow slab avalanches are triggerable (old-snow problem) but are limited to shady ridgeline terrain at high altitude. Nighttime skies on Saturday night will be mostly clear, thus, the snowpack will be varyingly able to regain firmness (depending on aspect and altitude) and form a melt-freeze crust. During the morning, solar radiation will intensify, daytime temperatures will rise, the moistening of the snowpack will progress. The snow will transform to firn, lose firmness and stability and become heavy, at low altitudes wet-to-rotten. At high altitudes in shady terrain, there are still reserves of cold, the snow is still dry. In isolated cases there are weak layers in the old snow for slabs (in transitions from the fresh layer to the compact old snowpack) particularly above 2200m. Water seepage into the snowpack has created a lubricating layer at ground level which enhances the gliding snowpack over the ground. The slopes are becoming increasingly bare of snow. On Sunday morning, following a night of very few clouds, it will be sunny over widespread areas. Starting at midday, convective cloud build-up is anticipated, occasional showers are possible. Particularly in northern regions, the NW winds will strengthen in exposed terrain. Temperatures will recede somewhat. At 2000 m: about zero degrees; at 1500 m, between +3 and +6 degrees. On Monday, increasingly gray skies, temperatures will drop somewhat, a bit of precipitation is expected. The wet-snow problem will diminish. 2021-04-24T16:00:00+00:00 avalanche-warnings.eu 2021-04-24T22:00:00+00:00 2021-04-25T22:00:00+00:00 1 wet snow due to solar radiation and daytime warming Low avalanche danger On very steep slopes in isolated places, rising danger of wet loose-snow avalanchees during the course of the day, due to solar radiation and daytime warming. Nighttime skies on Saturday night will be mostly clear, thus, the snowpack will be varyingly able to regain firmness (depending on aspect and altitude) and often form a melt-freeze crust. During the morning, solar radiation will intensify, daytime temperatures will rise, the moistening of the snowpack will progress. The snow will lose firmness and stability and become heavy. The slopes are becoming increasingly bare of snow. On Sunday morning, following a night of very few clouds, it will be sunny over widespread areas. Starting at midday, convective cloud build-up is anticipated, occasional showers are possible. Particularly in northern regions, the NW winds will strengthen in exposed terrain. Temperatures will recede somewhat. At 2000 m: about +2 degrees; at 1500 m, between +5 and +8 degrees. On Monday, increasingly gray skies, temperatures will drop somewhat. The wet-snow problem will diminish.