2021-04-25T16:00:00+00:00 avalanche-warnings.eu 2021-04-25T22:00:00+00:00 2021-04-26T22:00:00+00:00 2021-04-25T22:00:00+00:00 2021-04-26T10:00:00+00:00 1 2021-04-26T10:00:00+00:00 2021-04-26T22:00:00+00:00 1 2021-04-25T22:00:00+00:00 2021-04-26T10:00:00+00:00 1 2021-04-26T10:00:00+00:00 2021-04-26T22:00:00+00:00 2 wet snow due to solar radiation and daytime warmth below 2000 m old snow isolated, in high altitude shady terrain Loss of snowpack firmness leading to minor daytime cycle of avalanche danger Avalanche danger below 2000 m will increase to moderate during the course of the day. With intensifying solar radiation and daytime warming, as well as some rainfall, the danger of wet-snow avalanches will increase on very steep slopes. Below additional loading, dry-snow slab avalanches are triggerable (wet-snow problem), but are limited to shady ridgeline and steep slopes at high altitude. Skies on Sunday night will be only slightly cloudy, thus the snowpack surface will form a melt-freeze crust of varying firmness depending on altitude, and aspect. During the daytime on Monday, solar radiation, diffuse light, warmth and some rainfall will make the surface moist. The snow will lose its firmness, at low and intermediate altitudes it will become heavy, at low altitudes wet and rotten. At high altitudes in shady terrain, and reserves of cold, the snow is often wind-compacted but 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. After a only slightly cloudy night, particularly in northern regions, increase cloud will move in on the southern flank of the Alps starting in early morning, bringing rain and snow showers. On the northern flank of the Alps, initially light cloud and no precipitation, later on the clouds will extend from the south and showers can occur. The snowfall level will ascend during the course of the day. At 2000 m: between 0 and -3 degrees; at 1500 m at +2 degrees. Winds will be southerly, mostly moderate, brisker in the northeastern regions. On Tuesday, instable conditions in the southern regions in particular, susceptible to showers. In the northern regions, more pleasant conditions. The SE winds will often be strong. Temperatures will be somewhat lower. No significant change in avalanche danger is expected. 2021-04-25T16:00:00+00:00 avalanche-warnings.eu 2021-04-25T22:00:00+00:00 2021-04-26T22:00:00+00:00 1 wet snow due to solar radiation and daytime warming Low avalanche danger In very steep terrain in isolated spots, increasing danger of wet loose-snow avalanches due to solar radiation, warming, rainfall, during the course of the day On Sunday night, slightly cloudy skies, the snowpack will regain firmness to varying degrees. The snow will increasingly lose its firmness and stability, become heavy and/or wet. The slopes are becoming increasingly bare. On the southern flank of the Alps, heavy cloud as of early morning, with rain and snow showers. The snowfall level will ascend during the day. At midday at 2000 m: between 0 and -3 degrees; at 1500 m: +2 degrees. Southerly winds will be mostly moderate. On Tuesday, instable conditions in the southern regions in particular, susceptible to showers. In the northern regions, more pleasant conditions. The SE winds will often be strong. Temperatures will be somewhat lower. No significant change in avalanche danger is expected.