2021-12-03T17:00:00+00:00 avalanche-warnings.eu 2021-12-03T23:00:00+00:00 2021-12-04T23:00:00+00:00 2 1 drifting snow near ridgelines, mostly small-sized wet snow superficial loose-snow avalanches and isolated glide-snow avalanches in extremely steep terrain AVOID snowdrift accumulations near ridgelines Avalanche danger is LOW, but in the exposed zones near ridgelines MODERATE. Dangers are focused on steep zones near ridgelines in extended northern aspects (W/N/W) where fresh drifts can often be easily triggered. Small-to-medium sized slabs are possible. Naturally triggered shallow loose-snow avalanches (small-sized) in steep terrain and, on grassy slopes, isolated glide-snow avalanches are possible. The cold fresh snow from Thursday daytime and Thursday night (10-20 cm) will be transported by southerly winds to north-facing slopes on Friday. The freshly generated drifts will lie atop cold and loose snow. At low and intermediate altitudes the snow will become superficially moist. The old snow beneath it is relatively compact and evidences no pronounced weak layers. The snowpack is gliding somewhat over the warm, smooth ground. Overcast skies from the start. Summits are free of cloud, only the highest peaks are in fog. Further north, intermittent snowfall is possible, snowfall level ascending to over 1600 m. At 1500 m, temperatures rising to +2 degrees; at 2000 m to +1 degree. Southerly winds at 30-40 km/hr will prevail above the timberline. On Saturday night and during the daytime on Sunday, 10-20 cm of fresh snow is anticipated. On Sunday the peaks will often be veiled in cloud, intermittent snowfall is anticipated. At high altitudes, a strong NW wind will be blowing which will slacken off somewhat in the afternoon. Temperatures will drop: at 2000 m to -9 degrees. As a result of fresh snow and westerly winds, fresh snowdrifts will accumulate. Avalanche danger levels will rise. 2021-12-03T17:00:00+00:00 avalanche-warnings.eu 2021-12-03T23:00:00+00:00 2021-12-04T23:00:00+00:00 3 2 drifting snow near to and distant from ridgelines, wide-ranging in foehn lanes wet snow superficial loose-snow avalanches and isolated glide-snow avalanches in extremely steep terrain Caution! Wide ranging foehn-induced snowdrifts in places - easily triggered! Restraint is imperative. Foehn winds are changing the conditions before our eyes, avalanche prone locations are different from what they were yesterday. Above the timberline, fresh snowdrifts are easily triggered, even the impulse of one sole person can trigger a medium-to-large slab avalanche. All aspects are treacherous, but particularly the northern aspects (W/N/E). Due to windblown terrain and high degree of roughness of the ground, the danger zones can easily be underestimated. Second danger: very steep terrain, where small-to-medium superficial loose-snow avalanches and isolated glide-snow avalanches can trigger naturally as a result of the higher temperatures. The cold fresh snow from Thursday daytime and Thursday night (20-40 cm) will be transported by southerly winds to north-facing slopes on Friday. The freshly generated drifts will lie atop cold and loose snow. At low and intermediate altitudes the snow will become superficially moist. Starting at 2200 m, there is a thin fracturable melt-freeze crust from mid-November (old-snow problem) at least in extended northern aspects. Overcast skies from the start. Summits are free of cloud, only the highest peaks are in fog. Further north, intermittent snowfall is possible. At 2000 m temperatures rising to +1 degree, at 3000 m to -6 degrees. Southerly winds at 40-60 km/hr will prevail. On Saturday night and during the daytime on Sunday, 20-30 cm of fresh snow is anticipated. On Sunday the peaks will often be veiled in cloud, intermittent snowfall is anticipated. At high altitudes, a strong NW wind will be blowing (40-60 km/hr) which will slacken off somewhat in the afternoon. Temperatures will drop: at 2000 m to -9 degrees, at 3000 m -16 degrees. Unchanged: great caution urged! As a result of fresh snow and westerly winds, fresh and wide-ranging snowdrift masses will form, deposited again on east-facing and south-facing slopes. 2021-12-03T17:00:00+00:00 avalanche-warnings.eu 2021-12-03T23:00:00+00:00 2021-12-04T23:00:00+00:00 3 1 drifting snow near to and distant from ridgelines wet snow Foehn wind generating fresh snowdrifts onto north-facing slopes Fresh snowdrifts occur as of the timberline in places. Starting at 2000 m in northern aspects they are easily triggered. The impulse of one single person can trigger a medium-to-large slab avalanche. Especially treacherous are W/N/E aspects. Due to windblown terrain and the generally rough ground in backcountry touring zones, avalanche prone locations are easy to underestimate. Second danger: very steep terrain, where small-to-medium superficial loose-snow avalanches and isolated glide-snow avalanches can trigger naturally as a result of the higher temperatures. The cold fresh snow from Thursday daytime and Thursday night (15-30 cm) will be transported by southerly winds to north-facing slopes on Friday. In classic foehn lanes these will be deposited atop cold and loosely-packed snow. At low and intermediate altitudes the snow will become superficially moist. Overcast skies from the start. Summits are free of cloud, only the highest peaks are in fog. Further north, intermittent snowfall is possible, snowfall level ascending to over 1600 m. At 2000 m temperatures rising to +1 degree, at 3000 m to -6 degrees. Southerly winds at 40 km/hr will prevail above 2000 m. On Saturday night and during the daytime on Sunday, 10-20 cm of fresh snow is anticipated. On Sunday the peaks will often be veiled in cloud, intermittent snowfall is anticipated. At high altitudes, a strong NW wind will be blowing (40-60 km/hr) which will slacken off somewhat in the afternoon. Temperatures will drop: at 2000 m to -9 degrees. As a result of fresh snowfall and westerly winds, fresh snowdrift accumulations will be generated. Avalanche danger levels will increase. 2021-12-03T17:00:00+00:00 avalanche-warnings.eu 2021-12-03T23:00:00+00:00 2021-12-04T23:00:00+00:00 2 1 drifting snow near ridgelines, mostly small wet snow superficial loose-snow avalanches and isolated glide-snow avalanches in extremely steep terrain AVOID ridgeline snowdrift accumulations Avalanche danger is LOW, but in the exposed zones near ridgelines MODERATE. Dangers are focused on steep zones near ridgelines in extended northern aspects (W/N/W) where the fresh drifts can often be easily triggered. Small-to-medium sized slabs are possible. Naturally triggered shallow loose-snow avalanches (small-sized) in steep terrain and, on grassy slopes, isolated glide-snow avalanches are possible. The cold fresh snow from Thursday daytime and Thursday night (10-20 cm) will be transported by southerly winds to north-facing ridgeline sectors on Friday. The freshly generated drifts will lie atop cold and loose snow. At low and intermediate altitudes the snow will become superficially moist. The old snow beneath it is relatively compact and evidences no pronounced weak layers. The snowpack is gliding somewhat over the warm, smooth ground. Overcast skies from the start. Summits are free of cloud, only the highest peaks are in fog, a bit of sunshine is possible. Later on, intermittent snowfall is possible. At 2000 m temperatures rising to +1 degree, at 3000 m to -6 degrees. Southerly winds at 40 km/hr will prevail. On Saturday night and during the daytime on Sunday, 10-20 cm of fresh snow is anticipated. On Sunday the peaks will often be veiled in cloud, intermittent snowfall is anticipated. At high altitudes, a strong NW wind will be blowing (40-50 km/hr) which will slacken off somewhat in the afternoon. Temperatures will drop: at 2000 m to -9 degrees, at 3000 m, -6 degrees. As a result of fresh snow and NW winds, fresh snowdrifts will accumulate. Avalanche danger levels will rise.