link Link to website https://avalanche.report/bulletin/2020-12-20 simple_link Link to the simplified website https://avalanche.report/simple/2020-12-20/en.html fd_albina_map.jpg Danger rating map (whole day) https://avalanche.report/albina_files/2020-12-20/2020-12-19_16-00-00/fd_albina_map.jpg fd_tyrol_map.jpg Danger rating map Tirol (whole day) https://avalanche.report/albina_files/2020-12-20/2020-12-19_16-00-00/fd_tyrol_map.jpg fd_southtyrol_map.jpg Danger rating map Southtyrol (whole day) https://avalanche.report/albina_files/2020-12-20/2020-12-19_16-00-00/fd_southtyrol_map.jpg fd_trentino_map.jpg Danger rating map Trentino (whole day) https://avalanche.report/albina_files/2020-12-20/2020-12-19_16-00-00/fd_trentino_map.jpg pdf PDF https://avalanche.report/albina_files/2020-12-20/2020-12-19_16-00-00/2020-12-20_en.pdf tyrol_pdf PDF Tirol https://avalanche.report/albina_files/2020-12-20/2020-12-19_16-00-00/2020-12-20_AT-07_en.pdf southtyrol_pdf PDF Southtyrol https://avalanche.report/albina_files/2020-12-20/2020-12-19_16-00-00/2020-12-20_IT-32-BZ_en.pdf trentino_pdf PDF Trentino https://avalanche.report/albina_files/2020-12-20/2020-12-19_16-00-00/2020-12-20_IT-32-TN_en.pdf fd_overlay.png Danger rating overlay (whole day) https://avalanche.report/albina_files/2020-12-20/2020-12-19_16-00-00/fd_overlay.png fd_regions.json GeoJSON for regions (whole day) https://avalanche.report/albina_files/2020-12-20/2020-12-19_16-00-00/fd_regions.json dangerRatingMap Simplified danger rating map of the region https://avalanche.report/albina_files/2020-12-20/2020-12-19_16-00-00/d35bab97-7c07-4ee6-9d6b-e6c51b75b05d.jpg website Link to region on the website https://avalanche.report/bulletin/2020-12-20?region=d35bab97-7c07-4ee6-9d6b-e6c51b75b05d 2020-12-19T16:00:00Z 2020-12-19T23:00:00Z 2020-12-20T23:00:00Z Avalanche.report https://avalanche.report Southern Adamello Primiero - Pale di S. Martino Adamello - Presanella Northern Brenta - Peller Southern Brenta Fassa Valley Southern Lagorai Sole, Pejo and Rabbi Northern Lagorai Latemar Maddalene moderate treeline no_rating no_rating moderate treeline no_rating no_rating dp2 dp6 wind_drifted_snow N W NW NE E treeline moderate moderate 3 2 2 gliding_snow S W SE E SW 2600 moderate moderate 1 2 persistent_weak_layers N NW NE 2500 moderate moderate 3 2 1 steady 2020-12-20T23:00:00Z 2020-12-21T23:00:00Z Old wind slabs represent the main danger. Individual gliding avalanches can also occur. The sometimes large wind slabs remain in some cases prone to triggering in particular on west to north to east facing aspects above the tree line. They can be released by large loads at their margins in particular. <br/> On very steep grassy slopes and on sunny slopes only isolated gliding avalanches are possible, even quite large ones. Caution is to be exercised in areas with glide cracks. <br/> In isolated cases avalanches can be triggered in deep layers of the snowpack and reach quite a large size. This applies in case of releases originating from very steep starting zones at high altitudes and in high Alpine regions that have retained the snow thus far. Caution is to be exercised in particular at transitions from a shallow to a deep snowpack. The snowpack will be quite well bonded. More recent wind slabs are to be found in particular in gullies and bowls, and behind abrupt changes in the terrain. In some cases the various wind slabs have bonded poorly together. This applies at high altitudes and in high Alpine regions. Towards its surface, the snowpack is soft and its surface consists of surface hoar. Faceted weak layers exist deep in the old snowpack especially at high altitudes and in high Alpine regions. Towards its base, the snowpack is moist. This applies especially at low and intermediate altitudes. The avalanche danger will persist. Individual gliding avalanches can also be released in the night. dangerRatingMap Simplified danger rating map of the region https://avalanche.report/albina_files/2020-12-20/2020-12-19_16-00-00/851537a6-c3fb-4e5d-9056-cdb5f5fe8057.jpg website Link to region on the website https://avalanche.report/bulletin/2020-12-20?region=851537a6-c3fb-4e5d-9056-cdb5f5fe8057 2020-12-19T16:00:00Z 2020-12-19T23:00:00Z 2020-12-20T23:00:00Z Avalanche.report https://avalanche.report Prealps Cembra Valley Bondone and Stivo Vallarsa Western Nonsberg Alps Folgaria - Laverone Ledro Valley Paganella Marzola - Valsugana Pine' - Mocheni Valley moderate no_rating no_rating dp2 gliding_snow S W SE E SW moderate moderate 1 2 wind_drifted_snow N W NW NE treeline moderate moderate 2 2 2 steady 2020-12-20T23:00:00Z 2020-12-21T23:00:00Z As a consequence of warming during the day and solar radiation individual gliding avalanches are possible from midday. More gliding avalanches are possible, even medium-sized ones. <br/> The no longer entirely fresh wind slabs remain in some cases prone to triggering especially on west to north to northeast facing aspects at high altitude. The number and size of avalanche prone locations will increase with altitude. <br/> Ski touring calls for experience and a certain restraint. The snowpack is fairly homogeneous and its surface has a crust that is not capable of bearing a load. Towards its base, the snowpack is moist, especially at low and intermediate altitudes. The avalanche danger will persist. dangerRatingMap Simplified danger rating map of the region https://avalanche.report/albina_files/2020-12-20/2020-12-19_16-00-00/e7579d4e-f5d1-449d-8925-d16aed2c8759.jpg website Link to region on the website https://avalanche.report/bulletin/2020-12-20?region=e7579d4e-f5d1-449d-8925-d16aed2c8759 2020-12-19T16:00:00Z 2020-12-19T23:00:00Z 2020-12-20T23:00:00Z Avalanche.report https://avalanche.report Texel Mountains Ortler Range Schnals Ridge Southern Stubai Alps Ulten Valley Southern Zillertal Alps and High Tauern Saldurn-Mastaun Ridge moderate 2400 no_rating no_rating moderate 2400 no_rating no_rating dp2 persistent_weak_layers N W NW NE 2400 moderate moderate 2 3 2 gliding_snow S SE SW 2600 moderate moderate 1 2 steady 2020-12-20T23:00:00Z 2020-12-21T23:00:00Z High Alpine regions: Weakly bonded old snow requires caution. In addition further gliding avalanches are possible. Avalanche prone weak layers exist deeper in the snowpack on steep shady slopes. Avalanches can in some cases be released by people and reach large size. The prevalence of the avalanche prone locations will increase with altitude. Caution is to be exercised at transitions from a shallow to a deep snowpack. In the Ortler Range the avalanche prone locations are more prevalent and the danger is greater. <br/> On very steep grassy slopes and on sunny slopes only isolated gliding avalanches are possible, even quite large ones. Exposed parts of transportation routes can be endangered occasionally in the regions with a lot of snow. As a consequence of mild temperatures the snowpack settled. The snowpack is largely stable. Towards its surface, the snowpack is fairly homogeneous and its surface has a melt-freeze crust that is barely capable of bearing a load, in particular on steep sunny slopes as well as at low and intermediate altitudes. <br/> High altitudes and the high Alpine regions: Towards its base, the snowpack is faceted and weak, especially on steep shady slopes, as well as adjacent to ridgelines and in gullies and bowls. The somewhat older wind slabs are in individual cases still prone to triggering. The avalanche danger will persist. dangerRatingMap Simplified danger rating map of the region https://avalanche.report/albina_files/2020-12-20/2020-12-19_16-00-00/c1c2a1e7-6143-403d-8d19-b05df9f7c40d.jpg website Link to region on the website https://avalanche.report/bulletin/2020-12-20?region=c1c2a1e7-6143-403d-8d19-b05df9f7c40d 2020-12-19T16:00:00Z 2020-12-19T23:00:00Z 2020-12-20T23:00:00Z Avalanche.report https://avalanche.report Val Müstair Alps Western Verwall Mountains Langtaufers Eastern Verwall Mountains Allgäu Alps Silvretta Samnaun Mountains Eastern Lechtal Alps - Ammergau Alps Northern Oetz and Stubai Alps Mieming Mountains Western Tuxer Alps Karwendel Mountains Eastern Tuxer Alps Western Lechtal Alps Central Lechtal Alps Glockturm Range Grieskogel Mountains moderate 2200 no_rating no_rating low 2200 no_rating no_rating dp1 dp7 persistent_weak_layers N NW NE 2200 moderate moderate 3 3 1 steady 2020-12-20T23:00:00Z 2020-12-21T23:00:00Z Weak layers in the lower part of the snowpack necessitate defensive route selection. Distinct weak layers in the lower part of the snowpack can be released by individual winter sport participants. Caution is to be exercised in particular on steep shady slopes above approximately 2200 m, as well as on steep sunny slopes above approximately 3000 m, especially in areas where the snow cover is rather shallow, as well as at transitions from a shallow to a deep snowpack, when entering gullies and bowls for example. Avalanches can be triggered in the faceted old snow and reach a dangerous size. These avalanche prone locations are difficult to recognise. In the regions with a lot of snow the situation is more favourable. <br/> As a consequence of a moderate to strong wind, mostly small wind slabs formed in isolated cases. This applies especially on very steep shady slopes in the regions that are exposed to the foehn wind. <br/> The current avalanche situation calls for meticulous route selection. Steep shady slopes: The old snowpack will be prone to triggering in some places. Towards its surface, the snowpack is fairly homogeneous and has a loosely bonded surface. Towards its base, the snowpack is faceted and weak. Released avalanches and stability tests confirm the unfavourable bonding of the snowpack. Whumpfing sounds and the formation of shooting cracks when stepping on the snowpack are a clear indication of a weakly bonded snowpack. As a consequence of a moderate to strong wind, mostly small wind slabs formed in particular adjacent to ridgelines. <br/> Very steep sunny slopes as well as low and intermediate altitudes: The snowpack is largely stable and its surface has a melt-freeze crust that is strong in many cases. <br/> East and west facing slopes: The snowpack is largely stable and its surface has a melt-freeze crust that is not capable of bearing a load. Faceted weak layers exist deep in the snowpack above approximately 3000 m. The avalanche danger will persist. dangerRatingMap Simplified danger rating map of the region https://avalanche.report/albina_files/2020-12-20/2020-12-19_16-00-00/ea29918b-f90c-456b-abd7-6fab758c3769.jpg website Link to region on the website https://avalanche.report/bulletin/2020-12-20?region=ea29918b-f90c-456b-abd7-6fab758c3769 2020-12-19T16:00:00Z 2020-12-19T23:00:00Z 2020-12-20T23:00:00Z Avalanche.report https://avalanche.report Sexten Dolomites Eastern Pfunderer Mountains Durreck Range Western Rieserferner Mountains Western Deferegger Alps Venediger Range Eastern Nonsberger Alps Eastern Rieserferner Mountains Northern Dolomites of Fiemme Glockner Range Gröden Dolomites Eastern Deferegger Alps Prags Dolomites Sarntal Alps Schober Mountains Western Pfunderer Mountains Lienzer Dolomites low 2600 no_rating no_rating moderate 2600 no_rating no_rating dp2 gliding_snow S SE SW 2600 moderate moderate 1 3 steady 2020-12-20T23:00:00Z 2020-12-21T23:00:00Z Caution is to be exercised in areas with glide cracks. The danger of gliding avalanches will persist. On very steep grassy slopes and on sunny slopes more gliding avalanches are possible, even quite large ones. Areas with glide cracks are to be avoided. <br/> Fresh and somewhat older wind slabs can be released in isolated cases on very steep shady slopes in high Alpine regions. This applies in particular adjacent to ridgelines. As a consequence of mild temperatures the snowpack settled. The snowpack is largely stable and its surface has a melt-freeze crust that is strong in many cases, in particular on very steep sunny slopes, as well as at low and intermediate altitudes. East and west facing slopes: The surface of the snowpack is frozen, but not to a significant depth. <br/> Towards its base, the snowpack is faceted. This applies on steep shady slopes above the tree line, as well as on sunny slopes in high Alpine regions. The avalanche danger will persist. dangerRatingMap Simplified danger rating map of the region https://avalanche.report/albina_files/2020-12-20/2020-12-19_16-00-00/2c30b045-a5ed-43e2-9b17-a7528c537b23.jpg website Link to region on the website https://avalanche.report/bulletin/2020-12-20?region=2c30b045-a5ed-43e2-9b17-a7528c537b23 2020-12-19T16:00:00Z 2020-12-19T23:00:00Z 2020-12-20T23:00:00Z Avalanche.report https://avalanche.report Brandenberg Alps Western Kitzbühel Alps Wilder Kaiser Mountains - Waidring Alps Eastern Kitzbühel Alps low no_rating no_rating steady 2020-12-20T23:00:00Z 2020-12-21T23:00:00Z Low, level 1. Low, level 1. At low and intermediate altitudes from a snow sport perspective, in most cases insufficient snow is lying. At low and intermediate altitudes hardly any snow is lying. At higher altitudes a little snow is lying. The snowpack is largely stable. A generally favourable avalanche situation will prevail. dangerRatingMap Simplified danger rating map of the region https://avalanche.report/albina_files/2020-12-20/2020-12-19_16-00-00/6c1b3c58-7d0d-4b06-a71d-675a27b02540.jpg website Link to region on the website https://avalanche.report/bulletin/2020-12-20?region=6c1b3c58-7d0d-4b06-a71d-675a27b02540 2020-12-19T16:00:00Z 2020-12-19T23:00:00Z 2020-12-20T23:00:00Z Avalanche.report https://avalanche.report Weißkugel Range Gurgler Range Central Stubai Alps Northern Zillertal Alps low no_rating no_rating steady 2020-12-20T23:00:00Z 2020-12-21T23:00:00Z The avalanche conditions are mostly favourable. Fresh and somewhat older wind slabs can be released in isolated cases on very steep shady slopes in high Alpine regions. This applies especially adjacent to ridgelines. They are mostly only small. <br/> On very steep grassy slopes and on sunny slopes only isolated gliding avalanches are possible. Areas with glide cracks are to be avoided. As a consequence of mild temperatures the snowpack settled. The snowpack is largely stable and its surface has a melt-freeze crust that is strong in many cases, in particular on very steep sunny slopes, as well as at low and intermediate altitudes. East and west facing slopes: The surface of the snowpack is frozen, but not to a significant depth. <br/> Towards its base, the snowpack is faceted. This applies on shady slopes above the tree line, as well as on sunny slopes in high Alpine regions. <br/> As a consequence of a sometimes strong wind, mostly small wind slabs formed in particular adjacent to ridgelines. The avalanche conditions are mostly favourable.