link Link to website https://avalanche.report/bulletin/2020-12-30 simple_link Link to the simplified website https://avalanche.report/simple/2020-12-30/en.html fd_albina_map.jpg Danger rating map (whole day) https://avalanche.report/albina_files/2020-12-30/2020-12-29_16-16-57/fd_albina_map.jpg fd_tyrol_map.jpg Danger rating map Tirol (whole day) https://avalanche.report/albina_files/2020-12-30/2020-12-29_16-16-57/fd_tyrol_map.jpg fd_southtyrol_map.jpg Danger rating map Southtyrol (whole day) https://avalanche.report/albina_files/2020-12-30/2020-12-29_16-16-57/fd_southtyrol_map.jpg fd_trentino_map.jpg Danger rating map Trentino (whole day) https://avalanche.report/albina_files/2020-12-30/2020-12-29_16-16-57/fd_trentino_map.jpg pdf PDF https://avalanche.report/albina_files/2020-12-30/2020-12-29_16-16-57/2020-12-30_en.pdf tyrol_pdf PDF Tirol https://avalanche.report/albina_files/2020-12-30/2020-12-29_16-16-57/2020-12-30_AT-07_en.pdf southtyrol_pdf PDF Southtyrol https://avalanche.report/albina_files/2020-12-30/2020-12-29_16-16-57/2020-12-30_IT-32-BZ_en.pdf trentino_pdf PDF Trentino https://avalanche.report/albina_files/2020-12-30/2020-12-29_16-16-57/2020-12-30_IT-32-TN_en.pdf fd_overlay.png Danger rating overlay (whole day) https://avalanche.report/albina_files/2020-12-30/2020-12-29_16-16-57/fd_overlay.png fd_regions.json GeoJSON for regions (whole day) https://avalanche.report/albina_files/2020-12-30/2020-12-29_16-16-57/fd_regions.json dangerRatingMap Simplified danger rating map of the region https://avalanche.report/albina_files/2020-12-30/2020-12-29_16-16-57/8262a895-396a-45de-889e-bf0b5f4e3e0d.jpg website Link to region on the website https://avalanche.report/bulletin/2020-12-30?region=8262a895-396a-45de-889e-bf0b5f4e3e0d 2020-12-29T16:16:57Z 2020-12-29T23:00:00Z 2020-12-30T23:00:00Z Avalanche.report https://avalanche.report Eastern Deferegger Alps Schober Mountains Lienzer Dolomites high treeline no_rating no_rating considerable treeline no_rating no_rating dp6 dp4 wind_drifted_snow N SE S NW SW E W NE treeline high high 2 4 3 wind_drifted_snow N NW SE S SW E W NE treeline considerable considerable 2 4 2 steady 2020-12-30T23:00:00Z 2020-12-31T23:00:00Z Outside marked and open pistes a precarious avalanche situation will be encountered over a wide area. As a consequence of new snow and a strong wind from southerly directions, easily released wind slabs will form since Monday over a wide area. In addition in all aspects, further individual medium-sized to large natural dry avalanches are to be expected. In the regions exposed to a lot of wind this applies in particular on steep slopes, also below the tree line. The prevalence of avalanche prone locations and likelihood of triggering will increase with altitude. Extensive experience in the assessment of avalanche danger and great restraint are required. The danger exists in particular in alpine snow sports terrain. Over a wide area 30 to 40 cm of snow, and up to 60 cm in some localities, has fallen. As a consequence of a strong wind from southwesterly directions, avalanche prone wind slabs will form in all aspects. Over a wide area wind slabs are lying on soft layers, this also applies below the tree line. The fresh wind slabs are lying on surface hoar in some places in areas close to the tree line. The old snowpack is largely stable. Outside marked and open pistes a precarious avalanche situation will prevail. Fresh wind slabs are to be avoided. dangerRatingMap Simplified danger rating map of the region https://avalanche.report/albina_files/2020-12-30/2020-12-29_16-16-57/27bcafed-e141-4d7f-a5b2-d320d01b9ffc.jpg website Link to region on the website https://avalanche.report/bulletin/2020-12-30?region=27bcafed-e141-4d7f-a5b2-d320d01b9ffc 2020-12-29T16:16:57Z 2020-12-29T23:00:00Z 2020-12-30T23:00:00Z Avalanche.report https://avalanche.report Val Müstair Alps Langtaufers Western Verwall Mountains 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 considerable treeline no_rating no_rating moderate treeline no_rating no_rating dp6 dp1 wind_drifted_snow N SE S NW SW E W NE treeline considerable considerable 2 3 3 persistent_weak_layers N NW NE 2200 moderate moderate 3 3 1 wind_drifted_snow N NW NE treeline moderate moderate 2 3 2 steady 2020-12-30T23:00:00Z 2020-12-31T23:00:00Z Wind slabs are to be evaluated critically. Fresh wind slabs represent the main danger. The fresh and somewhat older wind slabs can be released easily, even by a single winter sport participant, in all aspects, caution is to be exercised in particular adjacent to ridgelines and in gullies and bowls. Mostly the avalanches are medium-sized. The number and size of avalanche prone locations will increase with altitude. <br/> Weak layers in the lower part of the snowpack can still be released in isolated cases by individual winter sport participants. Caution is to be exercised in particular on steep shady slopes above approximately 2200 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. The strong wind has transported the fresh and old snow significantly. In many cases wind slabs are lying on soft layers, also below the tree line. The wind slabs will be deposited on surface hoar in some places at intermediate and high altitudes. Snow profiles confirm this situation. <br/> Steep shady slopes: The old snowpack will be prone to triggering in some places. Towards its base, the snowpack is faceted and weak. Whumpfing sounds and the formation of shooting cracks when stepping on the snowpack are a clear indication of a weakly bonded snowpack. Fresh wind slabs are to be evaluated with care and prudence. dangerRatingMap Simplified danger rating map of the region https://avalanche.report/albina_files/2020-12-30/2020-12-29_16-16-57/69514aba-964f-4fd1-80a9-8017d74b7bc2.jpg website Link to region on the website https://avalanche.report/bulletin/2020-12-30?region=69514aba-964f-4fd1-80a9-8017d74b7bc2 2020-12-29T16:16:57Z 2020-12-29T23:00:00Z 2020-12-30T23:00:00Z Avalanche.report https://avalanche.report Sexten Dolomites Latemar Schnals Ridge Southern Stubai Alps Southern Zillertal Alps and High Tauern Saldurn-Mastaun Ridge Texel Mountains Southern Adamello Sarntal Alps Adamello - Presanella Western Pfunderer Mountains Northern Brenta - Peller Bondone and Stivo Folgaria - Laverone Southern Brenta Southern Lagorai Northern Lagorai Maddalene Pine' - Mocheni Valley Eastern Pfunderer Mountains Durreck Range Western Rieserferner Mountains Weißkugel Range Western Deferegger Alps Gurgler Range Ortler Range Central Stubai Alps Ulten Valley Northern Zillertal Alps Eastern Nonsberger Alps Venediger Range Northern Dolomites of Fiemme Eastern Rieserferner Mountains Gröden Dolomites Primiero - Pale di S. Martino Glockner Range Prags Dolomites Prealps Cembra Valley Vallarsa Western Nonsberg Alps Fassa Valley Sole, Pejo and Rabbi Ledro Valley Paganella Marzola - Valsugana considerable 1800 no_rating no_rating moderate 1800 no_rating no_rating dp6 wind_drifted_snow N SE S NW SW E W NE 1800 considerable considerable 3 3 3 wind_drifted_snow N NW SE S SW E W NE 1800 moderate moderate 2 3 2 steady 2020-12-30T23:00:00Z 2020-12-31T23:00:00Z New snow and wind slabs require caution. On wind-loaded slopes a critical avalanche situation will be encountered over a wide area. The fresh and somewhat older wind slabs can be released easily. or in isolated cases naturally, in all aspects. Caution is to be exercised in particular adjacent to ridgelines and in gullies and bowls. In some cases the avalanches are large. The prevalence of avalanche prone locations and likelihood of triggering will increase with altitude. Caution and restraint are required. 20 to 40 cm of snow, and even more in some localities, has fallen. As a consequence of a strong wind from southwesterly directions, avalanche prone wind slabs formed in all aspects. Stability tests and field observations confirm this situation. In many cases wind slabs are lying on soft layers, this also applies below the tree line. The fresh wind slabs are lying on surface hoar in some places at intermediate and high altitudes. In its middle, the snowpack is well consolidated. Towards its base, the snowpack is faceted, especially on shady slopes above the tree line, as well as in all aspects in high Alpine regions. Fresh wind slabs are to be evaluated with care and prudence. dangerRatingMap Simplified danger rating map of the region https://avalanche.report/albina_files/2020-12-30/2020-12-29_16-16-57/6f80f3ea-3cba-4b66-92cb-e579b573a528.jpg website Link to region on the website https://avalanche.report/bulletin/2020-12-30?region=6f80f3ea-3cba-4b66-92cb-e579b573a528 2020-12-29T16:16:57Z 2020-12-29T23:00:00Z 2020-12-30T23:00:00Z Avalanche.report https://avalanche.report Brandenberg Alps Western Kitzbühel Alps Wilder Kaiser Mountains - Waidring Alps Eastern Kitzbühel Alps moderate treeline no_rating no_rating low treeline no_rating no_rating dp6 wind_drifted_snow N NW NE treeline moderate moderate 2 3 2 steady 2020-12-30T23:00:00Z 2020-12-31T23:00:00Z Wind slabs are to be evaluated with care and prudence. The fresh and somewhat older wind slabs are in some cases prone to triggering above the tree line, especially adjacent to ridgelines and in gullies and bowls. Mostly avalanches are only small but can be released also by a single winter sport participant. The prevalence of avalanche prone locations and likelihood of triggering will increase with altitude. As a consequence of new snow and a strong wind from variable directions, mostly small wind slabs will form above the tree line. In some places wind slabs are lying on soft layers, especially adjacent to ridgelines and in gullies and bowls. The avalanche danger will persist.