link Link to website https://avalanche.report/bulletin/2021-12-18 simple_link Link to the simplified website https://avalanche.report/simple/2021-12-18/en.html fd_albina_map.jpg Danger rating map (whole day) https://avalanche.report/albina_files/2021-12-18/2021-12-17_16-00-00/fd_albina_map.jpg fd_tyrol_map.jpg Danger rating map Tirol (whole day) https://avalanche.report/albina_files/2021-12-18/2021-12-17_16-00-00/fd_tyrol_map.jpg fd_southtyrol_map.jpg Danger rating map Southtyrol (whole day) https://avalanche.report/albina_files/2021-12-18/2021-12-17_16-00-00/fd_southtyrol_map.jpg fd_trentino_map.jpg Danger rating map Trentino (whole day) https://avalanche.report/albina_files/2021-12-18/2021-12-17_16-00-00/fd_trentino_map.jpg pdf PDF https://avalanche.report/albina_files/2021-12-18/2021-12-17_16-00-00/2021-12-18_en.pdf tyrol_pdf PDF Tirol https://avalanche.report/albina_files/2021-12-18/2021-12-17_16-00-00/2021-12-18_AT-07_en.pdf southtyrol_pdf PDF Southtyrol https://avalanche.report/albina_files/2021-12-18/2021-12-17_16-00-00/2021-12-18_IT-32-BZ_en.pdf trentino_pdf PDF Trentino https://avalanche.report/albina_files/2021-12-18/2021-12-17_16-00-00/2021-12-18_IT-32-TN_en.pdf fd_overlay.png Danger rating overlay (whole day) https://avalanche.report/albina_files/2021-12-18/2021-12-17_16-00-00/fd_overlay.png fd_regions.json GeoJSON for regions (whole day) https://avalanche.report/albina_files/2021-12-18/2021-12-17_16-00-00/fd_regions.json dangerRatingMap Simplified danger rating map of the region https://avalanche.report/albina_files/2021-12-18/2021-12-17_16-00-00/46c1365c-3516-4c27-a54a-2afd4095e08b.jpg website Link to region on the website https://avalanche.report/bulletin/2021-12-18?region=46c1365c-3516-4c27-a54a-2afd4095e08b 2021-12-17T16:00:00Z 2021-12-17T23:00:00Z 2021-12-18T23:00:00Z Avalanche.report https://avalanche.report Durreck Range Weißkugel Range Western Rieserferner Mountains Val Müstair Alps Gurgler Range Langtaufers Central Stubai Alps Ortler Range Schnals Ridge Northern Zillertal Alps Southern Stubai Alps Venediger Range Southern Zillertal Alps and High Tauern Eastern Rieserferner Mountains Saldurn-Mastaun Ridge Glockner Range Texel Mountains Glockturm Range considerable 2400 no_rating no_rating moderate 2400 no_rating no_rating dp6 dp1 persistent_weak_layers NE E NW W N 2400 considerable considerable 3 3 2 wind_drifted_snow NE E NW W N treeline moderate moderate 2 3 2 steady 2021-12-18T23:00:00Z 2021-12-19T23:00:00Z Weakly bonded old snow requires caution. Fresh wind slabs are to be evaluated with care and prudence. Weak layers in the old snowpack can still be released by individual winter sport participants. Caution is to be exercised in particular on steep shady slopes above approximately 2400 m, as well as on steep sunny slopes in high Alpine regions. In particular transitions from a shallow to a deep snowpack are especially unfavourable. Remotely triggered avalanches are possible in isolated cases. In isolated cases avalanches are large. Whumpfing sounds and the formation of shooting cracks when stepping on the snowpack indicate poor snowpack stability. The avalanche prone locations are but are barely recognisable, even to the trained eye. Defensive route selection is appropriate. <br/> The fresh wind slabs are in some cases prone to triggering, in particular on steep shady slopes above the tree line, as well as in all aspects at elevated altitudes. <br/> On very steep sunny slopes wet and gliding avalanches are possible as the day progresses. Distinct weak layers in the old snowpack confirm the complex avalanche situation on steep shady slopes. In its middle, the snowpack is faceted and weak, in particular on shady slopes above approximately 2400 m, as well as on sunny slopes at elevated altitudes. <br/> The fresh wind slabs will be deposited on the unfavourable surface of an old snowpack in particular on steep shady slopes at high altitudes and in high Alpine regions. As a consequence of mild temperatures and solar radiation the snowpack will consolidate. <br/> Sunshine and high temperatures will give rise as the day progresses to slight moistening of the snowpack. As a consequence of mild temperatures a crust formed on the surface during the last few days. Weakly bonded old snow is to be avoided. dangerRatingMap Simplified danger rating map of the region https://avalanche.report/albina_files/2021-12-18/2021-12-17_16-00-00/bb86971c-962f-4770-a593-92e80502443f.jpg website Link to region on the website https://avalanche.report/bulletin/2021-12-18?region=bb86971c-962f-4770-a593-92e80502443f 2021-12-17T16:00:00Z 2021-12-17T23:00:00Z 2021-12-18T23:00:00Z Avalanche.report https://avalanche.report Eastern Tuxer Alps 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 dp1 wind_drifted_snow NE E NW W N treeline moderate moderate 2 3 2 wet_snow E SW SE S W 2400 low low 1 1 decreasing 2021-12-18T23:00:00Z 2021-12-19T23:00:00Z Wind slabs are to be avoided. The wind slabs of the last few days are in some cases still prone to triggering. They are mostly rather small but can be released easily, in particular in areas where the snow cover is rather shallow. <br/> Caution is to be exercised on steep shady slopes above the tree line, as well as in all aspects at elevated altitudes. <br/> Avalanches can in very isolated cases be released in the weakly bonded old snow. Isolated whumpfing sounds indicate this situation. Steep slopes are to be traversed by snow sport participants one at a time. Careful route selection is recommended. <br/> On very steep sunny slopes more moist snow slides and avalanches are possible as the day progresses. <br/> The wind slabs of the weekend are in some cases still prone to triggering. They are poorly bonded with the old snowpack in particular on shady slopes. <br/> Faceted weak layers exist in the centre of the snowpack, in particular on shady slopes above the tree line, as well as on sunny slopes at intermediate and high altitudes. <br/> As a consequence of mild temperatures and solar radiation the snowpack consolidated. <br/> Sunshine and high temperatures will give rise as the day progresses to slight moistening of the snowpack. The weather conditions will foster a slow strengthening of the near-surface layers. The danger of dry avalanches will decrease gradually. On shady slopes the situation is less favourable. The danger of wet and gliding avalanches will increase a little during the day. dangerRatingMap Simplified danger rating map of the region https://avalanche.report/albina_files/2021-12-18/2021-12-17_16-00-00/570f3d79-c904-4cde-a79d-f095df5c2136.jpg website Link to region on the website https://avalanche.report/bulletin/2021-12-18?region=570f3d79-c904-4cde-a79d-f095df5c2136 2021-12-17T16:00:00.004025Z 2021-12-17T23:00:00Z 2021-12-18T23:00:00Z Avalanche.report https://avalanche.report Sexten Dolomites Latemar 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 Western Deferegger Alps Ulten Valley Eastern Nonsberger Alps Northern Dolomites of Fiemme Gröden Dolomites Primiero - Pale di S. Martino Eastern Deferegger Alps Prags Dolomites Prealps Schober Mountains Cembra Valley Lienzer Dolomites Vallarsa Western Nonsberg Alps Fassa Valley Sole, Pejo and Rabbi Ledro Valley Paganella Marzola - Valsugana moderate 2200 no_rating no_rating low 2200 no_rating no_rating dp7 dp6 persistent_weak_layers NE E NW W N 2200 moderate moderate 2 3 2 wind_drifted_snow NE E NW W N 2200 moderate moderate 2 3 2 steady 2021-12-18T23:00:00Z 2021-12-19T23:00:00Z Weakly bonded old snow is to be evaluated with care and prudence. Fresh wind slabs are to be avoided. Avalanches can in some places be released in the weakly bonded old snow by a single winter sport participant, in particular on steep shady slopes at high altitudes and in high Alpine regions, as well as on steep sunny slopes in high Alpine regions. Mostly avalanches are medium-sized. Whumpfing sounds and the formation of shooting cracks when stepping on the snowpack indicate this situation. The number and size of avalanche prone locations will increase with altitude. <br/> The fresh wind slabs are in some cases prone to triggering. Caution is to be exercised on steep shady slopes at high altitudes and in high Alpine regions. <br/> On very steep sunny slopes gliding avalanches and moist snow slides are possible as the day progresses. <br/> Careful route selection is recommended. Steep slopes are to be traversed by snow sport participants one at a time. Faceted weak layers exist in the centre of the snowpack, in particular on shady slopes above the tree line, as well as on sunny slopes at elevated altitudes. Field observations and snow profiles confirm this situation. <br/> The wind slabs are in some cases still prone to triggering. They are poorly bonded with the old snowpack in particular on shady slopes. As a consequence of mild temperatures and solar radiation the snowpack will consolidate. <br/> Sunshine and high temperatures will give rise as the day progresses to slight moistening of the snowpack. As a consequence of rising temperatures a crust formed on the surface during the last few days. Weakly bonded old snow requires caution. Fresh wind slabs require caution. dangerRatingMap Simplified danger rating map of the region https://avalanche.report/albina_files/2021-12-18/2021-12-17_16-00-00/aae4fe8b-9e6f-4f4a-8e7e-13b63f255ac7.jpg website Link to region on the website https://avalanche.report/bulletin/2021-12-18?region=aae4fe8b-9e6f-4f4a-8e7e-13b63f255ac7 2021-12-17T16:00:00Z 2021-12-17T23:00:00Z 2021-12-18T23:00:00Z Avalanche.report https://avalanche.report Western Verwall Mountains Eastern Verwall Mountains Allgäu Alps Silvretta Eastern Lechtal Alps - Ammergau Alps Samnaun Mountains Mieming Mountains Northern Oetz and Stubai Alps Karwendel Mountains Western Tuxer Alps Western Lechtal Alps Central Lechtal Alps Grieskogel Mountains moderate 2400 no_rating no_rating low 2400 no_rating no_rating dp1 dp6 persistent_weak_layers NE E NW W N 2400 moderate moderate 2 3 2 gliding_snow E SW SE S W 2400 low low 1 1 decreasing 2021-12-18T23:00:00Z 2021-12-19T23:00:00Z Weakly bonded old snow requires caution. Weak layers in the old snowpack can still be released by individual winter sport participants especially at transitions from a shallow to a deep snowpack. Caution is to be exercised in areas where the snow cover is rather shallow. Remotely triggered avalanches are possible in isolated cases. Mostly avalanches are medium-sized. Whumpfing sounds and the formation of shooting cracks when stepping on the snowpack indicate poor snowpack stability. <br/> The wind slabs of the last few days are to be evaluated with care and prudence in particular on steep shady slopes above approximately 2200 m. <br/> On very steep sunny slopes wet and gliding avalanches are possible as the day progresses, this also applies on steep shady slopes at intermediate altitudes. Faceted weak layers exist in the centre of the snowpack, in particular on shady slopes above approximately 2400 m, as well as on sunny slopes at high altitudes and in high Alpine regions. Field observations and snow profiles confirm this situation. <br/> The wind slabs are bonding only slowly with the old snowpack in particular on shady slopes. As a consequence of mild temperatures and solar radiation the snowpack will consolidate during the next few days. <br/> Sunshine and high temperatures will give rise as the day progresses to slight moistening of the snowpack. The weather conditions will foster a gradual strengthening of the near-surface layers. The danger of dry avalanches will decrease gradually. On shady slopes the situation is more dangerous. The danger of wet and gliding avalanches will increase a little during the day.