{ "bulletins": [ { "regions": [ { "regionID": "AT-06-16" }, { "regionID": "AT-06-15" }, { "regionID": "AT-06-11" }, { "regionID": "AT-06-10" }, { "regionID": "AT-06-03" }, { "regionID": "AT-06-09" }, { "regionID": "AT-06-06" }, { "regionID": "AT-06-08" }, { "regionID": "AT-06-05" }, { "regionID": "AT-06-07" }, { "regionID": "AT-06-17" } ], "validTime": { "startTime": "2022-01-05T23:00:00+00:00", "endTime": "2022-01-06T23:00:00+00:00" }, "source": {}, "dangerRatings": [ { "elevation": { "lowerBound": "Treeline" }, "customData": [], "mainValue": "moderate" }, { "elevation": { "upperBound": "Treeline" }, "customData": [], "mainValue": "low" } ], "avalancheProblems": [ { "dangerRating": { "elevation": {}, "customData": [], "aspect": [ "NE", "E", "SE", "S", "SW" ] }, "problemType": "wind_drifted_snow", "comment": "in gullies, bowls, behind protruberances" } ], "tendency": { "validTime": {}, "tendencyComment": "The dry cold preserves the snowpack, trigger-sensitive snowdrifts cannot settle, the main problem persists." }, "bulletinID": "RID1307RGR1", "publicationTime": "2022-01-05T17:00:00+00:00", "avalancheActivityHighlights": "Snowdrift problem at high altitude", "wxSynopsisComment": "In the Northern Alps and along the Niedere Tauern, clouds will accumulate, fog will move in, minor snowfall is possible on Epiphany. Starting at midday, skies will brighten somewhat, the highest peaks may become free. Much more pleasant conditions prevail on the southern flank of the Alps, the summits are free from the start and clouds will disperse and make room for the sun in the morning. An icy NW wind will be blowing briskly. At 2000 m: -10 degrees at midday; at 1500 m: -6 degrees. Winds will make it feel colder.\r\nOn Friday, mostly sunny and cold, good visibility. The SW winds wil be light-to-moderate.", "avalancheActivityComment": "Above the timberline, avalanche danger is MODERATE. New snow and frequently strong winds have generated fresh, trigger-sensitive snowdrift accumulations. Small-to-medium slab avalanches can be triggered even by the weight of one sole skier. Avalanche prone locations increase with ascending altitude, are found particularly in NE/E/SW facing gullies and bowls and behind protruberances, depending on wind impact also in forest clearances.", "snowpackStructureComment": "From the Seetal Alps over Niedere Tauern to Hochschwab region, up to 22 cm of fresh snow has been registered which fell amid strong wind impact. At higher altitudes the fresh snow and drifts were often deposited atop a smooth, melt-freeze encrusted old snowpack surface, initially with little wind influence. Bot the smooth surface and the soft snowpack layers constitute a weak layer for the bonded snowdrifts. From place to place also faceted weak layers are found beneath the melt-freeze crust and can be triggered. At lower altitudes, bonding of the fresh snow to the shallow snowpack is often better. In zones without wind the snowpack is loose." }, { "regions": [ { "regionID": "AT-06-14" }, { "regionID": "AT-06-13" }, { "regionID": "AT-06-12" } ], "validTime": { "startTime": "2022-01-05T23:00:00+00:00", "endTime": "2022-01-06T23:00:00+00:00" }, "source": {}, "dangerRatings": [ { "elevation": {}, "customData": [], "mainValue": "low" } ], "avalancheProblems": [ { "dangerRating": { "elevation": {}, "customData": [], "aspect": [ "NE", "E", "SE", "S", "SW" ] }, "problemType": "wind_drifted_snow", "comment": null } ], "tendency": { "validTime": {}, "tendencyComment": "No change in avalanche danger." }, "bulletinID": "RID1307RGR2", "publicationTime": "2022-01-05T17:00:00+00:00", "avalancheActivityHighlights": "Isolated danger zones from snowdrifts at high altitude", "wxSynopsisComment": "In the Northern Alps and along the Niedere Tauern, clouds will accumulate, fog will move in, minor snowfall is possible on Epiphany. Starting at midday, skies will brighten somewhat, the highest peaks may become free. Much more pleasant conditions prevail on the southern flank of the Alps, the summits are free from the start and clouds will disperse and make room for the sun in the morning. An icy NW wind will be blowing briskly. At 2000 m: -10 degrees at midday; at 1500 m: -6 degrees. Winds will make it feel colder.\r\nOn Friday, mostly sunny and cold, good visibility. The SW winds wil be light-to-moderate.", "avalancheActivityComment": "In the M\u00fcrztal Alps and eastern rimline ranges avalanche danger is low. On Wednesday a small amount of fresh snow was registered. Small drifts were generated: prone to triggering in gullies, bowls and behind protruberances. The snowpack surface is hard in exposed terrain.", "snowpackStructureComment": "Some fresh snow was deposited atop a wind-impacted old snowpack surface at high altitudes. In shady high-altitude terrain the fresh snow and drifts were deposited atop a hardened old snowpack. At low altitudes, bonding to the often shallow snowpack is better. Stormy winds are having their effect on the hard surface." }, { "regions": [ { "regionID": "AT-06-01" }, { "regionID": "AT-06-02" } ], "validTime": { "startTime": "2022-01-05T23:00:00+00:00", "endTime": "2022-01-06T23:00:00+00:00" }, "source": {}, "dangerRatings": [ { "elevation": { "lowerBound": "Treeline" }, "customData": [], "mainValue": "considerable" }, { "elevation": { "upperBound": "Treeline" }, "customData": [], "mainValue": "low" } ], "avalancheProblems": [ { "dangerRating": { "elevation": {}, "customData": [], "aspect": [ "NE", "E", "SE", "S", "SW" ] }, "problemType": "wind_drifted_snow", "comment": null } ], "tendency": { "validTime": {}, "tendencyComment": "The dry cold preserves the snowpack, trigger-sensitive snowdrifts cannot settle, the main problem persists." }, "bulletinID": "RID1307RGR3", "publicationTime": "2022-01-05T17:00:00+00:00", "avalancheActivityHighlights": "Snowdrift problem at high altitude", "wxSynopsisComment": "In the Northern Alps and along the Niedere Tauern, clouds will accumulate, fog will move in, minor snowfall is possible on Epiphany. Starting at midday, skies will brighten somewhat, the highest peaks may become free. Much more pleasant conditions prevail on the southern flank of the Alps, the summits are free from the start and clouds will disperse and make room for the sun in the morning. An icy NW wind will be blowing briskly. At 2000 m: -10 degrees at midday; at 1500 m: -6 degrees. Winds will make it feel colder.", "avalancheActivityComment": "Above the timberline, avalanche danger is considerable. New snow and frequently strong winds have generated fresh, trigger-sensitive snowdrift accumulations. Small-to-medium slab avalanches can be triggered even by the weight of one sole skier. Avalanche prone locations increase with ascending altitude, are found particularly in NE/E/SW facing gullies and bowls and behind protruberances, depending on wind impact also in forest clearances.", "snowpackStructureComment": "In the Dachstein region and Totes Gebirge, up to 25 cm of fresh snow has been registered which fell amid strong wind impact. At higher altitudes the fresh snow and drifts were often deposited atop a smooth, melt-freeze encrusted old snowpack surface, initially with little wind influence. Bot the smooth surface and the soft snowpack layers constitute a weak layer for the bonded snowdrifts. From place to place also faceted weak layers are found beneath the melt-freeze crust and can be triggered. At lower altitudes, bonding of the fresh snow to the shallow snowpack is often better. In zones without wind the snowpack is loose." }, { "regions": [ { "regionID": "AT-06-18" }, { "regionID": "AT-06-04-02" }, { "regionID": "AT-06-04-01" } ], "validTime": { "startTime": "2022-01-05T23:00:00+00:00", "endTime": "2022-01-06T23:00:00+00:00" }, "source": {}, "dangerRatings": [ { "elevation": { "lowerBound": "Treeline" }, "customData": [], "mainValue": "considerable" }, { "elevation": { "upperBound": "Treeline" }, "customData": [], "mainValue": "moderate" } ], "avalancheProblems": [ { "dangerRating": { "elevation": {}, "customData": [], "aspect": [ "NE", "E", "SE", "S", "SW" ] }, "problemType": "wind_drifted_snow", "comment": "in gullies, bowls, behind protruberances" } ], "tendency": { "validTime": {}, "tendencyComment": "The dry cold preserves the snowpack, trigger-sensitive snowdrifts cannot settle, the main problem persists." }, "bulletinID": "RID1307RGR4", "publicationTime": "2022-01-05T17:00:00+00:00", "avalancheActivityHighlights": "Snowdrift problem at high altitude", "wxSynopsisComment": "In the Northern Alps and along the Niedere Tauern, clouds will accumulate, fog will move in, minor snowfall is possible on Epiphany. Starting at midday, skies will brighten somewhat, the highest peaks may become free. Much more pleasant conditions prevail on the southern flank of the Alps, the summits are free from the start and clouds will disperse and make room for the sun in the morning. An icy NW wind will be blowing briskly. At 2000 m: -10 degrees at midday; at 1500 m: -6 degrees. Winds will make it feel colder.\r\nOn Friday, mostly sunny and cold, good visibility. The SW winds wil be light-to-moderate.", "avalancheActivityComment": "Above the timberline, avalanche danger is considerable. New snow and frequently strong winds have generated fresh, trigger-sensitive snowdrift accumulations. Small-to-medium slab avalanches can be triggered even by the weight of one sole skier. Avalanche prone locations increase with ascending altitude, are found particularly in NE/E/SW facing gullies and bowls and behind protruberances, depending on wind impact also in forest clearances.", "snowpackStructureComment": "In the Turrach region and Schladminger Tauern, up to 30 cm of fresh snow has been registered which fell amid strong wind impact. At higher altitudes the fresh snow and drifts were often deposited atop a smooth, melt-freeze encrusted old snowpack surface, initially with little wind influence. Bot the smooth surface and the soft snowpack layers constitute a weak layer for the bonded snowdrifts. From place to place also faceted weak layers are found beneath the melt-freeze crust and can be triggered. At lower altitudes, bonding of the fresh snow to the shallow snowpack is often better. In zones without wind the snowpack is loose." } ] }