{ "bulletins": [ { "regions": [ { "regionID": "AT-06-01" }, { "regionID": "AT-06-04" }, { "regionID": "AT-06-05" }, { "regionID": "AT-06-07" }, { "regionID": "AT-06-06" }, { "regionID": "AT-06-08" } ], "validTime": { "startTime": "2021-02-03T17:00:00+00:00", "endTime": "2021-02-04T17:00:00+00:00" }, "source": {}, "dangerRatings": [ { "elevation": { "lowerBound": "1800" }, "customData": [], "mainValue": "considerable" }, { "elevation": { "upperBound": "1800" }, "customData": [], "mainValue": "moderate" } ], "avalancheProblems": [ { "dangerRating": { "elevation": {}, "customData": [], "aspect": [ "N", "NE", "E", "W", "NW" ] }, "problemType": "persistent_weak_layers", "comment": null }, { "dangerRating": { "elevation": {}, "customData": [], "aspect": [ "SE", "S", "SW" ] }, "problemType": "wet_snow", "comment": null } ], "tendency": { "validTime": {}, "tendencyComment": "On Friday it will be sunny and mild. The likelihood of naturally triggered wet-snow avalanches will increase. On shady high altitude slopes, the old snow problem will remain upright." }, "bulletinID": "RID330RGR1", "publicationTime": "2021-02-03T17:00:00+00:00", "avalancheActivityHighlights": "Considerable avalanche danger at high altitudes", "wxSynopsisComment": "A weak cold front will bring a few rain showers to the Dachstein and Niedere Tauern regions until midnight. The snowfall level lies at 1500 m. The NW winds will intensify. During the daytime on Thursday, sunny weather will rapidly regain the upper hand. Clouds and fog in the northern barrier cloud regions will disperse during the morning. Winds will be blowing at strong velocity from the northwest. Temperature at 2000 m: 0 degrees.", "avalancheActivityComment": "Above 1800 m, considerable avalanche danger prevails, below that altitude danger is moderate. Older snowdrifts continue to be poorly bonded with the old snowpack, making it possible to trigger a slab avalanche even by minimum additional loading. Avalanche prone locations are found on W-N-E facing slopes. Whumpf noises are indicators of imminent danger. Naturally triggered wet-snow avalanches are possible on sunny slopes in particular.", "snowpackStructureComment": "As temperatures rose, the snowpack was able to continue settling. At higher altitudes, older snowdrift accumulations lie atop a thin layer of ice or atop a soft layer. Inside the old snowpack, instable, soft layers of faceted crystals have formed. On sunny slopes the snowpack is moist up to about 2000 m. At low and intermediate altitudes the snowpack is moist. Near ground level on shady slopes, depth hoar weakens the fundament." }, { "regions": [ { "regionID": "AT-06-02" }, { "regionID": "AT-06-03" }, { "regionID": "AT-06-09" }, { "regionID": "AT-06-10" }, { "regionID": "AT-06-11" }, { "regionID": "AT-06-15" }, { "regionID": "AT-06-16" }, { "regionID": "AT-06-17" }, { "regionID": "AT-06-18" } ], "validTime": { "startTime": "2021-02-03T17:00:00+00:00", "endTime": "2021-02-04T17:00:00+00:00" }, "source": {}, "dangerRatings": [ { "elevation": { "lowerBound": "1800" }, "customData": [], "mainValue": "moderate" }, { "elevation": { "upperBound": "1800" }, "customData": [], "mainValue": "low" } ], "avalancheProblems": [ { "dangerRating": { "elevation": {}, "customData": [], "aspect": [ "N", "NE", "E", "W", "NW" ] }, "problemType": "persistent_weak_layers", "comment": null }, { "dangerRating": { "elevation": {}, "customData": [], "aspect": [ "SE", "S", "SW" ] }, "problemType": "wet_snow", "comment": null } ], "tendency": { "validTime": {}, "tendencyComment": "No significant change in avalanche danger is anticipated. The frequency of glide-snow avalanches will rise somewhat." }, "bulletinID": "RID330RGR2", "publicationTime": "2021-02-03T17:00:00+00:00", "avalancheActivityHighlights": "Moderate avalanche danger at high altitudes due to old-snow problem", "wxSynopsisComment": "After a cold front passes through during the nocturnal hours, sunny weather will swiftly re-establish itself on Thursday. Clouds and fog in the northern cloud barrier regions will disperse in the morning. All the while, strong (in the eastern Kalpalps stormy) NW winds will be blowing. From Gurktal Alps as far as the Wechsel, it will be predominantly sunny. In the afternoon, winds will ease, then shift to W/SW. Temperatures will rise to 0 degrees at 2000 m.", "avalancheActivityComment": "Above the timberline, avalanche danger is moderate. Main problem: poorly bonded old snow. Avalanche prone locations are found on N/E facing slopes. Winds in ridgeline terrain have led to fresh snowdrift accumulations. On sunny slopes, naturally triggered wet-snow avalanches and glide-snow avalanches can be triggered.", "snowpackStructureComment": "At high altitudes, fresh and older snowdrift accumulations are poorly bonded with the soft, faceted layers of the old snowpack. In addition, on shady slopes the fundamente is weakened by other soft layers. On sunny slopes the snowpack has been moistened up to 2000 m. During Wednesday night, a thin melt-freeze crust will form At low altitudes the snow is moist or thoroughly wet." }, { "regions": [ { "regionID": "AT-06-13" }, { "regionID": "AT-06-14" }, { "regionID": "AT-06-12" } ], "validTime": { "startTime": "2021-02-03T17:00:00+00:00", "endTime": "2021-02-04T17:00:00+00:00" }, "source": {}, "dangerRatings": [ { "elevation": {}, "customData": [], "mainValue": "low" } ], "avalancheProblems": [ { "dangerRating": { "elevation": {}, "customData": [], "aspect": [ "SE", "S", "SW" ] }, "problemType": "wet_snow", "comment": null }, { "dangerRating": { "elevation": {}, "customData": [], "aspect": [ "N", "NE", "NW" ] }, "problemType": "persistent_weak_layers", "comment": null } ], "tendency": { "validTime": {}, "tendencyComment": "Slightly rising avalanche danger expected on Friday due to the rise in temperature." }, "bulletinID": "RID330RGR3", "publicationTime": "2021-02-03T17:00:00+00:00", "avalancheActivityHighlights": "Wet-snow problem", "wxSynopsisComment": "On Thursday it will be mostly sunny. In the M\u00fcrztal Alps region and the Semmering, strong NW winds will still be blowing in the morning. In the afternoon, winds will ease and shift to W/SW. Temperatures will rise again. At 1500 m: +4 degrees.", "avalancheActivityComment": "In the Graz mountains, in M\u00fcrztal Alpls and in Fischbach Alps, low avalanche danger prevails. Wet-snow is the main problem. On descente, small slides can be triggered. Also, naturally triggered wet slides are possible. In extremely steep north-facing gullies, slabs can still be triggered.", "snowpackStructureComment": "At low and intermediate altitudes the snow is moist or thoroughly wet. At low altitudes the snowpack melt continues. On shady slopes the expansive metamorphosis is weakening the snowpack layering." } ] }