{ "bulletins": [ { "regions": [ { "regionID": "AT-06-01" }, { "regionID": "AT-06-02" }, { "regionID": "AT-06-03" }, { "regionID": "AT-06-10" }, { "regionID": "AT-06-11" } ], "validTime": { "startTime": "2022-01-30T23:00:00+00:00", "endTime": "2022-01-31T23:00:00+00:00" }, "source": {}, "dangerRatings": [ { "elevation": { "lowerBound": "Treeline" }, "customData": [], "mainValue": "considerable" }, { "elevation": { "upperBound": "Treeline" }, "customData": [], "mainValue": "moderate" } ], "avalancheProblems": [ { "dangerRating": { "elevation": {}, "customData": [], "aspect": [ "N", "NE", "E", "SE", "S", "SW", "W", "NW" ] }, "problemType": "wind_drifted_snow", "comment": null } ], "tendency": { "validTime": {}, "tendencyComment": "On Monday night, a high-trough will reach the Eastern Alps. In its wake, a stormy NW air current will bring very moist air masses to the land, with abundant fresh snow in the northern barrier cloud regions. The avalanche danger levels will increase significantly." }, "bulletinID": "RID1531RGR1", "publicationTime": "2022-01-30T17:00:00+00:00", "avalancheActivityHighlights": "As snowfall sets in, stormy winds will generate new snowdrift accumulations", "wxSynopsisComment": "Driven by the storm-low named \u201cNadia\u201d over the Baltic Sea, a westerly to northwesterly air current continues to determine the weather. On Monday a cold front will traverse Styria. After a brief quiet spell when snowfall will pause and winds ease, cloud cover will quickly move into the Tauern and the Northern Alps and it will begin to snow during the morning. The W/NW winds will intensify. Fresh snow: about 20 cm, up to 30 cm in Totes Gebirge. The southern flank of the Alps will have better conditions, but medium-high clouds will also move in, bringing brief snow showers. Temperatures at midday: at 2000 m: -8 degrees; at 1500 m: -5 degrees. Milder on the southern flank of the Alps: -5 and -1 degree.", "avalancheActivityComment": "The size of danger zones increases with ascending altitude. Above the treeline avalanche danger is CONSIDERABLE. Particularly the protected zones of the terrain with little wind influence will have drifts deposited anew: gullies, bowls, behind protruberances.", "snowpackStructureComment": "Gale-strength winds have blown crests, ridges and plateaus bare of snow in all aspects. The deposited not-too-cold fresh snowdrifts are generally hard. With ascending altitude this snow becomes colder and graupel is found at intermediate layers. At low altitudes the snow is moist. The newly generated snowdrift accumulations are, initally at least, well bonded with the snowpack below them." }, { "regions": [ { "regionID": "AT-06-04-01" }, { "regionID": "AT-06-05" }, { "regionID": "AT-06-06" }, { "regionID": "AT-06-09" }, { "regionID": "AT-06-04-02" }, { "regionID": "AT-06-07" }, { "regionID": "AT-06-08" } ], "validTime": { "startTime": "2022-01-30T23:00:00+00:00", "endTime": "2022-01-31T23:00:00+00:00" }, "source": {}, "dangerRatings": [ { "elevation": { "lowerBound": "Treeline" }, "customData": [], "mainValue": "moderate" }, { "elevation": { "upperBound": "Treeline" }, "customData": [], "mainValue": "low" } ], "avalancheProblems": [ { "dangerRating": { "elevation": {}, "customData": [], "aspect": [ "N", "NE", "E", "SE", "S" ] }, "problemType": "wind_drifted_snow", "comment": "compact-to-hard snowdrift masses, large additional loading, utterly windblown terrain" } ], "tendency": { "validTime": {}, "tendencyComment": "On Monday night, a high-trough will reach the Eastern Alps. In its wake, a stormy NW air current will bring very moist air masses to the land, with abundant fresh snow in the northern barrier cloud regions. The avalanche danger levels will increase significantly." }, "bulletinID": "RID1531RGR2", "publicationTime": "2022-01-30T17:00:00+00:00", "avalancheActivityHighlights": "Moderate snowdrift problem during the day, quickly intensifying in the evening", "wxSynopsisComment": "Driven by the storm-low named \u201cNadia\u201d over the Baltic Sea, a westerly to northwesterly air current continues to determine the weather. On Monday a cold front will traverse Styria. After a brief quiet spell when snowfall will pause and winds ease, cloud cover will quickly move into the Tauern and the Northern Alps and it will begin to snow during the morning. The W/NW winds will intensify. Fresh snow: about 20 cm, up to 30 cm in Totes Gebirge. The southern flank of the Alps will have better conditions, but medium-high clouds will also move in, bringing brief snow showers. Temperatures at midday: at 2000 m: -8 degrees; at 1500 m: -5 degrees. Milder on the southern flank of the Alps: -5 and -1 degree.", "avalancheActivityComment": "The snowdrift danger is MODERATE above the treeline, LOW below that altitude.\r\nDanger zones where large additional loading can trigger a compact-to-hard snowdrift mass are found particularly in gullies, bowls and behind protruberances. The higher you go, the easier to trigger a slab. Potential avalanches are small to medium-sized.", "snowpackStructureComment": "The combination of gale-strength winds and relatively mild temperatures on Sunday has left its marks behind. The terrain is utterly windblown, the old snow has been laid free. The transported snow lies deposited atop hardened snowpack surfaces in wind-protected zones. Soft layers beneath the drifts and more deeply embedded weak layers (around the crusts) are not triggerable on Monday, i.e. require greater additional loading." }, { "regions": [ { "regionID": "AT-06-18" }, { "regionID": "AT-06-17" }, { "regionID": "AT-06-15" }, { "regionID": "AT-06-16" }, { "regionID": "AT-06-12" }, { "regionID": "AT-06-14" }, { "regionID": "AT-06-13" } ], "validTime": { "startTime": "2022-01-30T23:00:00+00:00", "endTime": "2022-01-31T23:00:00+00:00" }, "source": {}, "dangerRatings": [ { "elevation": {}, "customData": [], "mainValue": "low" } ], "avalancheProblems": [ { "dangerRating": { "elevation": {}, "customData": [], "aspect": [ "N", "NE", "E", "SE" ] }, "problemType": "wind_drifted_snow", "comment": null } ], "tendency": { "validTime": {}, "tendencyComment": "On Monday night, a high-trough will reach the Eastern Alps. In its wake, a stormy NW air current will bring very moist air masses to the land, with abundant fresh snow in the northern barrier cloud regions. The avalanche danger levels will increase significantly." }, "bulletinID": "RID1531RGR3", "publicationTime": "2022-01-30T17:00:00+00:00", "avalancheActivityHighlights": "Low avalanche danger, caution urged towards small snowdrift patches esp.behind protruberances and in bowls", "wxSynopsisComment": "Driven by the storm-low named \u201cNadia\u201d over the Baltic Sea, a westerly to northwesterly air current continues to determine the weather. On Monday a cold front will traverse Styria. After a brief quiet spell when snowfall will pause and winds ease, cloud cover will quickly move into the Tauern and the Northern Alps and it will begin to snow during the morning. The W/NW winds will intensify. Fresh snow: about 20 cm, up to 30 cm in Totes Gebirge. The southern flank of the Alps will have better conditions, but medium-high clouds will also move in, bringing brief snow showers. Temperatures at midday: at 2000 m: -8 degrees; at 1500 m: -5 degrees. Milder on the southern flank of the Alps: -5 and -1 degree.", "avalancheActivityComment": "Due to strong winds, the snowdrift patches are relatively small. Mostly the transported snow was deposited in wind-protected zones, in bowls or behind protruberances (small snowdrift patches, mostly triggerable by large additional loading).", "snowpackStructureComment": "The combination of gale-strength winds and relatively mild temperatures on Sunday has left its marks behind. The terrain is utterly windblown, the old snow has been laid free. At low altitudes the snow is soft." } ] }