{"type": "Feature", "geometry": null, "properties": {"lang": "en", "regions": [{"name": "basso Moesano", "regionID": "CH-6212"}, {"name": "untere Leventina", "regionID": "CH-6115"}, {"name": "Riviera", "regionID": "CH-6122"}, {"name": "untere Maggiat\u00e4ler", "regionID": "CH-6121"}, {"name": "obere Maggiat\u00e4ler", "regionID": "CH-6114"}], "tendency": [{"comment": "<h1>Outlook to Friday</h1><p>It will be mostly cloudy with longer bright spells on Thursday on the Main Alpine Ridge in Upper Valais and in the Gotthard region. Snow will fall at times, with the largest amounts in the far west, on the northern flank of the Alps and in the Bernina region, totalling around 20 to 30 cm. The snowfall level will be around 1300 m in the north and 1600 m in the south. On Thursday, there will be moderate and locally strong westerly winds in the north and at high altitudes. Winds will be light on Friday.</p><p>The danger of dry avalanches will increase in the far west, on the northern flank of the Alps and in the Bernina region, but will not change significantly in other regions. With the cool and often cloudy weather, only isolated wet avalanches are to be expected.</p>"}], "validTime": {"endTime": "2026-05-13T15:00:00Z", "startTime": "2026-05-12T15:00:00Z"}, "bulletinID": "d568cd6f-3d7c-4745-b6b2-78891ef6a4e5", "customData": {"CH": {"aggregation": [{"category": "dry", "problemTypes": ["wind_slab"], "validTimePeriod": "all_day"}]}}, "nextUpdate": "2026-05-13T15:00:00Z", "unscheduled": false, "dangerRatings": [{"mainValue": "moderate", "customData": {"CH": {"subdivision": "neutral"}}, "validTimePeriod": "all_day"}], "weatherReview": {"comment": "<h1>Weather review for Tuesday</h1><p>There was precipitation during the night, at times heavy in the north. In the morning there was still some precipitation in the northeast. Elsewhere, it was cloudy during the day with increasingly long bright spells. It was sunny in the south.</p><h2>Fresh snow</h2><p>From Monday afternoon until precipitation stopped on Tuesday, the following amounts fell above approximately 2200 m:</p><ul><li>North of a line from the Rh\u00f4ne to the Rhine and in the extreme west of Lower Valais: 20 to 40 cm</li><li>Elsewhere: a widespread 10 to 20 cm, less in the south.</li></ul><p>This means that, above approximately 2800 m, total snowfall since Sunday has been:</p><ul><li>Northern flank of the Alps west of T\u00f6di, extreme west of Lower Valais, northern Valais and from Avers to the Bernina region: 40 to 50 cm</li><li>Elsewhere: a widespread 20 to 40 cm, less in Ticino.</li></ul><h2 contenteditable=\"false\">Temperature</h2><p>At midday at 2000 m, between -5 \u00b0C in the north and 0 \u00b0C in the south</p><h2>Wind</h2><ul><li>Moderate and locally strong from the west</li><li>On the Main Alpine Ridge and south of it, often strong from the northwest during the day</li></ul>"}, "publicationTime": "2026-05-12T15:00:00Z", "weatherForecast": {"comment": "<h1>Weather forecast to Wednesday</h1><p>During the night it will be mostly cloudy in the southwest and quite clear in the northeast. It will be quite sunny everywhere during the day.</p><h2 contenteditable=\"false\">Fresh snow</h2><p>-</p><h2>Temperature</h2><p>At midday at 2000 m, between +1 \u00b0C in the north and +4 \u00b0C in the south</p><h2>Wind</h2><ul><li>Mainly light at first</li><li>In the afternoon, moderate in the north and generally at high altitudes, also locally strong winds, from westerly directions</li></ul>"}, "avalancheProblems": [{"aspects": ["N", "NE", "E", "SE", "NW"], "comment": "As a consequence of a sometimes storm force northwesterly wind, wind slabs formed on Tuesday in particular in gullies and bowls and behind abrupt changes in the terrain. These are rather small but in some cases prone to triggering. They are to be evaluated with care and prudence in steep terrain. Apart from the danger of being buried, restraint should be exercised as well in view of the danger of avalanches sweeping people along and giving rise to falls. <br/> The Avalanche Warning Service currently has only a small amount of information that has been collected in the field, so that the avalanche danger should be investigated especially thoroughly in the relevant locality.", "elevation": {"lowerBound": "2800"}, "customData": {"CH": {"subdivision": "neutral", "coreZoneText": "Danger level \"moderate\" (2=) in northwest to northeast to southeast facing aspects above 2800m."}}, "problemType": "wind_slab", "validTimePeriod": "all_day", "dangerRatingValue": "moderate"}], "snowpackStructure": {"comment": "<h1>Snowpack</h1><p>At high altitudes, the fresh and drifted snow from the last few days is lying on an old snowpack that contains coarse-grained weak layers in its upper part, especially on north- and east-facing slopes.</p><p>As a result of solar radiation, moist snow slides from the new snow are to be expected. In many regions this is likely to occur on Tuesday afternoon, while in the northeast some may not happen until Wednesday.</p>"}}}