{"type": "Feature", "geometry": null, "properties": {"lang": "en", "regions": [{"name": "basso Moesano", "regionID": "CH-6212"}, {"name": "obere Leventina", "regionID": "CH-6112"}, {"name": "untere Leventina", "regionID": "CH-6115"}, {"name": "Luganese", "regionID": "CH-6131"}, {"name": "Riviera", "regionID": "CH-6122"}, {"name": "Bleniotal", "regionID": "CH-6113"}, {"name": "alto Moesano", "regionID": "CH-6211"}, {"name": "Bedrettotal", "regionID": "CH-6111"}, {"name": "untere Maggiat\u00e4ler", "regionID": "CH-6121"}, {"name": "obere Maggiat\u00e4ler", "regionID": "CH-6114"}], "tendency": [{"comment": "<h1>Outlook</h1><h2>Thursday</h2><p>Thursday will be very sunny. Winds will be light to moderate, strengthening from the south in the evening.</p><p>Avalanche risk will decrease somewhat in all regions. In southern Valais, Ticino and Grisons, however, it will decrease only very slowly due to the distinct and persistent weak layers.</p><h2>Friday</h2><p>Precipitation will set in from the west overnight to Friday. During the day, conditions will be very cloudy and there will be occasional precipitation, falling as snow above approximately 1200 m. Around 20 to 30 cm will fall in the extreme west of Lower Valais. The wind will increasingly become a moderate southwesterly.</p><p>Avalanche risk will increase in the west with the fresh snow, but will otherwise not change significantly.</p>"}], "validTime": {"endTime": "2026-02-04T16:00:00Z", "startTime": "2026-02-04T07:00:00Z"}, "bulletinID": "c065aa3a-ef76-4c34-aead-4c8ec1f72b37", "customData": {"CH": {"aggregation": [{"category": "dry", "problemTypes": ["new_snow", "persistent_weak_layers"], "validTimePeriod": "all_day"}]}}, "nextUpdate": "2026-02-04T16:00:00Z", "unscheduled": false, "dangerRatings": [{"mainValue": "considerable", "customData": {"CH": {"subdivision": "neutral"}}, "validTimePeriod": "all_day"}], "weatherReview": {"comment": "<h1>Weather review for Tuesday</h1><p>Snow fell down to low altitudes on the Main Alpine Ridge and south of there. There were sunny intervals in the west and north.</p><h2>Fresh snow</h2><p>From Monday evening to Tuesday afternoon:</p><ul><li>from Val Bregaglia to the Bernina Pass: 15 to 25 cm</li><li>central part of the southern flank of the Alps: 10 to 20 cm</li><li>rest of the Main Alpine Ridge: 5 to 10 cm; elsewhere: less or dry.</li></ul><h2>Temperature</h2><p>At midday at 2000 m, between -2\u00b0C in the north and -5\u00b0C in the south</p><h2>Wind</h2><ul><li>Strong to storm-force southerly; strong foehn wind in the Alpine valleys of the north</li><li>Dropping somewhat in the afternoon</li></ul>"}, "publicationTime": "2026-02-04T07:00:00Z", "weatherForecast": {"comment": "<h1>Weather forecast to Wednesday</h1><p>Conditions will often be cloudy on Wednesday and a little snow will fall in the south. The snowfall level will be around 1000 m. There will be brighter intervals in the afternoon in the west.</p><h2 contenteditable=\"false\">Fresh snow</h2><p>Main Alpine Ridge and south of there: a few centimetres;</p><h2 contenteditable=\"false\">Temperature</h2><p>At midday at 2000 m, between -1\u00b0C in the north and -5\u00b0C in the south</p><h2>Wind</h2><p>Light in the south, otherwise moderate from southerly directions</p>"}, "avalancheProblems": [{"aspects": ["N", "NE", "E", "SE", "SW", "W", "NW"], "comment": "The new snow and wind slabs are lying on top of a weakly bonded old snowpack. Even single snow sport participants can release avalanches. These can be triggered in deep layers and reach large size in isolated cases. Remotely triggered avalanches are possible. Whumpfing sounds and the formation of shooting cracks when stepping on the snowpack and fresh avalanches can indicate the danger. <br/> Backcountry touring and other off-piste activities call for experience in the assessment of avalanche danger and caution.", "elevation": {"lowerBound": "2000"}, "customData": {"CH": {"subdivision": "neutral", "coreZoneText": "Danger level \"considerable\" (3=) in southwest to north to southeast facing aspects above 2000m."}}, "problemType": "new_snow", "validTimePeriod": "all_day", "dangerRatingValue": "considerable"}, {"aspects": ["N", "NE", "E", "SE", "SW", "W", "NW"], "comment": "The new snow and wind slabs are lying on top of a weakly bonded old snowpack. Even single snow sport participants can release avalanches. These can be triggered in deep layers and reach large size in isolated cases. Remotely triggered avalanches are possible. Whumpfing sounds and the formation of shooting cracks when stepping on the snowpack and fresh avalanches can indicate the danger. <br/> Backcountry touring and other off-piste activities call for experience in the assessment of avalanche danger and caution.", "elevation": {"lowerBound": "2000"}, "customData": {"CH": {"subdivision": "neutral", "coreZoneText": "Danger level \"considerable\" (3=) in southwest to north to southeast facing aspects above 2000m."}}, "problemType": "persistent_weak_layers", "validTimePeriod": "all_day", "dangerRatingValue": "considerable"}], "snowpackStructure": {"comment": "<h1>Snowpack</h1><p>Tuesday\u2019s strong to storm-force southerly winds have formed widespread snowdrift accumulations. Ridgelines have often been blown away. In the south, the fresh snow was additionally deposited on top of a weak snowpack. Fresh snow and snowdrift accumulations are often lying on an unfavourable old snow surface of faceted crystals or snow-covered surface hoar and are easily triggered in many places.</p><p>There are pronounced weak layers in the snowpack in southern Valais, Ticino and Grisons. At the weekend, human activity triggered lots of medium and sometimes large avalanches in the weak old snowpack in these regions, often from a distance. Snowpack structure is somewhat more favourable on the northern flank of the Alps and in northern Valais, but there are weak layers deeper in the snowpack in these regions too. These may still be triggered, especially where there is little snow and at transitions from a deep to shallow snowpack.</p>"}}}