{"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>Clear nights will be followed by sunny days. With a zero-degree level at almost 3000 m, it continues to be mild. The westerly wind will be light, becoming moderate at times on Friday.</p><p>The danger of dry avalanches will decrease, but only very slowly in southern Valais, Ticino and Grisons due to the pronounced weak layers. Gliding avalanches are still to be expected, as well as wet avalanches on sunny slopes. These may become large in the west and north.</p>"}], "validTime": {"endTime": "2026-02-25T16:00:00Z", "startTime": "2026-02-25T07:00:00Z"}, "bulletinID": "f6073bde-0445-43e8-b984-c903858854a8", "customData": {"CH": {"aggregation": [{"title": "Dry avalanches", "category": "dry", "problemTypes": ["persistent_weak_layers"], "validTimePeriod": "all_day"}, {"title": "Wet-snow and gliding avalanches", "category": "wet", "problemTypes": ["wet_snow", "gliding_snow"], "validTimePeriod": "all_day"}]}}, "nextUpdate": "2026-02-25T16:00:00Z", "unscheduled": false, "dangerRatings": [{"mainValue": "considerable", "customData": {"CH": {"subdivision": "minus"}}, "validTimePeriod": "all_day"}], "weatherReview": {"comment": "<h1>Weather review for Tuesday</h1><p>It was quite sunny in the far west, in Valais and in the south. In the other regions, it was very cloudy and there was some precipitation, mainly in the north-east. The snowfall level rose to around 2000 m.</p><h2>Fresh snow</h2><p>From Monday afternoon to Tuesday afternoon, the following amounts of fresh snow fell above approximately 2300 m:</p><ul><li>Eastern part of the northern flank of the Alps, northern Grisons, Lower Engadine: 10 to 15 cm</li><li>Less elsewhere, dry in the south</li></ul><h2>Temperature</h2><p>At midday at 2000 m, between a mild +6 \u00b0C in the southwest and +2 \u00b0C in the northeast</p><h2>Wind</h2><p>There was a northwesterly wind:</p><ul><li>Light to moderate in the west and south</li><li>Strong and locally stormy at high altitudes in the east and in Grisons</li></ul>"}, "publicationTime": "2026-02-25T07:00:00Z", "weatherForecast": {"comment": "<h1>Weather forecast to Wednesday</h1><p>After a clear night, it will be sunny in the mountains and very mild with a zero-degree level at 3200 m.</p><h2 contenteditable=\"false\">Fresh snow</h2><p>-</p><h2 contenteditable=\"false\">Temperature</h2><p>At midday at 2000 m, between +7 \u00b0C in the north and +5 \u00b0C in the south</p><h2>Wind</h2><p>Light</p>"}, "avalancheProblems": [{"aspects": ["N", "NE", "E", "SE", "S", "SW", "W", "NW"], "comment": "Distinct weak layers exist in the snowpack. Single winter sport participants can release avalanches in some places. These can be triggered in deep layers and reach large size. Whumpfing sounds can indicate the danger. <br/> The weather will be very warm. As a consequence of warming during the day and the solar radiation, the likelihood of dry avalanches being released will increase a little. <br/> Backcountry touring and other off-piste activities call for experience in the assessment of avalanche danger.", "elevation": {"lowerBound": "2200"}, "customData": {"CH": {"subdivision": "minus", "coreZoneText": "Danger level \"considerable\" (3-) in all aspects above 2200m."}}, "problemType": "persistent_weak_layers", "validTimePeriod": "all_day", "dangerRatingValue": "considerable"}, {"aspects": ["E", "SE", "S", "SW", "W"], "comment": "The weather will be very mild. On steep grassy slopes gliding avalanches are to be expected. Areas with glide cracks are to be avoided. In addition as the day progresses in particular on east, south and west facing slopes, wet avalanches are possible. Avalanches can in isolated cases reach large size.", "elevation": {"upperBound": "2200"}, "customData": {"CH": {"coreZoneText": "Danger level \"moderate\" (2) in east to south to west facing aspects below 2200m."}}, "problemType": "wet_snow", "validTimePeriod": "all_day", "dangerRatingValue": "moderate"}, {"aspects": ["E", "SE", "S", "SW", "W"], "comment": "The weather will be very mild. On steep grassy slopes gliding avalanches are to be expected. Areas with glide cracks are to be avoided. In addition as the day progresses in particular on east, south and west facing slopes, wet avalanches are possible. Avalanches can in isolated cases reach large size.", "elevation": {"upperBound": "2200"}, "customData": {"CH": {"coreZoneText": "Danger level \"moderate\" (2) in east to south to west facing aspects below 2200m."}}, "problemType": "gliding_snow", "validTimePeriod": "all_day", "dangerRatingValue": "moderate"}], "snowpackStructure": {"comment": "<h1>Snowpack</h1><p>North of a line from the Rh\u00f4ne to the Rhine and in the extreme west of Lower Valais, 2 to 3.5 m of snow have fallen over the last two weeks. As a result, weak layers in the old snowpack are thickly covered and can only rarely be triggered by human activity. However, avalanches may become very large.</p><p>South of the line from the Rh\u00f4ne to the Rhine, the persistent weak layers are still pronounced. Although there is not quite as much snow here, avalanches can still become large or even very large. In Grisons, avalanche-prone locations are still common. Whumpfing sounds and remote triggering are typical. In southern Valais, the significant weak layers in the lower part of the snowpack are mostly rather more thickly covered. Avalanche-prone locations where avalanches can be triggered in the weak old snowpack are therefore less frequent and mainly located in areas with little snow.</p><p>With the rise in temperature, the likelihood of dry avalanches being triggered increases slightly during the day. In addition, gliding avalanches are to be expected on steep grassy slopes and wet avalanches on sunny slopes.</p>"}}}