On Friday, it will be cloudy in the west and south with sunny intervals in the north-east. On Friday afternoon, precipitation will set in on the Main Alpine Ridge and to the south of it, which will continue until Saturday morning. The snowfall level will be at low altitude. There will be hardly any precipitation in other regions. On Saturday, it will be mostly cloudy on the southern flank of the Alps and in southern Grisons. Some precipitation may fall. Otherwise it will be dry with sunny intervals.
The avalanche danger will increase slightly with the fresh snow on the Main Alpine Ridge and south of it, but will hardly change elsewhere. Weak layers in the old snowpack will remain prone to triggering, especially in the inneralpine regions.
"}], "validTime": {"endTime": "2026-01-22T16:00:00Z", "startTime": "2026-01-22T07:00:00Z"}, "bulletinID": "ddfa4431-a1d6-4788-ab82-110d79f117a2", "customData": {"CH": {"aggregation": [{"category": "dry", "problemTypes": ["persistent_weak_layers"], "validTimePeriod": "all_day"}]}}, "nextUpdate": "2026-01-22T16:00:00Z", "unscheduled": false, "dangerRatings": [{"mainValue": "moderate", "customData": {"CH": {"subdivision": "plus"}}, "validTimePeriod": "all_day"}], "weatherReview": {"comment": "Conditions were sunny in the mountains.
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At midday at 2000 m, between +2 \u00b0C in the north and -2 \u00b0C in the south
Mostly light southwesterly to westerly winds
"}, "publicationTime": "2026-01-22T07:00:00Z", "weatherForecast": {"comment": "Sunny at first. During the course of the day, clouds will move in from the west and become increasingly dense.
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At midday at 2000 m, between -1 \u00b0C in the north and -4 \u00b0C in the south
Mostly light southwesterly to westerly winds
"}, "avalancheProblems": [{"aspects": ["N", "NE", "E", "SE", "W", "NW"], "comment": "Avalanches can in some cases be released in the old snowpack and reach dangerously large size. These avalanche prone locations are difficult to recognise. Caution is to be exercised in particular on little-used, rather lightly snow-covered north and east facing slopes, as well as at transitions from a shallow to a deep snowpack. Isolated whumpfing sounds can indicate the danger. Backcountry touring and other off-piste activities call for experience in the assessment of avalanche danger.", "elevation": {"lowerBound": "2000"}, "customData": {"CH": {"subdivision": "plus", "coreZoneText": "Danger level \"moderate\" (2+) in west to northeast to southeast facing aspects above 2000m."}}, "problemType": "persistent_weak_layers", "validTimePeriod": "all_day", "dangerRatingValue": "moderate"}], "snowpackStructure": {"comment": "There are distinct weak layers in the middle and lower part of the snowpack, particularly on wind-protected shady slopes. These areas are particularly widespread south of a line from the Rh\u00f4ne to the Rhine and on the southern flank of the Alps. In these weak layers, medium-sized and sometimes even large avalanches can still be triggered by human activity. The snowpack on northern and eastern slopes in central Valais, as well as in northern Grisons, is particularly prone to triggering and remote triggering is also still possible in these areas in particular. On the northern flank of the Alps, isolated avalanches triggered in the old snowpack were last reported at the weekend.
"}}}