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.
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.
"}], "validTime": {"endTime": "2026-02-25T16:00:00Z", "startTime": "2026-02-25T07:00:00Z"}, "bulletinID": "96247d31-1113-4970-a41c-cb3483b09fef", "customData": {"CH": {"aggregation": [{"title": "Dry avalanches", "category": "dry", "problemTypes": ["new_snow", "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": "plus"}}, "validTimePeriod": "all_day"}], "weatherReview": {"comment": "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.
From Monday afternoon to Tuesday afternoon, the following amounts of fresh snow fell above approximately 2300 m:
At midday at 2000 m, between a mild +6 \u00b0C in the southwest and +2 \u00b0C in the northeast
There was a northwesterly wind:
After a clear night, it will be sunny in the mountains and very mild with a zero-degree level at 3200 m.
-
At midday at 2000 m, between +7 \u00b0C in the north and +5 \u00b0C in the south
Light
"}, "avalancheProblems": [{"aspects": ["N", "NE", "E", "SE", "S", "SW", "W", "NW"], "comment": "The new snow and wind slabs are lying on top of a weakly bonded old snowpack. Avalanches can in many places be released easily. They can be triggered in near-ground layers and reach large size. Whumpfing sounds serve as an alarm indicating the danger. Remotely triggered avalanches are possible.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.
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.
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.
"}}}