Moisture penetration into the snowpack is well advanced. The most precarious areas are slopes where weak layers in the old snowpack are becoming wet for the first time. At present, this mainly affects north-facing slopes between approximately 2200 and 2500 m, and east- and west-facing slopes between approximately 2500 and 2800 m. In many places, south-facing slopes are snow-free up to around 3000 m; where there is still snow, moisture penetration extends as far as the high alpine regions.
In Grisons, wet slab avalanches can occasionally be triggered by human activity in the weak old snowpack. At altitudes where the snowpack is still dry, weak layers in the old snowpack are still present, but are unlikely to be triggered anymore.
With the rain, the danger of wet avalanches is elevated even in the late morning.
" }, "source": { "provider": { "name": "SLF", "website": "https://whiterisk.ch/en/conditions" } }, "tendency": [ { "comment": "In the north, the nights into Thursday and Friday will be mostly clear and it will be quite sunny during both days. In the south, the nights will often be overcast. It will be only partly sunny during the day on Thursday, and quite sunny on Friday. Winds will mainly be light. The zero-degree level will be around 3000 m. The danger of dry avalanches will decrease rapidly again in the high alpine regions. With sunshine and warming temperatures during the day, the danger of wet avalanches will increase as each day progresses, increasing faster in the south after an overcast night.
" } ], "unscheduled": false, "validTime": { "startTime": "2026-04-28T15:00:00+00:00", "endTime": "2026-04-29T15:00:00+00:00" }, "weatherForecast": { "comment": "The night will be overcast with bright spells. There will be some widespread precipitation until the late morning. During the day it will be cloudy with showers and bright spells in the afternoon, mainly in the west. The snowfall level will be between 2200 and 2600 m.
In the high alpine regions, a widespread 5 bis 15 cm
At midday at 2000 m, between +7 \u00b0C in the west and +4 \u00b0C in the east
Mostly light; moderate westerly wind for a time during the night in the high alpine regions, moderate Bise wind in the Prealps during the day
" }, "weatherReview": { "comment": "The night was partly clear in the north and overcast in the south. There were showers during the night and in the late morning, mainly in the south, and increasingly in all regions in the afternoon. The snowfall level was between 2200 and 2600 m.
From Monday evening to Tuesday afternoon in the high alpine regions:
At midday at 2000 m, around +6 \u00b0C
Light to moderate southwesterly
" } }, { "avalancheProblems": [ { "customData": { "CH": { "subdivision": "minus", "coreZoneText": "Danger level \"moderate\" (2-) in northwest to northeast to east facing aspects above 2800m." } }, "problemType": "wind_slab", "aspects": [ "N", "NE", "E", "NW" ], "comment": "As a consequence of new snow and a sometimes moderate southwesterly wind, mostly small wind slabs will form in some localities. These are in some cases prone to triggering. 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.Moisture penetration into the snowpack is well advanced. The most precarious areas are slopes where weak layers in the old snowpack are becoming wet for the first time. At present, this mainly affects north-facing slopes between approximately 2200 and 2500 m, and east- and west-facing slopes between approximately 2500 and 2800 m. In many places, south-facing slopes are snow-free up to around 3000 m; where there is still snow, moisture penetration extends as far as the high alpine regions.
In Grisons, wet slab avalanches can occasionally be triggered by human activity in the weak old snowpack. At altitudes where the snowpack is still dry, weak layers in the old snowpack are still present, but are unlikely to be triggered anymore.
With the rain, the danger of wet avalanches is elevated even in the late morning.
" }, "source": { "provider": { "name": "SLF", "website": "https://whiterisk.ch/en/conditions" } }, "tendency": [ { "comment": "In the north, the nights into Thursday and Friday will be mostly clear and it will be quite sunny during both days. In the south, the nights will often be overcast. It will be only partly sunny during the day on Thursday, and quite sunny on Friday. Winds will mainly be light. The zero-degree level will be around 3000 m. The danger of dry avalanches will decrease rapidly again in the high alpine regions. With sunshine and warming temperatures during the day, the danger of wet avalanches will increase as each day progresses, increasing faster in the south after an overcast night.
" } ], "unscheduled": false, "validTime": { "startTime": "2026-04-28T15:00:00+00:00", "endTime": "2026-04-29T15:00:00+00:00" }, "weatherForecast": { "comment": "The night will be overcast with bright spells. There will be some widespread precipitation until the late morning. During the day it will be cloudy with showers and bright spells in the afternoon, mainly in the west. The snowfall level will be between 2200 and 2600 m.
In the high alpine regions, a widespread 5 bis 15 cm
At midday at 2000 m, between +7 \u00b0C in the west and +4 \u00b0C in the east
Mostly light; moderate westerly wind for a time during the night in the high alpine regions, moderate Bise wind in the Prealps during the day
" }, "weatherReview": { "comment": "The night was partly clear in the north and overcast in the south. There were showers during the night and in the late morning, mainly in the south, and increasingly in all regions in the afternoon. The snowfall level was between 2200 and 2600 m.
From Monday evening to Tuesday afternoon in the high alpine regions:
At midday at 2000 m, around +6 \u00b0C
Light to moderate southwesterly
" } }, { "avalancheProblems": [ { "customData": { "CH": { "subdivision": null } }, "problemType": "wet_snow", "comment": "As a consequence of the rain wet avalanches are possible at any time, in particular medium-sized ones. This applies in particular on very steep north facing slopes below approximately 2500 m, as well as on very steep east and west facing slopes between approximately 2500 and 3000 m. As the day progresses as a consequence of warming during the day and solar radiation there will be only a slight increase in the danger.Moisture penetration into the snowpack is well advanced. The most precarious areas are slopes where weak layers in the old snowpack are becoming wet for the first time. At present, this mainly affects north-facing slopes between approximately 2200 and 2500 m, and east- and west-facing slopes between approximately 2500 and 2800 m. In many places, south-facing slopes are snow-free up to around 3000 m; where there is still snow, moisture penetration extends as far as the high alpine regions.
In Grisons, wet slab avalanches can occasionally be triggered by human activity in the weak old snowpack. At altitudes where the snowpack is still dry, weak layers in the old snowpack are still present, but are unlikely to be triggered anymore.
With the rain, the danger of wet avalanches is elevated even in the late morning.
" }, "source": { "provider": { "name": "SLF", "website": "https://whiterisk.ch/en/conditions" } }, "tendency": [ { "comment": "In the north, the nights into Thursday and Friday will be mostly clear and it will be quite sunny during both days. In the south, the nights will often be overcast. It will be only partly sunny during the day on Thursday, and quite sunny on Friday. Winds will mainly be light. The zero-degree level will be around 3000 m. The danger of dry avalanches will decrease rapidly again in the high alpine regions. With sunshine and warming temperatures during the day, the danger of wet avalanches will increase as each day progresses, increasing faster in the south after an overcast night.
" } ], "unscheduled": false, "validTime": { "startTime": "2026-04-28T15:00:00+00:00", "endTime": "2026-04-29T15:00:00+00:00" }, "weatherForecast": { "comment": "The night will be overcast with bright spells. There will be some widespread precipitation until the late morning. During the day it will be cloudy with showers and bright spells in the afternoon, mainly in the west. The snowfall level will be between 2200 and 2600 m.
In the high alpine regions, a widespread 5 bis 15 cm
At midday at 2000 m, between +7 \u00b0C in the west and +4 \u00b0C in the east
Mostly light; moderate westerly wind for a time during the night in the high alpine regions, moderate Bise wind in the Prealps during the day
" }, "weatherReview": { "comment": "The night was partly clear in the north and overcast in the south. There were showers during the night and in the late morning, mainly in the south, and increasingly in all regions in the afternoon. The snowfall level was between 2200 and 2600 m.
From Monday evening to Tuesday afternoon in the high alpine regions:
At midday at 2000 m, around +6 \u00b0C
Light to moderate southwesterly
" } }, { "avalancheProblems": [ { "customData": { "CH": { "subdivision": null } }, "problemType": "wet_snow", "comment": "As a consequence of the rain wet avalanches are possible at any time, in particular medium-sized ones. This applies in particular on very steep north facing slopes below approximately 2500 m, as well as on very steep east, south and west facing slopes between approximately 2500 and 3000 m.Moisture penetration into the snowpack is well advanced. The most precarious areas are slopes where weak layers in the old snowpack are becoming wet for the first time. At present, this mainly affects north-facing slopes between approximately 2200 and 2500 m, and east- and west-facing slopes between approximately 2500 and 2800 m. In many places, south-facing slopes are snow-free up to around 3000 m; where there is still snow, moisture penetration extends as far as the high alpine regions.
In Grisons, wet slab avalanches can occasionally be triggered by human activity in the weak old snowpack. At altitudes where the snowpack is still dry, weak layers in the old snowpack are still present, but are unlikely to be triggered anymore.
With the rain, the danger of wet avalanches is elevated even in the late morning.
" }, "source": { "provider": { "name": "SLF", "website": "https://whiterisk.ch/en/conditions" } }, "tendency": [ { "comment": "In the north, the nights into Thursday and Friday will be mostly clear and it will be quite sunny during both days. In the south, the nights will often be overcast. It will be only partly sunny during the day on Thursday, and quite sunny on Friday. Winds will mainly be light. The zero-degree level will be around 3000 m. The danger of dry avalanches will decrease rapidly again in the high alpine regions. With sunshine and warming temperatures during the day, the danger of wet avalanches will increase as each day progresses, increasing faster in the south after an overcast night.
" } ], "unscheduled": false, "validTime": { "startTime": "2026-04-28T15:00:00+00:00", "endTime": "2026-04-29T15:00:00+00:00" }, "weatherForecast": { "comment": "The night will be overcast with bright spells. There will be some widespread precipitation until the late morning. During the day it will be cloudy with showers and bright spells in the afternoon, mainly in the west. The snowfall level will be between 2200 and 2600 m.
In the high alpine regions, a widespread 5 bis 15 cm
At midday at 2000 m, between +7 \u00b0C in the west and +4 \u00b0C in the east
Mostly light; moderate westerly wind for a time during the night in the high alpine regions, moderate Bise wind in the Prealps during the day
" }, "weatherReview": { "comment": "The night was partly clear in the north and overcast in the south. There were showers during the night and in the late morning, mainly in the south, and increasingly in all regions in the afternoon. The snowfall level was between 2200 and 2600 m.
From Monday evening to Tuesday afternoon in the high alpine regions:
At midday at 2000 m, around +6 \u00b0C
Light to moderate southwesterly
" } }, { "avalancheProblems": [ { "customData": { "CH": { "subdivision": null } }, "problemType": "wet_snow", "comment": "The early morning will see favourable conditions. As a consequence of warming during the day and solar radiation individual wet and gliding avalanches are possible. Restraint should be exercised because avalanches can sweep people along and give rise to falls.", "dangerRatingValue": "low", "validTimePeriod": "all_day" }, { "customData": { "CH": { "subdivision": null } }, "problemType": "gliding_snow", "comment": "The early morning will see favourable conditions. As a consequence of warming during the day and solar radiation individual wet and gliding avalanches are possible. Restraint should be exercised because avalanches can sweep people along and give rise to falls.", "dangerRatingValue": "low", "validTimePeriod": "all_day" } ], "bulletinID": "a3a26ef5-94d4-48f6-ae58-7c76db0e0939", "customData": { "CH": { "aggregation": [ { "category": "wet", "validTimePeriod": "all_day", "problemTypes": [ "wet_snow", "gliding_snow" ] } ] }, "ALBINA": { "mainDate": "2026-04-29" } }, "dangerRatings": [ { "mainValue": "low", "validTimePeriod": "all_day", "customData": { "CH": { "subdivision": null } } } ], "lang": "en", "nextUpdate": "2026-04-29T15:00:00+00:00", "publicationTime": "2026-04-28T15:00:00+00:00", "regions": [ { "regionID": "CH-1311", "name": "Vouvry" }, { "regionID": "CH-1213", "name": "Hohgant" }, { "regionID": "CH-2133", "name": "Stoos" }, { "regionID": "CH-3111", "name": "Glarus Nord" }, { "regionID": "CH-2132", "name": "Ybrig" }, { "regionID": "CH-2124", "name": "Gersau" }, { "regionID": "CH-1111", "name": "Waadtl\u00e4nder Voralpen" }, { "regionID": "CH-1113", "name": "Aigle-Leysin" }, { "regionID": "CH-2111", "name": "Pilatus" }, { "regionID": "CH-2121", "name": "Glaubenberg" }, { "regionID": "CH-1221", "name": "Niedersimmental" }, { "regionID": "CH-1121", "name": "Jaun" } ], "snowpackStructure": { "comment": "Moisture penetration into the snowpack is well advanced. The most precarious areas are slopes where weak layers in the old snowpack are becoming wet for the first time. At present, this mainly affects north-facing slopes between approximately 2200 and 2500 m, and east- and west-facing slopes between approximately 2500 and 2800 m. In many places, south-facing slopes are snow-free up to around 3000 m; where there is still snow, moisture penetration extends as far as the high alpine regions.
In Grisons, wet slab avalanches can occasionally be triggered by human activity in the weak old snowpack. At altitudes where the snowpack is still dry, weak layers in the old snowpack are still present, but are unlikely to be triggered anymore.
With the rain, the danger of wet avalanches is elevated even in the late morning.
" }, "source": { "provider": { "name": "SLF", "website": "https://whiterisk.ch/en/conditions" } }, "tendency": [ { "comment": "In the north, the nights into Thursday and Friday will be mostly clear and it will be quite sunny during both days. In the south, the nights will often be overcast. It will be only partly sunny during the day on Thursday, and quite sunny on Friday. Winds will mainly be light. The zero-degree level will be around 3000 m. The danger of dry avalanches will decrease rapidly again in the high alpine regions. With sunshine and warming temperatures during the day, the danger of wet avalanches will increase as each day progresses, increasing faster in the south after an overcast night.
" } ], "unscheduled": false, "validTime": { "startTime": "2026-04-28T15:00:00+00:00", "endTime": "2026-04-29T15:00:00+00:00" }, "weatherForecast": { "comment": "The night will be overcast with bright spells. There will be some widespread precipitation until the late morning. During the day it will be cloudy with showers and bright spells in the afternoon, mainly in the west. The snowfall level will be between 2200 and 2600 m.
In the high alpine regions, a widespread 5 bis 15 cm
At midday at 2000 m, between +7 \u00b0C in the west and +4 \u00b0C in the east
Mostly light; moderate westerly wind for a time during the night in the high alpine regions, moderate Bise wind in the Prealps during the day
" }, "weatherReview": { "comment": "The night was partly clear in the north and overcast in the south. There were showers during the night and in the late morning, mainly in the south, and increasingly in all regions in the afternoon. The snowfall level was between 2200 and 2600 m.
From Monday evening to Tuesday afternoon in the high alpine regions:
At midday at 2000 m, around +6 \u00b0C
Light to moderate southwesterly
" } } ], "customData": { "CH": { "base": "684c8c56-4089-46a6-80fd-e1c971eaff2b:200" } } }