With the sometimes strong Bise wind on Wednesday, some rather small but in some cases prone to triggering snowdrift accumulations will form, particularly along the Prealps and in the Jura. Otherwise, the large amounts of new snow and drifted snow in the north will slowly stabilise. In some places, however, the new snow of recent days is overlaid on faceted weak layers and in some cases also buried surface hoar, particularly on shady slopes. In these weak layers, avalanches can be triggered, including large ones.
In the inneralpine regions of Valais and especially Grisons, weak layers deeper in the snowpack are still prone to triggering in some places. Isolated avalanches may also be triggered in near-ground weak layers.
" }, "source": { "provider": { "name": "SLF", "website": "https://whiterisk.ch/en/conditions" } }, "tendency": [ { "comment": "In the west and south, it will be mostly sunny on both days. It will be partly cloudy along the Prealps and generally in the east. On Friday, light showers are possible in the east. In the mountains there will be a partly moderate northeasterly wind, with a moderate Bise wind in the Jura. The zero-degree level will rise to around 1600 m in the north and to 2200 m in the south.
The danger of dry avalanches will decrease. During the course of the day, moist loose snow avalanches from the loose snow and also gliding avalanches are to be expected.
" } ], "unscheduled": false, "validTime": { "startTime": "2026-04-01T06:00:00+00:00", "endTime": "2026-04-01T15:00:00+00:00" }, "weatherForecast": { "comment": "In the north, a few more centimetres of snow will fall during the night down to low altitudes. There will be bright spells during the day. In the west and south, it will be mostly sunny after a clear night.
A few centimetres in the north.
At midday at 2000 m, around -8 \u00b0C in the north and -3 \u00b0C in the south
Overnight to Tuesday, there was widespread snow down to low altitudes, with heavy snowfall in the north. During the day, the snowfall decreased appreciably. There were bright spells, particularly in southern Valais and Ticino.
From Monday morning to Tuesday afternoon above approximately 1600 m:
At midday at 2000 m, between -9 \u00b0C in the north and -4 \u00b0C in the south
Strong from the north
" } }, { "avalancheProblems": [ { "customData": { "CH": { "subdivision": "neutral", "coreZoneText": "Danger level \"considerable\" (3=) in all aspects above 2000m." } }, "problemType": "new_snow", "aspects": [ "N", "NE", "E", "SE", "S", "SW", "W", "NW" ], "comment": "The new snow and wind slabs of the last few days are prone to triggering. Single winter sport participants can release avalanches. These can be released in the new snow and wind slab layers and reach large size in isolated cases.With the sometimes strong Bise wind on Wednesday, some rather small but in some cases prone to triggering snowdrift accumulations will form, particularly along the Prealps and in the Jura. Otherwise, the large amounts of new snow and drifted snow in the north will slowly stabilise. In some places, however, the new snow of recent days is overlaid on faceted weak layers and in some cases also buried surface hoar, particularly on shady slopes. In these weak layers, avalanches can be triggered, including large ones.
In the inneralpine regions of Valais and especially Grisons, weak layers deeper in the snowpack are still prone to triggering in some places. Isolated avalanches may also be triggered in near-ground weak layers.
" }, "source": { "provider": { "name": "SLF", "website": "https://whiterisk.ch/en/conditions" } }, "tendency": [ { "comment": "In the west and south, it will be mostly sunny on both days. It will be partly cloudy along the Prealps and generally in the east. On Friday, light showers are possible in the east. In the mountains there will be a partly moderate northeasterly wind, with a moderate Bise wind in the Jura. The zero-degree level will rise to around 1600 m in the north and to 2200 m in the south.
The danger of dry avalanches will decrease. During the course of the day, moist loose snow avalanches from the loose snow and also gliding avalanches are to be expected.
" } ], "unscheduled": false, "validTime": { "startTime": "2026-04-01T06:00:00+00:00", "endTime": "2026-04-01T15:00:00+00:00" }, "weatherForecast": { "comment": "In the north, a few more centimetres of snow will fall during the night down to low altitudes. There will be bright spells during the day. In the west and south, it will be mostly sunny after a clear night.
A few centimetres in the north.
At midday at 2000 m, around -8 \u00b0C in the north and -3 \u00b0C in the south
Overnight to Tuesday, there was widespread snow down to low altitudes, with heavy snowfall in the north. During the day, the snowfall decreased appreciably. There were bright spells, particularly in southern Valais and Ticino.
From Monday morning to Tuesday afternoon above approximately 1600 m:
At midday at 2000 m, between -9 \u00b0C in the north and -4 \u00b0C in the south
Strong from the north
" } }, { "avalancheProblems": [ { "customData": { "CH": { "subdivision": "neutral", "coreZoneText": "Danger level \"considerable\" (3=) in all aspects above 1600m." } }, "problemType": "new_snow", "aspects": [ "N", "NE", "E", "SE", "S", "SW", "W", "NW" ], "comment": "The new snow and wind slabs of the last few days are prone to triggering. Even single winter sport participants can release avalanches,, also below the tree line. Mostly the avalanches are medium-sized.With the sometimes strong Bise wind on Wednesday, some rather small but in some cases prone to triggering snowdrift accumulations will form, particularly along the Prealps and in the Jura. Otherwise, the large amounts of new snow and drifted snow in the north will slowly stabilise. In some places, however, the new snow of recent days is overlaid on faceted weak layers and in some cases also buried surface hoar, particularly on shady slopes. In these weak layers, avalanches can be triggered, including large ones.
In the inneralpine regions of Valais and especially Grisons, weak layers deeper in the snowpack are still prone to triggering in some places. Isolated avalanches may also be triggered in near-ground weak layers.
" }, "source": { "provider": { "name": "SLF", "website": "https://whiterisk.ch/en/conditions" } }, "tendency": [ { "comment": "In the west and south, it will be mostly sunny on both days. It will be partly cloudy along the Prealps and generally in the east. On Friday, light showers are possible in the east. In the mountains there will be a partly moderate northeasterly wind, with a moderate Bise wind in the Jura. The zero-degree level will rise to around 1600 m in the north and to 2200 m in the south.
The danger of dry avalanches will decrease. During the course of the day, moist loose snow avalanches from the loose snow and also gliding avalanches are to be expected.
" } ], "unscheduled": false, "validTime": { "startTime": "2026-04-01T06:00:00+00:00", "endTime": "2026-04-01T15:00:00+00:00" }, "weatherForecast": { "comment": "In the north, a few more centimetres of snow will fall during the night down to low altitudes. There will be bright spells during the day. In the west and south, it will be mostly sunny after a clear night.
A few centimetres in the north.
At midday at 2000 m, around -8 \u00b0C in the north and -3 \u00b0C in the south
Overnight to Tuesday, there was widespread snow down to low altitudes, with heavy snowfall in the north. During the day, the snowfall decreased appreciably. There were bright spells, particularly in southern Valais and Ticino.
From Monday morning to Tuesday afternoon above approximately 1600 m:
At midday at 2000 m, between -9 \u00b0C in the north and -4 \u00b0C in the south
Strong from the north
" } }, { "avalancheProblems": [ { "customData": { "CH": { "subdivision": "neutral", "coreZoneText": "Danger level \"considerable\" (3=) in all aspects above 2000m." } }, "problemType": "new_snow", "aspects": [ "N", "NE", "E", "SE", "S", "SW", "W", "NW" ], "comment": "The new snow and wind slabs are prone to triggering. Single winter sport participants can release avalanches. These can also be triggered in deep layers and reach large size.With the sometimes strong Bise wind on Wednesday, some rather small but in some cases prone to triggering snowdrift accumulations will form, particularly along the Prealps and in the Jura. Otherwise, the large amounts of new snow and drifted snow in the north will slowly stabilise. In some places, however, the new snow of recent days is overlaid on faceted weak layers and in some cases also buried surface hoar, particularly on shady slopes. In these weak layers, avalanches can be triggered, including large ones.
In the inneralpine regions of Valais and especially Grisons, weak layers deeper in the snowpack are still prone to triggering in some places. Isolated avalanches may also be triggered in near-ground weak layers.
" }, "source": { "provider": { "name": "SLF", "website": "https://whiterisk.ch/en/conditions" } }, "tendency": [ { "comment": "In the west and south, it will be mostly sunny on both days. It will be partly cloudy along the Prealps and generally in the east. On Friday, light showers are possible in the east. In the mountains there will be a partly moderate northeasterly wind, with a moderate Bise wind in the Jura. The zero-degree level will rise to around 1600 m in the north and to 2200 m in the south.
The danger of dry avalanches will decrease. During the course of the day, moist loose snow avalanches from the loose snow and also gliding avalanches are to be expected.
" } ], "unscheduled": false, "validTime": { "startTime": "2026-04-01T06:00:00+00:00", "endTime": "2026-04-01T15:00:00+00:00" }, "weatherForecast": { "comment": "In the north, a few more centimetres of snow will fall during the night down to low altitudes. There will be bright spells during the day. In the west and south, it will be mostly sunny after a clear night.
A few centimetres in the north.
At midday at 2000 m, around -8 \u00b0C in the north and -3 \u00b0C in the south
Overnight to Tuesday, there was widespread snow down to low altitudes, with heavy snowfall in the north. During the day, the snowfall decreased appreciably. There were bright spells, particularly in southern Valais and Ticino.
From Monday morning to Tuesday afternoon above approximately 1600 m:
At midday at 2000 m, between -9 \u00b0C in the north and -4 \u00b0C in the south
Strong from the north
" } }, { "avalancheProblems": [ { "customData": { "CH": { "subdivision": "neutral", "coreZoneText": "Danger level \"considerable\" (3=) in all aspects above 2200m." } }, "problemType": "wind_slab", "aspects": [ "N", "NE", "E", "SE", "S", "SW", "W", "NW" ], "comment": "The new snow and wind slabs of the last few days are prone to triggering. Single winter sport participants can release avalanches. Additionally avalanches can also be triggered in deep layers and reach large size. This applies in particular on steep, little used shady slopes.With the sometimes strong Bise wind on Wednesday, some rather small but in some cases prone to triggering snowdrift accumulations will form, particularly along the Prealps and in the Jura. Otherwise, the large amounts of new snow and drifted snow in the north will slowly stabilise. In some places, however, the new snow of recent days is overlaid on faceted weak layers and in some cases also buried surface hoar, particularly on shady slopes. In these weak layers, avalanches can be triggered, including large ones.
In the inneralpine regions of Valais and especially Grisons, weak layers deeper in the snowpack are still prone to triggering in some places. Isolated avalanches may also be triggered in near-ground weak layers.
" }, "source": { "provider": { "name": "SLF", "website": "https://whiterisk.ch/en/conditions" } }, "tendency": [ { "comment": "In the west and south, it will be mostly sunny on both days. It will be partly cloudy along the Prealps and generally in the east. On Friday, light showers are possible in the east. In the mountains there will be a partly moderate northeasterly wind, with a moderate Bise wind in the Jura. The zero-degree level will rise to around 1600 m in the north and to 2200 m in the south.
The danger of dry avalanches will decrease. During the course of the day, moist loose snow avalanches from the loose snow and also gliding avalanches are to be expected.
" } ], "unscheduled": false, "validTime": { "startTime": "2026-04-01T06:00:00+00:00", "endTime": "2026-04-01T15:00:00+00:00" }, "weatherForecast": { "comment": "In the north, a few more centimetres of snow will fall during the night down to low altitudes. There will be bright spells during the day. In the west and south, it will be mostly sunny after a clear night.
A few centimetres in the north.
At midday at 2000 m, around -8 \u00b0C in the north and -3 \u00b0C in the south
Overnight to Tuesday, there was widespread snow down to low altitudes, with heavy snowfall in the north. During the day, the snowfall decreased appreciably. There were bright spells, particularly in southern Valais and Ticino.
From Monday morning to Tuesday afternoon above approximately 1600 m:
At midday at 2000 m, between -9 \u00b0C in the north and -4 \u00b0C in the south
Strong from the north
" } }, { "avalancheProblems": [ { "customData": { "CH": { "subdivision": "minus", "coreZoneText": "Danger level \"considerable\" (3-) in all aspects above 1600m." } }, "problemType": "new_snow", "aspects": [ "N", "NE", "E", "SE", "S", "SW", "W", "NW" ], "comment": "The new snow and wind slabs of the last few days are in some cases still prone to triggering. As a consequence of a strengthening bise wind, further wind slabs will form in the course of the day. These are to be found in particular in gullies and bowls, and behind abrupt changes in the terrain. Single snow sport participants can release avalanches in some places,, also below the tree line. Avalanches can reach medium size.With the sometimes strong Bise wind on Wednesday, some rather small but in some cases prone to triggering snowdrift accumulations will form, particularly along the Prealps and in the Jura. Otherwise, the large amounts of new snow and drifted snow in the north will slowly stabilise. In some places, however, the new snow of recent days is overlaid on faceted weak layers and in some cases also buried surface hoar, particularly on shady slopes. In these weak layers, avalanches can be triggered, including large ones.
In the inneralpine regions of Valais and especially Grisons, weak layers deeper in the snowpack are still prone to triggering in some places. Isolated avalanches may also be triggered in near-ground weak layers.
" }, "source": { "provider": { "name": "SLF", "website": "https://whiterisk.ch/en/conditions" } }, "tendency": [ { "comment": "In the west and south, it will be mostly sunny on both days. It will be partly cloudy along the Prealps and generally in the east. On Friday, light showers are possible in the east. In the mountains there will be a partly moderate northeasterly wind, with a moderate Bise wind in the Jura. The zero-degree level will rise to around 1600 m in the north and to 2200 m in the south.
The danger of dry avalanches will decrease. During the course of the day, moist loose snow avalanches from the loose snow and also gliding avalanches are to be expected.
" } ], "unscheduled": false, "validTime": { "startTime": "2026-04-01T06:00:00+00:00", "endTime": "2026-04-01T15:00:00+00:00" }, "weatherForecast": { "comment": "In the north, a few more centimetres of snow will fall during the night down to low altitudes. There will be bright spells during the day. In the west and south, it will be mostly sunny after a clear night.
A few centimetres in the north.
At midday at 2000 m, around -8 \u00b0C in the north and -3 \u00b0C in the south
Overnight to Tuesday, there was widespread snow down to low altitudes, with heavy snowfall in the north. During the day, the snowfall decreased appreciably. There were bright spells, particularly in southern Valais and Ticino.
From Monday morning to Tuesday afternoon above approximately 1600 m:
At midday at 2000 m, between -9 \u00b0C in the north and -4 \u00b0C in the south
Strong from the north
" } }, { "avalancheProblems": [ { "customData": { "CH": { "subdivision": "minus", "coreZoneText": "Danger level \"considerable\" (3-) in all aspects above 2200m." } }, "problemType": "wind_slab", "aspects": [ "N", "NE", "E", "SE", "S", "SW", "W", "NW" ], "comment": "Fresh and somewhat older wind slabs are to be found in gullies and bowls, and behind abrupt changes in the terrain. They are in some cases prone to triggering. The wind slabs are to be evaluated with care and prudence in steep terrain. In some places avalanches can also be released in the old snowpack and reach large size in isolated cases. These avalanche prone locations are barely recognisable, even to the trained eye. Caution is to be exercised on little-used, rather lightly snow-covered shady slopes.With the sometimes strong Bise wind on Wednesday, some rather small but in some cases prone to triggering snowdrift accumulations will form, particularly along the Prealps and in the Jura. Otherwise, the large amounts of new snow and drifted snow in the north will slowly stabilise. In some places, however, the new snow of recent days is overlaid on faceted weak layers and in some cases also buried surface hoar, particularly on shady slopes. In these weak layers, avalanches can be triggered, including large ones.
In the inneralpine regions of Valais and especially Grisons, weak layers deeper in the snowpack are still prone to triggering in some places. Isolated avalanches may also be triggered in near-ground weak layers.
" }, "source": { "provider": { "name": "SLF", "website": "https://whiterisk.ch/en/conditions" } }, "tendency": [ { "comment": "In the west and south, it will be mostly sunny on both days. It will be partly cloudy along the Prealps and generally in the east. On Friday, light showers are possible in the east. In the mountains there will be a partly moderate northeasterly wind, with a moderate Bise wind in the Jura. The zero-degree level will rise to around 1600 m in the north and to 2200 m in the south.
The danger of dry avalanches will decrease. During the course of the day, moist loose snow avalanches from the loose snow and also gliding avalanches are to be expected.
" } ], "unscheduled": false, "validTime": { "startTime": "2026-04-01T06:00:00+00:00", "endTime": "2026-04-01T15:00:00+00:00" }, "weatherForecast": { "comment": "In the north, a few more centimetres of snow will fall during the night down to low altitudes. There will be bright spells during the day. In the west and south, it will be mostly sunny after a clear night.
A few centimetres in the north.
At midday at 2000 m, around -8 \u00b0C in the north and -3 \u00b0C in the south
Overnight to Tuesday, there was widespread snow down to low altitudes, with heavy snowfall in the north. During the day, the snowfall decreased appreciably. There were bright spells, particularly in southern Valais and Ticino.
From Monday morning to Tuesday afternoon above approximately 1600 m:
At midday at 2000 m, between -9 \u00b0C in the north and -4 \u00b0C in the south
Strong from the north
" } }, { "avalancheProblems": [ { "customData": { "CH": { "subdivision": "plus", "coreZoneText": "Danger level \"moderate\" (2+) in all aspects above 2000m." } }, "problemType": "wind_slab", "aspects": [ "N", "NE", "E", "SE", "S", "SW", "W", "NW" ], "comment": "The wind slabs of the last few days are in some cases still prone to triggering. They are to be found in particular in gullies and bowls, and behind abrupt changes in the terrain. They are to be evaluated with care and prudence in very steep terrain. Avalanches can in some cases reach medium size.With the sometimes strong Bise wind on Wednesday, some rather small but in some cases prone to triggering snowdrift accumulations will form, particularly along the Prealps and in the Jura. Otherwise, the large amounts of new snow and drifted snow in the north will slowly stabilise. In some places, however, the new snow of recent days is overlaid on faceted weak layers and in some cases also buried surface hoar, particularly on shady slopes. In these weak layers, avalanches can be triggered, including large ones.
In the inneralpine regions of Valais and especially Grisons, weak layers deeper in the snowpack are still prone to triggering in some places. Isolated avalanches may also be triggered in near-ground weak layers.
" }, "source": { "provider": { "name": "SLF", "website": "https://whiterisk.ch/en/conditions" } }, "tendency": [ { "comment": "In the west and south, it will be mostly sunny on both days. It will be partly cloudy along the Prealps and generally in the east. On Friday, light showers are possible in the east. In the mountains there will be a partly moderate northeasterly wind, with a moderate Bise wind in the Jura. The zero-degree level will rise to around 1600 m in the north and to 2200 m in the south.
The danger of dry avalanches will decrease. During the course of the day, moist loose snow avalanches from the loose snow and also gliding avalanches are to be expected.
" } ], "unscheduled": false, "validTime": { "startTime": "2026-04-01T06:00:00+00:00", "endTime": "2026-04-01T15:00:00+00:00" }, "weatherForecast": { "comment": "In the north, a few more centimetres of snow will fall during the night down to low altitudes. There will be bright spells during the day. In the west and south, it will be mostly sunny after a clear night.
A few centimetres in the north.
At midday at 2000 m, around -8 \u00b0C in the north and -3 \u00b0C in the south
Overnight to Tuesday, there was widespread snow down to low altitudes, with heavy snowfall in the north. During the day, the snowfall decreased appreciably. There were bright spells, particularly in southern Valais and Ticino.
From Monday morning to Tuesday afternoon above approximately 1600 m:
At midday at 2000 m, between -9 \u00b0C in the north and -4 \u00b0C in the south
Strong from the north
" } }, { "avalancheProblems": [ { "customData": { "CH": { "subdivision": "neutral", "coreZoneText": "Danger level \"moderate\" (2=) in all aspects above 1400m." } }, "problemType": "wind_slab", "aspects": [ "N", "NE", "E", "SE", "S", "SW", "W", "NW" ], "comment": "Fresh and somewhat older wind slabs are in some cases prone to triggering. The avalanche prone locations are to be found in gullies and bowls, and behind abrupt changes in the terrain. Mostly the avalanches are small. 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.", "dangerRatingValue": "moderate", "elevation": { "lowerBound": "1400" }, "validTimePeriod": "all_day" } ], "bulletinID": "3eb13cd1-2217-497d-9a08-05a87d2d0ccd", "customData": { "CH": { "aggregation": [ { "category": "dry", "validTimePeriod": "all_day", "problemTypes": [ "wind_slab" ] } ] }, "ALBINA": { "mainDate": "2026-04-01" } }, "dangerRatings": [ { "mainValue": "moderate", "validTimePeriod": "all_day", "customData": { "CH": { "subdivision": "neutral" } } } ], "lang": "en", "nextUpdate": "2026-04-01T15:00:00+00:00", "publicationTime": "2026-04-01T06:00:00+00:00", "regions": [ { "regionID": "CH-8113", "name": "Yverdon - Bevaix" }, { "regionID": "CH-8111", "name": "Saint-Cergue" }, { "regionID": "CH-1122", "name": "Gruy\u00e8re" }, { "regionID": "CH-1211", "name": "westliche Berner Voralpen" }, { "regionID": "CH-8112", "name": "Vall\u00e9e de Joux" }, { "regionID": "CH-8213", "name": "Vallon de Saint-Imier" }, { "regionID": "CH-8211", "name": "Val de Ruz - Colombier" }, { "regionID": "CH-8212", "name": "Bienne - Neuch\u00e2tel" } ], "snowpackStructure": { "comment": "With the sometimes strong Bise wind on Wednesday, some rather small but in some cases prone to triggering snowdrift accumulations will form, particularly along the Prealps and in the Jura. Otherwise, the large amounts of new snow and drifted snow in the north will slowly stabilise. In some places, however, the new snow of recent days is overlaid on faceted weak layers and in some cases also buried surface hoar, particularly on shady slopes. In these weak layers, avalanches can be triggered, including large ones.
In the inneralpine regions of Valais and especially Grisons, weak layers deeper in the snowpack are still prone to triggering in some places. Isolated avalanches may also be triggered in near-ground weak layers.
" }, "source": { "provider": { "name": "SLF", "website": "https://whiterisk.ch/en/conditions" } }, "tendency": [ { "comment": "In the west and south, it will be mostly sunny on both days. It will be partly cloudy along the Prealps and generally in the east. On Friday, light showers are possible in the east. In the mountains there will be a partly moderate northeasterly wind, with a moderate Bise wind in the Jura. The zero-degree level will rise to around 1600 m in the north and to 2200 m in the south.
The danger of dry avalanches will decrease. During the course of the day, moist loose snow avalanches from the loose snow and also gliding avalanches are to be expected.
" } ], "unscheduled": false, "validTime": { "startTime": "2026-04-01T06:00:00+00:00", "endTime": "2026-04-01T15:00:00+00:00" }, "weatherForecast": { "comment": "In the north, a few more centimetres of snow will fall during the night down to low altitudes. There will be bright spells during the day. In the west and south, it will be mostly sunny after a clear night.
A few centimetres in the north.
At midday at 2000 m, around -8 \u00b0C in the north and -3 \u00b0C in the south
Overnight to Tuesday, there was widespread snow down to low altitudes, with heavy snowfall in the north. During the day, the snowfall decreased appreciably. There were bright spells, particularly in southern Valais and Ticino.
From Monday morning to Tuesday afternoon above approximately 1600 m:
At midday at 2000 m, between -9 \u00b0C in the north and -4 \u00b0C in the south
Strong from the north
" } } ], "customData": { "CH": { "base": "d1aafd37-3167-4d69-ad0c-db0f22cf8006:42" } } }