The sometimes large amounts of new snow and wind-drifted snow in the extreme west of Lower Valais, in the north, and in large parts of Grisons are in some cases still prone to triggering. In the other regions, more recent snowdrift accumulations are in some cases still prone to triggering, but are mostly smaller. In addition, avalanches can be triggered in the upper layers of the underlying old snowpack, especially on north- and east-facing slopes.
As a consequence of solar radiation, numerous loose snow avalanches are to be expected from the new fallen snow, especially in the regions exposed to heavier precipitation.
" }, "source": { "provider": { "name": "SLF", "website": "https://whiterisk.ch/en/conditions" } }, "tendency": [ { "comment": "Sunday night into Monday will be partly clear in the east, and cloudy elsewhere. In the morning, there will still be bright spells in the east; elsewhere, it will be mostly cloudy with showers, especially along the northern flank of the Alps. The snowfall level will be just below 2000 m. On Tuesday, it will initially be sunny in the west after a mostly clear night. As the day progresses, clouds will gather. In the east, after a cloudy night, some residual cloud will remain in the morning. After that, there will be brighter intervals. Conditions will be very sunny in the south. On both days, the wind will blow from westerly directions and will remain moderate at times in the north on Monday, and light on Tuesday. The zero-degree level will be 2200 m in the north and 2500 m in the south, gradually rising a little as the day progresses on Tuesday.
The danger of dry avalanches will decrease, but only slowly on very steep north-facing slopes in the high alpine regions. Wet avalanches are to be expected in the near-surface layers on very steep terrain, particularly as a consequence of solar radiation.
" } ], "unscheduled": false, "validTime": { "startTime": "2026-05-16T15:00:00+00:00", "endTime": "2026-05-17T15:00:00+00:00" }, "weatherForecast": { "comment": "After a mostly clear night, it will be quite sunny. As the day progresses, there will be cumulus clouds and an increasing amount of high-level cloud cover.
-
At midday at 2000 m, between 0 \u00b0C in the north and +3 \u00b0C in the south
Shifting to southwesterly and mostly light
" }, "weatherReview": { "comment": "In the north and in Grisons, snow fell above approximately 1300 m, increasingly in the form of showers during the day. In Valais, conditions were changeable with extended bright spells. In the south, conditions were very sunny.
From Friday afternoon to Saturday afternoon, the following amounts of fresh snow fell above approximately 2000 m:
Over the three days from Wednesday evening to Saturday afternoon, altitudes above approximately 2000 m thus saw the following snowfall:
At midday at 2000 m, between -3 \u00b0C in the north and +2 \u00b0C in the south
Moderate to strong along the central and eastern Main Alpine Ridge, otherwise light to moderate from northerly directions
" } }, { "avalancheProblems": [ { "customData": { "CH": { "subdivision": "minus", "coreZoneText": "Danger level \"considerable\" (3-) in all aspects above 2600m." } }, "problemType": "new_snow", "aspects": [ "N", "NE", "E", "SE", "S", "SW", "W", "NW" ], "comment": "The fresh snow and the wind slabs formed by the northerly wind can be released by a single winter sport participant. Dry avalanches can additionally be released in deeper layers in particular on very steep north and east facing slopes. Avalanches can reach large size. Ski touring calls for experience in the assessment of avalanche danger.The sometimes large amounts of new snow and wind-drifted snow in the extreme west of Lower Valais, in the north, and in large parts of Grisons are in some cases still prone to triggering. In the other regions, more recent snowdrift accumulations are in some cases still prone to triggering, but are mostly smaller. In addition, avalanches can be triggered in the upper layers of the underlying old snowpack, especially on north- and east-facing slopes.
As a consequence of solar radiation, numerous loose snow avalanches are to be expected from the new fallen snow, especially in the regions exposed to heavier precipitation.
" }, "source": { "provider": { "name": "SLF", "website": "https://whiterisk.ch/en/conditions" } }, "tendency": [ { "comment": "Sunday night into Monday will be partly clear in the east, and cloudy elsewhere. In the morning, there will still be bright spells in the east; elsewhere, it will be mostly cloudy with showers, especially along the northern flank of the Alps. The snowfall level will be just below 2000 m. On Tuesday, it will initially be sunny in the west after a mostly clear night. As the day progresses, clouds will gather. In the east, after a cloudy night, some residual cloud will remain in the morning. After that, there will be brighter intervals. Conditions will be very sunny in the south. On both days, the wind will blow from westerly directions and will remain moderate at times in the north on Monday, and light on Tuesday. The zero-degree level will be 2200 m in the north and 2500 m in the south, gradually rising a little as the day progresses on Tuesday.
The danger of dry avalanches will decrease, but only slowly on very steep north-facing slopes in the high alpine regions. Wet avalanches are to be expected in the near-surface layers on very steep terrain, particularly as a consequence of solar radiation.
" } ], "unscheduled": false, "validTime": { "startTime": "2026-05-16T15:00:00+00:00", "endTime": "2026-05-17T15:00:00+00:00" }, "weatherForecast": { "comment": "After a mostly clear night, it will be quite sunny. As the day progresses, there will be cumulus clouds and an increasing amount of high-level cloud cover.
-
At midday at 2000 m, between 0 \u00b0C in the north and +3 \u00b0C in the south
Shifting to southwesterly and mostly light
" }, "weatherReview": { "comment": "In the north and in Grisons, snow fell above approximately 1300 m, increasingly in the form of showers during the day. In Valais, conditions were changeable with extended bright spells. In the south, conditions were very sunny.
From Friday afternoon to Saturday afternoon, the following amounts of fresh snow fell above approximately 2000 m:
Over the three days from Wednesday evening to Saturday afternoon, altitudes above approximately 2000 m thus saw the following snowfall:
At midday at 2000 m, between -3 \u00b0C in the north and +2 \u00b0C in the south
Moderate to strong along the central and eastern Main Alpine Ridge, otherwise light to moderate from northerly directions
" } }, { "avalancheProblems": [ { "customData": { "CH": { "subdivision": "plus", "coreZoneText": "Danger level \"moderate\" (2+) in all aspects above 2400m." } }, "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 prone to triggering. Additionally avalanches can also be released in near-surface layers and reach medium size. These avalanche prone locations are rather rare but are barely recognisable. Careful route selection is recommended.The sometimes large amounts of new snow and wind-drifted snow in the extreme west of Lower Valais, in the north, and in large parts of Grisons are in some cases still prone to triggering. In the other regions, more recent snowdrift accumulations are in some cases still prone to triggering, but are mostly smaller. In addition, avalanches can be triggered in the upper layers of the underlying old snowpack, especially on north- and east-facing slopes.
As a consequence of solar radiation, numerous loose snow avalanches are to be expected from the new fallen snow, especially in the regions exposed to heavier precipitation.
" }, "source": { "provider": { "name": "SLF", "website": "https://whiterisk.ch/en/conditions" } }, "tendency": [ { "comment": "Sunday night into Monday will be partly clear in the east, and cloudy elsewhere. In the morning, there will still be bright spells in the east; elsewhere, it will be mostly cloudy with showers, especially along the northern flank of the Alps. The snowfall level will be just below 2000 m. On Tuesday, it will initially be sunny in the west after a mostly clear night. As the day progresses, clouds will gather. In the east, after a cloudy night, some residual cloud will remain in the morning. After that, there will be brighter intervals. Conditions will be very sunny in the south. On both days, the wind will blow from westerly directions and will remain moderate at times in the north on Monday, and light on Tuesday. The zero-degree level will be 2200 m in the north and 2500 m in the south, gradually rising a little as the day progresses on Tuesday.
The danger of dry avalanches will decrease, but only slowly on very steep north-facing slopes in the high alpine regions. Wet avalanches are to be expected in the near-surface layers on very steep terrain, particularly as a consequence of solar radiation.
" } ], "unscheduled": false, "validTime": { "startTime": "2026-05-16T15:00:00+00:00", "endTime": "2026-05-17T15:00:00+00:00" }, "weatherForecast": { "comment": "After a mostly clear night, it will be quite sunny. As the day progresses, there will be cumulus clouds and an increasing amount of high-level cloud cover.
-
At midday at 2000 m, between 0 \u00b0C in the north and +3 \u00b0C in the south
Shifting to southwesterly and mostly light
" }, "weatherReview": { "comment": "In the north and in Grisons, snow fell above approximately 1300 m, increasingly in the form of showers during the day. In Valais, conditions were changeable with extended bright spells. In the south, conditions were very sunny.
From Friday afternoon to Saturday afternoon, the following amounts of fresh snow fell above approximately 2000 m:
Over the three days from Wednesday evening to Saturday afternoon, altitudes above approximately 2000 m thus saw the following snowfall:
At midday at 2000 m, between -3 \u00b0C in the north and +2 \u00b0C in the south
Moderate to strong along the central and eastern Main Alpine Ridge, otherwise light to moderate from northerly directions
" } }, { "avalancheProblems": [ { "customData": { "CH": { "subdivision": "neutral", "coreZoneText": "Danger level \"moderate\" (2=) in northwest to northeast to southeast facing aspects above 2000m." } }, "problemType": "wind_slab", "aspects": [ "N", "NE", "E", "SE", "NW" ], "comment": "The more recent wind slabs are in some cases still prone to triggering. The avalanche prone locations are to be found in particular in gullies and bowls, and behind abrupt changes in the terrain. Avalanches can reach medium size. Careful route selection is recommended.The sometimes large amounts of new snow and wind-drifted snow in the extreme west of Lower Valais, in the north, and in large parts of Grisons are in some cases still prone to triggering. In the other regions, more recent snowdrift accumulations are in some cases still prone to triggering, but are mostly smaller. In addition, avalanches can be triggered in the upper layers of the underlying old snowpack, especially on north- and east-facing slopes.
As a consequence of solar radiation, numerous loose snow avalanches are to be expected from the new fallen snow, especially in the regions exposed to heavier precipitation.
" }, "source": { "provider": { "name": "SLF", "website": "https://whiterisk.ch/en/conditions" } }, "tendency": [ { "comment": "Sunday night into Monday will be partly clear in the east, and cloudy elsewhere. In the morning, there will still be bright spells in the east; elsewhere, it will be mostly cloudy with showers, especially along the northern flank of the Alps. The snowfall level will be just below 2000 m. On Tuesday, it will initially be sunny in the west after a mostly clear night. As the day progresses, clouds will gather. In the east, after a cloudy night, some residual cloud will remain in the morning. After that, there will be brighter intervals. Conditions will be very sunny in the south. On both days, the wind will blow from westerly directions and will remain moderate at times in the north on Monday, and light on Tuesday. The zero-degree level will be 2200 m in the north and 2500 m in the south, gradually rising a little as the day progresses on Tuesday.
The danger of dry avalanches will decrease, but only slowly on very steep north-facing slopes in the high alpine regions. Wet avalanches are to be expected in the near-surface layers on very steep terrain, particularly as a consequence of solar radiation.
" } ], "unscheduled": false, "validTime": { "startTime": "2026-05-16T15:00:00+00:00", "endTime": "2026-05-17T15:00:00+00:00" }, "weatherForecast": { "comment": "After a mostly clear night, it will be quite sunny. As the day progresses, there will be cumulus clouds and an increasing amount of high-level cloud cover.
-
At midday at 2000 m, between 0 \u00b0C in the north and +3 \u00b0C in the south
Shifting to southwesterly and mostly light
" }, "weatherReview": { "comment": "In the north and in Grisons, snow fell above approximately 1300 m, increasingly in the form of showers during the day. In Valais, conditions were changeable with extended bright spells. In the south, conditions were very sunny.
From Friday afternoon to Saturday afternoon, the following amounts of fresh snow fell above approximately 2000 m:
Over the three days from Wednesday evening to Saturday afternoon, altitudes above approximately 2000 m thus saw the following snowfall:
At midday at 2000 m, between -3 \u00b0C in the north and +2 \u00b0C in the south
Moderate to strong along the central and eastern Main Alpine Ridge, otherwise light to moderate from northerly directions
" } }, { "avalancheProblems": [ { "customData": { "CH": { "subdivision": "neutral", "coreZoneText": "Danger level \"moderate\" (2=) in northwest to northeast to southeast facing aspects above 2600m." } }, "problemType": "wind_slab", "aspects": [ "N", "NE", "E", "SE", "NW" ], "comment": "Fresh and somewhat older wind slabs are in some cases still prone to triggering. They are rather small. The wind slabs are to be evaluated with care and prudence in very steep terrain. 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.The sometimes large amounts of new snow and wind-drifted snow in the extreme west of Lower Valais, in the north, and in large parts of Grisons are in some cases still prone to triggering. In the other regions, more recent snowdrift accumulations are in some cases still prone to triggering, but are mostly smaller. In addition, avalanches can be triggered in the upper layers of the underlying old snowpack, especially on north- and east-facing slopes.
As a consequence of solar radiation, numerous loose snow avalanches are to be expected from the new fallen snow, especially in the regions exposed to heavier precipitation.
" }, "source": { "provider": { "name": "SLF", "website": "https://whiterisk.ch/en/conditions" } }, "tendency": [ { "comment": "Sunday night into Monday will be partly clear in the east, and cloudy elsewhere. In the morning, there will still be bright spells in the east; elsewhere, it will be mostly cloudy with showers, especially along the northern flank of the Alps. The snowfall level will be just below 2000 m. On Tuesday, it will initially be sunny in the west after a mostly clear night. As the day progresses, clouds will gather. In the east, after a cloudy night, some residual cloud will remain in the morning. After that, there will be brighter intervals. Conditions will be very sunny in the south. On both days, the wind will blow from westerly directions and will remain moderate at times in the north on Monday, and light on Tuesday. The zero-degree level will be 2200 m in the north and 2500 m in the south, gradually rising a little as the day progresses on Tuesday.
The danger of dry avalanches will decrease, but only slowly on very steep north-facing slopes in the high alpine regions. Wet avalanches are to be expected in the near-surface layers on very steep terrain, particularly as a consequence of solar radiation.
" } ], "unscheduled": false, "validTime": { "startTime": "2026-05-16T15:00:00+00:00", "endTime": "2026-05-17T15:00:00+00:00" }, "weatherForecast": { "comment": "After a mostly clear night, it will be quite sunny. As the day progresses, there will be cumulus clouds and an increasing amount of high-level cloud cover.
-
At midday at 2000 m, between 0 \u00b0C in the north and +3 \u00b0C in the south
Shifting to southwesterly and mostly light
" }, "weatherReview": { "comment": "In the north and in Grisons, snow fell above approximately 1300 m, increasingly in the form of showers during the day. In Valais, conditions were changeable with extended bright spells. In the south, conditions were very sunny.
From Friday afternoon to Saturday afternoon, the following amounts of fresh snow fell above approximately 2000 m:
Over the three days from Wednesday evening to Saturday afternoon, altitudes above approximately 2000 m thus saw the following snowfall:
At midday at 2000 m, between -3 \u00b0C in the north and +2 \u00b0C in the south
Moderate to strong along the central and eastern Main Alpine Ridge, otherwise light to moderate from northerly directions
" } } ], "customData": { "CH": { "base": "bc7e214b-1d56-4b91-9389-54256c974f0a:214" } } }