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Avalanche bulletin through Monday, 28. November 2022

Caution urged particularly on shady slopes above 2200 to 2400 m

Edition: Fri 25.11., 17:00 Next update: Mon 28.11., 17:00 Validity

Avalanche bulletin through Monday, 28. November 2022

Caution urged particularly on shady slopes above 2200 to 2400 m

Edition [an error occurred while processing this directive] Next update [an error occurred while processing this directive] Validity

Avalanche bulletin through Monday, 28. November 2022

Caution urged particularly on shady slopes above 2200 to 2400 m

Edition Fri 25.11., 17:00 Next update Mon 28.11., 17:00 Validity

Avalanche bulletin through Monday, 28. November 2022

Caution urged particularly on shady slopes above 2200 to 2400 m

Edition Fri 25.11., 17:00 Next update Mon 28.11., 17:00 Validity

 
Avalanche danger
Lower Valais, central Valais, northern Alpine Ridge, northern Grisons and northern Lower Engadine
Avalanche prone locations for dry-snow slab avalanches are to be found particularly on shady slopes, in the western regions above approximately 2200 m, in the other regions of Switzerland above approximately 2400 m. Weak layers in the old snow are now blanketed over by layers of fresh snow and freshly generated snowdrifts, making the avalanche prone locations difficult to recognize. Medium-sized avalanches can be triggered even by one single person; and in the western and the northern Lower Valais large-sized avalanches can be triggered in isolated cases. A defensive route selection is called for.
Particularly on Sunday on sunny slopes, wet slides are possible. The danger of being swept along and forced to take a fall is the major danger: caution is urged in exposed terrain.
Remaining regions of Switzerland
Isolated avalanche prone locations for dry-snow avalanches are located particularly in extremely steep terrain at elevated altitudes. Avalanches are predominantly small-sized, but can sweep along persons and force them to take a fall.
On Sunday in particular, and on sunny slopes, isolated wet-snow slides are possible. The risks of being swept along and forced to take a fall are the focal point of danger: caution is urged in exposed terrain.
Snow and weather
Snowpack
There is still only a small amount of snow on the ground at the current time. In the furthermost western regions, some backcountry tours can be undertaken with skis, in the other regions there is still too little snow in general. The snowpack is characterized by numerous shallow layers, and on north-facing slopes in particular, above approximately 2400 m, there are layers of metamorphosed (faceted) crystals evident over widespread areas. In addition, the snowpack shows heavy influence from winds. Crests and broad ridges are nearly bare of snow. In gullies and bowls, on the other hand, there is lots of snow in some places and the roughness of the ground has been smoothed out by the snow cover.
Weather review to Wednesday, 23 November
Since Wednesday afternoon above 1200 m in the Valais, on the northern flank of the Alps and in the northern regions of Grisons, there has been 10 to 20 cm of fresh snow registered. The fresh fallen snow was transported by moderate to strong-velocity westerly to northwesterly winds particularly at elevated altitudes. In the southern regions it was predominantly dry and sunny in many places.
Weather outlook through Monday, 28 November
Between Friday afternoon and Saturday afternoon in the western and the northern regions, approximately 5 to 15 cm of fresh snow is expected to fall above approximately 1500 m. On Saturday it will become sunnier from the west. On Sunday it will be predominantly sunny and dry in all regions. On Monday, skies will frequently be overcast but hardly any significant precipitation is anticipated. On Sunday it will be very mild temporarily, with the zero-degree level over 2500 m. Until Saturday the wind will be blowing intermittently at strong velocity from northerly directions, on Sunday mostly at light strength, on Monday intermittently at moderate velocity from southerly directions.
Outlook
In the northern regions skies will tend to be gray and gloomy and intermittently a small amount of snowfall is anticipated above approximately 1000 to 1500 m. In the southern regions it will be sunny in some places. The avalanche danger is expected to incrementally decrease, particularly on shady slopes at high altitudes, however only gradually.

Keep informed about the publication of unannounced Avalanche Bulletins. Activate in the App WhiteRisk the "Push Summer Bulletin".
Avalanche danger
Lower Valais, central Valais, northern Alpine Ridge, northern Grisons and northern Lower Engadine
Avalanche prone locations for dry-snow slab avalanches are to be found particularly on shady slopes, in the western regions above approximately 2200 m, in the other regions of Switzerland above approximately 2400 m. Weak layers in the old snow are now blanketed over by layers of fresh snow and freshly generated snowdrifts, making the avalanche prone locations difficult to recognize. Medium-sized avalanches can be triggered even by one single person; and in the western and the northern Lower Valais large-sized avalanches can be triggered in isolated cases. A defensive route selection is called for.
Particularly on Sunday on sunny slopes, wet slides are possible. The danger of being swept along and forced to take a fall is the major danger: caution is urged in exposed terrain.
Remaining regions of Switzerland
Isolated avalanche prone locations for dry-snow avalanches are located particularly in extremely steep terrain at elevated altitudes. Avalanches are predominantly small-sized, but can sweep along persons and force them to take a fall.
On Sunday in particular, and on sunny slopes, isolated wet-snow slides are possible. The risks of being swept along and forced to take a fall are the focal point of danger: caution is urged in exposed terrain.
Snow and weather
Snowpack
There is still only a small amount of snow on the ground at the current time. In the furthermost western regions, some backcountry tours can be undertaken with skis, in the other regions there is still too little snow in general. The snowpack is characterized by numerous shallow layers, and on north-facing slopes in particular, above approximately 2400 m, there are layers of metamorphosed (faceted) crystals evident over widespread areas. In addition, the snowpack shows heavy influence from winds. Crests and broad ridges are nearly bare of snow. In gullies and bowls, on the other hand, there is lots of snow in some places and the roughness of the ground has been smoothed out by the snow cover.
Weather review to Wednesday, 23 November
Since Wednesday afternoon above 1200 m in the Valais, on the northern flank of the Alps and in the northern regions of Grisons, there has been 10 to 20 cm of fresh snow registered. The fresh fallen snow was transported by moderate to strong-velocity westerly to northwesterly winds particularly at elevated altitudes. In the southern regions it was predominantly dry and sunny in many places.
Weather outlook through Monday, 28 November
Between Friday afternoon and Saturday afternoon in the western and the northern regions, approximately 5 to 15 cm of fresh snow is expected to fall above approximately 1500 m. On Saturday it will become sunnier from the west. On Sunday it will be predominantly sunny and dry in all regions. On Monday, skies will frequently be overcast but hardly any significant precipitation is anticipated. On Sunday it will be very mild temporarily, with the zero-degree level over 2500 m. Until Saturday the wind will be blowing intermittently at strong velocity from northerly directions, on Sunday mostly at light strength, on Monday intermittently at moderate velocity from southerly directions.
Outlook
In the northern regions skies will tend to be gray and gloomy and intermittently a small amount of snowfall is anticipated above approximately 1000 to 1500 m. In the southern regions it will be sunny in some places. The avalanche danger is expected to incrementally decrease, particularly on shady slopes at high altitudes, however only gradually.

Keep informed about the publication of unannounced Avalanche Bulletins. Activate in the App WhiteRisk the "Push Summer Bulletin".
 

Your observations can improve the quality of the avalanche bulletin. We are very grateful for any reports and photos received.

Please report your observations of avalanches or alarm signs, or your estimation of the avalanche danger, or simply send us a picture illustrating the current situation. Your report from the field will be considered along with all the other information when we assess the avalanche danger. It is impossible, however, to reflect the exact content of each individual report in the avalanche bulletin.

The best way to file a report is by completing the interactive form on this page. If your report is to be used in the 5 pm avalanche bulletin, it should be submitted before 2:30 pm if possible. Reports received later will normally be given consideration in the next assessment.

Other reporting options:

Avalanche danger
Lower Valais, central Valais, northern Alpine Ridge, northern Grisons and northern Lower Engadine
Avalanche prone locations for dry-snow slab avalanches are to be found particularly on shady slopes, in the western regions above approximately 2200 m, in the other regions of Switzerland above approximately 2400 m. Weak layers in the old snow are now blanketed over by layers of fresh snow and freshly generated snowdrifts, making the avalanche prone locations difficult to recognize. Medium-sized avalanches can be triggered even by one single person; and in the western and the northern Lower Valais large-sized avalanches can be triggered in isolated cases. A defensive route selection is called for.
Particularly on Sunday on sunny slopes, wet slides are possible. The danger of being swept along and forced to take a fall is the major danger: caution is urged in exposed terrain.
Remaining regions of Switzerland
Isolated avalanche prone locations for dry-snow avalanches are located particularly in extremely steep terrain at elevated altitudes. Avalanches are predominantly small-sized, but can sweep along persons and force them to take a fall.
On Sunday in particular, and on sunny slopes, isolated wet-snow slides are possible. The risks of being swept along and forced to take a fall are the focal point of danger: caution is urged in exposed terrain.
Snow and weather
Snowpack
There is still only a small amount of snow on the ground at the current time. In the furthermost western regions, some backcountry tours can be undertaken with skis, in the other regions there is still too little snow in general. The snowpack is characterized by numerous shallow layers, and on north-facing slopes in particular, above approximately 2400 m, there are layers of metamorphosed (faceted) crystals evident over widespread areas. In addition, the snowpack shows heavy influence from winds. Crests and broad ridges are nearly bare of snow. In gullies and bowls, on the other hand, there is lots of snow in some places and the roughness of the ground has been smoothed out by the snow cover.
Weather review to Wednesday, 23 November
Since Wednesday afternoon above 1200 m in the Valais, on the northern flank of the Alps and in the northern regions of Grisons, there has been 10 to 20 cm of fresh snow registered. The fresh fallen snow was transported by moderate to strong-velocity westerly to northwesterly winds particularly at elevated altitudes. In the southern regions it was predominantly dry and sunny in many places.
Weather outlook through Monday, 28 November
Between Friday afternoon and Saturday afternoon in the western and the northern regions, approximately 5 to 15 cm of fresh snow is expected to fall above approximately 1500 m. On Saturday it will become sunnier from the west. On Sunday it will be predominantly sunny and dry in all regions. On Monday, skies will frequently be overcast but hardly any significant precipitation is anticipated. On Sunday it will be very mild temporarily, with the zero-degree level over 2500 m. Until Saturday the wind will be blowing intermittently at strong velocity from northerly directions, on Sunday mostly at light strength, on Monday intermittently at moderate velocity from southerly directions.
Outlook
In the northern regions skies will tend to be gray and gloomy and intermittently a small amount of snowfall is anticipated above approximately 1000 to 1500 m. In the southern regions it will be sunny in some places. The avalanche danger is expected to incrementally decrease, particularly on shady slopes at high altitudes, however only gradually.

Keep informed about the publication of unannounced Avalanche Bulletins. Activate in the App WhiteRisk the "Push Summer Bulletin".

Latest avalanche bulletins

 

Have you observed alarm signs or an avalanche?

Your observations can improve the quality of the avalanche bulletin. We are very grateful for any reports and photos received.

 

More information about observations

Please report your observations of avalanches or alarm signs, or your estimation of the avalanche danger, or simply send us a picture illustrating the current situation. Your report from the field will be considered along with all the other information when we assess the avalanche danger. It is impossible, however, to reflect the exact content of each individual report in the avalanche bulletin.

The best way to file a report is by completing the interactive form on this page. If your report is to be used in the 5 pm avalanche bulletin, it should be submitted before 2:30 pm if possible. Reports received later will normally be given consideration in the next assessment.

Other reporting options:

 

No avalanche bulletin is published currently. Nevertheless, you should still stay up to date with the avalanche situation in the mountains, especially if there is fresh snow.

However, the SLF will, by way of exception, also issue avalanche bulletins in the summer in case of heavy snowfall. There are different ways you can be notified when these bulletins based on the snow situation are published:

  • by push alert on SLF's free White Risk mobile app: appearing in four languages (English, German, French and Italian), this can be downloaded from iTunes App Store (for iPhones) or Google Play Store (for Android);
  • via an RSS feed which informs you whenever an avalanche bulletin is published.

Depending on the snow and avalanche situation, the regular publication of avalanche bulletins recommences in November/December.

Latest avalanche bulletins

 

Have you observed alarm signs or an avalanche?

Your observations can improve the quality of the avalanche bulletin. We are very grateful for any reports and photos received.

 

More information about observations

Please report your observations of avalanches or alarm signs, or your estimation of the avalanche danger, or simply send us a picture illustrating the current situation. Your report from the field will be considered along with all the other information when we assess the avalanche danger. It is impossible, however, to reflect the exact content of each individual report in the avalanche bulletin.

The best way to file a report is by completing the interactive form on this page. If your report is to be used in the 5 pm avalanche bulletin, it should be submitted before 2:30 pm if possible. Reports received later will normally be given consideration in the next assessment.

Other reporting options:

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Print versions of avalanche bulletin

Print-suitable avalanche bulletins, e.g. for a notice board.

 

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Weekly report

An expert analysis of previous week’s avalanche situation.

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Your observations can improve avalanche bulletin quality. Reports and photos gratefully accepted.

Destructive avalanches and avalanche accidents

Recent and older avalanche accidents incl. statistical analysis.

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