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Avalanche bulletin through Friday, 3 April 2020

Moderate avalanche danger will be encountered in some regions

Edition: Th. 02.04., 17:00 Next update: Fr. 03.04., 17:00 Validity

Avalanche bulletin through Friday, 3 April 2020

Moderate avalanche danger will be encountered in some regions

Edition Th. 02.04., 17:00 Next update Fr. 03.04., 18:00 Validity

Avalanche bulletin through Friday, 3 April 2020

Moderate avalanche danger will be encountered in some regions

Edition Th. 02.04., 17:00 Next update Fr. 03.04., 17:00 Validity

Avalanche bulletin through Friday, 3 April 2020

Moderate avalanche danger will be encountered in some regions

Edition Th. 02.04., 17:00 Next update Fr. 03.04., 17:00 Validity

  
Level 2, moderate

Old snow, wind slabs

Avalanche prone locations
In particular in west to north to east facing aspects above approximately 2400m.

In particular in west to north to east facing aspects above approximately 2400m.

Danger description

In very isolated cases avalanches can be released in the old snowpack and reach quite a large size. These avalanche prone locations are to be found in particular on wind-protected north facing slopes. Careful route selection is recommended.
In addition the mostly small wind slabs of the last few days are capable of being triggered in some cases. They are to be found in particular adjacent to ridgelines.
The Avalanche Warning Service currently has only a small amount of information that has been collected in the field.

Wet avalanches as day progresses

In particular on east, south and west facing slopes individual wet and gliding avalanches are possible.

Remarks

Covid-19: The avalanche bulletin continues to be published, primarily to support the safety services. Please follow the instructions of the federal government: https://bag-coronavirus.ch/

see also snowpack and weather

Level 1, low

Wind slabs

The small wind slabs of the last few days are in some cases still prone to triggering at elevated altitudes. They are to be found in particular adjacent to ridgelines. Restraint should be exercised because avalanches can sweep people along and give rise to falls.
The Avalanche Warning Service currently has only a small amount of information that has been collected in the field.

Wet avalanches as day progresses

In particular on east, south and west facing slopes individual wet and gliding avalanches are possible.

Remarks

Covid-19: The avalanche bulletin continues to be published, primarily to support the safety services. Please follow the instructions of the federal government: https://bag-coronavirus.ch/

see also snowpack and weather

Level 2, moderate

Wind slabs

Avalanche prone locations
In particular in west to north to east facing aspects above approximately 2400m.

In particular in west to north to east facing aspects above approximately 2400m.

Danger description

The wind slabs of the last few days are in some cases still prone to triggering. Avalanches can reach medium size. Careful route selection is recommended.
The Avalanche Warning Service currently has only a small amount of information that has been collected in the field.

Wet avalanches as day progresses

In particular on east, south and west facing slopes individual wet and gliding avalanches are possible.

Remarks

Covid-19: The avalanche bulletin continues to be published, primarily to support the safety services. Please follow the instructions of the federal government: https://bag-coronavirus.ch/

see also snowpack and weather

Level 1, low

No distinct avalanche problem

Individual gliding avalanches are possible. Dry avalanches are unlikely to occcur.

Remarks

Covid-19: The avalanche bulletin continues to be published, primarily to support the safety services. Please follow the instructions of the federal government: https://bag-coronavirus.ch/

see also snowpack and weather

Moderate avalanche danger will be encountered in some regions
Edition: 2.4.2020, 17:00 / Next update: 3.4.2020, 18:00
Snowpack
On very steep north-facing slopes above approximately 2200 m, the snowpack surface is still loosely-packed in some places, in other places it tends to generally moisten during the course of the day. During nights of predominantly clear skies, the moist snowpack freezes and forms a crust capable of bearing loads which then during the course of the day incrementally softens up.
Surface-near layers of snow are still prone to triggering, particularly on very steep north-facing slopes in the southern regions.
More deeply embedded inside the snowpack, particularly in the inneralpine regions of the Valais and Grisons, especially on north-facing, wind-protected and shallow-snow slopes above approximately 2600 m, there are weak layers evident from place to place. Isolated stability tests have fractured in precisely these layers.
Observed weather on Thursday, 02.04.2020
Following a night of clear skies it was predominantly sunny. During the course of the day in the northern regions there was a certain amount of convective cloud build-up.
Fresh snow
-
Temperature
At midday at 2000 m, between +1 °C in the western regions and -2 °C in the eastern and southern regions.
Wind
Winds were predominantly light from westerly directions.
Weather forecast through Friday, 03.04.2020
Nocturnal skies in the northern and eastern regions will be partly overcast, in the southern regions skies will be clear. During the daytime in the northern regions it will be quite sunny, with convective cloud build-up during the course of the day. In the southern regions it will be sunny.
Fresh snow
-
Temperature
At midday at 2000 m, between -3 °C in the northern regions and -1 °C in the southern regions.
Wind
  • Winds are expected to be predominantly light from westerly to northerly directions;
  • in high alpine regions, intermittently moderate northerly winds are anticipated.
Outlook through Sunday, 05.04.2020
Nighttime skies in eastern regions will be partly overcast on Friday night, in the other regions of Switzerland skies will be clear. During the daytime on Saturday it will be generally sunny. On Sunday it will be sunny and milder. The zero-degree level will ascend to nearly 3000 m.
The danger of dry-snow avalanches will decrease. The danger of wet-snow avalanches will increase somewhat during the course of the day on Saturday as a result of solar radiation. On Sunday the increase will be more rapid and more intense as a result of the higher temperatures.
 

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:

Moderate avalanche danger will be encountered in some regions
Edition: 2.4.2020, 17:00 / Next update: 3.4.2020, 18:00
Snowpack
On very steep north-facing slopes above approximately 2200 m, the snowpack surface is still loosely-packed in some places, in other places it tends to generally moisten during the course of the day. During nights of predominantly clear skies, the moist snowpack freezes and forms a crust capable of bearing loads which then during the course of the day incrementally softens up.
Surface-near layers of snow are still prone to triggering, particularly on very steep north-facing slopes in the southern regions.
More deeply embedded inside the snowpack, particularly in the inneralpine regions of the Valais and Grisons, especially on north-facing, wind-protected and shallow-snow slopes above approximately 2600 m, there are weak layers evident from place to place. Isolated stability tests have fractured in precisely these layers.
Observed weather on Thursday, 02.04.2020
Following a night of clear skies it was predominantly sunny. During the course of the day in the northern regions there was a certain amount of convective cloud build-up.
Fresh snow
-
Temperature
At midday at 2000 m, between +1 °C in the western regions and -2 °C in the eastern and southern regions.
Wind
Winds were predominantly light from westerly directions.
Weather forecast through Friday, 03.04.2020
Nocturnal skies in the northern and eastern regions will be partly overcast, in the southern regions skies will be clear. During the daytime in the northern regions it will be quite sunny, with convective cloud build-up during the course of the day. In the southern regions it will be sunny.
Fresh snow
-
Temperature
At midday at 2000 m, between -3 °C in the northern regions and -1 °C in the southern regions.
Wind
  • Winds are expected to be predominantly light from westerly to northerly directions;
  • in high alpine regions, intermittently moderate northerly winds are anticipated.
Outlook through Sunday, 05.04.2020
Nighttime skies in eastern regions will be partly overcast on Friday night, in the other regions of Switzerland skies will be clear. During the daytime on Saturday it will be generally sunny. On Sunday it will be sunny and milder. The zero-degree level will ascend to nearly 3000 m.
The danger of dry-snow avalanches will decrease. The danger of wet-snow avalanches will increase somewhat during the course of the day on Saturday as a result of solar radiation. On Sunday the increase will be more rapid and more intense as a result of the higher temperatures.

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.

interactive Button 'submit your observation'

 

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 bulletins are being published at the moment. 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);
  • by mobile text message (SMS): please send an SMS with the message START SLF SOMMER to the phone number 9234 – you can cancel this service at any time by sending an SMS with the message STOP SLF SOMMER; cost: CHF 0.20 per SMS;
  • 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 bulletin 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.

interactive Button 'submit your observation'

 

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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Further information

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

 

Measured values

A bevy of data retrievable any time, filtered by station altitude.

Weekly report

An expert analysis of previous week’s avalanche situation.

Submit observation

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.

White Risk

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