Deferegger Alpen Ost · 2 February 2026

Day Risk Profile

Low

below 1800m

Considerable

above 1800m

Avalanche Problems

Above 1800 m

Considerable (3) Dry avalanches · all day

Persistent weak layers Slab 3

N, NE, E, W, NW

above 1800m

Medium Many Poor

GM.1 GM.8

Field notes

Persistent Snowpack layer in which the crystals are poorly bonded and the layer has the potential to fail. Typical crystals in dry weak layers causing avalanches are : precipitation particles; surface hoar; faceted crystals; hollow crystals; graupel. Generally >1mm in size, loose grains with few bonds Wet weak layers can be formed by all snow crystal/grain types.EAWS glossary are very challenging to recognise. Distinctive noise (resembling a “whumpf” sound) occurring when a weak layer beneath a slab collapses. The air of the weak layer is forced outside the snowpack, with the resulting whumpf sound being heard. The sound usually indicates an unstable situation and can be accompanied by surface cracking. A whumpf is a clear avalanche alert.EAWS glossary sounds and shooting cracks are typical when present, but you can have a serious weak layer with no warning signs at the surface. Knowledge of how the Snow deposited on the ground in a multiplicity of layers.EAWS glossary has evolved is essential. SLF's travel advice is direct: travel conservatively, avoid terrain where the consequences of being caught are large, and treat the history of weather and snow as more important than what you can see today. Read the full bulletin.

Source: SLF Avalanche Bulletin Interpretation Guide

Avalanche Activity

A treacherous avalanche situation will prevail. Weakly bonded old snow is to be evaluated critically.

Avalanches can be released in the weakly bonded old snow, even by a single winter sport participant. This applies in particular on west, north and east facing slopes above approximately 1800 m, in isolated cases also on south facing slopes above approximately 2200 m. Mostly avalanches are medium-sized. Remotely triggered avalanches are possible. The Locations delineated by aspect or altitude where avalanches can trigger and people or objects are at risk.EAWS glossary are widespread and are barely recognisable. Individual avalanche prone locations are to be found also in areas close to the tree line. The number and size of avalanche prone locations will increase with altitude. Distinctive noise (resembling a “whumpf” sound) occurring when a weak layer beneath a slab collapses. The air of the weak layer is forced outside the snowpack, with the resulting whumpf sound being heard. The sound usually indicates an unstable situation and can be accompanied by surface cracking. A whumpf is a clear avalanche alert.EAWS glossary sounds and the formation of shooting cracks when stepping on the Snow deposited on the ground in a multiplicity of layers.EAWS glossary serve as an alarm indicating the danger.

Outlook

Constant avalanche danger

3 February 2026

Avalanches can as before be released, even by a single winter sport participant.

Snowpack & Weather

Snowpack

The fresh snow of last week and the extensive wind slabs are lying on top of a weakly bonded Snow layers deposited from earlier precipitation, prior to fresh fallen snow. Old snow layers consist of metamorphosed snow crystals.EAWS glossary. The old snowpack is faceted. Distinct Snowpack layer in which the crystals are poorly bonded and the layer has the potential to fail. Typical crystals in dry weak layers causing avalanches are : precipitation particles; surface hoar; faceted crystals; hollow crystals; graupel. Generally >1mm in size, loose grains with few bonds Wet weak layers can be formed by all snow crystal/grain types.EAWS glossary exist in the Snow deposited on the ground in a multiplicity of layers.EAWS glossary.

Source

ALBINA

Issued

1 Feb 16:00 UTC

Valid until

2 Feb 16:00 UTC

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