Alta Val Passiria · 4 April 2026

Day Risk Profile

Low

below 2200m

Moderate

above 2200m

Avalanche Problems

Above 2200 m

Moderate (2) Dry avalanches · all day

Persistent weak layers Slab 2

N, NE, E, W, NW

above 2200m

Medium Few Poor

GM.7

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

Weakly bonded old snow requires caution.

Winter sport participants can release avalanches only in isolated cases. They can be triggered in the Snow layers deposited from earlier precipitation, prior to fresh fallen snow. Old snow layers consist of metamorphosed snow crystals.EAWS glossary and reach medium size. Caution is to be exercised in particular on very steep west, north and east facing slopes above approximately 2200 m, and on south facing slopes in Areas above approximately 3000 m (particularly glaciated areas).EAWS glossary. Especially transitions from a shallow to a deep Snow deposited on the ground in a multiplicity of layers.EAWS glossary are unfavourable. Locations delineated by aspect or altitude where avalanches can trigger and people or objects are at risk.EAWS glossary are to be found in particular in Usually a steep, elongated, eroded trench; typically prone to snowdrift accumulation.EAWS glossary and Rounded or elongated concavity; typically tending to accumulate snowdrift.EAWS glossary, and behind abrupt changes in the terrain. In addition small and medium-sized loose snow avalanches are possible, in the event of prolonged bright spells especially on extremely steep slopes.

Outlook

Constant avalanche danger

5 April 2026

Weakly bonded old snow requires caution. The high temperatures will give rise to increasing moistening of the snowpack.

Snowpack & Weather

Snowpack

The gusty wind has transported the fresh and old snow significantly. Hard wind slabs formed. These 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 in particular on west, north and east facing slopes above approximately 2200 m. The Snow deposited on the ground in a multiplicity of layers.EAWS glossary will be subject to considerable local variations. In steep terrain there is a danger of falling on the hard snow surface. The weather conditions will give rise to moistening of the snowpack. In particular on steep sunny slopes at low and intermediate altitudes hardly any snow is lying.

Source

ALBINA

Issued

3 Apr 15:21 UTC

Valid until

4 Apr 15:00 UTC

Next update

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Schedule

Off-schedule