Haslital high · Western Prealps and Bernese Oberland · Switzerland

Grimsel

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Regional avalanche bulletin • Wednesday 21 October

Moderate Grimselpass region

N, NE, E, W, NW

above 2800m

Danger level 2 moderate. Read the bulletin carefully.

SLF · updated 17:00

Read the full Grimselpass bulletin →

Avalanche problems

Dry avalanches · all day

New snow 2=

N, NE, E, W, NW

above 2800m

Over a wide area 20 to 40 cm of snow will fall on Wednesday above approximately 2800 m. As a consequence of a moderate southwesterly wind, sometimes avalanche prone wind slabs will form in particular adjacent to ridgelines and 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 as well as at elevated altitudes. These can in some places be released by people. Avalanches can reach medium size. Backcountry touring calls for careful route selection. The Avalanche Warning Service currently has only a small amount of information that has been collected in the field, so that the avalanche danger should be investigated especially thoroughly in the relevant locality.

Field notes

Easy to spot - the snow is fresh. Look at recent avalanche activity in similar terrain, and pay attention to how much new snow has fallen in the last three days. Critical loading depends on temperature, wind, and what was on the surface before the storm. SLF advises waiting until the Snow deposited on the ground in a multiplicity of layers.EAWS glossary has had time to bond before committing to steep terrain in fresh snow.

Source: SLF Avalanche Bulletin Interpretation Guide