This means that in a marginal area several kilometres wide, it can be assumed that either the more or the less favourite situation may apply.Those undertaking backcountry ski or snowshoe hiking tours in such areas should therefore consult the avalanche bulletin for both regions in question.For the purposes of the avalanche bulletin, the Swiss Alps are divided in alignment with the warning regions used by the other federal natural hazard agencies (MeteoSwiss, Federal Office for the Environment (FOEN), Swiss Seismological Service (SED)). Here is a quick overview.Avalanche bulletin, snow data and much more. These are set out as far as possible in the avalanche bulletin's danger description.In the case of low avalanche danger (level 1) the snowpack is normally well bonded and stable. Interactive avalanche bulletin, print product or icon map? What is an avalanche bulletin, and who publishes it? However, after long periods of fine weather with shallow snow, another form of snow occurring in mid-winter which makes slab avalanches virtually impossible is the whole snowpack being loose and transformed into faceted crystals. There is a twice weekly bulletin outside of the ski season. For example, the Jungfrau region is usually accessed from the north (northern flank of the Alps or Bernese Oberland), but the backcountry touring area mostly lies in Valais.There are no clearly defined boundaries between two regions with different danger assessments (e.g. Groups consisting of several warning regions are formed, generally by applying climatological or political criteria, yielding overarching region names (see the maps below).Great care is required when interpreting references in the context of backcountry tours in regional border areas. Avoid very steep slopes with the aspect and elevation indicated in the avalanche bulletin. By contrast, transport routes are unaffected or only affected in isolated cases.Wet-snow avalanches are seldom triggered by people, and in the case of gliding avalanches this is virtually impossible. [an error occurred while processing this directive] These can reach roads and settlements in the valley.You are advised not to engage in winter sports beyond open ski runs and trails.Natural and often very large avalanches are likely. This means that in the case of 'low' avalanche danger, usually only small avalanches are triggered in just a few locations and mostly only due to a high additional load, while in the case of 'high' avalanche danger, a lot of avalanches, some of them very large, are triggered or are released naturally (without human influence).However, there are also atypical situations that do not fit into this picture. In the morning edition this is then reduced to the level applying in the morning.In typical springtime conditions, the danger of wet-snow avalanches along with daytime warming and solar radiation will increase significantly as the day progresses. The snowpack is then very weak and there are also weak layers, but the bonded layer on top (the 'slab') is lacking. The danger level is worked out on the basis of a range of variables, in particular the avalanche triggering probability, the prevalence of avalanche prone locations and the avalanche size. However, in reality the avalanche danger changes gradually. Its best-known service is the avalanche bulletin. [an error occurred while processing this directive]In early winter (typically from November to early December) and late spring (typically from late April to May) the avalanche bulletin is only published in the evening. These are detailed in the next section.Also in the case of less typical avalanche situations the danger level is a measure of the order of magnitude of the avalanche danger. In atypical situations deviations from the danger level definition are inevitable. the Gotthard region, the Northern Alpine Ridge and the Iffigen warning region Slab, loose-snow and gliding avalanches: the various avalanche types at a glance The European avalanche danger scale; N.B. In this case, level 2 (moderate) is often used despite the high probability of an avalanche release. after the vehic It is impossible, however, to reflect the exact content of each individual report in the avalanche bulletin. CRITICAL ASPECTS CONDITIONS. Thus, while in the morning dry-snow avalanches are the main danger, in the afternoon the main danger is posed by wet-snow avalanches. Relatively large natural avalanches are not to be expected.Routes should be selected carefully, especially on slopes with the aspect and elevation indicated in the avalanche bulletin.


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