Avalanche Standards
Warning Levels
The avalanche danger is evaluated and communicates it with the five-levelled European avalanche danger scale. The five danger levels are described by three different parameters:
- Probability of avalanche release
- Distribution of hazardous sites
- Size and frequency of expected avalanches
The danger level always applies to a region with an area of >100 km² and not to a specific individual slope. The avalanche danger described always a forecast with uncertainties. It should always be checked on site.
Danger Level 1
Low
Generally favourable avalanche situation
No alarm signs present. Avalanches can only be triggered in isolated cases, in particular on extremely steep slopes.
Recommendations for backcountry recreationists
Travel extremely steep slopes one person at a time and mind the danger of falling.
Danger Level 2
Moderate
Mostly favorable avalanche situation
Alarm signs can occur in isolated cases. Avalanches can be triggered in particular on very steep slopes with the aspect and elevation indicated on avalanche.report. Large natural avalanches are unlikely.
Recommendations for backcountry recreationists
Backcountry activities should be selected carefully, especially on slopes with the aspect and elevation indicated on avalanche.report. Travel very steep slopes one person at a time. Pay attention to unfavourable snowpack structure (persistent weak layers, old snow problem).
Danger Level 3
Considerable
Critical avalanche situation
Whumpf sounds and shooting cracks are typical. Avalanches can easily be triggered, particularly on steep slopes with the aspect and elevation indicated on avalanche.report. Natural avalanches and remote triggering may occur.
Recommendations for backcountry recreationists
The most critical situation for backcountry recreationists. Use terrain effecently and select best possible route and with minimal exposure. Avoid very steep slopes with the aspect and elevation indicated on avalanche.report. Inexperienced persons are advised to remain on open ski runs and trails.
Danger Level 4
High
Very critical avalanche situation
Natural and often very large avalanches are likely. Avalanches can easily be triggered on many steep slopes. Remote triggering is typical. Whumpf sounds and shooting cracks occur frequently.
Recommendations for backcountry recreationists
Stay on moderately steep terrain. Watch out below run out zones of large avalanches. Inexperienced persons should remain on open ski runs and trails. Forecast only on a few days throughout the winter.
Danger Level 5
Very High
Extraordinary avalanche situation
Numerous very large and extreme natural avalanches can be expected. These can reach roads and settlements in the valley.
Recommendations for backcountry recreationists
You are advised not to engage in winter sports beyond open ski runs and trails.
Quoted danger scale by: EAWS-European Avalanche Warning Service | EURegio Tirol Südtirol Trentin(17.03.2020)
