The bulletins and forecasts are published according to international standards.

Danger level 4 - Very high

Snowpack stability

The snowpack is poorly bonded on most steep slopes.

Avalanche trigger probalility

Triggering is likely even from low additional loads** on many steep slopes. In some cases, numerous large-sized and often very large-sized natural avalanches can be expeted.

Danger level 3 - Considerable

Snowpack stability

The snowpack is poorly bonded on many steep slopes.*

Avalanche triggering probability

Triggering is possible, even from low additional loads**, particularly on the indicated steep slopes*.

In some cases large-sized, in isolated cases very large-sized natural avalanches are possible

Danger level 2 - Moderate

Snowpack stability

The snowpack is only moderately well bonded on some steep slopes*, otherwise well bonded in general.

Avalanche trigger probalility

Triggering is possible primarily from high additional loads**, particularly on the indicated steep slopes*.

Very large-sized natural avalanches are unlikely.

Danger level 1 - Low

Snowpack stability

The snowpack is well bonded and stable in general.

Avalanche trigger probalility

Triggering is generally possible only from high additional loads** in isolated areas of very steep, extreme terrain.

Only sluffs and small-sized natural avalanches are possible.

Not given

Snowpack stability

Not given.

Avalanche trigger probalility

Not given

Danger level 5 - Very High

Snowpack stability

The snowpack is poorly bonded and largely unstable in general.

Avalanche trigger probalility

Numerous very large-sized and often extremely large-sized natural avalanches can be expected, even in moderately steep terrain.

* The avalanche-prone locations are described in greater detail in the avalanche bulletin (altitude, slope aspect, type of terrain)

• moderately steep terrain: slopes shallower than 30 degrees

• steep slope: slopes steeper than 30 degrees

• very steep, extreme terrain: adverse slope angle (more than 40 degrees), terrain profile, proximity to ridge, smoothness of underlying ground surface

** additional loads:

• low: individual skier / snowboarder, riding softly, not falling; snowshoer; group with good spacing (minimum 10m) keeping distances

• high: two or more skiers / snowboarders etc. without good spacing (or without intervals); snowmachine; explosives; single hiker/climber

Source: www.avalanches.org