Avalanche danger bulletin of Principat d'Andorra

< / tr>

Hazard Index	Snow Cover Stability	Trigger probability	Off-piste skiing directions and recommendations
5 Very strong	The mantle is poorly consolidated and very unstable in general.	Numerous very large and even extremely very large avalanches are expected to fall spontaneously, even on slightly sloping terrain *.	Excursions and presence in the mountains must be abandoned. < / td>
4 Strong	The snow cover is weakly stabilized on most sloping slopes *. < / td>	Avalanche triggering is likely even due to weak overload ** on numerous sloping slopes *. Sometimes spontaneous falls from numerous large and often very large avalanches can be expected.	Excursions limited to areas with a moderate slope and without being exposed to avalanches that are triggered from upper parts.
3 Marcat	The snow cover is between moderately to weakly stabilized on numerous sloping slopes *.	Avalanche triggering is possible even due to weak overload ** especially in the terrain * indicated in the bulletin . In some situations it is possible to fall spontaneously from some large avalanches and in isolation from very large ones.	Sloping slopes at altitudes and orientations indicated in the BPA should be avoided. It requires a lot of experience and a good ability to appreciate the danger of avalanches. It is essential to choose the terrain according to the conditions.
2 Moderate	The snow cover is moderately stabilized on some sloping slopes *; in the rest it is well stabilized.	The triggering of avalanches mainly by strong overload ** on sloping terrain *, usually described in the bulletin. Spontaneous avalanches of very large size are not expected.	Careful planning of excursions is required. Caution is advised in the selection of the route, especially it is necessary to avoid inclined slopes with the indicated orientation and altitude.
1 Weak	The snow cover is generally well stabilized.	In general, triggers are only possible in isolation due to strong overload ** on very sloping terrain *. Only small and medium avalanches are possible spontaneously.	Excursions and downhill skiing are possible almost without restrictions, although BPA recommendations must be followed.

(*) Avalanche-prone terrain is described in more detail in the Avalanche Hazard Bulletin (altitude, slope orientation, terrain type):
- Moderately sloping slope: slopes less than 30º
- Inclined slopes: slopes greater than about 30º
- Very steep slope and extreme slope: especially adverse terrain related to the slope angle (greater than approximately 40º ), terrain profile, ridge proximity, underlying ground with little roughness.

(**) Additional overload:
- Weak: individual skier / surfer, smooth circulation, without falling, respecting safety distances (minimum 10 meters)
- Strong: two or more skiers / surfers without l 'security space (or no intervals); motor vehicles; explosives

Spontaneous: No human influence