Météo-France has issued the following avalanche warning for tomorrow, Saturday 29th November 2025:
Conditions conducive to triggered avalanches coinciding with very good snow cover at the start of winter This Saturday 29 November, caution is advised when engaging in mountain activities outside of marked and open slopes. The avalanche risk is significant (level 3) this Saturday at altitudes above approximately 2,000 metres in most Alpine mountain ranges. The inner Alps are particularly affected, notably Mont Blanc, Chablais, Aravis, Beaufortain, Vanoise, Haute-Tarentaise, Haute-Maurienne, Maurienne, Belledonne, Grandes-Rousses, Oisans, Thabor, Pelvoux and Champsaur. Heavy snowfall at the beginning of the week has created winter conditions in the mountains, and the snowpack is persistently unstable at high altitudes. In recent days, avalanches and other signs of instability have been observed. Conditions are particularly favourable for avalanches in less frequented areas. A single winter sports enthusiast can trigger an avalanche. Specific conditions for each mountain range, such as descriptions of the most dangerous areas, are provided in our Avalanche Risk Assessment Bulletins (BERA).
The forecasters have been on the ground a lot at the start of this season. At la Plagne they noted: In the 60 cm of fresh snow, there is instability close to the surface (10 cm), the rest is fairly homogeneous. However, at the bottom of the loose snow, last week's very cold snowfall (which lies on ice), initially not very cohesive, has lost even more cohesion and evolved into facets. This is where the main danger lies, but it is not very reactive, which suggests a moderate risk in this location, but this is not necessarily the case everywhere. On our route, we felt quite a few deep ‘woofs’ corresponding to this instability, but nothing moved because we avoided the large steep slopes