As night follows day, avalanches follow fresh snow coupled with wind. In the PisteHors avalanche report on Friday it said:
The fresh snow arrived as predicted with heavy chutes today over the Northern Alps and at altitude in the Western Pyrenees. These have been accompanied by some strong winds and the existing snow pack is frequently unstable. Backcountry travellers should take care over the coming days, particularly on Sunday where fresh snowfall is expected.
Yesterday a ski mountainneer was killed at La Clusaz and two skiers seriously injured near Chamrousse. The Clusaz party were not wearing avalanche beacons:
First Fatal Avalanches in French Alps