Local officials say recent snowfalls in the area might have caused the avalanche.
The incident happened after four snowboarders died last month in Tignes in another avalanche near the resort.
Emergency services search for other survivors from a skiing party of nine that was swept away by the avalanche at Tignes ski resort.
Switzerland's Inferno downhill is the biggest amateur ski race in the world. This year it attracted more than 1,800 competitors.
Germany, Austria, Croatia and Switzerland officially reported outbreaks while France says Hungary, Poland, the Netherlands and Denmark are also affected.
Schumacher's former boss and long-time friend Ross Brawn said on Thursday that the former F1 driver is showing "encouraging signs" in his recovery.
Thirty three tourists stranded in cable cars high above the French Alps have been rescued after technicians restarted the ride by relaxing the tension of tangled wires.
The world's longest and deepest rail tunnel has officially opened in Switzerland under the Alps, after nearly 20 years of construction.
Italian Prime Minister Renzi says Austria's plan to stem off the flow of refugees is ‘shameless.'
Germany's lower house of parliament passes package of measures increasing medical checks required for pilots after Germanwings plane crash
European Union expresses deep concern over Austria introducing new border controls
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