
Photo from Le Dauphine
The slide occurred at around 10:35 this morning and although rescuers were quickly on the scene, there are four confirmed fatalities and five persons believed still to be missing.
Reports (in French) here :- http://www.ledauphine.com/savoie/2017/02/13/tignes-une-avalanche-en-hors-piste-emporte-plusieurs-skieurs
and (in English on the BBC) :- http://www.bbc.co.uk/news/world-europe-38954628
The avalanche risk level in the area is reported to be at 3 (Considerable), and unconfirmed reports suggest the slide was triggered by skiers above the group hit.