Hamish MacInnes had this to say
Earlier in the day, I was speaking to someone and I said that this area posed a serious avalanche risk. The wind was very strong and it was breaking the snow into tiny particles, which was falling on the slope and just hanging there. It was very unstable because it couldn’t stick together and compress like normal snow. It was very dangerous. I would not have been out there climbing on a day like that.
but Hamish is pretty conservative. I guess he lives there so only goes out in good conditions.
I looked at the avalanche risk a bit more. Remember it is only an estimate and has to be complemented by observations on the ground. Sais were saying low to moderate with patches of considerable. It is a good way at looking at things, compared to giving a single headline figure. The Savoie avalanche forecaster has used similar terms in the past: risk 2 but risk 4 in north facing couloirs, for example. And of course guide Claude Rey once said “globally conditions are good, locally there is a risk of death”, which sums up the tapistery that makes up the winter snowpack quite well.