Fourteen hours after it started snowing a team of three people were avalanched from Raeburn's Easy Route or somewhere close by. They called the Lochaber MRT and we went up to help them. They managed to get back to the CIC Hut by themselves despite back and head injuries.
We had about 30cm snow fall in twelve hours and it has come down to 400m above sea level. The avalanche forecast was quite accurate and was very clear about this snow coming in and the hazard it would produce. It gave a considerable avalanche hazard which means human triggered avalanches are likely and this is what happened with the team that got caught in one today. While we were out looking for them another avalanche came down from Number Two Gully which was probably naturally triggered. Natural avalanches are possible in a considerable avalanche hazard.
I think it was Hamish MacInness who said we will be wise to avoid climbing during fresh snow fall and for 24 hours afterwards. Most avalanches occur during snow fall and just afterwards. Even if you just stick to this rule and nothing else you will raise your chance of successful climbing. Better still, learn more about the Be Avalanche Aware process and do some training.