In reply to Andy Say:
reference 'consolidation' - I both agree and disagree with your post.
I agree that conditions would suggest that there has not been the accumulation of snow as forecast to bring the snow gullies into action - a lean scree slope at best. Although some of the classic mixed ridges might be considered in winter condition ? {never mind 'snowed/rimed up rock routes (beyond my ability)} I was hoping for a winter mountaineering route on 'soloable' grade I/ II ground rather than a pitched route.
However, I disagree regarding the rate of consolidation. Snow actually starts consolidating the minute it falls, with a variety of factors at play ( such as the weight of other snow falling on top it, warming with ground contact, wind action and so forth) - the result - conditions can come in very rapidly given the right circumstances and as we all know in Wales disappear even faster.
Martin Morans 'Scotland's winter mountains' has an excellent section on the consolidation process ( but sadly is out of print I believe)