This is usually the case as we seldom get a deep snowpack early on. Conservatively, on slopes between 25 and 55 degrees. More frequently, between 30 and 50 degrees. Where there are not enough trees to anchor the snow pack the snow can slide. Don't underestimate a small area of hanging snow because it's not a huge mountainside.
Many fatalities occur in small slides.
Don't think sparsely treed glades won't slide. It takes a forest to anchor the snowpack. A snowpack over a grassy slope or old summer snow is more likely to let loose than the same over talus. None of this snowpack will be held by these sparse trees. This area on Quandary Pk. frequently slides.