Surely, it’s only a bit of snow?
Snow and ice on a roof can exert vertical loads that can cause roofs to deflect or bow downwards.
These extremes in weight can transfer horizontal forces that can cause walls to deflect outwards.
Blocked or damaged rainwater removal systems may prevent water being drained away, resulting in ice dams forming when heavy snow melts. It can refreeze at night and lead to water ingress and damage to the building fabric.