av⋅a⋅lanche

- noun
1. a large mass of snow, ice, etc., detached from a mountain slope and sliding or falling suddenly.
- verb
2. to overwhelm with an extremely large amount of anything.

bliz⋅zard

- noun
1. a heavy and prolonged storm covering a wide area with driving snow, strong winds, and intense cold.
2. an inordinately large amount all at one time.