Precipitation is part of the water cycle and allows plants to grow and agriculture to be successful provinding food for humans.
What causes blizzards? Blizzards are usually formed when the jet stream pitches very far south. These storms can start as far south as the Gulf of Mexico or the North Atlantic Ocean.
What is an Avalanche? An avalanche is simply a quick flow of snow down a slope. This happens in a starting zone when the forces on the snow are too heavy for its foundation.