what is avalanche
Technically, an avalanche is any amount of snow sliding down a mountainside. It can be compared to a landslide, only with snow instead of earth.he other common avalanche is known as a Full-Depth Avalanche which, as it s name would lead you to believe, occurs when an entire snow cover, from the earth to the surface, slides over the ground. An avalanche can be composed of many different kinds of snow depending on the region, temperature and weather.