How does an avalanche occur? by Ryan

Avalanches are very dangerous.  It can destroy a whole town.  An avalanche can do billions of dollars of damage.  An avalanche can split open many trees.  The land changes once an avalanche runs over the town.  The quick pile up over loads the under laying snow pack which causes a weak layer beneath the slab to fracture.  The layers are in archive of winter weather.  Drought, rain, and hard freeze, and more snow can can an avalanche.  How the layers bond often determines how easily one will weaken and cause a slide.