Similar to Snowmaggedon. It is the end of the world in the form of snow. Involves massive amounts of snow fall in a period of short time. Usually takes place in areas not accustomed to heavy or frequent snowfall.
I'd love to get out of the house, but this Snowpocalypse has me snowed inside my house!
The Snowpocalypse is coming! It's the end of the world as we snow it!