Blizzards are severe storm made by extreme coldness, powerful winds, and heavy snowfall. They are most common in the western part of the United States but sometimes other places in the country.The great blizzard of March 11-14, 1888, which covered the eastern U.S., was perhaps the most paralyzing of any storm on record.
An avalanche is a huge amount of snow that falls down a mountain. No one knows really how often avalanches happen. Scientists think about 100,000 fall each year in the U.S.! About 1,000,000 avalanches happen throughout the whole entire world!! Avalanches fall where ever there are snow covered mountains or hills.
Most avalanches in the U.S. and Canada happen in the western mountains.