Edited sentence: An avalanche can occur upon a sudden thermal or mechanical impact upon snow that has accumulated on a mountain, which causes the snow to rush downhill en masse.Blizzards are forms of severe weather phenomena that occur within winter seasons.Deaths by blizzards are possible, when exposed to extended periods.During snowmelt, acidic precipitation which previously fell into the snow pack is released, which harms marine life.Hypothermia would result in dramatic decreases in body temperature, which might cause uncontrollable actions of shivering, reductions in mental capability, and perhaps decreases in blood circulation rate.Large amounts of snow which accumulate on top of man-made structures can lead to structural failure.Preceding an avalanche is a phenomenon known as an avalanche wind caused by the approaching avalanche itself, which adds to its destructive potential.Situations that occur within blizzards often include high quantities of blowing snow and strong winds.Strong winds can also cause problems in urban environments, where power outrage may occur and pipes become frozen, cutting off fuel sources.The effects of wind chills can result in frostbites and hypothermia.The process of Frostbites can often cause the lost of certain body parts, such as fingers and toes upon limbs.The strong winds being enforced within blizzards are able to create wind chills that would increase the amount of heat presented within your bodies, making temperatures within blizzard feel a lot colder than reality.The winds presented in blizzards is also capable of damaging plants grown in areas of blizzards occurrences.These situations alone can reduce visibility by drastic amounts, making it extremely difficult to see.This situation can result in exposure to extended periods of time within blizzard and increase the chance of being lost.When heavy, wet snow with a snow-water equivalent (SWE) ratio of between 6:1 and 12:1 and a weight in excess of 10 pounds per square foot (~50 kg/m2) piles onto trees or electricity lines, significant damage may occur on a scale usually associated with hurricanes