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You are here: Home / Geography / How Many People Die In Avalanches In the United States and What Causes an Avalanche?

How Many People Die In Avalanches In the United States and What Causes an Avalanche?

March 8, 2020 by Karen Hill

An avalanche is defined as an extremely rapid slide and fall of snow, rocks, and trees.

Between 1985 and 1998 a total of 240 people died in avalanches in the United States.

The most accidents occurred in Colorado, followed by Alaska, Utah, and Montana. Only a few people died within ski area boundaries, most who died were climbers, snowmobilers, or out-of-bounds and backcountry skiers.

Even if a person buried in an avalanche is able to clear snow from around his face to breathe, in about 15 minutes his breath will cause ice to form in that space, something called an ice mask.

Since no air can enter the ice mask, the person will soon die from lack of oxygen, or asphyxiation.

Nearly three fourths of avalanche deaths are due to asphyxiation.

Most avalanches are caused by the avalanche victims themselves or by the people they are with.

Avalanches are most common when the temperature is between 30° and 40° Fahrenheit.

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Filed Under: Geography

About Karen Hill

Karen Hill is a freelance writer, editor, and columnist. Born in New York, her work has appeared in the Examiner, Yahoo News, Buzzfeed, among others.

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