piled up<\/a>, the group of 15 skiers caught in Tuesday’s avalanche were on the last day of a multiday trip and heading for the trailhead.<\/p>\n\u201cIt was, quite likely, very necessary for them to leave the backcountry so their hazard wasn\u2019t increased further,\u201d said Anthony Pavlantos of Utah-based Prival USA, who makes avalanche safety equipment and runs mountain safety programs.<\/p>\n
\u201cWhat\u2019s really hard to say is like \u2018why were they moving?\u2019 You can\u2019t ever start placing blame on events like this because we can all be there.\u201d<\/p>\n
It\u2019s not uncommon for people to venture into the backcountry to ski or snowboard during times of heightened danger: A dangerous storm also means lots of fresh snow that many skiers crave.<\/p>\n
And because fatal accidents are rare, the risk takers most often survive, said Dale Atkins, who has been involved in mountain rescues and avalanche forecasting and research in Colorado for five decades.<\/p>\n
\u201cIt\u2019s not about not going; it\u2019s about where and when you go,\u201d Atkins said. <\/p>\n
But Atkins added that coming out of the backcountry unscathed can create a false sense of security in a pursuit where luck \u2013 or not enough of it \u2013 also plays a role.<\/p>\n
\u201cIt\u2019s really easy to be fooled by the snow and avalanches,” he said. \u201cWe keep going out even in the worst of storms because that\u2019s what we did last time, and then our luck runs out.\u201d<\/p>\n
Typically the best hope for someone to survive burial in an avalanche is to dig themselves out or be rescued by a companion. That is because slides often occur in remote areas. <\/p>\n
It took rescuers six hours to reach the victims of Tuesday\u2019s avalanche after the first report came in. By comparison, the chances of survival for someone buried for an hour is only about one in 10, Atkins said.<\/p>\n
The surviving skiers in California found three of the victims while they awaited rescue. Authorities haven\u2019t given a detailed account about how they located the other victims.<\/p>\n
A debris field from a major avalanche like the fatal one in California will stretch over a huge area, making it difficult to figure out where someone ends up if they are caught and dragged beneath the surface.<\/p>\n
The first thing to look for is clues such as a glove or ski pole that could reveal a victim’s location, said Anthony Stevens, chief adviser for the search and rescue team in Teton County, Wyoming, home to Grand Teton National Park.<\/p>\n
Skiers in guided groups typically carry transceivers, known as avalanche beacons, that send out signals showing where they are. The devices can also receive other signals, displaying the direction and approximate distance to a victim.<\/p>\n
If that doesn’t work, rescuers can line up and use long, slender poles to probe into the snow in hopes of finding someone, said Ethan Greene, director of the Colorado Avalanche Information Center.<\/p>\n
Time is of the essence throughout a rescue, and once someone is found they have to be dug out. The average depth of burial is roughly a meter, or just over 3 feet, Atkins said. And because snow and ice in an avalanche get heavily compacted, digging out someone from that depth requires moving at least a ton of material, he said.<\/p>\n
Rarely will people survive being buried for long. Atkins said he knew of two people who survived being buried 22 and 24 hours respectively following an avalanche in the 1990s in Washington state. A third member of their party did not survive.<\/p>\n
\u201cIt’s very unusual for a rescue team to find a buried person alive. But it happens, and that gives us hope,\u201d he said.<\/p>\n
____<\/p>\n
Associated Press writer Corey Williams in Detroit contributed to this report. <\/p>\n<\/div>\n
\n
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