It generally takes just two ingredients to create dangerous conditions: A slope of 30 degrees or more and layers upon layers ...

What triggered the avalanche last month near Lake Tahoe that killed nine skiers amid a fierce blizzard may forever remain a ...

As the winter storm pummels the Sierra Nevada, here’s how avalanches can happen and how often they occur across California: ...

Then there needs to be a trigger. A snowpack may be seemingly stable until a snowmobile or skier disturbs it enough that the snow starts to move. Strong winds or rock falls may also cause an avalanche ...

Add Yahoo as a preferred source to see more of our stories on Google. The behavior of an avalanche depends on the structure of the snowpack, but that’s only one ingredient. An avalanche requires all ...

We use a technique called photoelasticity and create thin avalanches to reveal what’s going on inside the avalanche. We track ...

Heavy snowfall affected roads Tuesday afternoon amid a winter storm warning from the National Weather Service.

After an avalanche in Big Cottonwood Canyon buried two skiers, causing critical and serious injuries, another one hit further up the canyon and caused one injury.

Switzerland issued its most severe avalanche warning on Tuesday after heavy snow caused a train to derail in Valais, injuring ...