Skiers, snowmobilers and hikers can set off an avalanche when a layer of snow collapses and starts to slide down the slope.

Forecasters ranked the danger as 4 on a 5-level scale.

Wet snow avalanches are starting earlier in the season as global temperatures rise. But it turns out, it’s not wise to ...

Avalanches are common in the Sierra. The Tahoe region alone sees as many as 40 reported slides each winter. And according to ...

This week's deadly avalanche north of California's Lake Tahoe involved a group of 15 backcountry skiers and left only six survivors. The slide quickly became the deadliest in state history and the ...

An avalanche — a mass of snow moving down a slope — happens most often in the wilderness. Watching for forecasts, bringing the proper gear and getting training to prepare for them can help with ...

Add Yahoo as a preferred source to see more of our stories on Google. A team of forecasters for the Sierra Avalanche Center provide daily avalanche advisories based on their field observations ...