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

Avalanche defined as a rapid snow mass flow down slopes. Forms when weak layers collapse under slab weight. Four types: slab, loose snow, wet snow, and glide avalanches. Triggers include heavy snow, ...

The winter storm bringing heavy snowfall and whistling winds to the Sierra Nevada peaks is sharply increasing the risk of dangerous avalanches, with the National Weather Service issuing a warning ...