A series of natural avalanches that occur across a region over a relatively short time span.
An avalanche cycle occurs when many slopes avalanche naturally across a broad scale such as a drainage, region, or range. Avalanche cycles can occur over the course of several hours or several days. They are typically caused by a significant weather event spurring natural avalanche activity, such as heavy snowfall or rain, heavy wind loading, or rapid warming. Avalanche cycles can be widespread across all terrain or occur on specific elevation bands or aspects.