Avalanche Canada and Park Canada publish avalanche bulletins daily to provide backcountry users with information on avalanche hazard. Since 2010, Canadian bulletins follow the recently developed conceptual model of avalanche hazard (CMAH), which describes the key components of avalanche hazard and how to combine them into an overall assessment. However, the CMAH does not provide guidance on how hazard assessments relate to danger ratings on the North American Public Avalanche Danger Scale, a crucial tool for avalanche risk communication and a central component of avalanche bulletins.
Different snowpack structures and weather conditions create distinct types of avalanche problems that require different risk mitigation practices. In North America, nine types of avalanche problems have been identified in the recently introduced Conceptual Model of Avalanche Hazard (CMAH). Avalanche Canada and Parks Canada forecasters have identified and assessed avalanche problems according to the CMAH daily since the winter 2009/10. This dataset provides a unique opportunity for examining the nature of avalanche hazard in western Canada.