A warm storm moving through British Columbia this weekend is heightening avalanche risks during a historically dangerous period for avalanches in Canada. Environment and Climate Change Canada predicts the system will bring precipitation, strong winds, and higher freezing levels across much of the province. Meteorologist Brian Proctor emphasized that this weather pattern will likely lead to increased snowfall at higher elevations over the weekend.
The avalanche jeopardy is anticipated to peak on Saturday in certain areas of the South Coast, including the North Shore Mountains, as freezing levels are projected to rise above 1,500 to 1,800 meters. The forecast suggests that rain falling on existing snow in mountainous regions could elevate the avalanche threat. Forecaster Karina Bakker from Avalanche Canada explained that the combination of new snow or rain on top of existing snow can escalate pressure on those layers, making them more prone to collapse or sliding down slopes.
The present risk is attributed to “persistent slab” conditions, where a layer of snow rests above weaker snow buried deeper in the snowpack. Bakker highlighted that these weaker layers, located between 50 to 150 centimeters deep, can trigger slab avalanches when they collapse under the weight of the snow above them. Unlike other types of avalanches, these deeper weak layers make predictions challenging as typical warning signs may not manifest.
March is historically perilous for avalanches, with the highest number of avalanche fatalities in Canada occurring during this month over the past two decades. Bakker explained that the evolving snowpack complexity during the winter months, with multiple layers building up due to cold spells, storms, and warm periods, increases the risk. Since December 2025, five avalanche-related deaths have occurred in British Columbia, emphasizing the current danger level in the region.
Avalanche Canada advises individuals venturing into the backcountry to monitor daily forecasts and opt for safer terrains. When the avalanche risk is considerable, it is recommended to choose slopes under 30 degrees and to avoid avalanche-prone areas entirely when the danger rating is high.