A warm storm moving through British Columbia this weekend is heightening avalanche risks during a period known for being the deadliest for avalanches in Canada. Environment and Climate Change Canada predicts the system will result in precipitation, strong winds, and rising freezing levels across most of the province, leading to increased snowfall at higher elevations. Avalanche danger is set to peak on Saturday in certain areas, such as the North Shore Mountains, as freezing levels are projected to exceed 1,500 to 1,800 meters.
The potential impact of the storm includes rain falling on existing snow in various mountain regions, a combination that experts warn could elevate avalanche risk. The additional snow or rain can add pressure on existing layers, making them more prone to collapsing or sliding, according to Karina Bakker, a forecaster with Avalanche Canada.
The current risk is attributed to “persistent slab” conditions, where a layer of snow rests above weaker snow buried deeper in the snowpack. This setup can lead to slab avalanches when the weaker layer gives way under the weight above, triggering a slide down the slope. The presence of deeper weak layers makes these avalanches harder to predict since typical warning signs may not manifest.
March historically records the highest number of avalanche fatalities in Canada, with 69 deaths in the past two decades during this month. Bakker explains that the evolving snowpack complexity over the winter months contributes to the heightened risk in March, as multiple layers build up due to varying weather conditions.
Since December 2025, five avalanche-related deaths have occurred in British Columbia, highlighting the seriousness of the current situation. Avalanche Canada advises individuals venturing into the backcountry to stay informed through daily forecasts and opt for conservative terrain choices. Practicing patience and adhering to terrain guidelines based on avalanche danger ratings can significantly reduce the risk of accidents in these hazardous conditions.
