About St. Mary

This page shows the current backcountry snow report, avalanche forecast, and weather conditions for St. Mary. Check the danger rating, field observations, and Doctor's Orders summary above before heading out.

The St. Mary region covers the Purcell Mountains terrain between Kimberley and the upper Kootenay River drainage, centred on the St. Mary River valley and the high terrain of Sullivan Mountain and the McGinty Range. Kimberley Alpine Resort provides the primary lift-accessed entry point into the high alpine terrain of the region. This area is defined by the moderate-elevation ridgelines and bowl terrain of the southern Purcells, where glaciation has largely retreated and the landscape is dominated by subalpine fir and spruce forest transitioning into open, rocky alpine terrain above 2000 metres. Kimberley and Fort Steele provide the primary access points, with forest service road networks penetrating most major drainages through the snow-free season and extending partial access in winter. The snow climate of the St. Mary region is drier than the central and northern Purcells, positioned south of the main Columbia wet belt precipitation axis and more exposed to the continental influence from the east through the Rocky Mountain Trench. Snowpack depths are moderate and the base can be shallow on lower terrain and south-facing aspects, creating significant terrain-feature hazard early in the season. Cold continental air masses from Alberta are a regular influence, promoting faceting and weak layer development in the mid and upper snowpack. The region's lower elevation range compared to northern Purcell regions means that melt-freeze cycles and wet snow consolidation events are possible even in mid-winter during active weather patterns.

Terrain within this zone includes: Kimberley Alpine Resort, Kimberley, Sullivan Mountain, St. Mary River, McGinty Range, Fort Steele.