Plewman avalanche

Kootenay Boundary

goinupthegranby , Wednesday 29th December, 2021 2:05PM

Avalanche

Large slab visible from Highway 3B on N side of Mt Plewman, debris running full path to edge of forest with some smaller broken trees noted. Wind loaded slope including visible cross loading, suspect trigger was wind loading as no evidence of ski tracks into slab but debris ran across recent uptracks. Suspect approx 24hrs old but could be 48 or more. Slab depth estimate 50cm to 120cm, suspect failure was on Dec 4 atmospheric river crust.