Mt. Saskatchewan Valley

Avalanche initiated immediately below the peak of 52.13961 N, -117.13123 W. What appears to be a slab running on an old snow surface sympathetically triggered a second avalanche which ran to ground. The debris ran quite far into very low angle terrain. Propagation on the sympathetic avalanche was impressive, with at least a 250 m crown, and the crowns of both avalanches were quite deep (estimated at 200 cm each). Avalanche debris was observed from about 1 km, making all measurements shown estimates. Three photos attached showing the start zones, track, and runout.

CTE8SC down 97 on DH CTM12SC down 97 on DH Surface form in sun-sheltered areas consisted of Surface Hoar of varying size (2 mm predominantly, larger near creek bottoms). In sun-exposed areas, the surface form was a melt-freeze crystal currently at its melting point.