Two groups met up on the skin track and headed towards a northeast aspect on pt 5463, just north of Josephine Lake. One skier descended without incident. The second skier cut over a convexity on the steep, unsupported slope and triggered the avalanche. The slide released well above the second skier, who was caught, carried, and buried next to a couple of small fir trees. The skier was positioned with their head downslope and their boots sticking out of the snow. It took the party roughly 10 minutes to extract the skier. No injuries were reported other than a bruised leg. The skier lost skis and a pole in the slide but they were recovered, and the group self-evacuated.
The reporting party involved with the avalanche originally posted an obserservation here.
The avalanche ran on a thin weak layer (RG(FCxr) 0.5mm) 78cm below the surface and just above the MLK crust. The bed surface and crown were studded with steep rock outcroppings. The crown depth averaged 80cm and was as shallow as 25cm. The steepest portion of the slope was close to 50 degrees (estimated), while a large portion of the crown was 40-45 degrees (measured).