Avalanche on Tallac N Bowl

Caught and carried ~50 ft by an 8in wind slab that released partway down into Tallac N Bowl from the summit. Wind slab was not apparent from above with poor visibility, first few turns were on hard packed wind scoured snow but turn 6 or so triggered the slide and went for a short ride. Was able to arrest on the bed surface above where the debris came to rest (visible in picture). Appeared to propagate ~100-150 ft wide. Rest of party proceeded without incident. No crown profile taken, broke on hard old snow surface. Definitely limited snow assessment prior to dropping by poor visibility, potentially underestimated the chance for a slide as we had just backed away from skiing more advanced terrain.