Observed from a distance. All sizes and information is estimation and speculation. Observed at 15:00 during a short window of clearing in White Pine. Looks recent, I'd estimate between late yesterday afternoon and early morning during peak instability. No recent/new tracks in the drainage suggests a natural. Smaller slab activity noted high on the slope, that may have been the trigger for the large, and wide obvious avalanche. Scale is difficult to determine the depth, but suspected connected windslab failing on FCsf from last week high pressure or graupel from early in storm. Doesn't appear to have gone into old snow, but not confirmed. See picture below.