The deminsions are for the first glide avalanche I came across in mid elevation Broads Fork, there were multiple glide avalanches in the drainage all located on E facing rock slabs. There were 2 on the mid elevation rock slabs a massive one on the Diving  Board that Peter Donner noted yesterday and two other pockets, one to the S of the Diving Board and one to the N. With three nights of no refreeze, and rain this afternoon the place is becoming unglued. 

Photos; mid elevation glide avalanches in Broads and the Diving Board glide.