We saw 3 natural avalanches, a skier accidental (see incident), and one skier remote ranging from size 1.5 to 2 during our ski day. They all failed on a touchy layer of surface hoar approximately 13 mm long and 45cm deep under a soft slab. All 5 avalanches occured in a in a narrow elevation band around 1250-1300m in an area of sparse trees and alder.