Small convexity with sparse vegetation. Skiers 1 and 2 had already skied the adjacent more concave slope without any releases. Skier 3 entered the slope, then stopped as soon as slope fractured at feet and did not get pushed. Slab broke apart quickly and fanned out due to lessening of slope angle. This correlated with a nearby ECTP result in a snow profile and appeared to be at the same storm interface we had been tracking all week.