Shames inversion

Shames Backcountry below the Dome. 1200m (0C in am, 4C in pm) @ treeline. Light NW winds, no precip, sunny with good visibility. Average snowdepth of 2m. In the morning only top 20cm was moist and many loose wet avalanches were visible from overnight in steep rocky terrain. Snow profile at 1200m on SW aspect with snowpack depth of 170cm, produced compression test hard sudden planar down 65cm in facets on Dec crust. Large pinwheels during the day. In pm, noted results of one natural wet slab in Blueboy, size 2 at approx 1300m, suspect that solar radiation was the trigger.