Below Round the World Bowl
Mores Creek Summit
Date and time of observation:
Mon, 01/18/2016 - 12:00
United States43° 56' 50.6832" N, 115° 40' 28.632" W
Whumphing noises, shooting cracks, or collapsing
Recent loading by new snow, wind, or rain
Pit at marked location (SE aspect) as well as slightly higher on the ridge (E aspect) in an area with higher likelihood of wind loading. In both case a very thick weak layer existed about 25 centimeters below the snow surface. Weak layer was greater than 15 cm thick. Pack above this weak layer consisted of the most recent new snow (8-10cm) and a soft slab (15cm thick). A compression test failed the weak layer (with no slip) in one of the pits (E, 30 degrees) on isolation, and CT6, but no slip in the lower pit (SE, 28 degrees). On the east aspect an ECT12 with no propation was seen. Pulling the failed column and extended column resulted in a Q2 shear. There are other layers lower in the snowpack (60cm and 1m), but these layers were non reactive.