After skiing a SE wind in your face run in Meadows Football Field, went across the drainage to ski sheltered north facing trees, just skier's right of the Guild. On my up, noticed any slope over 35 degrees had these stress cracks. 8-10" of new snow wanted to move but couldn't quite. Probably happened during high PI rates on Thursday. They had settled out overnight and were non reactive breaking trail up. I did get some manageable sloughing on my ski down through steeper terrain.