Large Collapses in YNP, S. Gallatin

From obs: "Today in the southern gallatin we found widespread poor structure (surprise) with the bottom 30 cm of the snowpack consisting of FC and full on DH. Moderate winds were rapidly drifting the new snow, and anywhere with a new load/slightly stiffer slab was collapsing, with shooting cracks, remote triggers of shallow wind slabs, etc. Some of the collapses ran for over 30m. We were BTL, but I expect that at and above treeline wind slabs were touchy today, with remote triggers possible."