Headed up the Y Today planning on attempting the Y-not couloir. Started at around 8:30 expecting conditions to stay cool on the north facing shady aspect that these couloir's inhabit. Booting conditions were fine down low and got progressively more difficult as we continued up the right fork of the Y. As we progressed up the Y the faceted layer became very noticeable at around 7,500ft so I found a safe place to dig a pit. I found a consolidated layer of new snow sitting atop a sun crust and a layer of graupel which the turned to facets underneath. After conducting a standard column and ECT test I determined that the 6" slab sitting atop this weak layer was not propagating and our main concern was watching out for sluff considering how deep we were sinking in while attempting to set a booter. We eventually made it to the top of the right fork of the Y (not sure if this has its own name) and decided that we should ski down what we climbed because it would be quicker and because we we're familiar with the conditions having hiked up it. We topped out at around 1:45 (slow I know). For our entire ascent we had not seen any signs of warming and this was not a major concern as it had been cloudy, windy, and relatively cool. We had great skiing conditions for the first 2/3 of our decent and the snowpack seemed to be relatively solid, yet sluffy. The bottom third, however, we encountered multiple smaller wet slides and witnessed every sign of warming you look out for (roller balls, small natural releases, clumping on our skis, etc.). There were two areas where our boot pack had been fully buried/ cleared out by wet slides. The lowest slide we saw which occurred right at the bottom ran nearly the entire width of the couloir and cleared out our tracks for a few hundred feet. Had we been caught in this slide it would have carried us over a steep section of rocks which would have likely resulted in injury. Looking back we should have kept a closer eye on temperatures and turned around much earlier considering how difficult booting conditions were. We got lucky that this slid before we were in harms way and not during.