Observation: Hatcher Pass

Traveled passed the Pinnacle from IM with hopes of accessing Fairangel couliors. Horrible flat light and low snow were just a couple factors that had us change our plan for the day. We experienced variable snow and a small whumpf followed by a larger wumpf that sounded to travel above and below us just below fairangle pk. We believe these were wind slabs? We only experienced cracking around our skis and isolated high energy cracking on corners of the skin track. This caused the top couple inches of crust to breakaway and fill in the corners of the skin track. We then headed over to the other side of the bowl to ski the obvious coulior. We topped out just north west of the cables in cable valley. We wanted a look around so began hiking to the high point. While booting up a very small steeper roll over (probably wind feature), we experienced a large shallow sounding whumpf. This one sounded like a thin layer of ice on a lake dropping. Both incidents, did not result in fractures or moving snow. They both occurred on similar south west-ish aspects.