Storm Slab Avalanches on Andesite Peak

We made observations in familiar terrain on Andesite Peak today.  Around 10'' of new snow existed in this area from last night through this morning.  We started seeing small shooting cracks in below treeline terrain as we were breaking trail up towards the peak indicating storm slab instability.  Strong to gale force SW winds were transporting snow in near treeline terrain with wind slabs growing in size and larger shooting cracks observed.  We did not see any wind slab avalanches in this area, but also gave most avalanche terrain a wide berth.  We observed a natural storm slab avalanche that release on a convex rollover mid slope just below 7800'.  This avalanche occurred sometime overnight and was mostly covered up by the recent storm snow.  As we moved down through terrain we kicked off a small storm slab avalanche from a ridge that propagated into a gully feature.  Both of these avalanches looked to occur on the new snow/old snow interface at a density change.  After a decrease in wind and snow activity late morning, another wave of this storm started with increased snow and wind into the afternoon.