Natural avalanche cycle up to size 3 in the 93N area.

Observed a natural avalanche cycle up to size 3 on the 93N on Wednesday. Most failed in the previous 24 hrs, but one large avalanche at the south end of Bow Lake occurred while driving by Tuesday morning and was triggered by solar sluffing out of steep rocky terrain. Failure planes appeared to be a mix of recent storm slabs, and step downs to the various deep persistent layers in the snowpack.