Keystone Glacier

Natural storm slab activity (Sz 1-2) concentrated on S-SE aspects. Largest avalanche observed was ~600' wide and averaged 60cm crown depth. Located above the Keystone Glacier ~4000ft elevation on a S aspect. Avalanches looked to have run within the past 24 hrs. New snow totals were from 50-80cm with a slightly upside down nature. We stuck to low angle terrain.