Observation Date: 12/09/2019

Route/Location:
Southern Swan – Pyramid area to 7700′

Weather:
Cloud ceiling at ~7000′ with temps from mid 20s at trailhead to teens in upper elevations.

Wind:
Calm

New Snow: 6-12″

Avalanche Activity:
None observed, but visibility was obscured.

Other Comments:
Widespread collapsing (whumphing) above 6500′. Three pits with three ECTP moderate failures on facets above 11/17 melt-freeze crust.

Observer: Mat Brunton