New wind slabs and avalanche activity
By Ryan Matz | MWAC
Date of Observation: February 22, 2019 12:30 PM
Location of Observation: Tuckerman Ravine
Relatively firm (1F-4F hardness) new wind slab on the surface with variable scouring to older surface. These new slabs were over a slightly softer and less cohesive layer, providing a structure conducive to instability, but this new layer was generally stubborn under skis and boots, with minimal cracking or collapsing.
We observed wind eroded avalanche debris below Left Gully and low in Hillman’s Highway, from suspected natural avalanches late yesterday or last night.
All pictured avalanche paths are truly as well developed and connected as they seem. Between this well developed state and the number of wind slab layers formed in the past week, it’s a great time to respect the low probability and high consequence avalanches that our stubborn firm wind slabs can produce.