Friday 05/10/2019 Report PBP

Observation Date/Time:
Fri, May 10, 2019 - 12:25 PM
West side of Three Sisters Between Devils Lake and Mckenzie pass (5/8/19)
The Ride Was:
The Snow Was:
Firm   Wet   Crusty  

Written Report:
I went for a tour on the west side of the Three Sisters between Devils Lake and Mckenzie pass. I did not observe any active avalanche conditions, but saw 3 older slab avalanches. When the Cascade Lakes highway opens I assume more people will head out that way, so I figured I would put up a post.

My observations were in line with expected spring conditions. The snow above tree line, on all aspects, had seen significant freeze thaw, making for easy travel early in the morning and nice skiing midday. Below tree line conditions were highly variable. On North and West aspects, at lower elevations, the snow never setup. Where it had frozen there was an annoying eggshell crust. In general the snow on this side of the Sisters was less sun affected than areas near Broken Top that I have skied this week.

I observed loose wet avalanches above tree line on steep southern aspects. On the Northwest and Northeast side of North Sister I saw three older slab avalanches. All three were on northern facing aspects above tree line, and below cornices. The freshest one was on the west shoulder of Little Brother on its northern aspect. Not sure how old it was, but its run out did not look like it had seen significant freeze thaw, which led me to believe it was triggered within the last week. Pictured below.