fbpx Tumalo Ob | Central Oregon Avalanche Center (COAC)
Observation Date/Time:
Thu, Jan 14, 2021 - 7:29 AM
Kevin Grove
The Day Was:
The Ride Was:
The Snow Was:
We Rode:
Mellow slopes   Open trees   Convex slopes  

Written Report:
I toured up Tumalo yesterday to check out the snowpack after the recent (1-12) rain event. Conditions were uniform throughout my tour with 2cm of new snow on top of a firm melt-freeze crust(ski pen = 1in(2.5cm), boot pen 14in(36cm)).

The skinning and skiing were (d)icy at times but generally dust on crust. The snow surface above treeline was wind scoured and down to the MF crust in many places. I dug into the 210cm snowpack on a 25degree, SE aspect at 7200ft. There were two thin crusts in the top 15cm of the pack under the new snow. The remainder of the snow was uniform P-hardness, and saturated with free water throughout. I had no fracture on a compression test (CTN).

The sky was clear and winds were calm to light out of the west. I saw a couple of small cornice failures, most likely during the rain event, low on the SW ridge of Broken Top just above treeline. I didn't observe any other signs of weak layers or avalanche activity.