Kurzbericht

Temptations and Humphreys Cirque

Auf der Karte ansehen
Beobachtungsfoto 1Beobachtungsfoto 2Beobachtungsfoto 3Beobachtungsfoto 4Beobachtungsfoto 5

Quick report

Collapsing
isolated

At treeline in Temptations, we found one small wind slab. It wasn't obvious, but I am glad I noticed it, as I was about to traverse the steepest and lowest portion of the slab. I turned around and accessed the slab's margin from above, where it was thinner, and the slope was much less steep. I did get a small collapse as I stepped onto the slab, but the failure did not propagate across the slab. 

Once we made it to Humpreys ridge at 12,000' between Temptations and Humphreys Cirque, we dug a pit just below the ridge. On the easterly aspect, we found a strong snowpack with ok to poor structure, and any failure planes did not propagate. There was about 55cm of new snow. The most notable failure plane was at the new/old snow interface, which scored an ECTN28. The pit image below shows the failure plane. A second ECT did not produce a failure in this layer. The other two non-propagating failures that we noted occurred at density changes in the new snow. 

We did notice some roller balls on the more southerly slopes at about 130PM today. See the right side of the fourth photo. 

I estimated that about 15 people descended/skiied various northerly, northeasterly, and easterly aspects in the cirque today. 

We found one small wind slab. Was able to get a small collapse (whumpf) at the edge of the windslab, sized approximately 60 feet by 50 feet, on a westerly aspect at treeline. Overall, we determined it was pretty stubborn after poking around its top margins. See the first photo below. No other wind slabs were encountered today.