Observation: Public

Observation Details

Observed Avalanches

Signs of Unstable Snow

Observations

We travelled to Boulder Lake then towards Boulder Benchmark, sticking to lower angle terrain and ridgelines on the way up, and returning via a similar path. (2700ft- 6000ft, W to N aspects).

Upper snowpack was wet until 4500ft but transitioned to powder above that (25cm F snow at surface). A pit at 5600ft, NW aspect had 380cm HS with 120cm of storm snow overlying the 12/21 interface. The storm snow was right side up, slowly increasing in hardness down to the P hard 12/21 layer. We found a failure 30cm down CT20 RP, ECTN14, which correlated with results from numerous hand pits as we travelled from 4500ft -6000ft.

Slight wind loading became evident above 5500ft. One of the few slab avalanches we found was a D2 at 6150ft on a NW aspect just below ridgeline. (Probably failed in the last 24 hours). We saw numerous very small loose wet avalanches midday as the skies cleared on upper elevation south aspects and all aspects below 4500ft. A natural loose dry avalanche cycle occurred at the end of last night's storm. Small loose dry avalanches were also reactive to skier triggers on steep slopes today.