Tallac Observations

During our tour on Mt. Tallac, we were not able to specifically identify either the January 5th or January 9th buried surface hoar layers in several quick pits dug at various elevations along the Northeast approach ridge (approximately 7,500 ft and 8,800 ft), nor in quick hand pits at other elevations on the aproach.  

In both pits (as well as through informal pole probing through the approach), we were able to identify a noticeable melt-freeze crust (P to K density) approximately 2-2.5ft down in the snowpack with what appeared to be NCF below the crust.  Compression tests did not yield results at that layer (due to the unconhesive snow above), but hand and shovel shears would result in Q1 or Q2 shears.  In each case, the snow above did not carry slab-like characterstics, but something to keep an eye out on for the future.

At all elevations on on N-NE facing terrain, widespread surface hoar (2-3mm in size) was found on the surface of the snow throughout the day (see attached picture).  

In addition, there were very minor (1-3 inch) windslabs at the crest of the North Bowl, only extending 3-5 feet below the crest.  These did not produce any shooting cracks and were ultimately non-reactive when skiing through (other than minor breaking at your skis).

Ultimately, no evidence of instability was encountered throughout the tour, including through the pits, pole probing, hand pits, test slopes and general observations.