Inner Basin Dec 19th

Post snow pack observations - snowpits, avalanche activity, signs of instability.
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Joined: November 9th, 2010, 9:07 pm

Inner Basin Dec 19th

Postby splitboarder » December 20th, 2016, 7:55 am

Beautiful day in the IB yesterday.

Looked like there was a maybe a thin avalanche up on NE slopes below Agassiz, but the post storm wind had obliterated much of the evidence. My partners were not convinced. Looked a bit like the natural on NE Agassiz - November 2015.
See pic below.

Overall: With the post-storm cold temperatures, the new wet snow/rain froze and gave the snowpack bit a strength. There is a rain crust (maybe two) in the snowpack now and it will need to be monitored. Crampons and ice axes would be helpful in the alpine.

Near and above treeline: Reports of hard snow/ice could send one on a slide for life. Crampons/Ice axes would be helpful. Many faces are still quite rocky, better coverage in the chutes/couloirs.

Below treeline: Found 2 to 2.5' of snow at 10200', along with a reactive layer and a rain-crust sliding surface. ~ECTN14 (~18cm down)
No propagation but something to dig down and inspect after the next storm. In thinner/wind affected spots, we could easily get some cracking and movement on this layer during our skin up the nose of Soft Core Ridge. ~ 35.334700, -111.659853
Not bad skiing really with carvable soft-snow on top of that rain crust, at least in the 10000' to 10800' zone. Still thin but the new dense snow really helps.

Had my 3rd beacon search practice of the season. Time to move on to deeper burial, multi-bural, and strategic shoveling practice...

Did an avalanche or did wind cause this?

Not bad for 2 to 2.5 feet of snow...
Troy Marino is a splitboarder and on the KPAC board of directors.
KPAC Snow Summary.
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