Obs from Temptations

Post snow pack observations - snowpits, avalanche activity, signs of instability.
ricorides
Posts: 32
Joined: November 24th, 2010, 3:50 pm

Obs from Temptations

Postby ricorides » February 23rd, 2013, 8:23 pm

Toured up to Temptations today, to the middle chute of the area.
Elevation, 11700
Aspect, WSW ~245*
Total depth, 170cm
Wind moderate from SW, some transport.
CT=0. Column failed during isolation, Q1 energy, 15cm down from top. 3 distinct layers were seen in snowpack, each separated by knife hard sun crusts 2.5cm to 5cm thick.
Slab seemed ready to propagate too. Additional tests were scrapped, as the answers seemed pretty obvious.

We tucked tail and boogied away from this area of wind slab.
Discretion is indeed the better part of valor. We could have continued up to ~11900' and shredded delicious snow, however, in the lee sides of chutes and tree islands large wind slabs are ready to move right now.
Good riding was had below 11500'.
No other signs of instability were observed any where else.

Willy
Posts: 47
Joined: October 24th, 2010, 6:27 pm

Re: Obs from Temptations

Postby Willy » February 23rd, 2013, 9:01 pm

Standing down: Sometimes the best line of the day is the one you don't ride. Gracias Rico for solid judgement.

Image

...But we got our shred on down lower.

Image

splitboarder
Posts: 174
Joined: November 9th, 2010, 9:07 pm
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Re: Obs from Temptations

Postby splitboarder » February 24th, 2013, 12:15 pm

glad you found some fun safe turns.
Curious, was there a weak layer? Above or below the highest sun crust? Slope angle?

On Thursday i saw some subtle faceting needles that failed with no propagation on an ECT with Q2 fracture. That thin layer was just under the highest 2-3cm thick sun crust that was 20-30 cm below the surface, on a 26 deg. and south southeast facing slope, above gully 1 and 2. This layer is mentioned in the snowpack summary.
Troy Marino is a splitboarder and on the KPAC board of directors.
KPAC Snow Summary.
Future Guidebook?!

dbski
Posts: 6
Joined: November 13th, 2010, 1:29 pm

Re: Obs from Temptations

Postby dbski » February 24th, 2013, 12:28 pm

SplitBoarder,

Is the old WWII bomber wreck site in Temptations?

After we [nearly] caught up to you at the top of Flying Dutchman on Friday, we continued up to the bomber wreck. Didn't go any higher than the landing gear location. Good powder sitting on top of a breakable crust. No "whumpfs" or fractures noted. We dropped back into the trees and returned to the top of Dutchman. Hit a few rocks on the way down FD.

-db-

Looking down towards the WWII bomber wreck:
Image

Partway down Flying Dutchman:
Image

splitboarder
Posts: 174
Joined: November 9th, 2010, 9:07 pm
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Re: Obs from Temptations

Postby splitboarder » February 24th, 2013, 1:00 pm

I consider that wreck site the upper part of the FD area.
map

dbski
Posts: 6
Joined: November 13th, 2010, 1:29 pm

Re: Obs from Temptations

Postby dbski » February 24th, 2013, 1:18 pm

splitboarder wrote:I consider that wreck site the upper part of the FD area.


Thanks for the clarification and map link.

-db-

ricorides
Posts: 32
Joined: November 24th, 2010, 3:50 pm

Re: Obs from Temptations

Postby ricorides » February 24th, 2013, 5:23 pm

Oh yeah, forgot to mention slope angle; 32*.
Well of course there was a weak layer in there tRoy;)
Let me explain: while I was trying to isolate the column, the top 15cm fell right out, above the highest suncrust layer. That, to me was enough to say I didn't want to ride that slope. As you can see in Willy's picture, the shovel outline on the column, I kept hitting it up to 30. The rest of the column wouldn't budge. But I/we felt that the 15 to 20cm layer that popped out easily was more than enough to bury or sweep a skier off his feet.
I'm guessing there's a very subtle weak layer there, between the storm snow and the later wind deposited snow.

splitboarder
Posts: 174
Joined: November 9th, 2010, 9:07 pm
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Re: Obs from Temptations

Postby splitboarder » February 26th, 2013, 10:30 pm

ricorides wrote:Oh yeah, forgot to mention slope angle; 32*.
Well of course there was a weak layer in there tRoy;)...
I'm guessing there's a very subtle weak layer there, between the storm snow and the later wind deposited snow.


Thanks for the info. and sometimes there is no real identifiable weak layer per se, just poor bonding between two different planer layers of snow....

Stoked for the upcoming "48" hour tour.
Will will need vodka, baileys and good decisions - not in that order.

Mikee Lineville Scholarship party and fundraiser coming up fast - March 9th. Y'all come on out to the Monte Vista hotel for food, music and fun, around dinner time...
Troy Marino is a splitboarder and on the KPAC board of directors.
KPAC Snow Summary.
Future Guidebook?!


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