Southern San Juan

Snowpack

Mark Allen · Dec 14, 2013 · Southern San Juan

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Weather

cool clear day with variable winds (light to calm) no precip.

Snowpack

2mm FC surface form with two visible striations in the 3D grain. 45cm cohesive slab with a graduated (right side up) resistance F=>P. Upon tilt test this layer presented a hidden layer in the last weekend storm snow. The slab is sitting on 1.5mm FC or 2mm SH depending on location and is reactive to CT and RB test of moderate to hard compression. Below this main slab has another cohesive slab approx 30cm thick with intermittent weak layers with no results to CT or RB. At the ground layer a 15-20cm layer of 2.0mm 3D FC crystals are of 1F-K resistance and results in Sudden Collapse with hard compression in some cases simultaneous to the upper-pack reactive layer. CTM SC @45cm on FC x5 CTM SC @90cm on DH x2 RB 5 Q2 @45cm on FC x1