CAIC: Colorado Avalanche Information Center BC Zone Observation Report

Monday, March 28, 2016 at 12:00 AM





  • Snowpack Obsvervation #1
    • Cracking: None
    • Collapsing: None
    • Persistent Weak Layer: Yes
    • Comments: Interfaces between storms of past 6 weeks still apparent in tests and profiles. But no distinct, well-preserved weak layers. Only facets I saw were small and well on the way to rounding. Tests produce planar shears between layers, and occasional propagation (w hardest force) that isn't consistent from test to test or pit to pit.
  • Snowpack Obsvervation #2
    • Cracking: None
    • Collapsing: None
    • Comments: Surface snow almost always moist; wet near valley bottoms. 1 small (SS-ASu-R1D1-I 25cm) triggered slab that didn't propagate or run more than a few feet. Steep, NE-facing slope. Thin, skiable crusts where shaded long enough to refreeze.


  Date Location/Path # Elev Asp Type Trig SizeR SizeD
View  2016/03/27  †  Maroon Creek   8   TL   W   WL   N   R2   D1.5 
View  2016/03/28  †  Conundrum Creek   1   <TL   NE   SS   AS / u   R1   D1 



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Figure 1: Loose Wet avalanches on a WSW-facing, near-treeline slope. Image 3/28/16; slides likely ran previous day.
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Figure 2: A small slab avalanche that broke on the 3/22 crust/ dust when a skier cut the slope. The slide did not run far but the moist debris would have been hard to escape. 3/28/16.
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Figure 3: Partial profile from NE-facing, near-treeline slope. Interfaces between storm layers of past 6 weeks producing planar shears in snowpack tests, but inconsistent propagation.