Manto nivoso

Observation: Upper Collins area

Meisenheimer / Morgan / PatSalt Lake
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Quick report

Aspect
North
Elevation
3018 m

The snowpack consists of three layers (storms). The bottom layer in the photo is snow that fell from October 17th through the 19th. We thought that this layer only exists around 9,000' on shady aspects. Below that, it's pretty spotty and melted out. Where we dug at 9,900 feet, this layer is crusted and not faceted.

On top of that layer is our October 30th through November 1st storm, and then over that layer is the most recent overnight snowfall (6.5" with 0.62 H20). The total height of the snowpack here was roughly 43 cm.

We did two extended column tests that were negative (no propagation).

Snowpack

Instability Comment
<p>The northwest wind was moving snow across the most upper-elevation terrain, and I imagine small wind slabs could be found in very exposed areas. Otherwise, the snowpack was right-side up, with rocks and shallow snow being the most significant hazards. Winter has begun. </p>