Field Report

Gunnison - CO

2025/03/17
Lat: 38.964, Lon: -106.787
Backcountry Area: Gunnison
Author: Eric Murrow & Ben Pritchett
Organization: Crested Butte Avalanche Center

Report Information

Observation Summary

The snowpack appeared quiet below treeline, but we didn't test or dig on the most northerly features below 11,000 feet.  As we ascended to upper elevation, weak layers at the bottom of the snowpack seem to be the most problematic.  Weak layers also exist in the upper snowpack, but the lack of recent slab formation from lower storm totals has kept these weak layers from acting up.  More snowfall may produce avalanches in the upper snowpack, and a substantial storm in this shallow snowpack area could stir deep, weak layers awake. 

CAIC Notes

Original CBAC ob: https://cbavalanchecenter.org/view-observations/#/view/observations/3401c536-e69e-4fa1-9a74-3543c3f45df6

Area Description

Upper Cement Creek/Crystal Peak

Route Description

Cement Creek TH to Crystal Pass to Upper Taylor Weather station.

Avalanches

Saw an avalanche

One natural Wind Slab on an alpine north slope with active wind loading during the day.

i
Expand to see more details
Date # Elev Asp Type Trig SizeR SizeD Problem Type Location
03/14/2025
1 >TL NW N D2 Wind Slab
03/17/2025
1 >TL N SS N R1 D1 Wind Slab

Snowpack

Cracking: None
Collapsing: Moderate

Below treeline the upper snowpack is often laced with crusts, ice lenses, and ice columns.  On sunnier features, these reached the ground; on east and west aspects, the melt influence from previous warm weather remained in the top half of the snowpack.  Slab avalanche issues appear to exist only on shadiest aspects below treeline.  Recent snowfall is markedly less than in snow-favored areas north and west of Crested Butte.  Snowfall from March is commonly less than a foot deep.
A profile on a north aspect near treeline (wind sheltered) produced a propagating Extended Column Test after taps from the shoulder (hard result) on basal weak layers.  The early March facet layer exists here but is less problematic as it lacks a slab without additional wind loading. (see profile below) 
A test profile on a north slope above treeline did not produce results in an Extended Column Test. Still, it produced Propagation Saw results that suggest triggered avalanches remain a threat if you were to initiate a collapse from a shallow or weak area.  Basal depth hoar remains fist hard beneath a stiff slab.  A few hasty hand pits on east slopes above treeline showed facets resting on a crust beneath the recent snowfall; the slab ingredient appears to be missing but may form in the near future with additional snowfall.

One natural Wind Slab ran on the north side of Crystal Peak in the early afternoon. A collapse occurred on an east-facing knoll above treeline and a low-angled southeast meadow around 11,000 feet.

Weather

Light winds in valley bottoms increased to moderate speeds with a few strong gusts above treeline. cloud cover: overcast; wind loading: moderate; snow avail for transport: small smounts

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