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Observation type
Snowpack

Observer
Ian bryant 

Keep me anonymous if published
no

Location (general area)
Baden Powell

Latitude

Longitude

Date (yyyymmdd)
20230323

Time
8am-6pm

Road conditions to area

Temperature

Sky
Scattered clouds (3/8 to 4/8)

Wind speed
Light (1-16mph Flags/twigs in motion)

Wind direction
W

Wind direction in degrees

Slope aspect
North

Aspect in degrees

Slope angle

Elevation

Snow depth

Boot/ Ski penetration

Precipitation
None

Activity, recent avalanches
yes

Brief description

Whumphing noises, shooting cracks. collapsing
no

Rapid warming
no

Obvious avalanche path
yes

Terrain trap
yes

Comment
Obvs on BP. March 23, 2033.
Early morning, 8am, while breaking trail on BP we noticed a poor bonding interface with recent snow from the day before. At 6700’ there was 35cm of new snow over a older, heavy and dense 35cm base. Respective bonding between the old base and new snow did not show any instability and was bonding cohesively. Recent precip came right side up, with the last 15cm of fist dense snow sitting on a interface of graupel. Beneath the weak graupel interface was 20cm of four finger, with a gradual transition to 1 finger snow. CTM 12, SCQ1 at 15cm graupel interface. This grapuel interface showed with the same result at another pit dug at 7800’, CTM 12 SCQ1 at 20cm interface, but did not present itself within the snowpack above this elevation

The north face drainage/couloir did have substantial debris from an obvious wet slab avalanche, most likely due to last weeks heavy rain event. R3/D3 with very large swaths of snow that were ripped from canyon walls approx 12’ high and large fields of snow/ice debris that were covered with new snow from day before. I would estimate this slide started at approx 8k and ran the course of the drainage to the bench on highway 2 at 6800’, at a distance of 3/4 of a mile. No other evidence of avalanche or instability was observed. 

Snow depths as we climbed were as follows.. 
6.7k 90cm
7.9k 170cm
8.1k 215cm
8.6k 230cm
9.2k >280cm

Publish this observation
Yes I would like this observation Published

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