Chickadee Valley ECT

Snowpack

philipp.a.garber · Dec 17, 2020 · Lake Louise

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Quick report

Weather
cloudy
Ride Type
steepSlopes, openTrees, mellowSlopes
Stayed Away
alpineSlopes
Riding Quality
good
Snow Conditions
powder, deepPowder

Great day exploring the Chickadee Valley. Skied two Boom Mt. south slide paths (from 2150m and 2400m), and a short run on the north aspect right below Mt. Whymper. Dug a pit with confidence-inspiring results. The slide paths #6 and #7 (counting from the highway) off Boom had run in the last 12-48 hours, both to about the top of the Christmas trees in their fans. Perfect weather (cool, not frigid; calm or light winds; slight precip; mostly overcast with good visibility).

Weather

Avg Temp
-8
Wind Speed
windSpeedCalm
Blowing Snow
none
Sky Condition
brokenClouds
Snowfall Rate
1
New Snow24 Hours
4
Storm Snow Amount
44
Temperature Trend
steady
Precipitation Type
snow

Perfect weather for a day in the backcountry.

Snowpack

Depth
135
Obs Type
point
Site Aspect
S
Test Fracture
resistant
Site Elevation
2135
Ski Penetration
15
Foot Penetration
35
Test Failure Depth
5
Site Elevation Band
btl
Surface Conditions
newSnow
Test Failure Layer Crystal Types
stormSnow

We dug a pit beside the obvious boulder near the choke of slide #3 (counting from the highway) on the south side of Boom Mt. The snowpack was quite complex but the test results inspired confidence. Incline: 35 degrees Air temp: -8 (guestimate) Snowpack depth: 135 cm CTH 24 RP 30 cm. The rest of the snowpack was unresponsive to our compression test. When we levered off the remaining column, it broke off on the Biden Layer around 100 cm depth. This 70 cm chunk of column was consolidated and dense - the brewmaster in our group suggested it weighed as much as a bag of malt (45 lbs). When we threw it out of the pit, it actually rolled the whole length of the avi path without breaking apart. The layers: 0-30 -- Storm & old storm snow, no consolidation, straight blower pow. 4F. 30 -- slight (wind?)crust. F. 30-45 -- consolidated snow. F. 45 -- second, slight (wind?)crust. F. 45-75 -- consolidated slab. F. 75-135 -- mixture of ice and facets. Very dense. The snow saw was putting in work, don't even bother bringing your rutschblock cord to this party. 10cm ice layer around 115 but that depth varied across the pit. 115 is where the column eventually popped. P: 75-115, F: 115-135/ground.