Whymper South paths

Avalanche

snow.safety · Dec 23, 2020 · Lake Louise

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Observation photo 1

Avalanche

Run Length
1300
Slab Width
150
Trigger Type
explosives
Avalanche Size
3
Trigger Sub Type
intentional
Start Zone Aspect
SE
Vegetation Cover
openSlope
Avalanche Character
corniceWithSlab
Number Of Avalanches
1
Start Zone Elevation
2500
Runout Zone Elevation
1800
Avalanche Observation
12hrsAgo
Start Zone Elevation Band
alp
Avalanche Occurrence Datetime
2020-12-23T11:20:00

Avalanche control with explosives on Whymper south. Evidence of previous activity during the storm last 48 hours. We triggered a size 2 and a size 3. Size 3 resulted from dropping a large cornice on the slope below which triggered a slab and ran a long distance. Hard to tell, but it seemed like the slab was recent storm snow and not down to the deeper, persistent layers.