Reactive windslabs on SH

Quick report

bensoneff · Jan 8, 2025 · Duffey

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Quick report

Weather
sunny
Ride Type
sunnySlopes, alpineSlopes, mellowSlopes, openTrees
Stayed Away
convexSlopes, steepSlopes
Riding Quality
ok
Snow Conditions
windAffected, powder
Avalanche Conditions
avalancheConditionSound, avalancheConditionSlab

The wind has been active in the Keith’s hut area the past 2 days creating reactive windslabs primed for human triggering on NE aspect at TL and ALP. I triggered 4 sz 1 avalanches today. 2 being intentional and 2 being accidental. 1 natural sz 1.5 also observed. These slides had surprising propagation and reactivity because they failed on SH up to 8mm. One slide was triggered in 20-25 degree terrain where we had felt very safe. Slides where 20-25cm deep. We covered a fair bit of terrain today skiing the lower slopes of motel 66 and skiing the Vantage Col area.

Avalanche

Run Length
30
Slab Width
20
Trigger Type
skier
Wind Exposure
leeSlope
Avalanche Size
1
Slab Thickness
25
Trigger Sub Type
accidental
Start Zone Aspect
NE
Vegetation Cover
sparseTrees
Start Zone Incline
25
Avalanche Character
windSlab
Number Of Avalanches
2-5
Start Zone Elevation
1940
Runout Zone Elevation
1940
Avalanche Observation
12hrsAgo
Weak Layer Crystal Type
surfaceHoar
Start Zone Elevation Band
alp
Avalanche Occurrence Datetime
2025-01-08T08:00:00.000Z