Reactive Storm Slabs on Mt Strachan

Quick report

SteveSkis123 · Jan 9, 2024 · North Shore

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Quick report

Weather
stormy, windy
Ride Type
convexSlopes, denseTrees, mellowSlopes, openTrees, steepSlopes
Riding Quality
amazing
Snow Conditions
powder, windAffected
Avalanche Conditions
avalancheConditionSlab, avalancheConditionSnow, avalancheConditionSound

Heavy snow and moderate to high SE winds with accumulations of 25cm by 5pm. Multiple SC avalanches failed on buried surface hoar from 12/7. Small loose dry avalanches were easy to trigger on all aspects

Avalanche

Run Length
15
Slab Width
20
Trigger Type
skier
Wind Exposure
crossLoadedSlope
Avalanche Size
1
Slab Thickness
20
Trigger Sub Type
intentional
Start Zone Aspect
S, SE, SW, W
Vegetation Cover
sparseTrees
Start Zone Incline
28
Avalanche Character
looseDry, stormSlab
Number Of Avalanches
6-10
Start Zone Elevation
1400
Runout Zone Elevation
1400
Weak Layer Burial Date
2024-01-08
Avalanche Observation
12hrsAgo
Weak Layer Crystal Type
stormSnow, surfaceHoar
Start Zone Elevation Band
btl, tln
Avalanche Occurrence Datetime
2024-01-09T00:35:00.000Z

Multiple intentional ski cut avalanches up to size 1 the largest being about 20cm crown height with 15-20m wide crown. Ran onto flats of road at T-33. Storm snow on convex features and slopes over 30 degrees became very reactive by about 4/5pm and appeared to fall on buried surface hoar from Saturday night/Sunday morning.