S Facing Instability

Avalanche

blogan7420 · Mar 19, 2022 · Birkenhead

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Observation photo 1

Quick report

Weather
foggy, cloudy, cold, stormy, windy
Ride Type
alpineSlopes, mellowSlopes, convexSlopes, steepSlopes, sunnySlopes, openTrees
Stayed Away
sunnySlopes, convexSlopes
Riding Quality
amazing
Snow Conditions
powder
Avalanche Conditions
avalancheConditionSlab, avalancheConditionSound, avalancheConditionTemp

Spent five days hammering our legs and all the various aspects around the Brian Waddington hut. There is a hard sun crust about 30-40cm down on S facing slopes that storm snow is having trouble bonding to. We set off this size 1 and another 0.5 before switching to almost exclusively N facing terrain; which was cold, dry, unconsolidated snow with minimal slab properties. We found 3-4cm windslab on N facing alpine features near Ridgeline but it didn't produce any results. When sun comes out it is powerful which reinforced our desire to ski in the shade

Avalanche

Run Length
50
Slab Width
25
Trigger Type
skier
Avalanche Size
1
Slab Thickness
25
Trigger Sub Type
accidental
Start Zone Aspect
SE
Vegetation Cover
sparseTrees
Start Zone Incline
40
Avalanche Character
stormSlab
Crust Near Weak Layer
1
Number Of Avalanches
2-5
Avalanche Observation
moreThan48hrsAgo
Start Zone Elevation Band
tln
Avalanche Occurrence Datetime
2022-03-17T11:10:00

See picture. On said date we triggered two small slides on S facing slopes. Storm snow not bonding to sun crust. Hopefully this layer bonds soon