Sidina Mountain - previous machine accidental

Quick report

Weather

cloudy, sunny, warm

Ride Type

mellowSlopes, openTrees

Stayed Away

alpineSlopes, steepSlopes

Riding Quality

ok

Snow Conditions

crusty, powder, windAffected

Avalanche Conditions

avalancheConditionSlab

Today we went up to Kispiox. We found a shallow snowpack with an average of 1m at treeline (around 1500m). Below 1200m, the snowpack depth tapers rapidly. On the lee side of a treeline ridge, we found a previous size 1 machine accidental avalanche. To our surprise, a damaged snow-machine was left behind in the debris. The crown was 60cm deep and failed on facets above the early-Dec crust. We dug a crown profile and found facets between 2-3mm in size, down 60cms. The facet layer is nearly 10cm thick, below this we found the early-Dec crust.

Avalanche

Run Length

6

Slab Width

10

Trigger Type

snowmobile

Wind Exposure

leeSlope

Avalanche Size

1

Slab Thickness

60

Trigger Sub Type

accidental

Start Zone Aspect

NE

Vegetation Cover

openSlope

Start Zone Incline

35

Avalanche Character

persistentSlab

Crust Near Weak Layer

1

Number Of Avalanches

1

Start Zone Elevation

1550

Avalanche Observation

24to48hrsAgo

Weak Layer Crystal Type

facets

Start Zone Elevation Band

tln

Avalanche Occurrence Datetime

2025-01-13T20:00:00.000Z