Machine Accidental

Quick report

Weather

sunny

Riding Quality

ok

Snow Conditions

heavy

Avalanche Conditions

avalancheConditionSlab

Observations from SAR members attending incident site after subject evacuation. Crown depth was 40-60cm deep and likely failed on the January 30th interface. Very touchy conditions persist in this drainage. One full burial, excavated by other member in party.

Weather

Avg Temp

0

Wind Speed

windSpeedCalm

Sky Condition

fewClouds

New Snow24 Hours

0

Temperature Trend

steady

Precipitation Type

none

Snowpack

Obs Type

point

Site Aspect

N

Site Elevation

1750

Site Elevation Band

btl

Avalanche

Trigger Type

snowmobile

Avalanche Size

2.5

Trigger Sub Type

accidental

Start Zone Aspect

N

Vegetation Cover

openSlope

Start Zone Incline

38

Avalanche Character

persistentSlab

Number Of Avalanches

1

Start Zone Elevation

1750

Runout Zone Elevation

1650

Weak Layer Burial Date

2025-01-30

Weak Layer Crystal Type

surfaceHoarAndFacets

Start Zone Elevation Band

tln

Avalanche Occurrence Datetime

2025-03-06T21:15:00.000Z

Toe triggered machine accidental. Large propagation with remainder of slopes showing large cracks.

Incident

Group Size

2

Terrain Trap

slopeTransitionOrBench

Group Activity

snowmobiling

Number Involved

2

Number Caught Only

1

Number Fully Buried

1

Snow Depth Trigger Point

average

Terrain Shape Trigger Point

unsupported

Two people involved. One fully burried approx 1m deep. Second person in group successfully located and extricated the subject. They were flown to town to higher level of care.