Large Remote Trigger Avalanche West Aspect

Quick report

Ride Type

denseTrees

Stayed Away

alpineSlopes, convexSlopes, steepSlopes

Riding Quality

good

Snow Conditions

powder

Avalanche Conditions

avalancheConditionSlab, avalancheConditionSnow

Weather

Avg Temp

-13

Max Temp

-9

Min Temp

-20

Wind Speed

windSpeedCalm

Blowing Snow

none

Sky Condition

brokenClouds

New Snow24 Hours

20

Storm Start Date

2024-02-27

Storm Snow Amount

90

Temperature Trend

rising

Precipitation Type

none

Precipitation24 Hours

20

Avalanche

Run Length

600

Slab Width

1500

Trigger Type

snowmobile

Wind Exposure

crossLoadedSlope

Avalanche Size

3.5

Trigger Sub Type

remote

Start Zone Aspect

W

Trigger Distance

300

Vegetation Cover

openSlope

Start Zone Incline

36

Avalanche Character

persistentSlab

Crust Near Weak Layer

1

Number Of Avalanches

1

Runout Zone Elevation

2100

Weak Layer Burial Date

2024-02-10

Avalanche Observation

12to24hrsAgo

Weak Layer Crystal Type

stormSnow, surfaceHoar

Start Zone Elevation Band

tln

Avalanche Occurrence Datetime

2024-03-03T20:30:00.000Z

Group of Snowmobilers was riding further up valley and remote triggered a lower slope in the valley, which triggered a high center slope. As the avalanche ran out it stepped up and over to adjacent slopes. 80% of the face slid. some area to ground/rock, most triggered and ran on February crust. Group of riders were able to evacuate the area as the slide occurred, no burials and all members accounted for when the group was reached. Talking with other riders that day a similar occurrence happened 2 valleys south. At 1:30PM it was approximately - 13 in the Alpine and the face was receiving some Solar input from partially cloudy skys.

Incident

Group Size

10

Terrain Trap

gullyDepression, slopeTransitionOrBench, trees

Group Activity

snowmobiling

Number Involved

0

Number Caught Only

0

Number Fully Buried

0

Snow Depth Trigger Point

deep

Terrain Shape Trigger Point

planar

Number Partly Buried Impaired Breathing

0