Remote Trigger N Aspect

Weather

Snowfall Rate

2

Precipitation Type

snow

Avalanche

Run Length

300

Slab Width

20

Trigger Type

skier

Avalanche Size

2

Slab Thickness

60

Trigger Sub Type

remote

Start Zone Aspect

N

Trigger Distance

150

Vegetation Cover

sparseTrees

Avalanche Character

persistentSlab, windSlab

Number Of Avalanches

6-10

Avalanche Observation

12hrsAgo

Weak Layer Crystal Type

facets

Start Zone Elevation Band

tln

Avalanche Occurrence Datetime

2025-03-09T19:00:00.724Z

While ascending trees at approximately 1900 m of a N treed aspect of Hero’s knob, one skier remote triggered the slope about 150 m above us. One skier was caught and carried 15 m. We were below tree line and the avalanche occurred at tree line. We were very surprised at how far above us this triggered from. We expect we collapsed the deep persistent layer from below which was primed from the weight of the new storm snow. See photo for crown of avalanche. Snowfall in the area was much heavier than expected overnight, with approximately 20cm new snow by 10am and S1-S2 throughout the day. There was consistent natural avalanche activity from 12:00 PM onwards from up valley.

Incident

Terrain Trap

trees

Group Activity

skiing

Snow Depth Trigger Point

deep

Terrain Shape Trigger Point

convex

Skier was carried approximately 15 m. Breathing not affected, no injuries.