Size 3 DPS, Remote Triggered

Quick report

Weather

stormy

Ride Type

denseTrees

Riding Quality

amazing

Snow Conditions

deepPowder, heavy, powder

Avalanche Conditions

avalancheConditionSlab, avalancheConditionSnow

Skied near Pedley Pass yesterday (Wednesday). We were surprised to find 40cm of storm snow at treeline tapering to 20cm at 1700m. This was overlying a ~5cm breakable crust on north aspects. There was also large graupel near the bottom of the storm snow. Moderate NW winds were forming wind slabs near ridgetop. A storm slab was also forming throughout the day in sheltered areas. The storm snow appeared to be bonding poorly to the crust/graupel. While skinning along a ridge at 2350m we remotely triggered a size 3 deep persistent slab from 5m away, on a north aspect (see avalanche tab). We couldn’t see the whole start zone due to poor visibility, but we suspect it propagated the full width of the feature. It was a triggered from a thin spot (~60cm deep). This was a big surprise as we were expecting only surface instabilities and were admittedly in too much of a spring mindset. A good reminder of the unpredictability of the deep persistent slab problem, and that a winter snowpack can still be found at upper elevations on north aspects.

Avalanche

Run Length

1000

Slab Width

140

Trigger Type

skier

Avalanche Size

3

Slab Thickness

120

Trigger Sub Type

remote

Start Zone Aspect

N

Trigger Distance

5

Vegetation Cover

openSlope

Start Zone Incline

35

Avalanche Character

deepPersistentSlab

Number Of Avalanches

1

Start Zone Elevation

2350

Runout Zone Elevation

1900

Avalanche Observation

12hrsAgo

Weak Layer Crystal Type

depthHoar

Start Zone Elevation Band

tln

Avalanche Occurrence Datetime

2024-05-01T18:00:00.000Z