Storm Slab on Powderhouse Peak

Location Name: Waterhouse Peak Region: Luther Pass Area (including Job and Freel) Observation Date & Time: Thursday, January 28, 2021 - 12:00
Location: 38.786600, -119.980500 See map: CalTopo	Is this an Avalanche Observation?: Yes Conditions Alerts: Recent Loading Recent Loading›Blowing Snow Recent Loading›More Than a Foot of New Snow Recent Loading›Snowfall Rates of More Than 1 in/hr Terrain Alerts: Slopes Steeper than 30 degrees Trigger Points Terrain Matches the Advisory

Observation made by: Public

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Observation

Description of Snow, Weather, and Avalanche Conditions:

Stayed in the lower angle trees to the west. Some cracking observed along skin track, generally when the second skier compressed the new track. Triggered one small slab 8-10" on a convexity which revealed a rock.

Terrain Details

Terrain: elevations:

Below Treeline

Terrain: aspects:

Avalanche Details

Avalanche Type:

Storm Slab

Failure Plane/Weak Layer:

Storm Snow

Trigger

Trigger:

Skier

Trigger Modifier:

Accidentally Triggered

Terrain

Start Zone Slope Angle:

40degrees

Aspect:

Northwest

Starting Elevation:

below-treeline

Size

Destructive Size:

D1 Relatively harmless to people.

Relative Size:

R1 Very Small

Crown Height:

Less than 1 ft

Avalanche Width (Average width):

10ft.

Avalanche Length (Vertical Run):

10ft.

People Involved

Number of people caught:

Number of partial burials:

Number of full burials:

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Storm Slab on Powderhouse Peak

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Storm Slab on Powderhouse Peak

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