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Small wind slab release in Broken Glass Bowl. 10-30cm deep, approx. 20m wide

Location Name: Broken Glass Bowl Region: Mount Rose Area Observation Date & Time: Tuesday, April 7, 2020 - 12:15
Location: 39.321767, -119.924145 See map: CalTopo	Is this an Avalanche Observation?: Yes Conditions Alerts: Avalanche Activity Terrain Alerts: Slopes Steeper than 30 degrees Trigger Points

Observation made by: Public

Tabs

Observation

Description of Snow, Weather, and Avalanche Conditions:

Small wind slab avalanche in Broken Glass Bowl. Very poor visibility, estimated 10-30cm deep, 20m wide and ran 30-40m vertical ran within the storm snow.

Small avalanche debris. Ran ~100' vertical.

Small avalanche debris. Ran ~100' vertical.

Deepest portion of the wind slab. ~30cm deep, all within the new snow.

Deepest portion of the wind slab. ~30cm deep, all within the new snow.

Terrain Details

Terrain: elevations:

Near Treeline

Terrain: aspects:

N

Avalanche Details

Avalanche Type:

Wind Slab

Failure Plane/Weak Layer:

Storm Snow

Trigger

Trigger:

Natural

Terrain

Start Zone Slope Angle:

35degrees

Aspect:

North

Starting Elevation:

near-treeline

Size

Destructive Size:

D1 Relatively harmless to people.

Relative Size:

R1 Very Small

Crown Height:

1 ft

Avalanche Width (Average width):

60ft.

Avalanche Length (Vertical Run):

100ft.

Sponsors:

CA OHMVR

Kirkwood Mountain Resort

Mt. Rose Ski Tahoe

Heavenly Mountain Resort

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