The last avalanche forecast for the 2023-2024 season posted on April 21st. Thank you to all who contributed to the avalanche center this season through observations, volunteer time, and/or financial contributions.

Old crowns from Dec 11-12 avalanche cycle.

Location Name: Castle Peak Region: Donner Summit Area Observation Date & Time: Monday, December 12, 2022 - 04:00
Location: 39.368404, -120.350008 See map: CalTopo	Is this an Avalanche Observation?: Yes Conditions Alerts: Avalanche Activity Persistent Problem Recent Loading 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 Obvious Slide Path Trigger Points Terrain Matches the Advisory

Observation made by: Forecaster

Tabs

Observation

Description of Snow, Weather, and Avalanche Conditions:

Several old crowns on this slope.

Several old crowns on this slope.

Zoom in on one of the mid-slope corwns.

Zoom in on one of the mid-slope corwns.

Avalanche Details

Avalanche Type:

Persistent Slab

Failure Plane/Weak Layer:

Old Snow

Additional number of similar avalanches:

3

Trigger

Trigger:

Natural

Terrain

Aspect:

Northeast

Starting Elevation:

near-treeline

Size

Destructive Size:

D2 Could bury, injure, or kill a person.

Sponsors:

CA OHMVR

Mt. Rose Ski Tahoe

Heavenly Mountain Resort

Kirkwood Mountain Resort

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