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Avalanches on Donner Peak

Location Name: Donner Peak Region: Donner Summit Area Observation Date & Time: Monday, January 9, 2023 - 10:00
Location: 39.312515, -120.312332 See map: CalTopo	Is this an Avalanche Observation?: Yes Conditions Alerts: Avalanche Activity Recent Loading Recent Loading›Blowing Snow Recent Loading›Rain on Snow Recent Loading›Snowfall Rates of More Than 1 in/hr Terrain Alerts: Slopes Steeper than 30 degrees Obvious Slide Path Trigger Points Terrain Traps Terrain Matches the Advisory

Observation made by: Forecaster

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Observation

Description of Snow, Weather, and Avalanche Conditions:

We could see several avalanches on Donner Peak from the closure gate on Old Highway 40 today. Since we viewed these from afar, we do not have many details on them. It looks like some of them were wind slabs at the higher elevations, some mid-elevation ones may have been storm slabs, and some of the lower elevation ones may have involved wet snow.

Photo showing several avalanches on Donner Peak.

Avalanche Details

Additional number of similar avalanches:

5-10

Trigger

Trigger:

Natural

Terrain

Start Zone Slope Angle:

40degrees

Aspect:

Northeast

Starting Elevation:

near-treeline

Size

Destructive Size:

D2 Could bury, injure, or kill a person.

Relative Size:

R3 Medium

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Avalanches on Donner Peak

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Avalanches on Donner Peak

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