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.

Natural Wind Slab Avalanche on Lincoln Ridge

Location Name: Lincoln Ridge Region: Yuba Pass Area Observation Date & Time: Sunday, February 5, 2023 - 09:00
Location: 39.590844, -120.490295 See map: CalTopo	Is this an Avalanche Observation?: Yes Conditions Alerts: Avalanche Activity 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 Obvious Slide Path Trigger Points Terrain Matches the Advisory

Observation made by: Forecaster

Tabs

Observation

Description of Snow, Weather, and Avalanche Conditions:

This avalanche occurred on Feb 5, 2023, during the storm. It had several inches of fresh snow on the debris, so it likely occurred in the morning. We observed it on Feb 6.

One side of the wind slab avalnache than failed naturally during the storm on Feb. 5

One side of the wind slab avalnache than failed naturally during the storm on Feb. 5

The other side of the wind slab avalnache than failed naturally during the storm on Feb. 5

The other side of the wind slab avalnache than failed naturally during the storm on Feb. 5

Avalanche Details

Avalanche Type:

Wind Slab

Failure Plane/Weak Layer:

Storm Snow

Additional number of similar avalanches:

1

Trigger

Trigger:

Natural

Terrain

Start Zone Slope Angle:

37degrees

Aspect:

Northeast

Starting Elevation:

near-treeline

Size

Destructive Size:

D2 Could bury, injure, or kill a person.

Relative Size:

R3 Medium

Crown Height:

2 ft

Avalanche Width (Average width):

80ft.

Avalanche Length (Vertical Run):

50ft.

Sponsors:

Heavenly Mountain Resort

Kirkwood Mountain Resort

CA OHMVR

Mt. Rose Ski Tahoe

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