Wind Slab Avalanche Frog Lake

Location Name: Frog Lake into Red Lake Region: Carson Pass Area Observation Date & Time: Sunday, December 16, 2018 - 10:00
Location: 38.689820, -119.985406 See map: CalTopo	Is this an Avalanche Observation?: Yes Conditions Alerts: Avalanche Activity Recent Loading Recent Loading›Blowing Snow Terrain Alerts: Slopes Steeper than 30 degrees

Observation made by: Public

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Observation

Description of Snow, Weather, and Avalanche Conditions:

Set off a significant hard wind slab dropping into Red Lake. Avalanche was triggered by me turning on the slope. I was initially caught in slide but I had enough momentum to move to edge of slide and grab a hold of a tree and hang on as the avalanche passed.

Slide path

50yds from where avalanche was triggered

The larger snow block is the size of a compact car for reference

Avalanche Details

Avalanche Type:

Wind Slab

Failure Plane/Weak Layer:

Old Snow

Trigger

Trigger:

Snowboarder

Trigger Modifier:

Accidentally Triggered

Terrain

Start Zone Slope Angle:

32degrees

Aspect:

North

Starting Elevation:

near-treeline

Size

Destructive Size:

D2 Could bury, injure, or kill a person.

Relative Size:

R2 Small

Crown Height:

Less than 1 ft

Avalanche Width (Average width):

75ft.

Avalanche Length (Vertical Run):

300ft.

People Involved

Number of people caught:

Number of partial burials:

Number of full burials:

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Wind Slab Avalanche Frog Lake

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Wind Slab Avalanche Frog Lake

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