Cornice Failure on Relay Peak

Location Name: 
Relay Peak Ridgeline
Region: 
Mount Rose Area
Observation Date & Time: 
Wednesday, November 9, 2022 - 11:23
Location: 
39.329996, -119.939699
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
Obvious Slide Path
Trigger Points
Observation made by: Educator at Alpenglow Expeditions

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Observation
Description of Snow, Weather, and Avalanche Conditions: 

Went for a tour in the Relay Peak zone to check out what the final leg of the strom provided for the NE corner of lake tahoe. Found snowdepths ranging from 40cm to 110cm in wind affected areas. Toured up the access road towards relay peak, breaking trail with about 25cm of ski penetration. No other instablities were observed besides this cornice failure. While this slide was intentionally triggered, larger, more consequential terrain should be evaluated with great care. Happy skiing!

Hide Snowpack Details
Total Snow Depth: 
110cm
Hide Terrain Details
Terrain: elevations: 
Above Treeline
Terrain: aspects: 
E
Hide Avalanche Details
Avalanche Type: 
Cornice
Failure Plane/Weak Layer: 
New/old snow interface
Hide Trigger
Trigger: 
Skier
Trigger Modifier: 
Intentionally Triggered
Hide Terrain
Start Zone Slope Angle: 
28degrees
Hide Size
Destructive Size: 
D1 Relatively harmless to people.
Relative Size: 
R1 Very Small
Crown Height: 
Less than 1 ft
Avalanche Width (Average width): 
45ft.
Avalanche Length (Vertical Run): 
30ft.
Hide People Involved
Number of people caught: 
0
Number of partial burials: 
0
Number of full burials: 
0
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