- Location: Berthoud Pass, Nitro Chute
- State: Colorado
- Date: 2010/11/16
- Summary Description: 1 snowboarded caught, carried, injured
- Primary Activity: Backcountry Tourer
- Primary Travel Mode: Snowboard
- Location Setting: Backcountry
- Caught: 1
- Partially Buried, Non-Critical: 0
- Partially Buried, Critical: 0
- Fully Buried: 0
- Injured: 1
- Killed: 0
- Type: SS
- Trigger: AR - Snowboarder
- Trigger (subcode): u - An unintentional release
- Size - Relative to Path: R3
- Size - Destructive Force: D2
- Sliding Surface: I - New/Old Interface
- Slope Aspect: NE
- Site Elevation: 11700 ft
- Slope Angle: 40 °
- Slope Characteristic: Convex Slope,Unsupported Slope
Cool and calm with periods of heavy snow. Overcast skies. Gusty along ridges.
Snowpack approximately 85-130 cm deep from just below treeline to above treeline. Approximately 30â€ of new snow, with wind slab evident at and above treeline. Recently formed windslab sits on near surface facets and some remaining buried surface hoar from old surface about 2 ft down. Moderate wind effect evident.
Events Leading to the Avalanche
The rider caught had no pack, no beacon,
no shovel or probe. Neither did his partner, another snowboarder. He had a Bernese Mountain Dog that
did not get caught.
1 male snowboarder caught in avalanche this at 09:15 am Caught and transported over cliff band (nitro). Evac by GCSAR completed by 11:30. Subject had back injury. Transported by ambulance to Denver hospital. 2' fracture at crown.
Figure 2: Profile taken near the fracture line. Avalanche leased on the thin faceted layer approximately 2 feet down from the surface