Incidente

Avalanche: Chalk Creek

Craig Gordon/Joey ManshipUintas
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Quick report

Slope Angle
42°

Avalanche

Slab Width
183 m
Weak Layer
Ground Interface
Trigger Type
Snowmobiler
Vertical Fall
213 m
Avalanche Type
Hard Slab
Slab Thickness
183 cm
Trigger Detail
Unintentionally Triggered
Start Zone Aspect
Northwest
Avalanche Problem
Persistent Weak Layer
Start Zone Elevation
2987 m

Two snowmobilers trespassing in private terrain triggered this well connected and rather meaty slab. Heavily wind loaded NW aspect at 10,200', the slab broke 600' wide, running 700' vert... man, this thing had SNAP! Breaking to the dirt, I was pretty blown away by the connectivity of this pencil-plus, nearly knife hard slab... a rural, tree snapping repeater for sure.

Blocks of glacial density, almost knife hard snow

Joey standing on 300 cm of debris.

I bet this tree has lots of avalanche stories.

Incident

Number Caught
1
Number Carried
1
Terrain Summary
<p> </p> <p>Northwest facing slope at 9,800'. Steep, rocky, starting zone measuring 42 degrees.</p>
Number Fully Buried
1

Details are vague and we didn't get to talk to the riders. In fact, they didn't even report the slide. Instead, we were alerted by a local snowmobile guiding outfit.

Walking up the path, Joey Manship and I did the CSI... (Special Uinta Unit) thing, putting the pieces together of what went down. The two large holes we discover clearly suggest at least a partial human burial, along with nearly a full sled burial.