11th Annual Utah Snow & Avalanche Workshop Open and Motorized Sessions Oct. 27th.
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Observation Date: 
1/13/2018
Observer Name: 
Bo Torrey
Location Name or Route: 
Grizzly Gulch UAC 101 class
Weather
Sky: 
Clear
Wind Direction: 
Northwest
Wind Speed: 
Calm
Weather Comments: 
Clear, calm, sunny sky's. South face began to take on heat from the sun. Noticed roller balls coming down. Primarily on S SW
Snow Characteristics
New Snow Depth: 
10"
New Snow Density: 
Medium
Snow Surface Conditions: 
Powder
Faceted Loose
Snow Characteristics Comments: 

Surface hoar beginning to form. 

Red Flags
Red Flags: 
Recent Avalanches
Rapid Warming
Poor Snowpack Structure
Avalanche Problem #1
Type: 
Persistent Weak Layer
Trend: 
Same
Problem #1 Comments: 

Snowpack appears to be adjusting to the previous storm's water weight and the Persistent slab is becoming more difficult to trigger but the consequences of doing so remain the same.  Pulling out a 1-3 ft deep slab that has consistently been wider than 75ft. 

Our group performed 3 ECT's today. Not 1 test pit showed propagation. Stability tests continue to be unreliable for predicting stability on slopes. It would be easy to think that things are settling out, but persistent slab avalanches are continuing to be triggered.

Snow Profile
Aspect: 
Northeast
Elevation: 
9400
Slope Angle: 
34
Comments: 

Today's Observed Danger Rating: 
Considerable
Tomorrows Estimated Danger Rating: 
Considerable
Snow Profile Coordinates: 
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