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Observation Date: 
03/3/2018
Observer Name: 
P Diegel
Region: 
Salt Lake
Location Name or Route: 
Main Porter
Weather
Sky: 
Overcast
Wind Direction: 
Southwest
Wind Speed: 
Light
Weather Comments: 
On the leading edge of the storm light variable wind when I started, rapidly increasing by the time I was done
Snow Characteristics
Snow Surface Conditions: 
Dense Loose
Snow Characteristics Comments: 

Highly variable snow surface - I was about 200 ft below the ridgeline on a lee slope with a wide range of wind effect from the last 24 hours

Red Flags
Red Flags: 
Wind Loading
Poor Snowpack Structure
Red Flags Comments: 
The snow structure was not as dramatically bad as I expected based on reports
Avalanche Problem #1
Type: 
Persistent Slab
Trend: 
Same
Avalanche Problem #2
Type: 
Wind Slab
Trend: 
Increasing Danger
Problem #2 Comments: 

Wind effect was limited to an easily breakable 2-4 cm surface in the spot I dug.  Between that point and the ridgeline the snow surface ranged from soft and dense to supportable wind board

Snow Profile
Aspect: 
Northwest
Elevation: 
9200
Slope Angle: 
27
Comments: 

Stability tests: Several compression tests and an ECT yielded no results but several shovel shear tests showed a very easy failure with Q2 shear, 1 of 3 failing about 40 cm down and again at 75 cm and 2 others failing 75 deep, both depths failing on 4 finger hardness small facets below a pencil hard layer. Total snow depth 175 cm.  I've never noticed such an easy shear failure with no compressive failure.

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