11th Annual Utah Snow & Avalanche Workshop Open and Motorized Sessions Oct. 27th.
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Observation Date: 
1/20/2018
Observer Name: 
B: WP Level 2
Location Name or Route: 
Western Uintas/Weber Canyon
Weather
Sky: 
Obscured
Precipitation: 
Moderate Snowfall
Wind Direction: 
Northeast
Wind Speed: 
Light
Weather Comments: 
Temperatures low teens. Winds were initially NE and shifted to the NW. Wind blown and transport was light. Periods of heavy to moderate throughout most day. Skies remained cloudy.
Snow Characteristics
New Snow Depth: 
10"
New Snow Density: 
Low
Snow Surface Conditions: 
Powder
Wind Crust
Snow Characteristics Comments: 

Afternoon winds adversely effects snow surface even at mid elevations, and as a result riding was a bit inverted and slower than hoped. 

Red Flags
Red Flags: 
Heavy Snowfall
Wind Loading
Cracking
Collapsing
Poor Snowpack Structure
Avalanche Problem #1
Type: 
Persistent Weak Layer
Trend: 
Same
Problem #1 Comments: 

Various pit results:

9300, NNW, 25 degrees, HS: 105 cm, 46 up: CTH, SP, ECTP 24 SP

9500, NNE, 19 degrees, HS: 100 cm, 26 down: CT17, SP

 

Avalanche Problem #2
Type: 
Wind Drifted Snow
Trend: 
Increasing Danger
Problem #2 Comments: 

See above, and very likely at upper elevations. Due to sustained upper elevation winds, this problem may increase by Sunday. 

Of Note: Storm Slab appeared possible due to snow pit test scores indicating weaknesses at new snow/old snow interface. And also of concern would be the settlement of the new snow into a more cohesive slab layer. 

Danger only in areas traveled appeared Moderate for Persistent Slabs due to the poor snowpack structure as well possible Wind Slabs. 

 

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