11th Annual Utah Snow & Avalanche Workshop Open and Motorized Sessions Oct. 27th.
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Observation Date: 
1/12/2018
Observer Name: 
Tyler Falk / AAI Level 1
Location Name or Route: 
Patsy Trees
Weather
Sky: 
Obscured
Precipitation: 
Light Snowfall
Wind Direction: 
Northwest
Wind Speed: 
Light
Weather Comments: 
Light winds at the trailhead in upper LCC, moderate when we got to the pass. Light S1 snow in the morning which tapered off by noon. Ryme noticed on the West side of branches and trees.
Snow Characteristics
New Snow Depth: 
2"
New Snow Density: 
Medium
Snow Surface Conditions: 
Powder
Dense Loose
Wind Crust
Snow Characteristics Comments: 

Winds got to more terrain in the last 24 hours where you would expect it in exposed locations down to 9k.  Around 5cm of new moderate density snow in upper LCC. Still some wet grains down 50cm in the snowpack at 8500. Once you get above 9k those grains dry out. Height of snow at 9800 was around 120-140 cm on W-NW aspects. 

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

I would make this again the number one concern for tomorrow. Test results were showing that the weak snow was getting harder to trigger but propagation still possible in many areas. ECT's were getting broken failures at 26cm and 73cm down. PST results in the same area showed PST 30/100 End 73cm down on 3mm DH. This was at 10200 on a NW aspect. 

Avalanche Problem #2
Type: 
Wind Drifted Snow
Trend: 
Same
Problem #2 Comments: 

Likely on a variety of exposed aspects above 10k possibly more pronounced on SE aspects from the strong NW winds last night. 

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