11th Annual Utah Snow & Avalanche Workshop Open and Motorized Sessions Oct. 27th.
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Observation Date: 
1/8/2016
Observer Name: 
Leeds/Hunter
Location Name or Route: 
Brian Head Sidecountry
Weather
Sky: 
Obscured
Precipitation: 
Moderate Snowfall
Wind Direction: 
North
Wind Speed: 
Moderate
Weather Comments: 
High country socked in most of the day. Moderate snowfall during the day. Wind transporting snow in the upper elevations.
Snow Characteristics
New Snow Depth: 
4"
New Snow Density: 
Low
Snow Surface Conditions: 
Powder
Dense Loose
Wind Crust
Snow Characteristics Comments: 

4" overnight, however Brian Head has received 20" or so this week, mostly in 4" impulses, not a bad way to go!  Some dense drifted snow in exposed areas.  Some minor wind crusts.

Some rimed snow and pellets during the day.

Red Flags
Red Flags: 
Heavy Snowfall
Wind Loading
Cracking
Poor Snowpack Structure
Avalanche Problem #1
Type: 
Wind Drifted Snow
Trend: 
Same
Problem #1 Comments: 

Wind slabs in exposed areas.  Some drifting up to 2" deep.

Moderate danger in areas traveled, I would expect pockets of considerable in areas above treeline.

Avalanche Problem #2
Type: 
Persistent Weak Layer
Problem #2 Comments: 

Weak basal facets underlie a strong mid-pack.   Good bridging but we are not out of the water yet.

Low to moderate  probability but high consequence.  ECTN it took full body weight to break the base of the column in an area with an HS of 140 cm.

Snow Profile
Aspect: 
North
Elevation: 
10200
Slope Angle: 
31
Comments: 

Photos below:  basal facets and ECTN,  after testing I broke the the column with full body weight, and I ma no lightweight!  Note the consistent, strong mid-pack.

While filling in the snow pit with a ski push from above we observed some shear planes in the upper pack, minor and not reactive during ECT testing.

Overall I did not see any alarming today, I am still concerned with basal facets throughout SW Utah, I am am treating the snowpack as guilty until proven otherwise.  Coming from the Wasatch, I am treating the snowpack in the Tushers and Brian Head areas as more of a continental type snowpack.  

Overall a moderate danger with the potential for pockets of considerable in upper elevation wind loaded areas. 

Many thanks to the Brian Head Ski Patrol for a great tour!

Forecast hazard based on worst case scenario, mostly moderate below treeline.

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