11th Annual Utah Snow & Avalanche Workshop Open and Motorized Sessions Oct. 27th.
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Observation Date: 
1/24/2017
Observer Name: 
Mark Staples
Location Name or Route: 
Between Bountiful and Grandview Peaks
Weather
Sky: 
Overcast
Precipitation: 
Light Snowfall
Weather Comments: 
Very cloudy and foggy with light snow most of the day. LIght winds today, but previous winds have made large drifts all along the road and on the West side of these mountains.
Snow Characteristics
New Snow Depth: 
6"
New Snow Density: 
Low
Snow Surface Conditions: 
Powder
Snow Characteristics Comments: 

Light snow on top, but obvious denser layer under that with another soft layer under that. Challenging riding conditions with this upside down snow.

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

I didn't look very hard, and I easily found a layer of small facets. This layer propagated a crack in Extended Column Tests repeatedly with varying amounts of force. In one case it broke with just 10 light taps from the wrist (ECTP10). That was scary. Other scores were ECTP16 and ECTP25. This layer is consistently 3 feet deep. It looked like there was a slight crust under these facets. Also, I could find a few surface hoar crystals but these were hard to find.  

Avalanche Problem #2
Type: 
New Snow
Problem #2 Comments: 

Layer of soft snow (low density snow from early in the storm (Fri/Sat?) produced an ECTP16 as well. However, I could not get anything to crack on small test slopes.

Wind slab also a concern.

Snow Profile
Aspect: 
Northeast
Elevation: 
7900
Slope Angle: 
31
Today's Observed Danger Rating: 
None
Tomorrows Estimated Danger Rating: 
Considerable
Snow Profile Coordinates: 
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