11th Annual Utah Snow & Avalanche Workshop Open and Motorized Sessions Oct. 27th.
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Observation Date: 
1/6/2017
Observer Name: 
Toddeo
Region: 
Southwest
Location Name or Route: 
Tushers - Lake Peak
Weather
Wind Direction: 
North
Wind Speed: 
Light
Weather Comments: 
A lot warmer up high than in the valley! Light winds in the am, minor plumes off of the highest peaks. Subsided by mid-morning.
Snow Characteristics
New Snow Depth: 
11"
New Snow Density: 
High
Snow Surface Conditions: 
Dense Loose
Wind Crust
Rain-Rime Crust
Snow Characteristics Comments: 

Mixed bag depending on elevation and wind exposure.

New snow was dense and included graupel.  At 1st I thought that all of the SW UY snotels must be broken since they were reporting over an inch of water and not very much snow.  Turns out the snow was just dense.  It seemed lighter (and deeper!) in Fillmore.

The alpine was scoured down to preexisting surfaces which included rime and old wind slabs/crusts.

Red Flags
Red Flags: 
Wind Loading
Collapsing
Avalanche Problem #1
Type: 
Wind Drifted Snow
Trend: 
Same
Problem #1 Comments: 

Moderate hazard

Avalanche Problem #2
Type: 
Deep Slab
Trend: 
Same
Problem #2 Comments: 

There are still basal facets in places.  It would be worth performing a detailed assessment before skiing any large north-facing slope.

Comments: 

No detailed profiles today.  In general the storm came in warm and appears to have bonded moderately well.  Quick ECT'S were negative outside of the alpine.  Photo below, Typical results of quick ECTN on a west facing slope at 10,800'.

There is a rime crust at the base of the new snow.

Photos below:

1. ECTPV, failure on pooled graupel, 35-37 degree slope at 10,900'.  Basal facets are located at base of ski pole.

2. The pooled graupel

3.  Basal facets, they are rounding.  Graupel is from higher up the profile.

Photos below show alpine conditions, not powder.....

Photo below:

It was possible to release minor wind slab/crusts

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