Ad
Observation Date: 
12/29/2017
Observer Name: 
ryan c
Region: 
Salt Lake
Location Name or Route: 
Guardsman Pass
Weather
Sky: 
Clear
Weather Comments: 
Clear and sunny. Warm. 45deg F.
Snow Characteristics
Snow Surface Conditions: 
Dense Loose
Faceted Loose
Snow Characteristics Comments: 
Shaded slope, sheltered, right off the Guardsman Pass road. Loose snow on the surface. Denser snow for the remainder of the top 35cm (this is the slab).
Red Flags
Red Flags: 
Recent Avalanches
Cracking
Collapsing
Poor Snowpack Structure
Red Flags Comments: 
Two avalanches on same aspect from Thursday. Large collapses on flat areas that shook trees/bushes. Cracking around skis. Multiple crust/facet layers.
Avalanche Problem #1
Type: 
Persistent Slab
Trend: 
Same
Problem #1 Comments: 
Thought I would get easier propagation in ECTs. All tests failed on the same layer. 1st ECT: ECTN 23 Q2 2nd ECT: ECTN 17 Q2 Tapped on the remainder of the slab, which then propagated at 24 taps, Q2. Seems to not be as reactive/sensitive as in the few days immediately after the storms. Slab will be breaking larger, as evidenced by several previous avalanches around 300ft wide.
Snow Profile
Aspect: 
Northeast
Elevation: 
8400
Slope Angle: 
30
Comments: 
Slab is not as sensitive as it has been. I was surprised to see that I was not getting propagations on the first fracture, but only when I continued tapping on the remainder of the ECT. Still experiencing widespread large collapses and whoomphing. I think you're still floating between Possible/Unlikely for human triggered avalanches, but size may be D3. This puts us in the considerable range for our persistent slab. With no snow in the foreseeable future, the snow surface will be weakening, and of course the persistent slab will still linger.
Observer email: 
rcuzme@gmail.com
Today's Observed Danger Rating: 
Considerable
Tomorrows Estimated Danger Rating: 
Considerable
Snow Profile Coordinates: 
Ad

Support the Avalanche Center through your purchases

Discount lift tickets
All proceeds from ticket sales benefit the UAC when you purchase your next lift tickets.
Lift tickets available in November
Need new gear?
Make your next purchase from our Affiliate Partners and the UAC will receive a portion of the sales.
Shop
Sign up for our newsletters, emails and daily forecasts to stay up to date.
Subscribe