Observer Name
Chester
Observation Date
Thursday, December 22, 2016
Avalanche Date
Sunday, December 18, 2016
Region
Salt Lake
Location Name or Route
Martha bowl
Elevation
10,200'
Aspect
North
Slope Angle
40°
Trigger
Unknown
Avalanche Type
Hard Slab
Weak Layer
Facets
Depth
3'
Width
300'
Vertical
175'
Comments
I don't know when this slid. It was not during the snowfall from this weekend but was before yesterday's 1". There was a ski track that took a entry down then disappeared after the crown, had no out that I saw, I did a quick become search. This makes me think It could have been human triggered, or more likely somebody hit it sun or mon, and it went later on its own. Full bowl went, thinner crown on East end. Ran to an uphill speed bump with trees. bout 1/3 full track(which would be the lake). Don't know if it was a persistent layer or just a standard wind slab, weak layer was 1-2" thick, realativly light fluffy snow. Bed seemed like a wind crust. Not sure if weak layer was persistent facets. I looked for grapple, none observed. While I was digging I looked for depth hoar, just a peppering around rocks. I did a quick extended column test around crown, no results but was able to pry a block off.
Comments
There is also a 70' long crown 2' deep crown on tuskarota skiiers right of seagulls or 3 chute-thinking wind slab. East facing, GuessingSimilar timing didn't run far
