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Observation: West Monitor

Observation Date
3/14/2022
Observer Name
Bruce Tremper
Region
Salt Lake » Park City Ridgeline » Monitors » West Monitor
Location Name or Route
West Monitor
Weather
Sky
Clear
Wind Speed
Light
Weather Comments
Beautiful, bluebird morning with some increasing high clouds.
Snow Characteristics
New Snow Depth
6"
New Snow Density
Low
Snow Surface Conditions
Powder
Snow Characteristics Comments
Six to eight inches of new powder from yesterday and clear overnight, kept the powder cold in the morning. But with strong spring sun, snow was getting a bit manky on sun exposed slopes but stayed dry in the shade.
Red Flags
Red Flags
Rapid Warming
Poor Snowpack Structure
Red Flags Comments
My wife, Susi, broke her patella about a week ago (just slipping on some loose dirt on the neighborhood trail). It was lonely without my constant outdoor adventuring partner for the past three decades, but the only upside is that I'm free to geek out on snow and snowpits without all that pesky skiing stuff. Snowpits are so much more fun. See below for results. There was surprisingly few people out today, especially considering we just had fresh powder yesterday and it was bluebird today. I skinned along the Park City ridgeline above the Monitors and Scott's Peak and dug a few snowpits. I only saw one lone ski track in the Meadow Chutes, which astounded me since it's usually so popular. No tracks in the Monitors with the exception of mine and three others down the gentle, sneak route between West Monitor and South Monitor as I went down to a protected north facing opening to dig a snowpit. On my way back from West Monitor, I noticed a lone skier had put a track down the middle of South Monitor since I looked at it an hour earlier. Of course there were tracks in USA Bowl but very few visible in most of the other popular slopes. Maybe it's just spring in the air and everyone is loosing interest. Maybe they are actually afraid of avalanches. Stranger things have been known to happen. Either way, I'm not complaining. I nearly had the place to myself. I did not experience any collapsing or see any recent avalanche activity, but I stayed on gentle terrain all day.
Avalanche Problem #1
Problem
Persistent Weak Layer
Problem #1 Comments
Yes, it's still there, down about 60 cm and it's still propagating across columns in my snowpit tests with medium provocation. From what I saw today, I don't like it, don't trust it. The avalanche forecast has done a fabulous job of advertising this problem. Pay attention.
Snow Profile
Aspect
North
Elevation
9,500'
Slope Angle
25°
Comments
I dug a couple good pits in my favorite, representative locations. Yup, the faceted weak layer from the January-February drought is still there and still weak and still propagating fractures without too much provocation. Don't like it. The weakest pit I had was on sheltered, north facing opening about halfway down the sneak ridge down between West Monitor and South Monitor, which you can accesses very safely. My compression tests were collapsing on medium hand taps to medium elbow taps 5-15. My extended column tests were propagating on the faceted snow 60 cm down from the January-February drought. Out of four tests, they propagated on 11, 15, 20 and 21 taps, which means that an easy tap from the elbow to an easy tap from the shoulder. My propagation saw tests both propagated 25/90, which means that I cut 25 cm across a 90 cm column before the fracture propagated to the end of the column. In other words, it's definitely possible to trigger an avalanche on this layer and it's going to be big enough to be quite serious. I also dug another snowpit on a west-northwest facing slope at 9,700' (not plotted here) and got similar results but with harder taps and slightly deeper. As I traveled, I regularly probed the snowpack with the handle end of my ski pole and I could feel this weak layer almost everywhere I probed. In other words, it's widespread. Bottom line: I'm staying off anything steeper than 30 degrees in steepness (including locally connected terrain especially above) on all slopes that face the shady half of the compass, E-N-W.
Photo 1&2 no tracks in South Monitor but an hour later, one lone skier jumped in without incident. Photo 2, one lone ski track visible in Meadow Chutes. Photo 4, No takers in West Monitor.
Today's Observed Danger Rating
Considerable
Tomorrows Estimated Danger Rating
Considerable