Observation: Hoyt Peak

Observation Date
2/16/2019
Observer Name
jg
Region
Uintas » Hoyt Peak
Location Name or Route
Hoyt Peak
Weather
Sky
Broken
Wind Direction
Southwest
Wind Speed
Light
Weather Comments
Overcast early in the day with clouds slowly trying to break up as the day went on. Temps in the mid teens at 9K
Snow Characteristics
New Snow Depth
8"
New Snow Density
Low
Snow Surface Conditions
Powder
Snow Characteristics Comments
4"-8" of low density, blower pow.
Red Flags
Red Flags
Recent Avalanches
Wind Loading
Poor Snowpack Structure
Red Flags Comments
Not many red flags where I was traveling which was in mid elevation sheltered terrain. I checked the wind loading box due to this week's wind events.
Avalanche Problem #1
Problem
Persistent Weak Layer
Trend
Same
Problem #1 Comments
Where I was traveling, this was the biggest hazard.
Avalanche Problem #2
Problem
Wind Drifted Snow
Trend
Decreasing Danger
Problem #2 Comments
Again, this wasn't an issue where I was today but recent winds have been strong from the south and south west loading north through north east facing slopes. The new, low density snow is now covering most of these wind drifts. There's a lot of low density snow available for transport right now but it looks like the winds are forecasted to be relatively calm tonight. Of note, there may be an easterly component to the winds over the next couple of days.
Snow Profile
Aspect
Northwest
Elevation
9,000'
Slope Angle
30°
Comments
Awesome conditions today. Low angle terrain is skiing great. The dense snow capped with the light density snow is fast and fun! Slope angle is your friend, pull out your inclinometer and actually see how steep the slope is you want to ride or ski. Blower pow on the sled as well, just watch out for some of the giant wind drifts that were formed this week in open terrain and terrain well off the ridge lines, my back hurts thinking about getting stuck and having to dig my sled out.
Column and extended column tests showed some weaknesses in the top meter of snow but they didn't want to propagate across an extended column. My pit tests today reflected the faceted snow that formed at the end of January as the weakest interface. Although failing with hard effort, ECTP23, the column popped with a lot of energy and slid into the pit. I found preserved surface hoar and surface facets at this interface. Big red flag for me.
The early January and December weaknesses are getting deeper in the pack and ECT's probably don't properly reflect the strength or lack thereof of these layers. What I am still seeing are clean shears in extended columns and with shovel shears on these layers on 1mm-2mm faceted grains that are just beginning to round out. (PHOTO BELOW) These layers are scary deep and still problematic and something to be hyper-aware of.
Last night's snow didn't add enough water weight to make any kind of difference in snow stability but this week's dense snow and massive amount of wind loading left a lot of slopes teetering in the balance between sliding and not sliding and are just waiting for some kind of trigger. You don't want to be the trigger in this type of setup as avalanches are going to be deep and probably wide. It again comes down to wise terrain choices, staying off of, out from under or connected to steep wind drifted terrain. It's really hard to reign yourself in when conditions are this good but patience is still the name of the game for me. Craig's forecasts have been spot on and reflect what's going on out there, just have a look at some of the avalanches we've had this season in the Uintas, its downright scary.
On a lighter note, the Uintas are stacked for mid February!
Today's Observed Danger Rating
Considerable
Tomorrows Estimated Danger Rating
Considerable