Observation: Mirror Lake Highway

Observation Date
12/15/2015
Observer Name
jg
Region
Uintas » Mirror Lake Highway
Location Name or Route
Mirror Lake Highway
Weather
Sky
Broken
Precipitation
Light Snowfall
Wind Direction
Northwest
Wind Speed
Light
Weather Comments
Broken to overcast skies with on and off instability showers all day. Trace to an inch of very light density snow during the day. Light to moderate winds from the NW moving the light density snow. Temps in the mid single digits at 10K. Cold day in the alpine.
Snow Characteristics
New Snow Depth
6"
New Snow Density
Low
Snow Surface Conditions
Powder
Snow Characteristics Comments

6"-12" of light density storm snow above 9K. Full on blower pow.

Red Flags
Red Flags
Wind Loading
Cracking
Poor Snowpack Structure
Avalanche Problem #1
Problem
Persistent Weak Layer
Trend
Same
Problem #1 Comments

Trend dependant on wind and/or more snow.

Snow Profile
Aspect
Northeast
Elevation
10,800'
Slope Angle
Unknown
Comments

Lots of cracking while breaking trail today.

Active winds in the alpine. North winds blowing snow to the south.

Small cornice fall on a south facing slope loaded by the north winds.

Views of the big peaks were mostly obscured today but when I was able to have a look around I saw no recent avalanche activity. Seems like we haven't gotten quite enough new water weight and wind to make a big difference as far as stability goes. My stability tests reflected the basal facets and the inferface between the large grain facets deep in the pack and the smaller grain facets just below mid-pack as the weakest interfaces.The weak snow pack structure is enough to keep me on my toes.

Still pretty pretty lowtide in the Uintas but this storm helped out a lot. While there are still lots of obstacles just barely covered, the riding and sliding were my best of the year.

Today's Observed Danger Rating
Moderate
Tomorrows Estimated Danger Rating
Moderate