Observation Date
12/12/2016
Observer Name
Weed
Region
Logan » Logan River » Tony Grove
Location Name or Route
Tony Grove West
Weather
Sky
Overcast
Precipitation
Light Snowfall
Wind Direction
North
Wind Speed
Moderate
Weather Comments
Increasing clouds and wind in the afternoon. Some snowfall and drifting snow
Snow Characteristics
New Snow Depth
3'
New Snow Density
Medium
Snow Surface Conditions
Powder
Snow Characteristics Comments
New snow from 12/8- 12/11 fairly congruous and was mostly supportable on skis. Fairly easy to travel on top of, good riding and didn't hit many rocks.
Red Flags
Red Flags
Recent Avalanches
Wind Loading
Poor Snowpack Structure
Red Flags Comments
few obvious red flags...
Avalanche Problem #1
Problem
Persistent Weak Layer
Trend
Same
Problem #1 Comments
We found evidence of recent natural avalanches failing on weak snow near the ground, and our test pit on a north facing slope at 9000' showed easy propagating failures at the bottom of the snowpack.
Avalanche Problem #2
Problem
Wind Drifted Snow
Trend
Decreasing Danger
Snow Profile
Aspect
North
Elevation
8,900'
Slope Angle
31°
Video
Most of the natural activity from over the weekend was covered up and blown-in by snow that fell after the natural cycle, likely sometime Saturday. We could see signs of large avalanches that had run during the storm, like this 3'+ deep crown under the cliffs on a steep north facing slope at around 9000'.
Our test pit shows around 3' of new snow and weak faceted snow near the ground....
Today's Observed Danger Rating
Considerable
Tomorrows Estimated Danger Rating
Considerable
Coordinates
