Observation: Reed and Benson Ridge

Observation Date
1/8/2016
Observer Name
Andy Farrell
Region
Salt Lake » Big Cottonwood Canyon » Cardiff Fork » Reed and Benson Ridge
Location Name or Route
Reed and Benson
Weather
Sky
Obscured
Precipitation
Light Snowfall
Wind Direction
Northwest
Wind Speed
Calm
Snow Characteristics
New Snow Depth
5"
New Snow Density
Low
Snow Surface Conditions
Powder
Snow Characteristics Comments
Nice right side up accumulation of the past week's snow skied well. Only felt bottom occasionally on southerly aspects
Red Flags
Red Flags
Recent Avalanches
Poor Snowpack Structure
Red Flags Comments
Numerous small storm slab releases noted during travels. This instability seemed to have settled out by late morning. One noteworthy repeater mid slope on Two Dogs in Upper Days Fork. Minimal sluffing observed only on slopes approaching 40 degrees.
Avalanche Problem #1
Problem
Persistent Weak Layer
Trend
Same
Avalanche Problem #2
Problem
New Snow
Trend
Decreasing Danger
Snow Profile
Aspect
West
Elevation
9,500'
Slope Angle
38°
Comments
Quick snow pit on upper Benson and Hedges apron after noting a shallow HS 70-80cm while ascending. West/Southwest micro aspect directly below the couloir: HS: 70cm ECT 17 Q1 Sudden Planar, Energetic failure at 1-3mm basal facets that were very striated and easily identified with the naked eye. Hadn't observed such a quality planar failure with any ECT/CT during my recent travels around the Central Wasatch. Not sure what explains the abnormally low HS is this area... Did it all flush early during the Christmas storm cycle and/or get scoured by the recent southerly winds? Consistent slab hardness trend from Fist to 4F/1F on top of 5 cm of basal facets.
Route: Flagstaff shoulder, descending Hallway. Benson and Hedges apron to powerline, descending Cardiff Bowl. The Hallway had very little snow and appears to have avalanched repeatedly starting during the Christmas cycle. I wouldn't recommend it now or after it receives a significant load.
Today's Observed Danger Rating
Moderate
Tomorrows Estimated Danger Rating
Moderate
Coordinates