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Eastern Sierra Avalanche Center

Professional Observation

       

Basic Information

Observation Details

Observation Date:
February 4, 2022 - February 4, 2022
Submitted:
February 4, 2022
Observer:
Jonathan Tuttle | Pro Observer
Zone or Region:
Mammoth Lakes
Location:
Sherwins (The Perch Trees)- Well developed facets, enjoyable skiing above 8200ft

Signs of Unstable Snow

Recent Avalanches? 
None Observed
Cracking? 
None Experienced
Collapsing? 
None Experienced

Snow Stability

Stability Rating: 
Very Good
Confidence in Rating: 
High
Stability Trend: 
Steady

Key Points

Toured from the propane tanks parking area off of Sherwin Creek Road up to the base of the perch outcropping on the Sherwin ridge in search of some softer snow. Skied the North-facing, moderately spaced trees on the way down and here is what I found:

  • No signs of snowpack instability at all elevations and aspects traveled today
  • A mix of facets and breakable wind crusts near the ridge between 9600ft-9800ft
  • 5cm of fist hardness facets relatively uniform throughout the North aspects on elevations between 8200ft and 9600ft
  • Variable surface conditions below 8200ft with a widespread, supportable melt freeze crust
  • Ski crampons were not needed with reasonable route finding as facets provided excellent skinning conditions in this location
  • 0.5cm surface hoar in N facing areas within drainages and depressions below 8500ft
  • Boot pen of 15cm and ski pen of 5cm @9000ft
  • The facets skied nicely above 8200ft and I would say it was some of the best turns I’ve had in the past few weeks

Media

Variable conditions bellow 8200ft
Surface hoar in drainage
Easy skinning on 5cm of facets
5cm of Fist hardness surface facets @ 8600ft NE aspect

Advanced Information

Weather Summary

Cloud Cover:
Clear
Temperature:
28
Wind:
Calm , E

14:30 @ 8150ft, 33F, clear sky, no wind

15:00 @ 8500ft, 26F, clear sky, light E wind

15:30 @ 9050ft, 23F, clear sky, light E wind

16:00 @9800ft, 23F, clear sky, light E wind

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