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Eastern Sierra Avalanche Center

Professional Observation

       

Basic Information

Observation Details

Observation Date:
February 9, 2023
Submitted:
February 9, 2023
Observer:
Geoff Unger | Key Observer
Zone or Region:
Mammoth Lakes
Location:
Upper Mammoth Rock Bowl Weather and Surface Snow Observation

Signs of Unstable Snow

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

Snow Stability

Stability Rating: 
Good
Confidence in Rating: 
Moderate
Stability Trend: 
Steady

Media

Advanced Information

Weather Summary

Cloud Cover:
Mostly Sunny
Temperature:
4.5 degrees C
Wind:
Calm

Field Weather Observation

Location

Sherwin Uptrack

Time

11:29

Elevation

9600

Aspect

N

Sky

FEW

Tair/Tsurf

4.5/-3.0

Precipitation Type/Rate

NO

Wind

L->N

Blow Snow

None

Surface Form/Size

FC 0.3

HST

0

Pen Boot/Pen Ski

25/10

Location

Lower Mammoth Rock Bowl

Time

12:25

Elevation

8800

Aspect

NE

Sky

FEW

Tair/Tsurf/T20

4.5/

Precipitation Type/Rate

NO

Wind

L->S

Blow Snow

None

Surface Form/Size

/ 0.5mm

HST

0

HS

250

Pen Boot/Pen Ski

35cm/10cm

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