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Missoula Avalanche

Professional Observation

Basic Information

Observation Details

Observation Date:
February 23, 2022
Submitted:
February 23, 2022
Observer:
WCMAC - David Fox
Zone or Region:
Central Bitterroots
Location:
Ward Mountain

Signs of Unstable Snow

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

Snow Stability

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

Bottom Line

Covered E, N and S aspects between 4300'-8300'
Stable conditions with no signs of instability observed.
Cold, low density snow sitting on firm base could produce sluffing in steep terrain.
Signs of previous wind impacts in the mid elevations (5500-7000'). Potential for loading on NE aspects.
Widespread, large surface hoar present on south aspects. None observed on other aspects.

Advanced Information

Weather Summary

Cloud Cover:
Clear
Temperature:
8F (-13C)
Wind:
Calm , N

Clear, sunny day. Cold temperatures ranging between 0 to 12F (-17 to -11C). Winds were calm with a light (1-3MPH) North breeze in the late afternoon. No snow transport observed but plenty available.

Snowpack Observations

Height of Snowpack at 7500' was 155cm. Pit was located on a NE aspect (45 degrees) with a 27 degree slope.
Observed weak layer was the new snow interface. Snow appears to be bonding well to old crusts and firm snow.
CT 20 @ 20cm (Broken). Approximately 8" (20cm) of new low density snow (F) on top of a 1" (3CM) layer of old wind affected snow 4f+.
ECTN13 @ 20CM.

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