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Missoula Avalanche

Professional Observation

Basic Information

Observation Details

Observation Date:
February 16, 2022
Submitted:
February 16, 2022
Observer:
WCMAC - Geoff Fast
Zone or Region:
Southern Bitterroots
Location:
Lost Trail Backcountry

Signs of Unstable Snow

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

Snow Stability

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

Bottom Line

• The underlying snowpack remains right side up and strong from weeks of high pressure.
• New snow from the past few days remains unconsolidated.
• Wind slabs forming on leeward slopes near ridgelines above 7500'

Advanced Information

Weather Summary

Cloud Cover:
Overcast
Temperature:
-4C
Wind:
Moderate , W

The past two days of scattered snow have accumulated 4-8 inches in the Lost Trail Pass area. Blowing and drifting snow observed. Temperatures have remained upper teens to mid-twenties past two days.

Avalanche Observations

Wind slabs starting to form near ridgelines above 7500'.

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