Professional Observation
Basic Information
Observation Details
Observation Date:
February 16, 2022Submitted:
February 16, 2022Observer:
WCMAC - Geoff FastZone or Region:
Southern BitterrootsLocation:
Lost Trail BackcountrySigns of Unstable Snow
Recent Avalanches?
None ObservedCracking?
IsolatedCollapsing?
None ExperiencedSnow Stability
Stability Rating:
GoodConfidence in Rating:
HighStability Trend:
WorseningBottom 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:
OvercastTemperature:
-4CWind:
Moderate , WThe 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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