Professional Observation
Basic Information
Observation Details
Observation Date:
January 31, 2022Submitted:
February 1, 2022Observer:
WCMAC - Trask BaughmanZone or Region:
MissionsLocation:
Southern Missions, Mount HenrySigns of Unstable Snow
Recent Avalanches?
YesCracking?
IsolatedCollapsing?
None ExperiencedSnow Stability
Stability Rating:
FairConfidence in Rating:
HighStability Trend:
WorseningBottom Line
Today we rode sleds into the southern Missions and toured on skis along Mount Henry. We found widespread crust-facet compo on all aspects, 1 foot down (30cm). We found isolated cracking on ridge tops and propagation in extended column tests in wind-loaded zones.
We intentionally triggered an avalanche on an east-facing slope at 6900ft on a steep rollover. The slope angle was 37° at the steepest and an average of 34°. The size caught us off guard. Measuring on a topographical map, we got the approximate size of the avalanche, 200 feet wide, running 250-300ft downhill. (HS-AS-C-R2-D2)
Media
Advanced Information
Weather Summary
Cloud Cover:
OvercastWind:
Strong , NWAvalanche Observations
| # | Date | Location | Size | Type | Bed Sfc | Depth | Trigger | Comments | Photo |
|---|---|---|---|---|---|---|---|---|---|
| 1 |
Mount Henry E 6900 |
D2 | WS | O-Old Snow | 1 foot (30cm) |
AS-Skier c-Intentional |
None |