Professional Observation
Basic Information
Observation Details
Observation Date:
December 13, 2021Submitted:
December 14, 2021Observer:
Josh Feinberg | Key ObserverZone or Region:
Mammoth LakesLocation:
Red Cone ApproachSigns of Unstable Snow
Recent Avalanches?
YesCracking?
WidespreadCollapsing?
IsolatedSnow Stability
Stability Rating:
Very PoorConfidence in Rating:
HighStability Trend:
WorseningKey Points
-Dramatic increase in snowfall intensity around dark to over 2″ an hour, as well as winds.
-Evidence of several very recent D2 natural avalanches in north facing chutes of red cone approach ridge.
-Cracking became widespread on any slope over 30°.
Advanced Information
Avalanche Observations
| # | Date | Location | Size | Type | Bed Sfc | Depth | Trigger | Comments | Photo |
|---|---|---|---|---|---|---|---|---|---|
| 3 | Today |
Red Cone approach ridge (steep chutes) N 10000 |
D2 | SS | 2-3ft | N-Natural | Unable to tell whether avalanches failed on new/old interface or in the upper faceted layer of old snow. | None |