Professional Observation
Basic Information
Observation Details
Observation Date:
January 11, 2023Submitted:
January 11, 2023Observer:
Everett Phillips | ESAC ForecasterZone or Region:
Mammoth LakesLocation:
Tobacco Flat - post storm assessmentSigns of Unstable Snow
Recent Avalanches?
YesCracking?
None ExperiencedCollapsing?
None ExperiencedKey Points
Went up the Tobacco Flat Rd. moraine to have a look at Mono Jim, McGee, and Mount Morrison post storm. Takeaways:
- Not a lot of evidence of recent avalanches in this area. If there were avalanches on these mountainsides then they likely failed early in the storm. One exception is listed below.
- Mostly moving observations today, but no signs of instability.
- It was still snowing and visibility was obscured past Mt. Aggie and Mt. Morrison North.
- Skies were clearing and the air was still over 395 and the Mammoth Airport.
- Supportable layers of wind deposited snow made trail breaking manageable.
Advanced Information
Weather Summary
Cloud Cover:
Mostly CloudyTemperature:
Not ObsWind:
Light , SW
Light and scattered snow showers. Isolated areas of blowing snow at treeline.
Avalanche Observations
| # | Date | Location | Size | Type | Bed Sfc | Depth | Trigger | Comments | Photo |
|---|---|---|---|---|---|---|---|---|---|
| 3 | Past 48 hours |
McGee N 9500' |
D2 | SS | N-Natural | Debris visible. Crown line not visible. |
|