March 16, 2022
March 17, 2022
Chris Engelhardt | ESAC Forecaster
Zone or Region:
Mammoth Crest-Red Cone area-Isothermal snow on E aspects, thin wind slab in the Alpine
- Reactive small and isolated wind slab on Northerly aspects in Red Cone bowl and Hollywood chute ~10,400K and above
Stability Rating: Good
Confidence in Rating:
Stability Trend: Steady
- Trace to 2″ of new snow at upper elevations with evidence of initial precipitation on 3/15 starting as rain at the 10K level. Northerly aspects around 10K where sheltered…harbored upwards of 4″ of wind blown new snow. Minor thin rain crusts of non-uniform nature observed at ridgeline.
- Thin, reactive wind slab was found cross loaded in Hollywood chute and right adjacent to ridgeline in Red Cone bowl ~ 10400ft. Small panels easily slid on old near surface faceted surfaces.
- Easterly aspects from 9-10K are becoming isothermal (equal-temperature @ freezing) with progressive rounding of snow grains. Unsupportable where shallow in late afternoon.
- Minor roller-balling on Easterly aspects (~9100ft), likely occurring on 3/15.
- Running water observed on Granite slab beneath the snowpack on East Aspects at 9600ft
- Temperature crusts on northeasterly aspects within trees above Horseshoe lake.
- Significant Roof-Avalanche off the Wildyrie Lodge near Lake Mamie. (see photo)