Cornices
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- Wahrscheinlichkeit
- Possible
- Größe
- 0
Snow cover varies around the forecast area significantly and its presence/absence is affected more by geographic location than by mid or upper elevation location. Some areas hold significant snow at 7,800' while other areas are nearly bare ground at 8,500'. Air temperature inversion conditions have maximum daytime air temperatures at the upper elevations well above freezing. Significant melt is occurring in all sun exposed areas, especially on E-SE-S-SW-W aspects. NW-N-NE aspects are remaining colder and holding snow cover where it exists.
There is significantly more snow on NW-N-NE aspects at the upper elevations in the northern portion of the forecast area than in the southern portion. There is also more snow along the northern portion of the Sierra Crest at 8,000' than there is in the northern portion of the Carson Range (Mount Rose area) at 9,000'.
Areas above 9,000' on NW-N-NE aspects hold snow deposited on Oct 30th on top of a 1 to 2 foot thick basal ice mass. This ice mass formed out rain on snow to 11,000'+ following the Oct 16 snowfall event. The more recent snow deposited Oct 30th is starting to facet where it overlies this basal ice mass.
As time passes without additional large storms, this snow is likely to facet further, setting up a potential weak layer on top of an ice bed surface that rises up above anchors on the slope. In areas along the northern portion of the Sierra Crest in the 7,500' to 8,500' elevation range, snow from the Oct 30th storm event was deposited on bare ground as the ice mass is absent within this elevation range.